1426 results about "Silicone rubber" patented technology

The invention relates to the technical field of foamed silicone rubber surface detection, and discloses a foamed silicone rubber surface detection method based on image visual identification, which comprises the following steps: acquiring a color image of a foamed silicone rubber surface, carrying out graying and normalization processing, and generating a diffuse reflection effective detection area by using a polarization filter difference technology; color abnormity is detected based on an image gridding and gray statistical method, meanwhile, pore and microbubble defects are detected in combination with minimum value seed point extraction and an eight-neighborhood region growing algorithm, finally, various masks are fused, the defect area and number are counted, and a quality inspection report is generated; the method can effectively inhibit highlight interference and accurately identify uneven colors and pore microbubbles, the detection process does not need external training, calculation is efficient, and the method is suitable for rapid detection and quality control of surface defects of foamed silicone rubber.

The invention discloses a preparation method of flame-retardant silicone rubber resistant to long-term thermal aging, and relates to the technical field of high-molecular compound composition anti-aging rubber. The flame-retardant silicone rubber is prepared from the following components in parts by mass: 75 to 100 parts of methyl vinyl silicone rubber raw rubber, 18 to 28 parts of fumed silica, 20 to 35 parts of aluminum oxide trihydrate, 0.5 to 3 parts of platinum flame-retardant synergist, 2 to 5 parts of heat-resistant additive, 1.5 to 2.5 parts of structured control agent, 1 to 2 parts of cross-linking agent, 2 to 10 parts of anti-aging agent and 8 to 13 parts of fluorinated silicone rubber. Through a synergistic flame-retardant system, the silicone rubber disclosed by the invention shows obvious advantages in flame-retardant capability, can reach a higher flame-retardant grade, effectively delays flame propagation, and reduces the risk of fire disasters. The weather resistance of the silicone rubber is remarkably improved due to the ultraviolet absorption function and the anti-oxidation function of the anti-aging agent, so that the silicone rubber can effectively resist ultraviolet rays and oxidation under the long-term outdoor solarization condition, and the performance reduction and the appearance deterioration are reduced.

The invention discloses a co-extrusion shielding medium-voltage power cable, and relates to the technical field of cables, the outer side of an inner reinforcing rope is provided with a supporting flame-retardant assembly, the outer side of the inner reinforcing rope is sleeved with a reinforcing spiral, the outer side of the reinforcing spiral is sleeved with a heat conduction pipe, a flame-retardant bag is installed between adjacent supporting rods, and one side of a heat conduction film is bonded with a flame-retardant silica adhesive tape. According to the invention, the reinforced connecting rods embedded in the reinforced through holes can extrude the supporting rods to deform, so that bending is resisted, and excessive bending deformation is prevented; heat generated in the use process of the cable can be dispersed to other positions of the cable, local overheating of the cable is prevented, influences on other inner conductors are reduced due to various reasons such as cooling, fire extinguishing and keeping away of the inner conductors, it is guaranteed that the cable can work normally for a longer time, and the other normal inner conductors are protected.

The invention discloses a flexible fireproof cable and a preparation method thereof, and belongs to the technical field of cables. The cable comprises a conductor, a mica insulation layer, a copper protection layer, a buffer layer and a cable sheath layer. The buffer layer is made of a polyurethane foaming material; the cable sheath layer is prepared from the following components in parts by weight: 80 to 100 parts of methyl vinyl silicone rubber, 18 to 20 parts of modified carbon black, 5 to 8 parts of titanium dioxide, 1 to 2 parts of platinum catalyst, 3 to 6 parts of hydroxyl silicone oil, 0.5 to 1 part of zinc stearate and 0.8 to 1 part of dicumyl peroxide. The modified carbon black is added into the raw materials of the sheath layer, so that the compatibility, the interface bonding force and the flame retardant property of the carbon black and a silicone rubber matrix are effectively improved, and the mechanical property, the wear resistance and the fireproof property of the cable sheath layer are remarkably enhanced.

