Chiral silicon dioxide fiber-reinforced foamed polypropylene composite material

Abstract

The invention relates to a chiral silicon dioxide fiber-reinforced foamed polypropylene composite material which comprises a polypropylene resin, talcum powder, a chiral silicon dioxide fiber, a surfactant solution, a micro-pore foaming agent and a phase-change material microcapsule and an aid, wherein the surfactant solution is a linear sodium alkyl benzene sulfonate solution. Due to adoption ofthe chiral silicon dioxide fiber, the mechanical properties of the material can be improved; the chiral silicon dioxide fiber has chiral induction under the action of hydrogen bonds among molecules, orientation of polypropylene molecular chain fragments can be reduced, the polypropylene molecular chain fragments can be regularly arranged, and thus the mechanical properties of a polypropylene injection molding finished product can be improved; meanwhile, due to a chiral spiral structure of the chiral silicon dioxide fiber, and through chiral spiral induction on polypropylene, winding of molecular chains can be intensified, and the mechanical properties of the polypropylene injection molding finished product can be further improved; and due to adoption of the chiral silicon dioxide fiber, mechanical properties of a polypropylene material and an injection molding part thereof can be effectively improved.

Description

technical field [0001] The invention relates to the field of polypropylene materials, in particular to a chiral silica fiber reinforced foamed polypropylene composite material. Background technique [0002] In recent years, polypropylene foam injection molding technology has attracted more and more attention. This technology refers to the use of polypropylene material as the matrix, through the injection molding process, under the action of gas internal pressure, the middle layer of the product is densely covered with closed micropores with a size ranging from ten to tens of microns, and there are dense skin structures on both sides; thus To achieve the purpose of material saving and weight reduction. This technology can be divided into physical method and chemical method; the chemical method refers to adding a certain amount of foaming agent to polypropylene. After the injection molding is completed, the part material expands under the action of the foaming agent to form a...

AI Technical Summary

Problems solved by technology

However, the mechanical properties of injection-molded foamed polypropylene products are often not high, and reinforcement is required; fiber (such as glass fiber, carbon fiber, silica fiber) reinforcement materials are usually added to improve its mechanical properties, but the reinforcement effect remains to be seen. Further improve