Novel PP (polypropylene) elastomer TPO (thermoplastic polyolefin)

Abstract

The invention relates to a novel PP (polypropylene) elastomer TPO (thermoplastic polyolefin). The novel PP elastomer TPO is specifically prepared by the following steps of preparing a primary master batch from UHMWPE (ultrahigh molecule weight polyethylene) resin, SiO2 (silicon dioxide) powder, processing oil, an alpha-nucleating agent and an antioxidant by a melting type preparation method; melting and blending the primary master batch, the UHMWPE resin and PP resin according to a proper ratio, so as to obtain a modified material, namely the elastomer TPO. The novel PP elastomer TPO has the advantages that by adopting the melting blending method, the elastomer TPO is added into a PP substrate, so that the anti-impact property and the low temperature-resistant property of the PP resin areimproved; the common plastic double-screw extruder and related equipment can be adopted; the preparation technology and production process of the melting extruding method are suitable for production.

Description

technical field [0001] The invention belongs to the field of PP blend production, and relates to the improvement of the impact strength of PP, especially the novel PP elastomer TPO. Background technique [0002] PP has excellent overall performance and less disadvantages, so it can replace other expensive materials in many aspects. Compared with polyethylene, polypropylene can be used at higher temperatures, has better chemical resistance, higher tensile strength and elongation at break than PE, and has outstanding rigidity and bending resistance. It is called The most important thing about pleated glue is that PP raw materials are easy to obtain, the production cost is very low, and the synthesis and processing are easy, so it is widely used. But despite this, PP also has some particularly prominent shortcomings: the impact strength is particularly low, especially in low temperature environments, it is easy to be brittle, not wear-resistant, difficult to dye, and the shrin...

AI Technical Summary

Problems solved by technology

But despite this, PP also has some particularly prominent shortcomings: the impact strength is particularly low, especially in low temperature environments, it is easy to be brittle, not wear-resistant, difficult to dye, and the shrinkage rate during injection molding is relatively large; It is difficult to meet the use requirements, so that PP cannot be used to make structural materials on a large scale

These shortcomings limit the application of PP in some engineering fields to a large extent

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