The invention provides a self-repairing hydrated salt phase change microcapsule as well as a preparation method and application thereof, and belongs to the field of phase change materials. The preparation method comprises the following steps: preparing a hydrated salt phase change material and sorbitol into eutectic melt by adopting a melting method; strontium carbonate, sorbitol grafted nano titanium dioxide, SiO2-coated silicone rubber microspheres, hollow Al2O3 microspheres, tannic acid microcapsules, alpha-zirconium phosphate, melamine polyphosphate, diethyl aluminum hypophosphite, carboxylated multi-walled carbon nanotubes, polydopamine modified boron nitride nanosheets and hydrophilic fumed silica are added into the eutectic melt, and blending is performed to obtain a core material; The preparation method comprises the following steps: adding strontium carbonate, sorbitol grafted nano titanium dioxide, SiO2-coated silicone rubber microspheres, hollow Al2O3 microspheres, tannic acid microcapsules, alpha-zirconium phosphate, melamine polyphosphate, diethyl aluminum hypophosphite, carboxylated multi-walled carbon nanotubes, polydopamine modified boron nitride nanosheets and hydrophilic fumed silica into the eutectic melt; bio-based polyurethane-polyurea is used as a shell material, the core material is coated in the shell to prepare the microcapsule, and the temperature of the coating operation is not higher than the phase change temperature of the hydrated salt phase change material; the surface is coated with a super-hydrophobic coating. According to the invention, a solid filler system is constructed, and a low-temperature preparation process is combined, so that the phase-change microcapsule with high performance, high reliability and high safety is developed.

The invention relates to the technical field of measuring devices, in particular to a three-dimensional laser measuring device based on motor detection. Comprising a rack and a microcontroller, and further comprises a moving frame, an electric rotary table and two mold pouring boxes are installed on the moving frame, a to-be-tested motor is arranged on the electric rotary table, an electric heater and a refrigeration module are installed on each mold pouring box, a cavity is formed in each mold pouring box, a turnover frame driven by a turnover motor is installed on a multi-axis mechanical arm, and the turnover frame is provided with a motor. The overturning frame is provided with an overturning clamp for overturning a motor to be tested, the multi-axis mechanical arm is provided with a reflective liquid storage box and a release agent storage box, the reflective liquid storage box and the release agent storage box are both provided with pump bodies, the liquid outlet ends of the two pump bodies are both communicated with spray heads through corrugated connecting pipes, and the two spray heads are both installed on the overturning frame. The beneficial effects of the invention are that through triple data fusion, silicone rubber reverse mold cyclic regeneration and full-process automatic integration, high-precision measurement of the to-be-measured motor during three-dimensional scanning is realized.

The invention relates to the field of new energy battery buffer parts, in particular to an anti-static foaming silica gel buffer part for a new energy battery and a preparation method of the anti-static foaming silica gel buffer part. The anti-static foaming silica gel buffer part is prepared by mixing and foaming anti-static mixed rubber, a foaming agent, hydrogen-containing silicone oil, an inhibitor and a platinum catalyst, the anti-static rubber compound is prepared from the following raw materials in percentage by weight: 37-50% of methyl vinyl silicone rubber raw rubber, 38-45% of white carbon black, 8-15% of anti-static filler and 1-3% of hydroxyl silicone oil; the antistatic filler is composed of an antistatic agent and a silane-containing active agent; the antistatic agent is composed of acetylene carbon black and a single-walled carbon nanotube. Under the action of the silane-containing active agent, the acetylene carbon black and the single-walled carbon nanotubes are interwoven to form a stable supporting antistatic skeleton structure, so that static electricity can be effectively conducted, static electricity accumulation is avoided, the structure is kept stable in long-term use, and the compression resilience and antistatic durability of the buffer part are ensured.

