6results about How to "Good reinforcing effect" patented technology

The invention discloses a kettle shell plastic injection molding process and a high-temperature-resistant modification method. The kettle shell plastic injection molding process comprises the steps of preparation of a modified plastic raw material, drying pretreatment before injection molding, gas-assisted collaborative injection molding and stepped annealing post-treatment. The preparation raw materials comprise a butadiene-propenyl polymer, a polyester polyol prepolymer and the like, and plastic particles are obtained through raw material modification, mixing, dynamic vulcanization and melting granulation; after the particles are dried, a blank is formed through gas-assisted cooperative injection molding, stress is eliminated through stepped annealing, and finally a finished product is obtained. The problems of product deformation, mechanical attenuation, many forming defects, poor long-term reliability and the like in the prior art are effectively solved, the high temperature resistance, the mechanical strength, the forming precision and the anti-aging performance of the product are remarkably improved, the process is advanced, the practicability is high, and the service life of the product is prolonged.

The application discloses a carbon nanotube and carbon black composite conductive filler and a PVC conductive composite material and a preparation method thereof. The carbon nanotube and carbon black composite conductive filler comprises a composite of carbon nanotubes and carbon black obtained by mixing carbon nanotubes after surface grafting and carbon black after surface grafting through ball milling and grinding, and forms a conductive filler with a "grape cluster" structure. The structure utilizes the long-axis structure of the carbon nanotubes, prolongs the axial length of the carbon black, forms a rich conductive network, changes the point-like conduction of the carbon black into linear conduction, and after coupling, the conductive performance can be greatly improved.

The application relates to the technical field of carbon fiber composite materials, and particularly discloses a unit layer base cloth for preparing a carbon fiber crucible preform, the carbon fiber crucible preform and a preparation method thereof. The unit layer base cloth disclosed by the application is integrally composed of an upper part of a rectangular structure layer and a lower part composed of n same petal-shaped structure layers connected in sequence, the petal-shaped structure layer comprises four arc segments; the lower part is formed by head-to-tail splicing in the weft direction to form an R angle and a bottom of the carbon fiber crucible preform, and the arc lines of two adjacent petal-shaped structure layers completely coincide at the junction. The application further provides a preparation method of the unit layer base cloth and a carbon fiber crucible preform prepared by using the unit layer base cloth. When the unit layer base cloth is used to prepare the carbon fiber crucible preform, the operation is simple, practical and safe, the phenomenon of ribbing at gaps and poor needling effect is greatly reduced, the hoop strength of the R bottom of the preform, the stability of the interlayer structure and the overall performance of the needling of the layers are ensured.

This invention relates to the field of rubber materials technology and discloses a green tire rubber material and its molding process. The green tire rubber material of this invention includes 70-90 parts of styrene-butadiene rubber, 10-30 parts of methyl vinyl silicone rubber, and 10-25 parts of stilbene-tetramethyldisiloxane-modified starch. The modified starch contains multiple benzene rings identical to those in styrene-butadiene rubber and siloxane structures identical to those in silicone rubber, which improves the compatibility between starch and styrene-butadiene rubber, as well as silicone rubber. Furthermore, during the vulcanization process, the alkenyl groups of the modified starch undergo vulcanization crosslinking reactions with the alkenyl groups of styrene-butadiene rubber and silicone rubber, further enhancing the bonding force between starch, styrene-butadiene rubber, and silicone rubber, giving starch a better reinforcing effect and significantly improving the tensile, tear, and other mechanical properties of the rubber material.

This invention relates to the field of silicone rubber technology and discloses a method for preparing highly transparent extruded precipitated silicone rubber. The invention involves adding silicone rubber compound and modified titanium dioxide to a Banbury mixer for mixing, then adding a vulcanizing agent, mixing again, and finally extruding the compound in an extruder to form a high-transparency extruded precipitated silicone rubber. The organosilicon modifier contains a large number of carboxyl groups, effectively achieving the coating modification and surface modification of titanium dioxide, which helps reduce titanium dioxide agglomeration, improves the compatibility between titanium dioxide and the polysiloxane molecular chains of silicone rubber, and ensures that it is uniformly dispersed in the silicone rubber matrix, providing better reinforcement. The tensile properties and tear strength are significantly improved, resulting in silicone rubber with high transparency and good mechanical properties.

The invention relates to the field of sealants, in particular to a high-transparency neutral silicone adhesive and a preparation method thereof. According to the high-transparency neutral silicone adhesive provided by the invention, the filler is modified, and the manner of coating the organic microspheres with the silicon dioxide is adopted, so that compared with the traditional white carbon black filler or filler with the silicon dioxide coated with an organic system, the high-transparency neutral silicone adhesive has the advantages that the size of the filler is larger; and better reinforcing performance, transparency and flowability are also provided.