As science and technology continue to innovate and advance, our country's chemical industry is also making continuous progress. The rubber and plastics industry has made significant technological progress, and the new type of roofing waterproof material has provided the material basis for the development of a single-story roof. Since then, single-layered roofs based on rubber and plastic have appeared in the field of low-slope roofing.
According to RSI Magazine's recent report, the new type of roofing waterproof material in the United States has been growing at an alarming rate. It has developed into a new type of roofing waterproof material that deserves our attention and is now being comprehensively introduced for the reference of our waterproof material industry peers. 1. Surprising growth in new waterproof materials for single-story roofing It is well-known that there has been little change in the new roofing waterproof material technology in the 100 years before the 1960s.
All countries in the world use hot-tacked asphalt to lay 3 to 4 layers of bituminous membranes as a waterproof layer for new roofing waterproofing materials. This is called new waterproof material for laminated roof (BUR). The United States is no exception. With the advancement of the chemical industry, the rubber and plastics industry has made significant technological progress, providing a material basis for the development of new waterproof materials for single-layer roofing and new waterproof materials.
In 1962, the United States Carlyle Company laid a new type of EPDM roofing waterproof material membrane on the roof of the Chicago International Airport, creating a precedent for a new type of single-layer roofing waterproof material. Since then, new single-layer roofing waterproofing materials based on rubber and plastics have appeared in the field of new waterproof materials for low-slope roofs.
However, the initial development of new single-layer roofing waterproofing materials has been slow, and people are still habitually keen on more reliable laminated roofing new waterproofing materials. The world resource situation in the 1970s brought opportunities for the development of new waterproof materials for single-story roofing.
First of all, the 1973 Arab oil embargo resulted in soaring oil prices and a shortage of new waterproofing materials for roofing of high quality roofing. At the same time, higher energy prices have increased the demand for new thermal resistance roofing new waterproof material systems.
This makes the new waterproof material for single-layer roof more attractive because it can be directly laid on advanced insulation boards such as polyisocyanurate and expanded polystyrene. At that time, some functional problems occurred in the new type of waterproof material for laminated roofs, such as double-layer failure and foaming on polyurethane insulation boards.
In spite of this, the new roofing waterproof material contractor was still cautious about the use of monolayers, and the new waterproof material for flat roofs was not modified asphalt. In 1997, it accounted for only 10% of the new waterproof material market for low slope roofs. Since then, the material quality of new-type waterproof materials for single-story roofs has been continuously improved, construction technology has been correspondingly improved and perfected, and new-type waterproof materials for single-layer roofs have been rapidly and continuously growing, increasing to 25% in 1984 and increasing to 48% in 1987. Over half of the year, accounting for 54% of the market, has become a new type of roofing waterproof materials.
According to statistics, in 2005, the U.S. single-story roofing new waterproof material association member company provided a new type of waterproof material roll of 288.7 million square meters of roofing, which was more than twice the supply in 1984, and it can be seen that the output is huge. 2. New Waterproof Materials for Single-Layer Roofing Advances in Solving Problems and Improving Quality Like many new technologies, new waterproof materials for single-story roofs have experienced growing pains.
In the 1987 survey, the new type of waterproof material contractor on the roof encountered the most problems in the single-layer roofing new waterproof material. When the market share of single-layer roofing new waterproof material exceeds 50%, some contractors have reported that the destruction of single-layer products and recalls and repairs are up to 75%.
The EPDM roofing new waterproof material coil itself has few problems, but the laying technology is poor, especially the joint accidents. EPDM membranes are extremely weather-resistant, but on-site seaming and installation techniques require significant improvements.
Some powerful companies in the United States have successfully solved a series of technical problems based on joints by providing complete supporting materials and technological innovations. This has ensured that EPDM roofing new waterproof material membranes have become the leading new type of waterproof material for roofs. Its technical level is far higher than other developed countries in the world. The development of pvc roofing new type of waterproof material coils is not easy. The initial homogenous pvc coils had a problem of cracking, which led to a drastic reduction in the number of manufacturers and a decline in output. Later, they were changed to enhanced products and plastics that did not migrate were used. The agent, thus greatly prolonging the service life of the material, ensures that the pvc coil material occupies a place in the new waterproof material of the single-layer roof.
TPO roofing new waterproof material membrane is a rising star for single-layer roofing new waterproof material. Taking into account the lessons learned from other single-layer roofing new waterproofing materials, the use of enhanced products is the main focus at the beginning, and the quality of new-type roofing waterproof materials is satisfactory. . TPO membranes have grown by more than double digits in the past few years.
