115 results about "Silicone foam" patented technology

The invention discloses a high-flame-retardant organic silicon foam sheet and a preparation method thereof, and belongs to the technical field of organic silicon. The foam sheet is prepared from polydimethylsiloxane, methyltriethoxysilane, nano-modified zinc borate, an intumescent flame retardant, pretreated graphene oxide, polyethylene glycol, azodiisobutyronitrile and a catalyst. The preparation method comprises the following steps: mixing polydimethylsiloxane with methyltriethoxysilane, sequentially adding a modified flame retardant system, pretreated graphene oxide and an auxiliary agent, heating and uniformly stirring, and then adding a foaming agent and a catalyst; according to the modified flame retardant system, a glass layer and an expanded carbon layer are formed through the synergistic effect of nano-modified zinc borate and an intumescent flame retardant, and the flame retardance and dispersity are enhanced through pretreated graphene oxide. The tensile strength of the product reaches 0.52-0.71 MPa, the compression strength reaches 0.60-0.65 MPa, the oxygen index is 38-40, the vertical combustion reaches V-0, the foam expansion is 15-17, and the product has efficient flame retardance, excellent mechanical properties and light weight.

The invention belongs to the field of silica gel foam, and particularly relates to liquid silica gel foam with lasting and rapid rebound resilience after hot pressing. According to the liquid silica gel foam with lasting and rapid resilience after hot pressing, vinyl silicone oil with different viscosities is compounded, a proper amount of polyvinylsilicone oil is added, and the proportion of the vinyl silicone oil, the mixed hydroxyl silicone oil and the mixed hydrogen-containing silicone oil is regulated and controlled, so that the elasticity of the foam is improved; the liquid silica gel foam which is excellent in buffering performance and capable of rapidly rebounding and has no obvious damage on the surface after being subjected to hot pressing for multiple times at high temperature and high pressure is prepared according to the adding amount of the functional filler and the proportion of the fillers. When the liquid silica gel foam is used as a circuit board buffer material, scratches caused by hard contact between a heating plate and a laminated plate can be effectively avoided, and the service life of the heating plate and the service life of the laminated plate are prolonged.

The invention relates to the technical field of silica gel materials, and discloses heat-conducting flame-retardant silica gel foam, a preparation method of the heat-conducting flame-retardant silica gel foam and application of the heat-conducting flame-retardant silica gel foam in automobile sealing parts. The silicone rubber comprises the following components in parts by weight: 30-36 parts of alpha, omega-dihydroxy polydimethylsiloxane, 30-36 parts of vinyl silicone oil, 25-60 parts of a siloxane DOPO flame retardant, 50-72 parts of hydrogen-containing silicone oil and the like. The siloxane DOPO flame retardant improves the flame retardance of the silica gel foam, contains a large number of siloxane structures at the tail end and has good compatibility with silicone oil and other components in the silica gel foam, meanwhile, the flame retardant has hyperbranched dendritic molecular chains and forms physical crosslinking with silicone oil and other polysiloxane components, the crosslinking density of the silica gel foam is improved, and the flame retardance of the silica gel foam is improved. Good tensile strength and elongation at break are shown.

Disclosed herein are new types of foam insulation, and in particular, foam insulation for the exterior surfaces of residential, industrial, institutional or commercial buildings made using new silicone spray foam systems. These inventions relate to isocyanate-free foams used for thermal insulation, flame-retardancy and water resistance. The foams are prepared from silicone polymers with non-fluorinated blowing agents and can be used in the construction industry.

A curable composition for preparing a compressible silicone foam comprises: an alkenyl group-containing component comprising an alkenyl double-terminated polyorganosiloxane, an alkenyl substituted MQ polyorganosiloxane, and an alkenyl substituted copolymerized organosiloxane; and a hydrogen radical-containing component, wherein the hydrogen radical-containing component comprises a hydrogen radical-substituted polyorganosiloxane. The curable composition includes a curing catalyst; a filler composition; and a blowing agent. A compressible foam made from the curable composition and a method of making a compressible foam from the curable composition are also disclosed.