The invention discloses two-component addition type low-density liquid foaming silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber preparation. Comprising a component A and a component B, the component A is prepared from the following components in parts by weight: 50 to 70 parts of vinyl terminated polysiloxane, 10 to 20 parts of vinyl hydroxyl silicone oil, 0.5 to 2 parts of platinum catalyst, 15 to 25 parts of HGM (at) PN-rGO / APP and 3 to 8 parts of methyl vinyl MQ resin; the component B is prepared from the following components in parts by weight: 50 to 60 parts of vinyl-terminated polysiloxane, 8 to 15 parts of hydrogen-terminated hydrogen-containing silicone oil, 10 to 20 parts of methyl-terminated hydrogen-containing silicone oil, 5 to 10 parts of hydroxyl-terminated silicone oil, 0.002 to 0.01 part of an inhibitor, 10 to 20 parts of fumed silica and 1 to 3 parts of a tackifier. The synergistic components in the HGM-coated PN-rGO / APP can greatly improve the flame retardant property of the silicone rubber, improve the compression strength and reduce the heat release rate at the same time.

The invention provides an anti-extrusion cable and a cable connection structure, and relates to the technical field of cables.The anti-extrusion cable comprises a cable body, the cable body comprises a middle sheath, a shielding layer, a plurality of guide cores, a filling layer and an inner insulating sheath, the guide cores are evenly arranged on the inner side of the middle sheath, and the shielding layer is arranged on the inner side of the middle sheath; the guide cores, the inner insulating sheaths and the shielding layers are arranged in a one-to-one correspondence manner, the inner insulating sheaths tightly wrap the outer sides of the guide cores, the shielding layers tightly wrap the outer sides of the inner insulating sheaths, and the filling layers are filled in gaps between the shielding layers and the middle sheath; a middle sheath of a cable main body is made of chloroprene rubber materials and provides stable support for an internal structure, a spiral spring steel wire fixedly sleeved on the outer side of the middle sheath can effectively disperse external extrusion acting force and improve the overall anti-extrusion performance of the cable, and a silicone rubber layer coated on the outer side of the steel wire is tightly attached to the steel wire and extends to the outer wall of the middle sheath to be in hot melting connection, so that the service life of the cable is prolonged. And extrusion impact can be buffered in an auxiliary manner.

The invention provides a damping liquid silicone rubber material which is obtained by curing a damping liquid silicone rubber raw material composition, and also provides damping liquid silicone rubber and a preparation method thereof. The hardness and strength of the liquid silicone rubber material are improved through filling of the MQ silicon resin and the high-white carbon black, meanwhile, a large number of interface areas are formed by the nano-particles and a matrix, microcosmic slippage of the interfaces is generated under the action of dynamic stress, mechanical energy is converted into heat energy through friction and viscous effects between the interfaces and molecular chains, and damping is improved; according to the invention, by introducing methyl-terminated vinyl silicone oil, a silicone rubber chain forms a large number of suspension chain structures, energy dissipation is enhanced, hydrogen-containing chain extension is carried out at a use end, a main polymer has a longer free molecular chain segment to generate a friction effect, and the damping performance of the liquid silicone rubber material is further improved. Experimental results show that the liquid silicone rubber provided by the invention has excellent damping, mechanical and other properties under high hardness.

The application discloses a multilayer fireproof material for a battery and a manufacturing method thereof, relates to the technical field of fireproof materials, and comprises a fireproof material base and a protective layer wrapped on the outer surface of the fireproof material base; the fireproof material base comprises a first glass fiber cloth layer, a ceramicized silicone rubber layer and a second glass fiber cloth layer from top to bottom; the multilayer fireproof material disclosed by the application has the advantages of remarkable fire-retardant and fireproof effects, good weather resistance and environmental protection performance, sufficient high-temperature flame impact resistance and good mechanical properties.

The invention relates to the technical field of foaming materials, and particularly discloses a silicone rubber foaming material and a preparation method thereof. The silicone rubber foaming material is prepared from the following raw materials in parts by weight: 1-60 parts of hydroxyl silicone oil, 10-60 parts of vinyl silicone oil, 1-15 parts of hydrogen-containing silicone oil, 1-5 parts of methyl silicone oil, 0.5-1 part of an inhibitor, 0.25-0.5 part of a platinum catalyst, 5-15 parts of modified polysiloxane and 10-30 parts of white carbon black. The invention also provides a preparation method of the composition. Compared with the prior art, the silicone rubber foaming material prepared by the invention does not contain halogen and other harmful substances, does not cause secondary pollution in a combustion process, and can realize efficient balance of mechanical properties and flame retardant properties.

