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工程塑料合金：塑料合金是利用物理共混或化学接枝的方法，对现有的塑料进行改性，使之实现化、功能化、化。它能提高现有塑料的性能并降低成本，已成为塑料工业中活跃的领域之一，并且增长十分迅速。据预测，随着经济的发展，2018年前后世界塑料合金需求量将达到350万kg。
目前，通用塑料合金，如PVC、PE(聚乙烯)、PP(聚丙烯)、PS(聚苯乙烯)等虽然仍有着广泛的使用价值，但因其生产技术被普遍掌握，国外一些大公司供应的多是附加值较高的工程塑料合金品种。工程塑料合金泛指工程塑料(树脂)的共混物，主要包括以PC(聚碳酸酯)、PBT(聚对苯二甲酸丁二醇酯)、PA(尼龙)、POM(聚甲醛)、PPO(聚苯醚)、PTFE等塑料为主体的共混体系，以及在某些场合常被归属于工程塑料的ABS(丁二烯?苯乙烯共聚物)树脂改性材料。世界塑料合金的年均需求增长率为百分之10左右，而其中附加值高的工程塑料合金的增长率更高达百分之15左右，成为跨国公司积极开发的品种。在美国、欧洲、日本已实现工业化的塑料合金品种中，工程塑料合金占绝大多数，合金化已成为当前工程塑料改性的主要方法。随着我国经济的持续高速发展，今后几年我国塑料合金市场需求潜力，尤其是电子通讯、汽车、建筑业的高速增长，将拉动我国工程塑料合金业快速发展。
Engineering plastic alloys: plastics alloys are modified by physical blending or chemical grafting to achieve high performance, functionalization and specialization. It can improve the performance and reduce the cost of existing plastics, has become one of the active areas in the plastic industry, and the growth is very rapid. According to experts, with the development of the economy, the world plastic alloy demand will reach 3.5 million kg around 2018.

At present, universal plastic alloys, such as PVC, PE (polyethylene), PP (polypropylene), PS (polystyrene), are still widely used, but because their production technology is generally mastered, some large foreign companies specialize in high value added engineering plastics. It should include a blend of PC (polycarbonate), PBT (polybutylene terephthalate), PA (nylon), POM (polyoxymethylene), PPO (polyphenylene ether), PTFE and other plastics, and in some cases are often assigned to work. Butadiene? Styrene copolymer) resin modified material. The annual demand growth rate of plastic alloys in the world is about 10%, and the growth rate of engineering plastics alloys with high added value is about 15%, which has become a variety actively developed by multinational companies. In America, Europe and Japan, engineering plastics alloys account for the majority of all kinds of plastic alloys, and alloying has become the main method of modification of engineering plastics. With the sustained and rapid development of our economy, the market demand for plastic alloys in China has great potential in the next few years, especially the rapid growth of electronic communication, automobile and construction industry. In 2008, it will promote the rapid development of engineering plastic alloy industry in China.