The invention discloses an anti-yellowing automotive interior composite material and a preparation method thereof, belongs to the technical field of composite material preparation, and aims to solve the technical problem that the anti-yellowing performance and flame retardant performance of an automotive interior material in the prior art need to be further improved. The material specifically comprises the following components in parts by weight: 50-60 parts of modified polystyrene, 20-30 parts of elastic silicon foam and 16-25 parts of auxiliary materials, according to the invention, fluorine group-inlaid and double-bond-terminated long-chain polysiloxane is constructed, the long-chain polysiloxane can participate in a free radical addition reaction so as to obtain modified polystyrene, on the other hand, modified polysiloxane is obtained through phosphorus-hydrogen addition and in-situ generation, and further, the modified polysiloxane and tetramethyl orthosilicate are subjected to a demethanation reaction so as to obtain the modified polystyrene. And melting and extruding the modified polystyrene, the elastic silicon foam and auxiliary materials into a mold to obtain the composite material.

The present disclosure relates to a silicone foam adhesive composition comprising (a) at least one polyorganosiloxane containing at least 2 silicon-bonded alkenyl groups per molecule, (b) at least one polyorganosiloxane containing at least 2 silicon-bonded hydrogen atoms per molecule, (c) a porogen capable of generating hydrogen gas in the presence of (b), comprising (c1) a polyorganosiloxane containing at least 1 silicon-bonded hydroxyl group per molecule, and (c2) water, and (d) a hydrosilylation catalyst; provided that the molar ratio of the hydroxyl groups in component (c2) to the hydroxyl groups in component (c1) is in the range of 1:5 to 20:1. The composition has a lower viscosity, a longer working time, and the cured foam has a lower density, fine and uniform cells.

The present invention provides a laminate with excellent heat insulation and cushioning properties, and an energy storage device equipped with the laminate. [Solution] The laminate of the present disclosure comprises a silicone foam layer and a thermal insulation layer laminated on the silicone foam layer, wherein the thermal insulation layer is an inorganic porous material.

This invention discloses a waterproof high-voltage distribution box with rapid maintenance capability, relating to the field of high-voltage power distribution equipment. This invention solves the problems of poor space adaptability, inconvenient maintenance, and insufficient protection level of existing high-voltage distribution boxes. The box has a top window and a rear maintenance window, with recessed bosses at the windows. The cover plate has bent edges, and a silicone foam sealing gasket is placed between the two, secured with combination screws. The interior of the box is divided into upper and lower layers by a middle mounting plate, with positive and negative components mounted on the middle and bottom mounting plates respectively. Vulnerable fuses are concentrated at the maintenance windows, and a vent valve is installed on the outer wall of the box. This distribution box is suitable for compact spaces, has good waterproof sealing, and allows for rapid replacement of vulnerable parts, improving electrical safety and making it suitable for power distribution scenarios of new energy equipment.

An electric motor assembly including a stator carrier, a stator supported by the stator carrier, at least one gap defined by between respective surface of the stator and the stator carrier, and at least one foam member interposed between the respective surfaces of the stator and the stator carrier in gap to reduce vibration.

The present disclosure relates to a silicone-based fire protection material having a foam structure in which a hollow filler having a d50 of 10 [mu] m to 200 [mu] m is incorporated in a silicone-based polymer foam comprising bubbles wherein the silicone-based fire protection material has a density of 0.1 g / cc to 0.8 g / cc and a Shore A hardness of 1 to 40, and the silicone-based polymer foam has a bubble size d50 of 10 [mu] m to 1000 [mu] m.

This invention discloses a heat-resistant and flame-retardant multifunctional power cable and its manufacturing method. The power cable includes a cable core and a cable sheath wrapping the cable core, with ceramicized silicone foam filling the space between the cable core and the cable sheath. The cable sheath includes an insulating substrate layer, a flame-retardant heat dissipation layer disposed on its inner side, and a wear-resistant reinforcement layer disposed on its outer side. The inner and outer surfaces of the insulating substrate layer are respectively provided with multiple first connecting blocks and multiple second connecting blocks. Correspondingly, the inner surfaces of the flame-retardant heat dissipation layer and the wear-resistant reinforcement layer are respectively provided with first connecting slots and second connecting slots that fit into them. The multiple first connecting blocks and multiple second connecting blocks are staggered circumferentially along the insulating substrate layer. Compared with the prior art, the power cable provided by this invention, through innovative structural and material design, synergistically achieves multiple functions such as heat resistance and flame retardancy, high strength, wear resistance, bending resistance, and long lifespan.

The present invention relates to a composition for producing silicone foam, a foam sheet comprising the silicone foam produced therefrom, and a secondary battery module comprising the foam sheet, the composition comprising: 100 weight parts of a silicone mixture comprising at least one organopolysiloxane; 0.0001-0.05 weight parts of a platinum catalyst; 50-70 weight parts of a flame retardant; and greater than 0 and less than 1 weight parts of hollow glass.