The invention relates to the technical field of rubber materials, and provides a flame-retardant rubber hose and a preparation method thereof. The flame-retardant rubber hose comprises an inner rubber layer, a reinforcing layer and an outer rubber layer, and raw materials of the inner rubber layer and the outer rubber layer respectively and independently comprise the following components in parts by weight: 10-15 parts of MQ silicone rubber, 85-90 parts of nitrile rubber, 3-7 parts of 3-carboxyl-4-hydroxy-acetoacetanilide modified graphene, 35-45 parts of filler, 1-3 parts of an anti-aging agent, 5-10 parts of a plasticizer, 2-5 parts of an activating agent, 1-2 parts of a vulcanizing agent and 0.5-1.5 parts of an accelerant. According to the technical scheme, the problem that the rubber hose in the prior art is insufficient in mechanical property and flame retardant property is solved.

The invention provides a phase change enhanced ablation-resistant modified liquid silicone rubber material as well as a preparation method and application thereof, and belongs to the field of advanced materials. According to the invention, paraffin is adopted as a phase change filler, so that the ablation resistance and heat insulation performance of the expanded ceramic liquid silicone rubber material are remarkably improved, and the prepared silicone rubber composite material has the advantages of low density, low ablation surface temperature, strong carbon layer and high heat absorption capacity. The phase-change reinforced modified expanded ceramic flexible ablation-resistant material further improves the ablation resistance and high-temperature heat insulation performance of a liquid silicone rubber material, and has a good application prospect in the fields of aerospace thermal protection, building heat insulation and the like.

The invention discloses silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber, and the silicone rubber is prepared from the following raw materials: raw vinyl silicone rubber, zinc acrylate, a platinum catalyst, a hydrogen-containing silicone oil cross-linking agent and silicon carbide nanowires. According to the invention, a covalent network based on raw vinyl silicone rubber is constructed in the silicone rubber, and zinc acrylate and silicon carbide nanowires form an ionic network, so that the double-network structure not only can improve the technical problem of high probability of rubber overflow in the preparation process of the silicone rubber, but also can enable the silicone rubber to obtain better mechanical properties.

The invention discloses a silicone rubber material for a shower head and a preparation method of the silicone rubber material, and belongs to the technical field of rubber. The silicone rubber material is composed of a component A and a component B, wherein the component A comprises vinyl silicone oil, a reinforcing agent, vinyl tri (2-methoxyethoxy) silane, a stain-resistant antibacterial filler and a catalyst, and the component B comprises vinyl silicone oil, a cross-linking agent and an inhibitor. The silicone rubber material prepared by the invention has good antibacterial performance and stain resistance, a shower head product produced from the silicone rubber material is good in durability, and the service life of the shower head product is remarkably prolonged.

The invention provides a high-hardness easy-to-cut silicone rubber material as well as a preparation method and application thereof. The high-hardness easy-to-cut silicone rubber material comprises the following components in parts by weight: 100 parts of methyl vinyl silicone rubber, 25-40 parts of fumed silica, 1.5-3 parts of hydroxyl silicone oil, 0.8-1.2 parts of a cross-linking agent, 0.05-0.1 part of a platinum catalyst and 1-2 parts of a heat-resistant stabilizer. Through screening and synergistic compounding of specific components in the silicone rubber material, synergistic optimization of shore hardness and elongation at break of the silicone rubber material is realized, and the silicone rubber material is ensured to be free of cracks after being aged at 180 DEG C for 3000 hours and still has an excellent elongation at break retention rate after being aged.

