Multi-element toughened and modified special material for PP-R pipe and preparation method thereof

Abstract

The invention discloses a multi-element toughened and modified special material for a PP-R pipe. The multi-element toughened and modified special material for the PP-R pipe comprises, by weight, 85-95 parts of PP-R resin, 1-5 parts of a toughening agent I, 2-5 parts of a toughening agent II, and 2-5 parts of inorganic rigid particles; the PP-R resin is a III type polypropylene randon coplymer and comprises natural color granules, colored granules and powder materials; main components in the toughening agent I, the toughening agent II and the inorganic rigid particles are all PP-R resin; the toughening agent I further comprises a beta nucleating agent; the toughening agent II further comprises elastomer and compatilizer; and the inorganic rigid particles further comprise inorganic rigid powder materials. The invention further provides a preparation method of the multi-element toughened and modified special material for the PP-R pipe; by preparing the toughening agent I, the toughening agent II and the inorganic rigid particles, then the low temperature toughed special material for the pipe is prepared in a compositing manner, and the method is simple. The special material for the PP-R pipe has a good toughening effect, the hydraulic performance of the pipe is not lowered, the rigidity of the pipe is improved, and good application prospects are achieved.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of polymer materials, in particular to a multi-component toughening modified PP-R pipe special material and a preparation method thereof. [0003] 【Background technique】 [0004] Random copolymerized polypropylene (PP-R) is a type III polypropylene developed by random copolymerization of ethylene monomers into the main chain of polypropylene (PP). It has excellent performance and is widely used in various fields of national production. Among them, pipes made of PP-R have excellent comprehensive properties such as low thermal conductivity, high temperature resistance, corrosion resistance, and hot-melt welding, and are suitable for cold and hot water transportation such as residential home improvement, office buildings, and municipal administration. In the domestic hot and cold water pipe demand, polypropylene pipe accounts for more than 50%, and has become one of the most important materials in the d...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a multi-component toughened and modified PP-R pipe special material and its preparation method, which aims to solve the problem of PP-R pipes in the prior art when used under low temperature conditions. , prone to brittle fracture, the scope of application is limited, and the current toughening modification method can not really achieve the technical problem of improving the comprehensive performance of PP-R pipes

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