Paint engineering plastics are widely used in the construction industry, so flame retardants have become an indispensable additive, but currently, halogenated flame retardants on the market may have potential harm to the environment and human health due to {TodayHot} Therefore, in order to solve this contradiction, some users of engineering plastics have abandoned the application of these plastic additives and switched to engineering plastics that have flame retardant properties themselves.
Flame retardant polymers mainly include: polyetheretherketone (PEEK), polyetherimide (PEI), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polyethersulfone (PES), and polydisperse. Vinyl fluoride (PVDF) and liquid crystal polymer (LCP). Other polymers such as PVC, modified polyphenylene ether (PPO), etc. have some flame retardancy, but require a certain amount of additives to enhance this performance.
PEI is an amorphous polymer with a continuous use temperature of 180 ° C. It is highly resistant to hydrocarbons, halogenated solvents, water and automotive liquids with a glass transition temperature of 217 ° C. According to the data provided by PEI supplier GE, the 0.25mm spline flame burning rate is V-0 rated by UL94, and it has low smoke emission, can withstand a variety of chemicals, and has high strength. Modulus and high temperature creep resistance. PEI resins are available in both non-enhanced and enhanced grades. Typical fillers are carbon fiber, fiberglass and certain minerals.
In the manufacture of automotive parts, PEI can replace metal manufacturing dampers, sensors, air conditioners, ignition system components and drivetrain accessories. PEI's flame retardancy and low smoke and low toxic gas emissions also make this material suitable for use on aerospace vehicles such as gas and fuel valves, steering wheels, interior finish surfaces, food trays, and more. Electronic lighting components such as connectors and mirrors made of PEI materials are also used to take advantage of the flame retardancy of the polymer. In addition, PEI can be processed by standard injection molding methods, and the resulting part can have a wall thickness of 0.25 mm. Before processing, PEI should be dried at 140 ° C ~ 150 ° C for several hours.
Flame retardant polymers generally also have other excellent properties such as strength, dimensional stability, chemical resistance and abrasion resistance, etc., but these materials are generally more expensive than those that do not have flame retardancy, however These resins are needed to be used in applications where high performance and high flame retardancy are required.
Rutile Titanium Dioxide is used in coatings, plastics, paper, printing inks, chemical fiber, rubber, cosmetics and other industries. It has a high melting point and is also used to make refractory glass, glaze, enamel, clay, high temperature resistant laboratory utensils, etc.
At the same time, titanium dioxide has a good UV shielding effect, and is often incorporated into textile fibers as a sunscreen. Ultra-fine titanium dioxide powder is also added to sunscreen cream to make sunscreen cosmetics.
Titanium dioxide is not only used as a coloring agent in the rubber industry, but also has the functions of strengthening, anti-aging and filling. Titanium dioxide is added to white and colored rubber products. It is resistant to sunlight under sunlight, does not crack, does not change color, has high elongation and is acid and alkali resistant. Titanium dioxide for rubber is mainly used in car tires, rubber shoes, rubber flooring, gloves, sports equipment, etc., generally anatase type. However, when used in the production of automobile tires, a certain amount of rutile products are often added to enhance the anti-ozone and anti-ultraviolet capabilities.
Rutile titanium dioxide
Rutile titanium dioxide
Titanium dioxide is also widely used in cosmetics. Because titanium dioxide is non-toxic and far superior to lead white, almost all kinds of fragrant powder use titanium dioxide instead of lead white and zinc white. You only need to add 5%-8% of titanium dioxide to the fragrance powder to get a permanent white color, making the fragrance smoother, having adhesion, absorption and hiding power. In gouache and cold cream, titanium dioxide can weaken the greasy and transparent feeling. Titanium dioxide can also be used in various other spices, sunscreens, soap flakes, white soap and toothpaste.
The glaze made of titanium dioxide has strong transparency, low quality, strong impact resistance, good mechanical properties, bright colors, and is not easy to be polluted. Titanium dioxide for food and medicine is titanium dioxide with high purity, low heavy metal content and strong hiding power.
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