r, >Not resistant to strong acids and oxidants, but has certain stability to alkenoic acid and weak acids. It has good solvent resistance and can withstand hydrocarbons, alcohols, aldehydes, ethers, gasoline, lubricating oils and weak alkali, etc., and can maintain considerable chemical stability at high temperatures. Low water absorption and good dimensional stability.
<:rr, , has poor weather resistance. Under the action of ultraviolet rays for a long time, its mechanical properties will decline, and its surface will become powdered and cracked.
<:rr, , , High mechanical strength and rigidity, highest fatigue strength, environmental resistance, good resistance to organic solvents
<:rr, , , Strong resistance to repeated impact, widely used Temperature range (℃~℃), good electrical properties
<:rr, , good recovery properties, self-lubricating properties, good wear resistance, and excellent dimensional stability.
<:rr, , Usage: Electronic appliances: washing machines, juice machine timers and other components
<:rr, , Automobiles: handlebars, electric windows and other parts mechanical parts, gears, handles, screws, toys etc
<:rr, , Category: Glass fiber/carbon fiber reinforced, fireproof, UV and weather resistant, Teflon added, antistatic/conductive: >It is a crystalline plastic with an obvious melting point. Once the melting point is reached, the melt viscosity Decline rapidly. When the temperature exceeds a certain limit or the melt is heated for too long, decomposition will occur.
<:rr, , has good comprehensive properties, is the hardest among thermoplastics, and is one of the varieties of plastic materials whose mechanical properties are closest to metals. Its tensile strength, bending strength, and fatigue resistance , the wear resistance and electrical properties are very good, and can be used for a long time between degrees.
<:rr, , According to different molecular chain structures, polyoxymethylene can be divided into homopolyoxymethylene and copolyoxymethylene. The former has high density, crystallinity, and melting point, but has poor thermal stability and narrow processing temperature (degrees). The stability of acid alkaloids is slightly lower. The latter has lower density, crystallinity and melting point, but has good thermal stability, is not easy to decompose, and has a wide processing temperature (degrees)
<:rr, , The disadvantage is that it is affected by strong acid Corrosion, poor weather resistance, poor adhesion, thermal decomposition and softening temperatures close to each other, and small oxygen limiting index. They are widely used in the automotive industry, electronic appliances, mechanical equipment, etc. It can also be used as faucets, window frames, and wash basins.
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