Thermal stabilizer and composite material comprising the thermal stabilizer

Abstract

The invention belongs to the technical field of polymer modification, and provides a thermal stabilizer composed of N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-benzene Diformamide and zinc compound, wherein the zinc compound is selected from zinc carboxylate, zinc carbonate, zinc titanate, zinc molybdate, zinc ferrite, zinc sulfate, zinc phosphate, zinc oxide, zinc borate, zinc halide Any one or a mixture of several. Compared with the prior art, the heat stabilizer provided by the present invention can: give the resin base material good long-term heat resistance; itself has better dispersion in the resin; improve the floating of the surface of the glass fiber reinforced injection molded part fiber condition; long-term injection molding does not corrode the mold; does not affect the CTI value (relative tracking index) of the product.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, and relates to a thermal stabilizer and a composite material containing the thermal stabilizer. Background technique [0002] In the past, in the field of polymer modification technology, especially for the research on the heat resistance of composite materials, the existing technology has provided a variety of heat resistance additives for selection. For example, the book "Plastic Additives Handbook" edited by Hans Zweifer in Switzerland introduced phenolic heat stabilizers, phenol-sulfur synergistic heat stabilizers, phosphite heat stabilizers, copper salt heat stabilizers, copper iodine heat stabilizers, etc. Compound synergistic heat stabilizers, aromatic amine heat stabilizers, polyol heat stabilizers and sterically hindered amine heat stabilizers, etc., using specific experiments to discuss the effects and limitations of each heat-resistant additive. [0003] The research on t...

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Problems solved by technology

[0006] 150°C, especially 170°C, 190°C, or even 210°C, polyol heat stabilizers and iron powder heat stabilizers are often used in the industry, but the shortcomings of the two are obvious and cannot be overcome

The polyol heat stabilizer will have obvious white precipitation in high temperature and high humidity environment, resulting in the formation of white frost on the surface of the product, which not only greatly affects the appearance, but also seriously reduces the heat resistance of the product due to the precipitation of the heat stabilizer

Iron powder heat stabilizer has poor dispersion in some specific resin systems, such as nylon system; it seriously affects the initial mechanical properties of the material; it has a great negative impact on the electrical properties of the material, especially the CTI value; long-term use is easy to damage the mold Causes severe corrosion; expensive

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