Modified nano zinc oxide-glass fiber-polypropylene composite material and preparation method thereof

Abstract

The invention belongs to the field of materials, relates to a novel polypropylene material, and in particular relates to a modified nano zinc oxide-glass fiber-polypropylene composite material and a preparation method thereof, the modified nano zinc oxide-glass fiber-polypropylene composite material comprises A and B components, the A component comprises 45 to 75 parts by weight of polypropylene,0.15 to 0.2 part by weight of an antioxidant and 0.15 to 0.2 part of a lubricant; the B component includes 10 to 30 parts of glass fiber and 1-3 parts of modified nano-zinc oxide, and the modified nano zinc oxide is obtained by use of a silane coupling agent for chemical modification of the surface of nano zinc oxide. The nano zinc oxide is added to improve the mechanical properties of the composite material, the preparation process is simple and easy, the needs of the combination of the modified nano zinc oxide, the glass fiber and the polypropylene can be met without adding of a compatibilizer.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a novel polypropylene material, in particular to a modified nano zinc oxide-glass fiber-polypropylene composite material and a preparation method. Background technique [0002] Polypropylene (pp) has developed rapidly since its industrialization in 1957. It is a general-purpose plastic with relatively large output and consumption. Polypropylene has good processing properties. It has excellent corrosion resistance and electrical insulation, and its mechanical properties, including tensile strength, compressive strength, and hardness, are better than low-pressure polyethylene. And it also has outstanding rigidity and folding resistance, and it is cheap. The shortcoming of polypropylene that needs to be overcome urgently is: the molding shrinkage rate is relatively large. Easy to be brittle at low temperature, insufficient wear resistance, low heat distortion temperature, poor light resis...

AI Technical Summary

Problems solved by technology

Polypropylene is a non-polar macromolecule, and it is difficult to directly connect with glass fiber. It needs to introduce polar functional groups. The method often used in commercial production is to add unsaturated carboxylic acid or its anhydride modified polypropylene to improve the interface with glass fiber. The interface connection of graft-modified polypropylene and non-grafted modified polypropylene is used as the impregnation base material. Polypropylene needs to use polypropylene resin with ultra-high melting index to meet the requirements of good glass fiber impregnation

However, even after the glass fiber is modified with a silane coupling agent, the result is still not ideal, because PP is still inert at this time, and it does not have the same bonding force as nylon, saturated polyester and glass fiber.

Images