Supported beta crystal core formation agent and preparation method thereof

Abstract

The present invention discloses a load-type Beta-nucleating agent and a preparation method thereof, the load-type Beta-nucleating agent of the present invention consists of nano calcium carbonate and aliphatic dicarboxylic acid, and the weight ratio of which is 5 to 1000: 1. The present invention adopts the nano calcium carbonate with a big surface area as a carrier, adopts a simple method to highly disperse the dicarboxylic acid on the nano-calcium carbonate surface, makes use of a chemical reaction of the nano-calcium carbonate and the dicarboxylic acid to form the high efficient beta-nucleating agent which is the same with the mixture of pimelic acid and calcium stearate aiming at the problems of the existing beta-nucleating agents. The present invention realizes the purposes of reducing the consumption of the dicarboxylic acid, reducing the cost and improving the nucleating efficiency as the dicarboxylic acid on the nano-calcium carbonate is highly dispersed and the effective nucleating points are only formed on the surface of the nano-calcium carbonate.

Description

technical field The invention relates to a beta crystal nucleating agent and its preparation technology. Background technique β-crystalline polypropylene is a new variety of polypropylene. In addition to maintaining the good comprehensive properties of α-crystalline polypropylene, it also has several times the impact strength of α-crystalline polypropylene and thermal deformation The temperature is greatly increased, low tensile yield strength and tensile elastic modulus, high toughness and ductility under high-speed stretching, and obvious strain hardening. It will have a wide range of applications in industrial pipelines, battery casings, membranes, microporous membranes and microporous fibers for gas exchange. At present, adding β-crystal nucleating agent is the most effective way to obtain high-content β-crystal polypropylene. So far, β-crystal nucleating agents mainly include: (1) organic dyes. Such as quinacridone red (E3B) and other condensed-ring organic substance...

AI Technical Summary

Problems solved by technology

However, some of the above β-crystal nucleating agents have problems such as low nucleation efficiency, high cost, low heat resistance, poor compatibility with PP, and easy coloring of products.

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