The invention relates to the technical field of protective film preparation, and particularly discloses an antistatic silica gel protective film and a preparation method thereof.The protective film comprises a base material layer and an antistatic coating coated on the surface of the base material layer; the base material layer is prepared from methyl vinyl silicone rubber, modified fumed silica, a compound antistatic agent A and a vulcanizing agent, and the antistatic coating is prepared from a compound antistatic agent B and water-based acrylic resin. The preparation method comprises the following steps: banburying, calendering and vulcanizing a compound antistatic agent A, methyl vinyl silicone rubber and modified fumed silica to form the base material layer; and finally, mixing the compound antistatic agent B with water-based acrylic resin to prepare an antistatic coating solution, coating the surface of the base material layer with the antistatic coating solution, and drying and curing to obtain a finished product. The silica gel protective film prepared by the invention has excellent antistatic property, mechanical property, adhesive force and high light transmittance, and is suitable for the fields of electronic equipment screens, optical lenses and the like.

A tamper for making paraffin blocks for histology may include a pliable tamper head and a handle. The handle may be permanently or removably attached to the tamper by using screws, magnets, or the like. The tamper may be made from a pliable material, such as a silicone rubber, with improved thermal transfer and high latent heat. In use, the tamper may be warmed in advance to a working temperature by placing the tamper on a hot plate of the embedding station or on a dedicated smaller hot plate. Alternatively, the tamper may be heated with an electric resistive element, a thermoelectric device, or an electric induction coil.

The invention belongs to the technical field of engineering materials, and particularly discloses an anti-impact sheath for a carbon fiber composite cable. The sheath comprises an outer protective layer and an inner protective layer; the inner protective layer has a porous structure; the inner protective layer is made of at least one of polyurethane resin, silicone rubber, polylactic resin, fiber reinforced polyurethane resin and fiber reinforced silicone rubber; the porous structure has at least one pore structure selected from a regular pore structure, a disordered pore structure, a bionic pore structure and a gradient pore structure. The sheath has the advantages of being large in compression deformation, high in energy absorption capacity, good in impact resistance and protection effect, light in weight, high in designability and the like, when the sheath is applied to the carbon fiber composite cable, the transverse impact resistance of the carbon fiber composite cable can be remarkably improved, and the service life of the carbon fiber composite cable is prolonged. And the dead weight of the carbon fiber composite cable is reduced, and the bearing efficiency of the cable is improved.

A thermal runaway fireproof composite material. The thermal runaway fireproof composite material comprises a ceramic silicone rubber layer and a glass fiber cloth layer. The porosity of the composite material is less than or equal to 0.5 and greater than 0 after ablation at 800°C for 30 min, and the crosslinking degree of the ceramic silicone rubber layer is 2×10-4 to 2×10-2 mol / cm3. The thermal runaway fireproof composite material has good flexibility before burning by a high-temperature flame, and can be fully attached to a battery cell; in addition, a hard and compact ceramic layer can be formed after burning by the high-temperature flame, so that the thermal runaway fireproof composite material has good fireproofing performance.

The invention relates to a heat-resistant cable accessory silicone rubber compound and a preparation method thereof. The heat-resistant cable accessory silicone rubber compound comprises the following components in parts by weight: 100 parts of raw silicone rubber, 30-80 parts of white carbon black, 1-10 parts of polyvinyl silicone oil, 2-13 parts of transition metal oxide, 0.05-0.8 part of phenyl silicone oil, 5-18 parts of an anti-structuring agent, 0.5-3 parts of hydrogen-containing silicone oil and 0.1-0.3 part of an internal release agent. Based on the synergistic regulation and control mechanism of the polyvinyl silicone oil to the phenyl silicone oil and the transition metal oxide, the obtained silicone rubber can still maintain good mechanical properties under the long-term high-temperature working condition, and has good high-temperature aging resistance. By adopting a step-by-step processing technology, the dispersion performance of the transition metal oxide in the silicone rubber is improved, so that the transition metal oxide can be more easily and uniformly mixed with the silicone rubber, and the problem of performance reduction caused by non-uniform dispersion is avoided.