This invention discloses a silicone foam sheet and a battery module and battery pack containing the same, belonging to the technical field of silicone foam materials. The linear expansion coefficient α of the foam sheet's pore diameter satisfies 1≤α≤8, and the linear contraction coefficient β of the foam sheet's pore wall thickness satisfies 4≤β≤9. This invention enables the silicone foam sheet to have more spatial gaps and a lower thermal conductivity under room temperature conditions; it also enables the silicone foam sheet to maintain an intact pore structure and high strength after sintering at high temperatures, thus preventing breakage. Therefore, the silicone foam sheet of this invention has good thermal insulation performance; simultaneously, the silicone foam sheet of this invention also exhibits good cushioning performance.

The invention provides an organic silicon foam additive as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The organic silicon foam auxiliary agent has a structure as shown in a formula I. In the organic silicon foam auxiliary agent, R is selected from C3-C6 alkyl and C2-C6 alkyleneoxy ethylidene; r1 is selected from methyl or ethyl; n > = 0, x + y > = 1, and hydroxyl content > = 1%. The molecular structure of the silicon foaming agent is designed, and an epoxy ether chain segment, an alcohol ether chain segment and an alkoxy side group are introduced to a side chain of a silicon-oxygen chain segment and act together, so that the double effects of a foaming agent and an adhesion promoter can be achieved at the same time; the obtained foamed silicone rubber has the advantages of low specific gravity, uniform foam holes, good adhesive force, excellent dielectric property and the like. Formula I.

The utility model discloses a device of tearing off release paper on silica gel foam, contain: frame body, receive material module, a pair of clamping module, peeling module and blowing module, wherein, receive material module sets up on frame body for fixed foam, a pair of clamping module and receive material module adjacent arrangement are used for clamping the release paper on foam, peeling module and receive material module adjacent arrangement are used for peeling the release paper foam, blowing module and clamping module adjacent arrangement are used for blowing to the gap between release paper and foam. The utility model greatly improved the release paper tearing efficiency, long time uninterrupted work, avoided the risk of manual operation.

The utility model discloses a cleaning device for silica gel foam processing, which comprises a U-shaped fixing frame, the bottom of the U-shaped fixing frame is fixedly connected with a bottom supporting seat, one side of the U-shaped fixing frame is fixedly connected with a turnover mechanism, two sides of the inside of the U-shaped fixing frame are fixedly connected with a conveying frame, two sides of the conveying frame are fixedly connected with partition plates, and the partition plates are fixedly connected with a bottom supporting seat. According to the silica gel foam washing device, the angle and the position can be adjusted, the washing spray guns can be flexibly moved to wash silica gel foam, and the silica gel foam can be washed according to the actual stain condition, so that the silica gel foam can be washed conveniently. According to the device, cleaning is conducted in a targeted mode, unnecessary excessive cleaning is avoided, damage to the surface of silica gel foam and waste of cleaning liquid are reduced, key dirty areas are washed repeatedly, meanwhile, the device can be rapidly adjusted to a proper position for cleaning according to the size and shape of the foam, and the universality and practicability of the device are improved.

The utility model discloses a silica gel foaming mould, including upper mould and lower mould, the upper mould includes upper base, terrace die, limit block and guard bar, terrace die is fixed on the upper surface of said upper base, the upper surface of terrace die is provided with evenly arranged round nail, the lower mould includes lower base, concave die, limit groove and guard bar, the lower base is provided with the lower base, concave die, limit groove and guard bar. The female die is fixedly arranged on the upper surface of the lower base, round nails which are symmetrical and matched with the round nails on the male die are arranged on the upper surface of the female die, and the length of the round nails is adjusted according to the cloth or the gauze cloth in the middle or in the offset position of the foaming silica gel die cup; when in use, the sticking cloth is fixed on the female die by a clamp, the sticking cloth is fixed by the round nails, the upper die and the lower die are aligned for compression after the sticking cloth is coated with the foaming silica gel, compression molding of the silica gel die cup can be completed, the effect of producing four pairs of die cups by one die can be realized, and the production efficiency is improved.

