Modified pyrophyllite for nylon corrugated pipe material and preparation method thereof

Abstract

The invention discloses modified pyrophyllite for a nylon corrugated pipe material and a preparation method thereof. The modified pyrophyllite is prepared from the following raw materials in parts by weight: 80-100 parts of pyrophyllite, 15-25 parts of tuff, 12-18 parts of ball clay, 3-6 parts of waste animal and vegetable oils and fats, 2-3 parts of bis-(gamma-triethoxysilylpropyl)tetrasulfide, 1.5-2.5 parts of cobalt neodecanoate, 10-15 parts of polyisocyanate adhesive, 3-4 parts of N,N-dimethyl-p-toluidine, 6-12 parts of 1,4-butane sultone, 3-5 parts of ethylene bisstearamide, 7-13 parts of sucroseocta-acetate, 5-10 parts of cellulose acetate butyrate, 40-60 parts of polyhydroxybutyrate, 20-30 parts of vinyl chloride-vinyl isobutyl ether copolymer resin, 16-22 parts of polyvinyl butyral, 10-15 parts of acetyl tributyl citrate, 2-3 parts of pentaerythritol tetra(3-mercaptopropionate), and 4-7 parts of an auxiliary agent. Pyrophyllite is subjected to a certain modification treatment, the surface hydrophilicity is reduced, the compatibility and the chemical affinity with a nylon material are improved, the dispersion in a nylon base material is improved, comprehensive performance of a nylon composite material is improved, and the mechanical strength and wear resistance of the nylon composite material are improved significantly.

Description

technical field [0001] The invention relates to a modified pyrophyllite for nylon bellows material and a preparation method thereof, belonging to the technical field of inorganic fillers. Background technique [0002] Pyrophyllite is a mineral with layered silicate structure, the main chemical components are SiO2 and Al2O3. Pyrophyllite powder has the characteristics of heat resistance, corrosion resistance, insulation, low hardness, low refractive index, flaky particles, etc. It is one of the commonly used inorganic mineral fillers for nylon materials. However, there are hydrophilic groups on the surface of pyrophyllite, which are polar, while nylon materials are hydrophobic, so the compatibility between the two is poor, and it is difficult to form a good bond at the interface. Therefore, in order to improve the bond between pyrophyllite and nylon Compatibility, to enhance the interfacial combination of the two, the pyrophyllite must be modified. Contents of the inventio...

AI Technical Summary

Problems solved by technology

However, there are hydrophilic groups on the surface of pyrophyllite, which are polar, while nylon materials are hydrophobic, so the compatibility between the two is poor, and it is difficult to form a good bond at the interface. Therefore, in order to improve the bond between pyrophyllite and nylon Compatibility, to enhance the interfacial combination of the two, it is necessary to modify the pyrophyllite