7results about How to "Reduce vulcanization" patented technology

The present invention discloses an environmentally friendly rubber plasticizer and a preparation method and application thereof, and belongs to the field of polymer material processing. The preparation method of the rubber plasticizer provided by the present invention comprises mixing plant asphalt and sulfur, heating them for reaction, and then dehydrating them. The preparation method provided by the present invention can obtain an environmentally friendly rubber plasticizer product with relatively cheap raw materials, and the processing technology of the product is relatively simple, the equipment investment is relatively small, and it has a very broad application prospect. The present invention also provides a rubber plasticizer obtained by the above preparation method, and a reclaimed rubber whose preparation raw materials include the above rubber plasticizer.

The EFB battery comprises a positive plate, a negative plate, a partition plate, electrolyte and a shell, the positive plate comprises a positive plate grid and positive lead plaster coated on the positive plate grid; the negative plate comprises a negative plate grid and negative lead plaster coated on the negative plate grid; the positive lead paste is prepared from the following raw materials in parts by weight: 95 to 105 parts of lead powder, 0.05 to 0.15 part of super-strong fiber, 0.05 to 0.2 part of carbon fiber, 0.2 to 0.4 part of carboxymethyl cellulose sodium, 8 to 10 parts of sulfuric acid and 9 to 11 parts of deionized water; the negative electrode lead paste is prepared from the following raw materials in parts by weight: 95 to 105 parts of lead powder, 0.05 to 0.15 part of super-strong fiber, 0.55 to 0.75 part of barium sulfate, 0.05 to 0.2 part of humic acid, 0.05 to 0.3 part of Norway lignin, 0.02 to 0.06 part of carbon black, 0.05 to 0.2 part of carbon fiber, 1.05 to 1.95 parts of an additive A, 0.05 to 0.2 part of an additive B, 0.02 to 0.05 part of ketjen black, 7 to 9 parts of sulfuric acid and 7.5 to 9.1 parts of deionized water. The partition plates are PE partition plates, vertical ribs are arranged on the positive electrode side, and tooth-shaped ribs are arranged on the negative electrode side. By improving the lead plaster and the partition plate, the service life of the battery is effectively prolonged, and the charging acceptance is enhanced.

The utility model discloses a vulcanizing machine with protection function belongs to vulcanization processing technical field, it includes mould, the mould both sides are equipped with heat insulating plate, heat insulating plate one side is fixedly connected with the insulating board, the insulating board one side is installed with the protection plate, the protection plate both sides are fixedly connected with two first shell, the first shell inner wall is installed with the supporting plate. This vulcanizing machine with protection function, before vulcanizing machine work, operating personnel place heat insulating plate, insulating board and protection plate in mould both sides, rotate handle again, handle drives first bevel gear rotation, first bevel gear drives second bevel gear and threaded rod rotation, threaded rod promotes the sliding of clamping block in the clamping groove, until clamping block and clamping groove are completely connected, after the heat of vulcanizing machine work, heat is blocked by heat insulating plate, insulating board, prevent operating personnel when operating this vulcanizing machine, are damaged by high temperature influence, have improved the functionality and security of this vulcanizing machine.

The invention provides a charcoal-based metal oxide composite material as well as a preparation method and application thereof, and belongs to the technical field of viscosity reduction of thickened oil. The rich porous structure and high specific surface area of the biochar are used as a carrier of the active component, so that the active component is uniformly dispersed, active sites are increased, and the catalytic activity is improved; iron oxide can catalyze hydrocarbon in the thickened oil to generate oxidation reaction to generate oxygen-containing functional groups, so that the viscosity of the thickened oil is reduced; niO has good hydrogen transfer capacity and can promote hydrogen atoms to be transferred from a hydrogen donor to unsaturated hydrocarbon of the thickened oil, so that the viscosity of the thickened oil is reduced; the rare earth oxide can enhance the reaction activity of ferric oxide and NiO, promote the oxidation-reduction reaction, reduce the temperature of the catalytic reaction and expand the temperature application range; the rare earth oxide can also protect the transition metal oxide, so that vulcanization is reduced, and the service life is prolonged; the silicon dioxide layer can avoid loss of active components, and the cycle service life is prolonged.

The invention relates to a rubber composition for prolonging scorching time of fluorosilicone rubber and a preparation method thereof. The composition comprises the following components in parts by weight: 100 parts of fluorosilicone raw rubber, 20-60 parts of filler, 30-60 parts of scorch retarder and 1-10 parts of structured control agent. The composition provided by the invention takes the organosiloxane compound as the scorch retarder, has the effect of prolonging the scorch time and storage period of the fluorosilicone rubber, can effectively prevent the early vulcanization phenomenon of the fluorosilicone rubber in the processing processes of mixing, calendering, extruding and the like, and is suitable for various industrial processing modes of mould pressing vulcanization, injection molding, extrusion molding and the like.

The invention relates to the field of hydrogenation catalysts, in particular to a sulfuration type catalyst, a hydrogenation catalyst, a preparation method of the sulfuration type catalyst and application of the hydrogenation catalyst. The catalyst comprises an active phase and a carrier, wherein the active phase comprises a VIB group metal element, a lanthanide series metal element and a VIII group metal element; after the catalyst is vulcanized, the active phase is of a tower-shaped structure. The hydrogenation catalyst is of a tower-shaped structure after being vulcanized, active sites such as edges, corners and edges are fully exposed, the (polycyclic aromatic hydrocarbon) hydrogenation activity is good, the desulfurization and denitrification rate is high, the hydrogenation catalyst can be used under relatively mild conditions, and the service life is long.

Provided is a condensation-reaction-curable silicone coating agent composition which contains, as a main component, a hydrolysable-group-containing organosiloxane mixture and also contains a curing catalyst, in which the hydrolysable-group-containing organosiloxane mixture contains an organotrisiloxane compound having a specified molecular structure in which there is at least one non-substituted, halogen-substituted or alkyl-substituted phenyl group in the molecule thereof and at least four hydrolysable groups are contained at molecule chain both ends thereof and an organodisiloxane compound having a specified structure in which there are at least two non-substituted, halogen-substituted or alkyl-substituted phenyl groups on one silicon atom in the molecule thereof and at least two hydrolysable groups are contained on the other silicon atom in the molecule thereof, and the organotrisiloxane compound and the organodisiloxane compound are contained in the hydrolysable-group-containing organosiloxane mixture at a specified blend ratio. The silicone coating agent composition has excellent storage stability although no organic solvent is contained, and can be cured rapidly at ambient temperature after being applied on a substrate to provide a cured coating film having excellent transparency, adhesiveness and the like, having excellent conformability to the shape of the substrate upon the bending of the substrate, and capable of preventing the corrosion of the substrate.