The utility model relates to the field of bra cup design, in particular to a semi-invisible decorative three-dimensional printed cup which comprises a transparent fabric layer, a cotton layer and an inner fabric layer which are sequentially arranged from the outer surface to the inner surface, and the transparent fabric layer comprises a breathable layer, a high-elasticity filling layer and a connecting layer. The pattern layer is located between the connecting layer and the cotton layer and is of a protruding texture structure, the high-elasticity filling layer is made of silica gel foam materials and is of a hollowed-out structure, meanwhile, the multi-layer structural design is optimized in the cotton layer, and transfer of the three-dimensional pattern layer is achieved in a heat transfer printing mode. The purpose of giving consideration to comfort and functionality while improving the decoration effect of the cup body is achieved, and the visual experience of semi-invisible decoration and the good touch sense and durability are achieved.

This document describes a two-part composition that can be used to produce silicone foam and components made therefrom. The two-part composition comprises: (A) a first part comprising: a first vinyl-substituted polysiloxane; a polymerization catalyst; a blowing agent; a first plurality of hydrophobic pyrolytic silica; a plurality of expandable graphite; and a first plurality of inorganic particles having an average diameter of 15 nm to 50 μm, wherein the plurality of inorganic particles are not pyrolytic silica or expandable graphite; and (B) a second part comprising: a second vinyl-substituted polysiloxane; a hydrogenated silyl-substituted polysiloxane; a second plurality of hydrophobic pyrolytic silica; and a second plurality of inorganic particles having an average diameter of 15 nm to 50 μm, wherein the plurality of inorganic particles are not pyrolytic silica or expandable graphite, wherein at least one of the first and second parts comprises a polymerization inhibitor.

A flexible multilayer battery pack insulator for an electric vehicle has a multilayer wall comprising: a first layer of interwoven mineral material, the first layer having a first inner surface and a first outer surface; a first flame retardant coating bonded to the first outer surface; a second layer of interwoven mineral material, the second layer having a second inner surface and a second outer surface; a second flame retardant coating bonded to the second outer surface; and a silicone foam intermediate layer sandwiched between the first inner surface of the first layer and the second inner surface of the second layer.

The present invention relates to new implants, especially breast implants, which are bio-durable, biocompatible, which provide a soft tissue feel, and having a reduced density. Said implants comprise a shell and a filling enclosed by the shell, wherein the filling comprises a silicone foam obtained from a blowable crosslinkable silicone composition comprising an organopolysiloxane having at least two alkenyl groups bonded to silicon per molecule, an organosilicon compound having at least two and preferably at least three hydrogen atoms bonded to silicon per molecule, a hydrosilylation catalyst, at least one porogenic agent which is water, hydrogel, or an aqueous silicone emulsion, at least one chemical blowing agent, and a linear polydimethylsiloxane.

A curable composition for making a low density cast silicone foam includes a first portion and a second portion. The first part comprises a specific amount of an alkenyl-terminated polyorganosiloxane; an alkenyl substituted copolymerized organosiloxane; an alkenyl substituted MQ polyorganosiloxane; curing the catalyst; an inorganic filler; and a chemical blowing agent. The second portion comprises a hydride substituted polyorganosiloxane. The resulting silicone foam advantageously has a density of less than 240 kg / m3; and a closed cell content of at least 50%. Also described are cured silicone foams and methods of making the same.

The invention relates to the technical field of silica gel foam production, and discloses a forming device for liquid silica gel foam production and processing, which comprises a forming machine main body and a processing frame arranged at a discharge port of the forming machine main body, and the processing frame is sequentially and rotationally connected with a first guide roller and a first winding roller in the silica gel foam conveying direction; the processing frame is provided with two sets of stripping assemblies located at the upper end and the lower end of the first guide roller correspondingly, and each stripping assembly comprises a stripping roller, a second guide roller and a second winding roller which are sequentially and rotationally connected to the processing frame in the release film conveying direction; the upper-layer stripping assembly is used for stripping an upper-layer release film of the silica gel foam, and the lower-layer stripping assembly is used for stripping a lower-layer release film of the silica gel foam. The device has the following advantages and effects that the release film and the silica gel foam can be automatically separated at a constant speed, compared with manual stripping, the device is more stable and higher in efficiency, and the physical integrity of a foam product and the release film can be better protected.

