3 results about "Vinylidine chloride" patented technology

This invention relates to an aramid rope conveyor belt and its preparation method, belonging to the field of conveyor belt manufacturing technology. The aramid rope conveyor belt, by mass fraction, comprises: a composite coating, an aramid rope core layer, and an elastic buffer layer; the aramid rope core layer comprises modified aramid fibers; the elastic buffer layer, by mass fraction, comprises high-saturation nitrile rubber, carbon black, peroxide, and plasticizer; the composite coating, by mass fraction, comprises, from the outside to the inside, a hydrophobic wear-resistant layer, a barrier layer, and a filler layer; the hydrophobic wear-resistant layer comprises modified polyurethane, nano-ZnO, zinc stearate, titanate coupling agent, and defoamer; the barrier layer comprises fluororubber, polyvinylidene chloride, and nano-montmorillonite; and the filler layer comprises polytetrafluoroethylene nano-dispersion, nano-graphene, and silane coupling agent. The aramid rope conveyor belt of this invention can adapt to high-humidity and high-salt-spray environments such as ports, extending the service life of the conveyor belt.

The invention discloses a stacking plastic bucket with high sealing performance and a preparation method thereof, and belongs to the technical field of high polymer materials, the preparation method comprises the following steps: adding a compatilizer into an alpha-olefin ethylene copolymer, mixing, adding polyvinylidene chloride powder, nano montmorillonite and talcum powder, and mixing to obtain a mixture; mixing dicumyl peroxide and triallyl isocyanurate, and spraying the mixture to the surface of the mixture for mixing; adding the pigment and the composite antioxidant; extruding to obtain a barrel blank master batch; performing injection cooling to obtain a barrel blank; and dipping and draining. The binding performance of the alpha-olefin ethylene copolymer, polyvinylidene chloride and other raw materials is optimized by preparing the compatilizer, the binding tightness between the raw materials is greatly improved, medium permeation channels are effectively reduced, a uniform and compact sealing layer is formed on the barrel opening in cooperation with the two-stage impregnation process and the compound emulsifier, meanwhile, the barrel cover is made of differentiated raw material proportions, and the service life of the barrel cover is prolonged. And the overall sealing performance and the medium infiltration resistance of the plastic barrel are cooperatively improved.

A ceramicized composite material, its preparation method, and its application, comprising, by weight: 100 parts of silicone rubber matrix; 50-120 parts of ceramic-forming filler system; 10-40 parts of active fire extinguishing microcapsules; 5-20 parts of sacrificial template agent; and 2-10 parts of synergistic additives. The ceramic-forming filler system, by weight, comprises: 30-60 parts of synthetic fluorophlogopite powder; 15-40 parts of low-melting-point glass powder; and 5-20 parts of reinforcing skeleton filler. The core material of the active fire extinguishing microcapsules is perfluorohexanone; the wall material of the active fire extinguishing microcapsules has a double-layer structure, with an inner layer of melamine resin and an outer layer of polyurea or silica grafted with vinyl groups. The sacrificial template agent is a core-shell structured thermoplastic expandable microsphere, with a core material of liquid alkane and a shell material of a copolymer of vinylidene chloride, acrylonitrile, and methyl methacrylate; the expansion temperature of the sacrificial template agent is 180°C-220°C, and its pyrolysis temperature is 300°C-400°C. This invention has the advantages of active flame suppression, ultra-low thermal conductivity, and robust structure.