1.注塑过程中使用更多纯树脂
1. Use more pure resin during injection molding
在许多塑料的注塑加工中，尤其是在诸如聚氯乙烯，苯乙烯，聚乙酸乙酯和丙烯酸酯之类的塑料中，痕量的残留单体会产生难闻的气味。使用单体残留非常困难的树脂就足够了,这些气味。如果使用本来就无味的树脂，则效果会很差。
In the injection molding of many plastics, especially in plastics such as polyvinyl chloride, styrene, polyvinyl acetate and acrylate, trace residual monomers will produce unpleasant smell. It is sufficient to use a resin with very difficult monomer residue to eliminate these odors. If you use an already tasteless resin, the effect will be very poor.
2.注塑加工改变添加剂
2. Change additives in injection molding
用于生产聚氨酯泡沫的叔胺催化剂通常会产生非常微弱的气味，此外，它还会在汽车的内窗玻璃上形成雾气。该问题的方法是找到这些胺的替代物，其中一种措施是使用多羟基化合物，剩余的羟基化合物不仅是聚氨酯分子链的组成部分，因此它们还具有催化活性。一些多羟基化合物也可以代替叔胺催化剂的一半，因此生成的产品散发出的臭味比那还少。
The tertiary amine catalyst used to produce polyurethane foam usually produces very faint odors. In addition, it also forms fog on the inner windows of cars. The way to solve this problem is to find substitutes for these amines. One measure is to use polyhydroxy compounds. The remaining hydroxyl compounds are not only components of polyurethane molecular chain, so they also have catalytic activity. Some polyhydroxy compounds can also replace half of the tertiary amine catalyst, so the resulting products emit less odor than that.
PVC挤出或压延中使用的苯酚稳定剂通常被高气味的锌稳定剂代替。由于其高气味和低雾化特性，热稳定剂辛酸锡在汽车PVC中也很常见。在产品中，植物提取油（如芥酸和油酸）比胺润滑剂（用于聚烯烃和苯乙烯食品包装中）的气味要高得多材料）由动物提取油制成。
Phenol stabilizer used in PVC extrusion or calendering is usually replaced by high odor zinc stabilizer. Due to its high odor and low atomization characteristics, heat stabilizer tin octanoate is also very common in automotive PVC. In products, vegetable extracted oils (such as erucic acid and oleic acid) have a much higher odor than amine lubricants (used in polyolefin and styrene food packaging). Materials) are made of animal extracted oils.
3.注塑加工吸附剂
3. Injection molding adsorbent
如果聚合物中填充有少量沸石（一种铝硅酸盐吸附剂），它将起到材料异味的作用,沸石具有大量的圆盘，可以捕获带有气味的小气体分子。该分子吸附剂已成功应用于聚烯烃挤出管，注塑加工和挤出吹塑容器，隔离包装材料，挤出包装材料和密封件。分子吸附粉末也可以作为吸湿剂添加到塑料中,除去除水蒸气外，该水蒸气还将有助于塑料制品的气味。
If the polymer is filled with a small amount of zeolite (an aluminosilicate adsorbent), it will eliminate the peculiar smell of the material. Zeolite has a large number of discs, which can capture small gas molecules with odor. The molecular adsorbent has been successfully applied to polyolefin extrusion tubes, injection molding and extrusion blow molding containers, isolation packaging materials, extrusion packaging materials and seals. Molecular adsorption powder can also be added to plastics as a hygroscopic agent. In addition to water vapor, the water vapor will also contribute to the odor of plastic products.
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