The utility model discloses a kind of screening devices for liquid silicone foam preparation, including filter tank, the inside of the filter tank is equipped with filter screening layer and anti-blocking brushing assembly, the side of the top of the filter tank is equipped with sealed hopper.The utility model, filter screening layer can carry out screening separation to impurity in liquid silicone, operating drive motor can drive and drive anti-blocking brushing assembly rotation, the residual adhering matter on the upper and lower sides of filter screening layer is cleaned and scraped, simultaneously drive inner wall cleaning assembly, the upper and lower inner walls in the inside of filter tank are all rotated cleaning and scraping material effect, convenient to use, pressurizing air blowing component pressurizes the inside of filter tank, the filtering speed of liquid silicone is accelerated, the filtering screening speed is increased, make device filter plate anti-blocking cleaning and tank self-cleaning effect is good, filtering quality is high, and pressurized filtration mode increases filtering speed, and filtering discharging efficiency is excellent.

The application belongs to the technical field of adhesives, and relates to a kind of organic silicon foaming glue and its preparation method.The organic silicon foaming glue includes component A and component B, the component A includes the following raw materials: vinyl silicone oil, hydroxyl silicone oil, fumed silica, platinum catalyst;The component B includes the following raw materials: vinyl silicone oil, hydrogen-containing silicone oil, fumed silica, flame-retardant microcapsule, inhibitor;Wherein, the core material of the flame-retardant microcapsule is graphene, and the shell material from inside to outside is modified acrylic resin and melamine formaldehyde resin in turn.The organic silicon foaming glue provided in the application solves the problem of high filling amount of existing foaming glue flame retardant and easy leakage of flame retardant in the prior art, and the limiting oxygen index (LOI) of the prepared foaming glue is improved to more than 32%, the vertical burning grade reaches UL94V-0 level, and no melt dripping occurs;The foaming glue remains stable in performance in the range of-60℃~200℃, and after high-low temperature cycle-40℃ / 2h→150℃ / 2h, cycle 10 times, the compression permanent deformation rate is less than or equal to 15%.

The application discloses a phenolic modified silicone foam material based on an epoxy-based hyperbranched silicone resin and a preparation method thereof. The silicone foam material comprises the following raw materials in parts by weight: 40-100 parts of hyperbranched silicone resin, 20-50 parts of polyether polyol, 80-100 parts of polyisocyanate, 1-60 parts of liquid phenolic resin, 2-5 parts of foaming agent, 1-15 parts of bubble uniformizing agent, 0.5-5 parts of catalyst and 1-50 parts of reinforcing filler. The preparation method comprises the following steps: dispersing the hyperbranched silicone resin, the catalyst and the foaming agent, and then removing the bubbles in vacuum; dispersing the polyisocyanate and the bubble uniformizing agent, and then removing the bubbles in vacuum; dispersing the polyether polyol, the liquid phenolic resin and the reinforcing filler, and then removing the bubbles in vacuum; pouring or spraying the mixture after rapid stirring and uniform mixing, and then curing. The material obtained by the application can be sprayed and constructed, has high adhesion, excellent mechanical properties, flame retardation, temperature resistance, aging resistance and good ablation resistance.

The invention belongs to the technical field of medical instruments, and relates to a preparation method of a lumbar compression fracture prone hyperextension reduction operation backing plate, which comprises the following steps: collecting thoracolumbar imaging data (X-ray film and CT image) of a patient; a lumbar vertebra three-dimensional model is generated through three-dimensional reconstruction software; analyzing an anatomical relationship of the fractured vertebral body; performing 3D hyperextension position reset simulation by utilizing Surgmap software, calculating a hyperextension angle (beta-alpha), and generating a three-dimensional digital model of the chest pad and the iliac pad; a 3D printing technology is adopted to manufacture the operation backing plate, and the surface is covered with foam or a silica gel cushion. According to the method, the parameters of the backing plate are precisely designed based on patient personalized data, the lumbar vertebra is stabilized at the hyperextension position, the reduction effect is remarkably improved, and the operation difficulty and complications are reduced. The device is suitable for PVP, PKP and other operations, low in manufacturing cost, easy to popularize and capable of improving prognosis of patients.

The present disclosure relates generally to the field of cushioning articles, and more particularly to the field of articles with pressure management and thermal insulation properties. In some embodiments, the article is a compressible thermally insulating foam for buffering between cells, the compressible thermally insulating foam including a silicone foam having a thermally insulating filler. The present disclosure also relates to methods of making such articles and their use in industrial applications for pressure and thermal management applications.

Chemically blown silicone foam-gels are described which can be cured from a two-component formulation and used in various applications such as implantable medical devices (e.g., breast implants).