Production method of co-intercal type nano-polypropylene composite material

Abstract

The invention relates to a co-intercalation nanophase polypropylene composite material. The compositions by weight percentage of the co-intercalation nanophase polypropylene composite material are: 70 to 100 percent of PP materials and 0.3 to 40 percent of nanophase filler, wherein, 1 weight portion of the nanophase filler contains 10 to 90 percent of inorganic stratified materials and 10 to 90 percent of co-intercalating agent. The production method comprises grinding, mixing of the nanophase filler, extrusion and granulation. By adoption of the co-intercalation nanophase polypropylene composite material, due to addition of acrylic ester, the polarity mu of the PP materials is improved to be 0.65 and the problem of cementation of the PP materials and polyurethanes is effectively solved; the acrylic ester is made to obtain better dispersion effect, and the scale reaches between 10 and 30 nanometers, thereby having a very large interface area; chemical bonding makes inorganic disperse phases and a polymer substrate interface have ideal splicing performance; the problem of unmatched thermal expansion coefficients of inorganic substance and a polymer substrate can be solved; and the superior mechanical property and high thermal resistance and barrier property of the inorganic substance can be given full play.

Description

technical field [0001] The invention relates to composite materials in the high-tech field using PP as a raw material, especially adding nano-fillers compounded by inorganic layered materials, acrylates and other additives to form a new type of composite material—co-intercalation nano-polypropylene composite material production method. Background technique [0002] At present, ABS engineering materials are generally used in the domestic and foreign markets for the framework of automobile dashboards. This material has good comprehensive performance, easy processing and high impact strength, so it is widely used, but its thermal deformation temperature is low (generally at 80 ℃), flammable, heavy and expensive, PP material has stronger impact strength, surface stiffness and toughness, and its heat distortion temperature is generally 100 ℃, which can be increased to 115 ℃ by adding nano fillers. [0003] The fluidity of the PP material is good, the melt index is much higher th...

AI Technical Summary

Problems solved by technology

The traditional PP material is a non-polar material, and its difficulty in bonding with polyurethane foam is a common technical problem in the automotive instrument panel industry.

[0004] There are two key factors that must be solved for the bonding of PP materials and polyurethane: the first is the polarization treatment of the surface of the PP material. Since the PP material is a non-polar material, it cannot be fused with polyurethane under normal circumstances. The second is to obtain a better dispersion effect of acrylate, although acrylate can improve the polarity of the material, but because it cannot be better dispersed in the normal state, the effect of polarization treatment is not good