According to the 2006 survey, 71% of the contractors expressed satisfaction with the function of TPO coils. Among those who were unsatisfied, 66% attributed to seam problems and construction difficulties in cold weather.
Since the 1990s, the problem of new types of waterproof materials for single-story roofs has continued to decline, while the market share has increased significantly. In the 1980s, the market share of new-type waterproof materials for single-layer roofs was much smaller than today, but nearly 70% of the contractors reported the largest number of new waterproof materials for single-layer roofing repairs, while only 58% of contractors reported single-layer roofing in 2006. Waterproof material is the most repaired.
In fact, the rate of repairs has decreased continuously for many years, but the market share of new-type waterproof materials for single-layer roofs has increased significantly. This should be attributed to the improvement of material quality and construction technology. 3. New advances in new waterproof materials for single-story roofing. Market share of three types of roofing new waterproofing materials, EPDM, TPO, and pvc, are used in single-story roofing new types of waterproofing materials. In 2006, new types of roofing new waterproofing materials, EPDM It accounted for 22%, TPO accounted for 19%, pvc accounted for 9%; in the new type of waterproof material for resurfacing, EPDM accounted for 21%, TPO accounted for 16, and pvc accounted for 10%.
Currently EPDM ranks first, TPO is the fastest growing trend, and pvc is stable at about 9%. EPDM EPDM roofing new waterproof material system in the United States is the first in the world. The coil quality is superior. The thermal stability requirements in the standard are much higher than those in Europe. The supporting materials are complete, and the paving technology is advanced.
Product varieties are homogenous, reinforced and back lining and self-adhesive. The width is from 1.37 to 15.24 m.
Manufacturers supply a whole range of new types of roofing waterproof materials and products including coils, flooding, adhesives, sealants, fixtures, insulation materials, pipe bases, etc. In particular, various high-quality self-adhesive tapes for seams and coverings have been introduced in recent years. The problem of difficult adhesion of EPDM was completely solved. As a result, maintenance fees continued to decrease. In 1993, it accounted for only 1%, which is now negligible. The service life of new EPDM roofing waterproofing materials has been continuously extended. The typical roofing new waterproofing material has a guarantee period of 10 years. Recently, it has also launched 20 and 30-year warranty periods.
The biggest advantage of the pvc pvc roofing new waterproof material coil is that the joints can be welded, but the homogeneous coils are easy to crack. In order to solve the problems arising from the initial use, the use of fiber and fabric reinforced products, modified PVC resin for coils, high molecular weight plasticizers and high light stability, allegedly DuPont's Elvaloy resin type plasticizers are not Volatile to provide permanent flexibility.
These improvements have received noticeable results. The average life span of pvc's new roofing waterproof material is more than 30 years, and it can still be welded after the longest 23 years. TPO TPO new waterproof material membrane roof has the physical properties of ethylene propylene rubber, but also the weldability of polypropylene, does not contain plasticizers, is the most complete environment-friendly roof new waterproof material, and therefore Europe, the United States, Japan and other developed countries are developing such products.
The TPO technology of the United States ranks among the world's leading companies, focusing on the development of enhanced products and fewer product problems; developing flame-retardant products; higher product requirements than Europe and Japan; high reflectivity of white products, meeting energy-saving requirements; self-adhesive The installation cost of the product is low, and it has long-term durability; the width is large, and the web width is 1.9 m, 2.4 m, 3.05 m, and 3.66 m, which facilitates pavement. The new TPO roofing waterproof material coils in Europe and Japan developed rapidly at an early stage, and then slowed down due to some problems. The TPO in the United States has always been showing a momentum of rapid development. Currently, it has greatly surpassed pvc and is ranked in a single layer of new roof waterproofing. In the second place of materials, some large companies (such as Carlisle and Firestone) have recently put on new TPO production lines to meet the growing demand and their development prospects are limitless.
4. Helpful Inspiration The United States, with its strong economic strength and consistent innovation spirit, continuously promotes the development of new waterproof materials for single-layer roofs, making them the leading products in the new waterproof material market for roofs. Its mature experience is worth learning from. The world's single-layer roofing new type waterproof material has the advantages of saving energy and resources and benefiting environmental protection and human health.
The world's oil is inevitably in short supply of large amounts of energy data, and energy prices are fickle, showing a trend of repeated upwards. It is impossible to rely on asphalt-based materials for long-term in the field of new types of waterproof materials for building roofs. The new waterproof material for single-layer roofs is to save energy and protect the environment. The main way out, so China's new roofing waterproof material industry should be a single layer of new waterproof material to give a high degree of roofing concerns. According to the development experience of the United States, three kinds of products are mainly used in new waterproof materials for single-story roofs: EPDM, pvc, and TPO. China should also concentrate its efforts on these three products in order to achieve remarkable results in the short term.
