Polybutadiene Nano powder rubber toughening polypropylene composite and preparation method thereof

Abstract

The invention relates to a polybutadiene nano powder rubber toughening polypropylene composite and a preparation method thereof; at present, the correlational research that the polybutadiene nano powder rubber is used for modifying polypropylene in a blending way; the composite comprises the following ingredients by weight parts: 90-99.5 parts of polypropylene and 0.5-10 parts of nano powder rubber; the nano powder rubber comprises polybutadiene nano powder rubber latex with a complete cross-linked structure and crosslinking sensitizing agents, in the weight part ratio of the nano powder rubber, the polybutadiene nano powder rubber latex and the crosslinking sensitizing agents are 95-99.99 parts and 0.01-5 parts respectively by weight part, in the weight part ratio of the polybutadiene nano powder rubber latex, butadiene and styrene are 95-100 parts and 0-5 parts respectively by weight parts; the polybutadiene nano powder rubber toughening polypropylene composite is used for remodeling polypropylene.

Description

Technical field: [0001] The invention relates to a composition of modified polypropylene, that is, polybutadiene nano-powder rubber toughened polypropylene and a preparation method of the composition. Background technique: [0002] Polypropylene (PP) is one of the three major plastics whose output is second only to polyethylene and polyvinyl chloride. It has excellent heat resistance, chemical corrosion resistance and electrical insulation, and has good processing performance, so it is widely used in machinery, chemical industry, electric power and transportation and other fields. However, polypropylene has poor toughness and notch sensitivity due to its high crystallinity and coarse spherulite size, especially at low temperature (the embrittlement temperature is only 8°C), which limits its application in a wider range of fields. Therefore, the research on the toughening modification of polypropylene has always been a research hotspot in this field at home and abroad. [0...

AI Technical Summary

Problems solved by technology

[0007] In the modification of rubber-plastic blends, for incompatible systems, a certain component is usually modified first, and then used as a compatibilizer to increase the interfacial effect in the blend system. The mechanical properties can be improved programmatically, but due to problems such as uniform dispersion, stability, and phase domain size (micron or submicron), the toughening efficiency is low, the modification process is complicated, the melting temperature is high, and the energy consumption is large.