Characteristics and functions of ppa plastics
2023-05-30
ppa plastic has the characteristics of nylon, but the temperature resistance of PPA plastic is much higher than that of nylon. The function of ppa plastic exceeds the standard nylon in many primary aspects, the primary advantages include: providing the same strength and tolerance under monoharmonic wetting, compared with the standard nylon, at temperatures up to 300°C or more, PPa plastic still maintains useful strength and tolerance. There is also a very important aspect, ppa plastics are easy to process, with excellent fluidity, thermal stability and low mold corrosion; High functional nylon with high thermal stability and high lubricity, low water absorption (1%, other common high temperature nylon is more than 2.6%), low warpage, chemical resistance, high specification stability material, can achieve 94V-0 effect at 0.75mm thickness. The high glass transition temperature (125℃) and high crystallinity of PA9T make it maintain excellent resistance at high temperatures, better than PA66 and PA46, and the friction resistance and friction coefficient are much better than other Nones, even beyond POM and LCP. Another # function of PA9T is resistance to chemicals and oils, alcohols, acids and calcium dichloride, hot water and other fluids, simply beyond all PA, only slightly worse than PPS, and the barrier to fuel is ten times that of PA6 and PA12, close to ETFE(ethylene-tetrachloroethylene copolymer) level, these excellent functions make PA9T very suitable for car hood products. PA9T has fiberglass-free and fiberglass-containing (33%, 45%, 50%) and fireproof specifications, which has great development potential for car hood, electrical and electronic products and other shopping malls.
In summary, ppa plastic has the following functions:
1, in nylon series resin, low water absorption.
2, chemical resistance and wear resistance, its standard stability will not form a normative change due to water absorption or lead to its own mechanical strength decline. ,
3, with high heat resistance, 280 temperature over tin test will not occur bubbles, but also suitable for high temperature lead-free solder.
4, PPA plastic fluidity is good, suitable for thin meat forming.
5, low gas gas, less than other nylon resin is not easy to pollute and corrosion mold, extend the use of mold.
6, crystallization speed is fast, cooling time is short.
7, in high temperature environment, mechanical strength, rigidity decrease less, bonding line strength, good recovery. Used for high fluidity liquid packaging, food packaging, textile packaging, viscose tape, decorative tape, heat shrink film, single and multi-layer film produced at high speed.
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