China's EPDM roofing new type of waterproof material coil is small in scale, small in variety, low in output, and has great potential for development. It is advisable to increase new varieties such as enhanced type, white/black surface, develop wide-width products, improve product quality, and obtain complete supporting materials. With reference to U.S. standards to improve the quality of EPDM coils, the problem of joints has been completely solved by means of self-adhesive sealing tapes, and efforts have been made to increase the sales volume so that EPDM, the new anti-aging roofing type waterproof material system, will achieve greater development.
China's pvc roofing new waterproof material coil has some 2 m wide production lines, but the product quality needs to be fundamentally improved. It is advisable to develop new varieties such as reinforced and white, and adopt high-molecular-weight and non-volatile resin type plasticizers. Thoroughly solve the key problem of plasticizer migration and promote the sound and rapid development of PVC coils. TPO roofing new waterproof material coil is energy-saving and environmentally friendly. It is the most complete roofing new waterproof material at present, and the United States has made significant progress.
Unfortunately, China has taken a wait-and-see attitude toward this superior product. It has been used very limitedly so far. It is only trying to get started. It urgently needs to refer to the American experience and attaches great importance to the development of this energy-saving and environment-friendly single-layer coil, making the TPO roof a new type of waterproof material. The coils are moving towards healthy development. China's waterproof material industry is more familiar with modified bitumen membrane, and the use of comparison is handy. However, little is known about the new type of waterproof material for single-layer roof, and the development of new waterproof materials for single-layer roof is often neglected. Looking farther, pay more attention to new waterproof materials for single-layer roofs, and give more space for development in new types of waterproof materials for roofing, underground waterproofing, and new waterproofing materials for roofing.
Powerful large and medium-sized enterprises (including modified asphalt manufacturers) should also be involved in the development and production of single-layer roofing new waterproof materials, and provide more advanced and efficient materials for new roofing waterproof materials.
According to RSI Magazine's recent report, the new type of roofing waterproof material in the United States has been growing at an alarming rate. It has developed into a new type of roofing waterproof material that deserves our attention and is now being comprehensively introduced for the reference of our waterproof material industry peers. 1. Surprising growth in new waterproof materials for single-story roofing It is well-known that there has been little change in the new roofing waterproof material technology in the 100 years before the 1960s.
All countries in the world use hot-tacked asphalt to lay 3 to 4 layers of bituminous membranes as a waterproof layer for new roofing waterproofing materials. This is called new waterproof material for laminated roof (BUR). The United States is no exception. With the advancement of the chemical industry, the rubber and plastics industry has made significant technological progress, providing a material basis for the development of new waterproof materials for single-layer roofing and new waterproof materials.
In 1962, the United States Carlyle Company laid a new type of EPDM roofing waterproof material membrane on the roof of the Chicago International Airport, creating a precedent for a new type of single-layer roofing waterproof material. Since then, new single-layer roofing waterproofing materials based on rubber and plastics have appeared in the field of new waterproof materials for low-slope roofs.
However, the initial development of new single-layer roofing waterproofing materials has been slow, and people are still habitually keen on more reliable laminated roofing new waterproofing materials. The world resource situation in the 1970s brought opportunities for the development of new waterproof materials for single-story roofing.
First of all, the 1973 Arab oil embargo resulted in soaring oil prices and a shortage of new waterproofing materials for roofing of high quality roofing. At the same time, higher energy prices have increased the demand for new thermal resistance roofing new waterproof material systems.
This makes the new waterproof material for single-layer roof more attractive because it can be directly laid on advanced insulation boards such as polyisocyanurate and expanded polystyrene. At that time, some functional problems occurred in the new type of waterproof material for laminated roofs, such as double-layer failure and foaming on polyurethane insulation boards.
In spite of this, the new roofing waterproof material contractor was still cautious about the use of monolayers, and the new waterproof material for flat roofs was not modified asphalt. In 1997, it accounted for only 10% of the new waterproof material market for low slope roofs. Since then, the material quality of new-type waterproof materials for single-story roofs has been continuously improved, construction technology has been correspondingly improved and perfected, and new-type waterproof materials for single-layer roofs have been rapidly and continuously growing, increasing to 25% in 1984 and increasing to 48% in 1987. Over half of the year, accounting for 54% of the market, has become a new type of roofing waterproof materials.
