Inorganic high molecular plastics and rubber toughening agent

Abstract

The invention provides an inorganic polymer rubber-plastic toughener using attapulgite clay as a main raw material, which is evenly dispersed in a high polymer matrix, and has good compatibility with high polymer. The method for preparing the inorganic high polymer rubber-plastic toughener comprises the following steps: (1) purifying the attapulgite clay at a high temperature; (2) grinding and sorting; (3) acidizing; (4) thermal activating; (5) oil charging; and (6) surface treating. The toughener uses the property of fibrous microcellular structure of the attapulgite clay, modifies fibrous pore canals of inner layers of particles, improves the compatibility of the toughener with the high polymer on the premise that the fibrous structure of the attapulgite clay is maintained, has unique modification function, not only replaces toughener resin, but also proves that compared with the prior combination of padding / toughener resin, a plastic product blended by the inorganic high polymer rubber-plastic toughener and a plurality of synthetic resins has preferable aging resistance and physical property through a plurality of applied tests.

Description

technical field [0001] The invention relates to an inorganic polymer rubber and plastic toughening agent, which belongs to the field of processing aids for rubber and plastic products. Background technique [0002] In the rubber and plastic processing industry, rigidity and toughness are two important performance indicators. How to ensure that the product has good rigidity and toughness at the same time has been one of the important topics in material science research for a long time. Some polymeric resins are too rigid, and the finished products are brittle and easy to break, such as PP, ABS, PC, PET and other resins. In addition, in order to reduce material costs, all plastic products must be filled with inert inorganic powders, such as CaCO 3 , SiO 2 , talcum powder, etc., these materials have defects such as large specificity, strong hygroscopicity, aging resistance and high brittleness of filled products. At present, several large companies in the world have develope...

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Problems solved by technology

However, due to the large specific surface area of ​​attapulgite clay, the fibers are irregularly distributed in flocculent form, the surface is rough, the processing fluidity is poor, the particles are easy to agglomerate, and the surface contains polar hydroxyl groups, so it is compatible with non-polar organic polymers. The affinity is very poor, and it is often only used as an inert filling material in the production process of plastic products, and it cannot give full play to the toughening effect of attapulgite materials

[0009] At present, the application of attapulgite clay in China is mainly in oil decolorization and desiccant. It has not been applied in the rubber and plastic industry. Even if it is used, it is added to reduce costs and affect the physical properties of the product.

For the comprehensive modification of attapulgite clay and its application in the rubber and plastic industry, as a special inorganic rubber and plastic toughening agent, there is currently no domestic

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