塑料是人工合成的或天然的高分子化合物,尤以合成树脂为原料的最为普遍。由于塑料具有质轻、美观、绝缘、耐腐蚀、来源方便、易于加工、品种繁多、成本低廉等优点,特种塑料还具有特种性能,所以,在许多场合,塑料可以用来替代金属、陶瓷、搪瓷、木材、纸张、皮革、橡胶、纺织品等材料,在日用品、建筑材料、装饰材料、包装材料、涂料、黏合 Plastic is synthetic or natural polymer compounds, especially synthetic resin as the most common raw materials. Because of its advantages of light weight, beautiful appearance, insulation, corrosion resistance, convenient source, easy processing, variety and low cost, special plastic also has special properties. Therefore, in many occasions, plastic can be used to replace metal, ceramic and enamel , Wood, paper, leather, rubber, textiles and other materials, in the daily necessities, building materials, decorative materials, packaging materials, coatings, adhesives