The application relates to the field of chemical-proof fabrics, and particularly discloses a flame-retardant chemical-proof fabric and a preparation process thereof. The flame-retardant chemical-proof fabric comprises, from outside to inside, an outer layer, a bonding layer, a framework layer, a bonding layer and an inner layer which are sequentially contacted, the outer layer is a barrier layer, the inner layer is a barrier layer or an adsorption layer, the framework layer is selected from at least one of a composite fabric of aramid fiber / polyimide fiber, a basalt fiber cloth, a glass fiber cloth, a flame-retardant polyester cloth and a flame-retardant acrylic fiber cloth, the barrier layer is selected from at least one of a PVC / TPU composite film, a PVC film, a PTFE film, a PE film, silicone rubber, fluororubber, butyl rubber, chloroprene rubber and natural rubber, and the adsorption layer comprises a mixed fabric layer formed by nylon fiber and polyester fiber containing an adsorption material. The flame-retardant protective fabric has the advantages of high flame-retardant capacity, good chemical-proof effect, excellent puncture resistance and tensile resistance, can absorb moisture and sweat, and is comfortable to wear.

The invention discloses a silicone rubber composite material, a silicone rubber-based high-voltage-resistant high-damping composite phase-to-phase spacer and a preparation method thereof, and belongs to the technical field of power transmission line galloping prevention. The composite phase-to-phase spacer is composed of a high-damping silicone rubber composite material and a structural component. The silicone rubber composite material comprises 100 parts of methyl vinyl silicone rubber, 20-40 parts of phenyl silicone rubber, 30-60 parts of fumed silica, 15-40 parts of organosilicon elastomer micro powder, 20-50 parts of modified sericite, 5-15 parts of carbon nanotubes, 10-30 parts of high rubber powder, 10-30 parts of calcined kaolin, 2-4 parts of diphenyl silanediol, 3-8 parts of phenyl silicone oil and 1.5-3 parts of a peroxide vulcanizing agent. The spacer has high damping performance (tan [delta] gt; 0.45, effective damping temperature range gt; -120 DEG C), high pressure (gt; 35 kV / mm) and strong anti-galloping capability, and the galloping phenomenon of the power transmission line under the action of deicing and wind load can be effectively inhibited.

A silicone rubber insulator shed material, and a silicone rubber insulator and a preparation method therefor and an application thereof. The components of the silicone rubber insulator shed material comprise silicone rubber, iron oxide, nano-montmorillonite, fumed silica, aluminum hydroxide, a silane coupling agent, a vulcanizing agent, and hydroxy silicone oil, wherein the iron oxide and the nano-montmorillonite can slow down the thermal oxidation decomposition of the silicone rubber, thus improving the hydrophobicity, hydrophobic mobility and hydrophobic recovery of the silicone rubber composite insulator, thereby solving the technical problem in the prior art that the aging decomposition resistance of silicone rubber needs to be improved.

The invention relates to the technical field of silicone rubber, in particular to high-temperature-resistant flame-retardant silicone rubber, a preparation method thereof and a cable, the high-temperature-resistant flame-retardant silicone rubber comprises a gradient layer material composed of a surface layer material, a transition layer material and a core layer material, and the surface layer material comprises methyl vinyl silicone rubber, superfine furnace black, calcium stannate, polyacrylonitrile aerogel and a flame-retardant premix; the transition layer material comprises methyl vinyl silicone rubber, superfine furnace carbon black, spandex fibers, polyarylester, calcium stannate and a flame-retardant premix; the core layer material is prepared from methyl vinyl silicone rubber, superfine furnace black, aramid fiber, polyarylester, phthalonitrile resin and 2-mercaptobenzothiazole zinc salt; wherein the flame-retardant premix is prepared from hydroquinone bis (diphenyl) phosphate, phenyl ethyl aluminum phosphinate and zinc hypophosphite according to the weight ratio of (6 to 10): (2 to 4): (1 to 3); the problems that an existing material is prone to aging in an extreme environment, the flame retardant effect is poor, and the mechanical property is degraded are effectively solved.

