PA66尼龙66盐的制备由二元酸和二元胺制取尼龙时，需要严格控制原料配比为等摩尔比，才能得到分子量较高的聚合物，因此，在生产中必须先把己二酸和己二胺混合制成尼龙66盐。尼龙66盐的制备是分别把己二胺的溶液与己二酸的溶液在60℃以上的温度下搅拌混合，中和成盐后析出，经过滤、醇洗、干燥，***后配制成63%左右的水溶液，供缩聚使用。
When PA66 nylon 66 salt is prepared from diacid and two meta amine, it is necessary to strictly control the molar ratio as the molar ratio, so as to get a polymer with high molecular weight. Therefore, the mixture of adipic acid and adipamine must be mixed into nylon 66 salt in production. The preparation of nylon 66 salt is to mix adipic diamine solution and adipic acid solution at the temperature above 60 centigrade, neutralize it and precipitate after salt formation. After filtration, alcohol washing and drying, after ***, about 63% of the water solution is prepared for condensation.

PC‖以满足电子电器壳件对材料韧性、强度、耐热等方面的高性能要求。这些材料在电子电器壳件上的应用，具有以下其它类材料不可替代的优点：?聚碳酸酯可
PC to meet the high performance requirements of electronic and electrical shell parts for toughness, strength and heat resistance. The application of these materials in electronic and electrical shell parts has irreplaceable advantages as follows: polycarbonate can be used.
??1）优越的抗冲击性，冲击强度在热塑性塑料中名列前茅；
1) excellent impact resistance and impact strength are among the best in thermoplastics.
??2）良好的涂饰性和对覆盖膜的黏附性；
2) good finishing and adhesion to the covering film.
??3）高度的尺寸稳定性；
3) high dimensional stability;
??4）将部件安装整合成一体；
4) integrate the installation of components into one.
??5）设计和加工***灵活性应用；
5) design and processing highly flexible applicati***;
??6）线膨胀系数低，热膨胀系数小。
6) the coefficient of linear expansion is low and the coefficient of thermal expansion is ***all.

POM☆市场增长较快，而中国POM☆生产的基础比较薄弱；另外POM☆是资金和技术密集型的材料类化工产品，中国巨大的市场引起了国外大的关注，其它国一直想以其产品占据中国市场，不愿转让技术，使中国POM☆的技术水平提高缓慢，不能满足用户需求；再有就是长期以来，中国经济体制和 企业经营机制不符合市场经济规律，企业不能及时获得足够的资金投入，制约了POM☆生产的发展。
POM, the market is growing fast, and the basis of China's POM production is relatively weak; in addition, POM is a material and technology intensive material chemical product. The huge market in China has aroused great concern abroad. Other countries h***e always wanted to occupy the Chinese market with their products, unwilling to transfer technology and improve the technical level of China's POM. Slow, can not meet the needs of the user; again, for a long time, China's economic system and enterprise operating mechani*** do not conform to the law of the market economy, enterprises can not get enough capital investment in time, restricting the development of POM production.

PBT是同用工程塑料中工业化***晚而发展***快的一个品种，它之所以成为工程塑料的后起之秀，首先在于它具有优良的综合性能，以及良好的成型加工性和性能/价格相比，故此PBT塑料虽然到70年代才工业化生产，但很快热销市场，现为五大工程塑料发展***快的一种。
PBT is a kind of fast developing *** in the same engineering plastics in the late industrialization of ***. It has become a rising star of engineering plastics. First of all, it has excellent comprehensive performance and good processing property and performance / price. Therefore, the PBT plastic is not industrialized until 70s, but it is fast selling market. Now, it is a fast developing *** for the five major engineering plastics.

⒉生产PBT所消耗的能量是工程塑料中***低的的，这对于世界范围内能源紧缺的情况下，具有十分重要的意义。
The energy c***umption of producing PBT is lower than that of *** in engineering plastics, which is of great significance for the shortage of energy in the world.
⒊耐热老化性优异，增强后的UL温度指数达到120~140℃，此外，户外长期老化性也很好。
It has excellent heat aging resistance, enhanced UL temperature index of 120~140 C, and outdoor long term aging.
⒋耐溶剂好，无应力开裂。
It has good solvent resistance and no stress cracking.

ABS的成型温度除耐热级、电镀级等品级的树脂要求温度稍高些（在210—2501)以改箸其熔体充模困难或有利于电镀性能之外，对于通用级、阻燃级、抗冲级等ABS树脂都希温度取低些，以防发生分解或对其物理机械性能不利。
The molding temperature of ABS is slightly higher than that of the heat and electroplating grade resins (210 to 2501) to modify the mold filling difficulty or to the electroplating performance. The temperature of the general, flame retardant and anti grade ABS resins is lower, in order to prevent disintegration or physical mechanical properties.

EVA由于在分子链中引入***单体，从而降低了高结晶度，提高了韧性、抗冲击性、填料相溶性和热密封性能，被广泛用于发泡鞋材、功能性棚膜、包装模、热熔胶、电线电缆及玩具等领域。特性是是广泛用于发泡鞋材、功能性棚膜、包装模、热熔胶、电线电缆及玩具等领域。
Due to the introduction of vinyl acetate monomer in the molecular chain, EVA reduces the high crystallinity and improves the toughness, impact resistance, filler phase solubility and thermal sealing performance. It is widely used in the fields of foamed shoe material, functional shed film, packaging mold, hot melt adhesive, wire and cable and toy. It is widely used in foamed shoes, functional greenhouse films, packaging moulds, hot-melt adhesives, wires and cables, toys and so on.

TPE不良现象可能原因处理方法成品出模变型冷却时间太短，成品未能足够冷却延长冷却时间开模速度过快，强拉变型减缓开模速度成品构造有缺陷修改模具模温过高，成品冷却不到位降低模温成品出模易***料温过低或模温过低提高炮筒温度和模具温度脱模斜度不够或顶出顶出方式不当修改模具浇口太小修改模具脱模角不足修改模具
TPE bad phenomenon possible reason treatment method the finished mold variant cooling time is too short, the finished product can not cool enough to extend the cooling time to open the mold speed too fast, the strong tension change type slows the die speed to modify the mold mold temperature too high, the finished product cooling is not in place to reduce the temperature over the mold temperature and the die temperature too low. Low raise barrel temperature and mold temperature release angle is not enough or the top ejection way is improper, modify the mold gate too ***all, modify the mold release angle, modify the mold.

PA66 etc fastness.Skid resisting and s***e labour, east to process and color, h***e widely designspace.涂油系列（Eeay-paintingseries）GP410 GP420GP430应用范围：各类涂油玩具、日常用品等，广泛取代PVC。
PA66 etc fastness.Skid resisting and s***e labour, east to process and color, all kinds of oil and oil toys, daily necessities, and so on, widely replaced.