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相容剂应用举例
相容剂应用举例
Application of compatibilizer
Five

(1)在聚烯烃系列共混体系的应用。
(1) the application of polyolefin series blending system.
PE、PP、PS等聚烯烃之间,性能具有互补性,但缺乏良好的相容性,如PE/PP共混体系,由于两组分相容性差,界面黏结力小,其力学性能不理想,加入15%的相容剂EPR后,既改善了共混物的相容性,又提高了冲击强度,并大大地提高延伸率,可制造工程材料配件。
The properties of polyolefin, such as PE, PP, PS, are complementary, but lack good compatibility. For example, PE/PP blends, because of poor compatibility of the two components, low interfacial bonding force and poor mechanical properties. After adding 15% compatibilizer EPR, the compatibility of the blends is improved and the impact strength is improved and greatly improved. Extensibility, can make engineering material accessories.

如:PS/LDPE共混物中加入PS-g-LDPE接枝相容剂,其相容性、拉伸强度均得到改善,随着接枝共聚物添加量的增加,其拉伸强度提高幅度增大。
For example, the compatibility and tensile strength of PS/LDPE blends were improved with the addition of PS-g-LDPE grafted compatibilizer. The increase of tensile strength increased with the increase of the amount of graft copolymers.

(2)在聚酰胺共混体系的应用。
(2) the application of polyamide blends.

聚酰胺是通用工程塑料,是一种在大分子链重复结构中含有酰胺基团的结晶聚合物,很难与其他聚合物共混,若加入相容剂可生产多种聚酰胺共混物,如:PA/PE、PA/PP、PA/EPDM、PA/ABS、PA/PS等,所用相容剂多为反应型,以含羧基和酸酐基的共聚物为主。
Polyamide is a general engineering plastic. It is a crystalline polymer containing amidant groups in the repeated structure of large molecular chain. It is difficult to blend with other polymers. If the compatibilizer is added, a variety of polyamide blends can be produced, such as PA/PE, PA/PP, PA/EPDM, PA/ABS, PA/PS and so on. The main acid anhydride based copolymer.

如:PA与PS共混时,由于两者的极性差别太大,无法得到理想的共混效果,加入马来酸酐接枝聚苯乙烯(PS-g-MAH)作为相容剂后,分散相尺寸变小,相容性得到改善。
For example, when PA and PS blend, because the polarity difference is too large, the ideal blending effect can not be obtained. After adding maleic anhydride grafted polystyrene (PS-g-MAH) as a compatibilizer, the size of the dispersion phase becomes smaller and the compatibility is improved.

(3)在其他聚合物中的应用。
(3) application in other polymers.

①含氯量36%的CPE,可作为PVC和PE共混物的相容剂,如PVC/PE(1:1)共混时,加入20%CPE,可获得良好的共混效果。
(1) CPE containing 36% chlorine can be used as compatibilizer for PVC and PE blends. When PVC/PE (1:1) is blended with 20%CPE, good blending effect can be obtained.

②PPS/ PPO(70:30)共混体系,若加入5%环氧基的反应型相容剂,则共混物不仅保持了PPS的耐高温性,降低了成本,而且力学性能也得到了改善,拉伸强度提高50%,断裂伸长率提高60%。
(2) PPS/ PPO (70:30) blends, if adding a reactive compatibilizer with 5% epoxy groups, the blends not only keep the high temperature resistance of PPS, reduce the cost, but also improve the mechanical properties, increase the tensile strength by 50%, and increase the elongation at break by 60%.

③天然橡胶与聚乙烯共混体系中,由于存在着聚乙烯非结晶部分与非结晶天然橡胶界面相互渗透,力学性能比较差。若加入5%的NR-g-PE嵌段相容剂,两者相容性大大提高、界面张力减小,具有优异的韧性和耐低温性能。
(3) the mechanical properties of natural rubber and polyethylene blends are poor because of the interaction between non crystalline polyethylene and non crystalline natural rubber. If 5% NR-g-PE block compatibilizer is added, the compatibility of the two compatibilizer is greatly improved, the interfacial tension decreases, and the toughness and low temperature resistance are excellent.

④PVC与ABS的溶解度参数非常接近,相容性良好,其共混体系可以不加相容剂,但在PVC/ABS(100:20)共混体系中加入2%CPE相容剂,比不添加CPE的冲击强度提高了22%。
(4) the solubility parameters of PVC and ABS are very close, and the compatibility is good. The blend system can not be used as compatibilizer, but the 2%CPE compatibilizer is added to the PVC/ABS (100:20) blends, and the impact strength of the blend is 22% higher than that without CPE.

⑤今天塑料工业的发展围绕着“塑料与环境问题”,是一件关系到保护环境、合理利用二次资源造福人类的大事。
Today, the development of the plastics industry revolves around "plastic and environmental problems". It is a major event that concerns the protection of the environment and the rational use of the two resources for the benefit of mankind.

为此,相容剂在废旧塑料回收再生利用的问题上显得越来越重要,废旧塑料往往混杂在一起,无论是人工分拣或者物理方法进行分选,都要耗费大量人力和能源。采用相容技术和用相容剂可以使回收来的废旧塑料无需严格分拣,就可使各种塑料混合物加工再利用。
Therefore, the compatibilizer is becoming more and more important in the recycling and recycling of waste plastics. Waste plastics are often mixed together. No matter whether artificial sorting or physical method is selected, it takes a lot of manpower and energy. By using compatible technology and compatibilizer, the recovered waste plastics need not be sorted strictly, so that all kinds of plastic mixtures can be processed and reused.
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