According to statistics, in 2005, the U.S. single-story roofing new waterproof material association member company provided a new type of waterproof material roll of 288.7 million square meters of roofing, which was more than twice the supply in 1984, and it can be seen that the output is huge. 2. New Waterproof Materials for Single-Layer Roofing Advances in Solving Problems and Improving Quality Like many new technologies, new waterproof materials for single-story roofs have experienced growing pains.
In the 1987 survey, the new type of waterproof material contractor on the roof encountered the most problems in the single-layer roofing new waterproof material. When the market share of single-layer roofing new waterproof material exceeds 50%, some contractors have reported that the destruction of single-layer products and recalls and repairs are up to 75%.
The EPDM roofing new waterproof material coil itself has few problems, but the laying technology is poor, especially the joint accidents. EPDM membranes are extremely weather-resistant, but on-site seaming and installation techniques require significant improvements.
Some powerful companies in the United States have successfully solved a series of technical problems based on joints by providing complete supporting materials and technological innovations. This has ensured that EPDM roofing new waterproof material membranes have become the leading new type of waterproof material for roofs. Its technical level is far higher than other developed countries in the world. The development of pvc roofing new type of waterproof material coils is not easy. The initial homogenous pvc coils had a problem of cracking, which led to a drastic reduction in the number of manufacturers and a decline in output. Later, they were changed to enhanced products and plastics that did not migrate were used. The agent, thus greatly prolonging the service life of the material, ensures that the pvc coil material occupies a place in the new waterproof material of the single-layer roof.
TPO roofing new waterproof material membrane is a rising star for single-layer roofing new waterproof material. Taking into account the lessons learned from other single-layer roofing new waterproofing materials, the use of enhanced products is the main focus at the beginning, and the quality of new-type roofing waterproof materials is satisfactory. . TPO membranes have grown by more than double digits in the past few years.
According to the 2006 survey, 71% of the contractors expressed satisfaction with the function of TPO coils. Among those who were unsatisfied, 66% attributed to seam problems and construction difficulties in cold weather.
Since the 1990s, the problem of new types of waterproof materials for single-story roofs has continued to decline, while the market share has increased significantly. In the 1980s, the market share of new-type waterproof materials for single-layer roofs was much smaller than today, but nearly 70% of the contractors reported the largest number of new waterproof materials for single-layer roofing repairs, while only 58% of contractors reported single-layer roofing in 2006. Waterproof material is the most repaired.
In fact, the rate of repairs has decreased continuously for many years, but the market share of new-type waterproof materials for single-layer roofs has increased significantly. This should be attributed to the improvement of material quality and construction technology. 3. New advances in new waterproof materials for single-story roofing. Market share of three types of roofing new waterproofing materials, EPDM, TPO, and pvc, are used in single-story roofing new types of waterproofing materials. In 2006, new types of roofing new waterproofing materials, EPDM It accounted for 22%, TPO accounted for 19%, pvc accounted for 9%; in the new type of waterproof material for resurfacing, EPDM accounted for 21%, TPO accounted for 16, and pvc accounted for 10%.
Currently EPDM ranks first, TPO is the fastest growing trend, and pvc is stable at about 9%. EPDM EPDM roofing new waterproof material system in the United States is the first in the world. The coil quality is superior. The thermal stability requirements in the standard are much higher than those in Europe. The supporting materials are complete, and the paving technology is advanced.
Product varieties are homogenous, reinforced and back lining and self-adhesive. The width is from 1.37 to 15.24 m.
Manufacturers supply a whole range of new types of roofing waterproof materials and products including coils, flooding, adhesives, sealants, fixtures, insulation materials, pipe bases, etc. In particular, various high-quality self-adhesive tapes for seams and coverings have been introduced in recent years. The problem of difficult adhesion of EPDM was completely solved. As a result, maintenance fees continued to decrease. In 1993, it accounted for only 1%, which is now negligible. The service life of new EPDM roofing waterproofing materials has been continuously extended. The typical roofing new waterproofing material has a guarantee period of 10 years. Recently, it has also launched 20 and 30-year warranty periods.
The biggest advantage of the pvc pvc roofing new waterproof material coil is that the joints can be welded, but the homogeneous coils are easy to crack. In order to solve the problems arising from the initial use, the use of fiber and fabric reinforced products, modified PVC resin for coils, high molecular weight plasticizers and high light stability, allegedly DuPont's Elvaloy resin type plasticizers are not Volatile to provide permanent flexibility.
These improvements have received noticeable results. The average life span of pvc's new roofing waterproof material is more than 30 years, and it can still be welded after the longest 23 years. TPO TPO new waterproof material membrane roof has the physical properties of ethylene propylene rubber, but also the weldability of polypropylene, does not contain plasticizers, is the most complete environment-friendly roof new waterproof material, and therefore Europe, the United States, Japan and other developed countries are developing such products.
