2results about How to "Meet material performance requirements" patented technology

The application belongs to the technical field of functional polymer materials, and particularly relates to an acid and alkali resistant polytetrafluoroethylene composite material and a preparation method and application thereof, wherein the polytetrafluoroethylene composite material comprises the following raw materials in parts by weight: PFA 89 parts, plasticizer 1-4.5 parts, coupling agent 0.5-2 parts, weathering agent 0.5 part and functional additive 4-9 parts; the functional additive prepared from flake graphite, polyamide acid and PFPE-DMA is uniformly coated on the surface of the PFA and the like in the form of a polar dispersion liquid, can play a role of filling structure and thermal self-polymerization in the PFA melt extrusion molding process, construct a rigid-flexible polymer anti-permeation acid and alkali resistant network, and is suitable for manufacturing complex corrosion prevention parts under extreme working conditions.

The invention discloses a TPV (thermoplastic vulcanizate) modified polypropylene micro-foaming composite material and a preparation method thereof, and belongs to the field of blending modification processing of high polymer materials. The micro-foaming composite material comprises the following raw materials in percentage by mass: 50%-65% of polypropylene resin, 10%-25% of thermoplastic vulcanizate, 0%-10% of mineral powder, 2%-4% of a foaming agent, 0%-0.5% of a nucleating agent, 0.5%-1.5% of a deodorant and 0.5%-2.5% of a processing aid B. The prepared TPV modified polypropylene micro-foaming composite material has good appearance, a uniform foaming layer and low odor, the comprehensive weight reduction can reach 20%-30%, and the TPV modified polypropylene micro-foaming composite material can be applied to parts such as automobile door panels, stand columns and decorative plates.