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Jizhi Plastics News] Titanium dioxide is a commonly used plastic additive. Most of the plastic titanium dioxide has a fine particle size. Usually, the titanium dioxide powder for coating has a particle size of 0.2~0.4μm, while the titanium dioxide powder for plastics is used. The diameter is 0.15~0.3μm, so that the blue bottom phase can be obtained, which has a shielding effect on most yellow phase resin or yellowish resin.
Titanium dioxide for ordinary plastics generally does not undergo surface treatment, because the inorganic coated titanium dioxide such as conventional hydrated alumina, when the relative humidity is 60%, its adsorption equilibrium water is about 1%, when the plastic is extruded at high temperature. When processed, water evaporation causes pores on the smooth plastic surface. This inorganic coated titanium dioxide is usually subjected to organic surface treatment (polyol, silane or siloxane) because titanium dioxide for plastics Unlike titanium dioxide used in coatings, the former is processed by shearing force in a low-polarity resin, and the organic surface-treated titanium dioxide can be dispersed well under appropriate mechanical shearing force.
With the continuous application of plastic products, many external plastic products, such as plastic doors and windows, building materials and other outdoor plastic products, have high requirements on weather resistance. In addition to the use of rutile titanium dioxide, surface treatment is required. This surface treatment is generally free of zinc, and only silicon, aluminum, zirconium, etc. are added. Silicon has a hydrophilic dehumidification effect, which prevents pores from being generated by evaporation of water when the plastic is extruded at a high temperature, but the amount of these surface treatment agents is generally not too much.
The quality requirements for plastic products for titanium dioxide in plastic additives are:
Covering power: Titanium white with good hiding power, and the produced plastic products are lighter and thinner;
Whiteness: determines the appearance of light or white plastic products;
Dispersibility: affecting the production cost of plastic products. Titanium white with poor dispersion will affect the smoothness and brightness of the products in plastic products;
Weather resistance: Plastic products for outdoor use, plastic doors and windows, etc. must ensure the weather resistance of titanium dioxide.
Accelerometer Sensor
Accelerometer Sensor are widely used to monitor vibration in aerospace, automotive and manufacturing applications. Mechanical engineers often use them to diagnose problems with rotating equipment or assess the stability of structures that are subject to periodic stresses (such as monitoring the vibrations caused by trains/trucks crossing bridges, etc.) They are also often used in monitoring for condition-based maintenance, allowing engineers to examine the vibrations produced by a piece of equipment to assess its health, and monitoring the stresses sensitive equipment undergoes during transportation.
The most common method of acquiring vibration data involves connecting Accelerometer vibration sensor and configuring them into a data acquisition system that can deliver high-resolution (24-bit) vibration data at very high sample rates. Modern data acquisition systems can plot, log, filter, and analyze vibration data in real time, and allow using a variety of accelerometer types.
Accelerometer Sensor, Accelerometer vibration sensor, Acceleration sensor, MEMS vibration sensor,Triaxial Accelerometer Sensor, Triaxial Accelerometer
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