The TPO technology of the United States ranks among the world's leading companies, focusing on the development of enhanced products and fewer product problems; developing flame-retardant products; higher product requirements than Europe and Japan; high reflectivity of white products, meeting energy-saving requirements; self-adhesive The installation cost of the product is low, and it has long-term durability; the width is large, and the web width is 1.9 m, 2.4 m, 3.05 m, and 3.66 m, which facilitates pavement. The new TPO roofing waterproof material coils in Europe and Japan developed rapidly at an early stage, and then slowed down due to some problems. The TPO in the United States has always been showing a momentum of rapid development. Currently, it has greatly surpassed pvc and is ranked in a single layer of new roof waterproofing. In the second place of materials, some large companies (such as Carlisle and Firestone) have recently put on new TPO production lines to meet the growing demand and their development prospects are limitless.
4. Helpful Inspiration The United States, with its strong economic strength and consistent innovation spirit, continuously promotes the development of new waterproof materials for single-layer roofs, making them the leading products in the new waterproof material market for roofs. Its mature experience is worth learning from. The world's single-layer roofing new type waterproof material has the advantages of saving energy and resources and benefiting environmental protection and human health.
The world's oil is inevitably in short supply of large amounts of energy data, and energy prices are fickle, showing a trend of repeated upwards. It is impossible to rely on asphalt-based materials for long-term in the field of new types of waterproof materials for building roofs. The new waterproof material for single-layer roofs is to save energy and protect the environment. The main way out, so China's new roofing waterproof material industry should be a single layer of new waterproof material to give a high degree of roofing concerns. According to the development experience of the United States, three kinds of products are mainly used in new waterproof materials for single-story roofs: EPDM, pvc, and TPO. China should also concentrate its efforts on these three products in order to achieve remarkable results in the short term.
China's EPDM roofing new type of waterproof material coil is small in scale, small in variety, low in output, and has great potential for development. It is advisable to increase new varieties such as enhanced type, white/black surface, develop wide-width products, improve product quality, and obtain complete supporting materials. With reference to U.S. standards to improve the quality of EPDM coils, the problem of joints has been completely solved by means of self-adhesive sealing tapes, and efforts have been made to increase the sales volume so that EPDM, the new anti-aging roofing type waterproof material system, will achieve greater development.
China's pvc roofing new waterproof material coil has some 2 m wide production lines, but the product quality needs to be fundamentally improved. It is advisable to develop new varieties such as reinforced and white, and adopt high-molecular-weight and non-volatile resin type plasticizers. Thoroughly solve the key problem of plasticizer migration and promote the sound and rapid development of PVC coils. TPO roofing new waterproof material coil is energy-saving and environmentally friendly. It is the most complete roofing new waterproof material at present, and the United States has made significant progress.
Unfortunately, China has taken a wait-and-see attitude toward this superior product. It has been used very limitedly so far. It is only trying to get started. It urgently needs to refer to the American experience and attaches great importance to the development of this energy-saving and environment-friendly single-layer coil, making the TPO roof a new type of waterproof material. The coils are moving towards healthy development. China's waterproof material industry is more familiar with modified bitumen membrane, and the use of comparison is handy. However, little is known about the new type of waterproof material for single-layer roof, and the development of new waterproof materials for single-layer roof is often neglected. Looking farther, pay more attention to new waterproof materials for single-layer roofs, and give more space for development in new types of waterproof materials for roofing, underground waterproofing, and new waterproofing materials for roofing.
Powerful large and medium-sized enterprises (including modified asphalt manufacturers) should also be involved in the development and production of single-layer roofing new waterproof materials, and provide more advanced and efficient materials for new roofing waterproof materials.
Release date:2010/1/19 14:40:12
High-performance microcentrifuge tubes, optimized design, and high-performance quality help protect your samples. Microcentrifuge tubes are made of polypropylene (PP) and are highly mechanically stable, ensuring your samples are stored, run and centrifuged worry-free.
Microcentrifuge tubes have a maximum centrifugation tolerance of 25,000 x g and are autoclavable (20 minutes, 121°C). The centrifuge tube adopts a snap-on tube cover design, which can be operated with one hand and has good sealing performance, which can effectively prevent liquid leakage; the tube wall is smooth, and the tube body is designed with a frosted area for convenient marking.
microcentrifuge tube sizes,microcentrifuge tubes 1.5 ml,microcentrifuge tubes uses
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyue.com