The invention discloses flame-retardant tracking-resistant silicone rubber as well as a preparation method and application thereof. The flame-retardant tracking-resistant silicone rubber comprises the following components in parts by mass: 100 parts of methyl vinyl silicone rubber; 30 parts to 45 parts of fumed silica; 4 to 8 parts of hydroxyl silicone oil; 0.4 part to 0.8 part of hydrogen-containing silicone oil; 1-3 parts of a vulcanizing agent; 2 to 5 parts of a layered nano material modified by a nitrogen-containing organic silicon boron compound; and 10 ppm to 20 ppm of an organic platinum catalyst. The flame-retardant tracking-resistant silicone rubber disclosed by the invention has the advantages of excellent flame retardance, tracking resistance, mechanical property, processability, thermal stability and the like, has a wide application prospect in the fields of extra-high voltage power transmission and transformation, special equipment, new energy automobiles and the like, and is simple in preparation method, easily available in raw materials, low in cost and suitable for industrial production. The method is suitable for large-scale industrial production and application.

The invention relates to the technical field of high polymer materials, and provides fireproof flame-retardant ceramic silicone rubber and a preparation method thereof. The fireproof flame-retardant ceramic silicone rubber is prepared from, by mass, 100 parts of silicone rubber, 5-20 parts of fumed silica, 10-65 parts of a modified flame retardant, 20-50 parts of ceramic powder, 5-20 parts of a fluxing agent, 0.5-2 parts of a vulcanizing agent and 1-7 parts of a coupling agent, and the modified flame retardant is prepared from butyl acrylate-sodium p-styrenesulfonate-vinyltriethoxysilane copolymer and an inorganic flame retardant. According to the technical scheme, the problems that in the prior art, the compatibility of the inorganic flame retardant and the silicone rubber is poor, and consequently the flame retardant effect and the mechanical property of the ceramic silicone rubber are poor are solved.

The invention relates to the technical field of rubber material preparation, and discloses a flame-retardant environment-friendly rubber material and a preparation method thereof. The preparation method comprises the following steps: carrying out ball milling on phosphamide bis-hexafluorophosphate ionic liquid and a carbon nanotube to obtain an ionic liquid modified carbon nanotube; and mixing with silicone rubber, a vulcanizing agent and the like, and vulcanizing to obtain the flame-retardant environment-friendly rubber material. The phosphamide bis-hexafluorophosphate ionic liquid contains a plurality of hexafluorophosphate ionic groups, and has a large interaction force with the carbon nanotubes, so the surface modification of the carbon nanotubes is effectively realized, the dispersibility of the carbon nanotubes in a silicone rubber matrix is improved, and the tensile property, hardness and other mechanical properties of the silicone rubber are improved. The ionic liquid contains phosphamide and imidazole groups to form a nitrogen-phosphorus flame retardant, and the nitrogen-phosphorus flame retardant and the carbon nanotubes play a synergistic flame-retardant role, so that the flame-retardant property of the rubber is remarkably improved.

The present disclosure provides an interference mitigation cartridge for cardiac vibrational waves. The reduction box comprises an upper end face, side faces, a bottom face and a box body inner cavity defined by the upper end face, the side faces and the bottom face. The impedance wave-absorbing layer on the upper end surface comprises a carbon fiber epoxy layer, a silica gel carbon powder layer and a porous silicone rubber layer of which the impedance values are gradually reduced from large to small, and a through hole is formed in the center of the impedance wave-absorbing layer; the through hole penetrates through the upper lining layer to form an upper inner layer facing the inner cavity of the box body; the damping resonant cavity is formed after a gap between the lower surface of the porous silicon rubber layer and the upper surface of the upper lining layer is sealed at the side edge; the input vibration acquisition plate is embedded into a groove which is sunken downwards from the upper surface of the impedance wave-absorbing layer and is used for receiving and conducting input vibration containing heart vibration waves and environmental interference waves; and the vibration wave sensor is connected with the lower surface of the input vibration acquisition plate through a magnetic connecting piece, is arranged in the inner cavity of the box body and is used for receiving heart vibration waves.