PPS composite material, and preparation method and application thereof

Abstract

The invention discloses a PPS composite material which comprises the following components in parts by weight: 100 parts of PPS resin, and 0.1-10 parts of a phosphorous acid metal salt. By adding the phosphorous acid metal salt, the crystallization rate of the PPS composite material can be increased. The PPS composite material has the advantage of rapid crystallization, and the melt flow rate of the PPS composite material can be increased.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PPS composite material and a preparation method thereof. Background technique [0002] Polyphenylene sulfide (PPS) has excellent heat resistance, solvent resistance, high dimensional stability, excellent dielectric properties, excellent flame retardancy and mechanical properties, and is widely used in electronics, automobiles, machinery, and chemical industry and other fields. However, the crystallization speed of PPS is relatively slow, which leads to a longer molding cycle and lower production efficiency, and due to too long crystallization time, it is easy to cause insufficient strength when the mold is released, resulting in problems such as mold capping, top white, and top convex. , Therefore, how to increase the crystallization speed of PPS and shorten the molding cycle is an important topic in the research of PPS modification. [0003] However, since the nucl...

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Problems solved by technology

However, the crystallization speed of PPS is relatively slow, which leads to a longer molding cycle and lower production efficiency, and due to too long crystallization time, it is easy to cause insufficient strength when the mold is released, resulting in problems such as mold capping, top white, and top convex. Therefore, how to increase the crystallization speed of PPS and shorten the molding cycle is an important topic in the research of PPS modification.

[0003]However, since the nucleation methods and nucleation mechanisms of various polymers are not exactly the same, the prior art applied to PP, PE, LCP and other thermoplastic resins Nucleating agents cannot be used in PPS composites

Such as common ultra-fine talcum powder, metal carboxylate, etc., because the main chain of PPS molecule contains a large number of benzene rings, which is very rigid and difficult to form microcrystalline nuclei around the nucleating agent, so ordinary nucleating agents do not promote the crystallization of PPS. effect

[0004]Furthermore, adding fillers to PPS composites will lead to a decrease in melt flow rate. On the premise of improving the crystallization rate of PPS composites, if PPS composites The fluidity of the melt decreases, which may lead to defects such as incomplete filling, holes, and incomplete surfaces in the part

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