521 results about "Silicone sealant" patented technology

The invention relates to a mildew-proof silicone sealant with high curing rate and high adhesive strength, and belongs to the technical field of adhesives. The anti-mildew coating is prepared from alpha, omega-dihydroxy polydimethylsiloxane, dimethyl silicone oil, fumed silica, phenoxy resin coated nano calcium carbonate, a modified hydroxypropyl-gamma-cyclodextrin loaded mildew preventive, dibutyltin dilaurate, methyltrimethoxysilane and a curing accelerator. According to the mildew-proof silicone sealant with the high curing rate and the high adhesive strength, the surface drying time is 9-13 minutes, the 24-hour curing depth is 6.3-7.2 mm, the adhesive strength is 3.0-3.6 MPa, the tensile strength is 5.8-6.4 MPa, the shear strength is 3.0-3.9 MPa, the elongation at break is 410-457%, and the mildew-proof grade is 0 grade in 30 days, 60 days, 180 days and 360 days.

The invention discloses a modified fluorosilicone polymer, a two-component silicone sealant and a preparation method of the two-component silicone sealant. The structural formula of the modified fluorosilicone polymer is shown in the specification. The preparation raw materials of the two-component silicone sealant contain the modified fluorosilicone polymer. The modified fluorosilicone polymer provided by the invention is used as a basic polymer to replace conventional simethicone, and is matched with alpha, omega-dihydroxy polydimethylsiloxane, a cross-linking agent, a coupling agent and other components to prepare a two-component silicone sealant which has relatively high normal-temperature and low-temperature strength and also has very good heat resistance and water resistance; the defect that the performance of an existing silicone sealant is reduced under the conditions of high temperature and water immersion is overcome. # imgabs0 #

The invention provides a bi-component silicone sealant with a long storage period and a preparation method thereof, and relates to the field of silicone sealant materials. The method comprises the following steps: preparing a component A from alpha, omega-dihydroxy polydimethylsiloxane, dimethyl silicone oil and a filler; the preparation method comprises the following steps: carrying out physical and chemical dual dehydration on alkoxy-terminated 107 glue, a filler and a dehydration material, and then carrying out pretreatment by using ketoxime siloxane to obtain a modified base material; pretreating a cross-linking agent, a coupling agent and a catalyst to obtain a mixed vulcanizing agent; preparing a component B from the improved base material, hydrophobic white carbon black and a mixed vulcanizing agent; the component A and the component B are mixed according to the volume ratio of (1-2): 1, and the two-component silicone sealant is prepared. The two-component silicone sealant disclosed by the invention does not have obvious thickening in a 12-month long-term storage process, can keep stable breaking time and vulcanization effect in a 12-month period of validity, and has very important significance on the scenes such as foreign trade, ocean transportation and the like which require long storage periods.

The invention discloses a high-adhesion heat-conducting organic silicon sealant which is prepared from the following substances in parts by weight: 2 to 15 parts of vinyl silicone oil, 2 to 15 parts of vinyl resin, 0.2 to 10 parts of hydrogen-containing polysiloxane, 0.05 to 5 parts of adhesive, 0.05 to 1 part of catalyst, 0.01 to 1 part of inhibitor and 90 to 180 parts of modified heat-conducting filler. The heat-conducting organic silicon sealant prepared by the invention is an addition type single-component high-temperature rapid curing adhesive, is low in viscosity, convenient to use, green and environment-friendly, not only has a relatively high heat conductivity coefficient and can effectively transfer and disperse heat, but also has good adhesive property and electrical insulation property. The sealant is generally used in the fields of heat dissipation of automobile electronic components, heat dissipation positioning sealing of PCBs and electronic components, bonding of substrates (such as aluminum, copper and nickel-plated cover plates) and the like, and even can be used as PTIM on small and medium-sized chips.

The utility model provides a silicone sealant weather resistance detection device, which relates to the technical field of silicone sealant detection and comprises a box body, a box door and a transmission belt, and the front surface of the box body is rotatably connected with the front surface of the box door through a hinge. During use, through cooperative use of the box body, the box door, the motor, the first belt pulley, the transmission belt, the second belt pulley, the mounting frame, the heating pipe, the clamping assembly and the detection assembly, a glass block of which the surface is coated with silicone sealant is clamped and fixed between the first frame and the second frame; according to the silicone sealant weather resistance detection device, the clamped sample can rotate in the box body and is uniformly heated by the plurality of heating pipes, irradiated by the ultraviolet lamp and sprayed by the spray head, so that the situation that the silicone sealant is heated unevenly during a weather resistance test, the aging degree is inconsistent, and the detection of the silicone sealant is influenced is avoided, and the detection effect of the silicone sealant weather resistance detection device is improved.

The invention belongs to the technical field of adhesives, and particularly discloses a single-component silicone sealant for stainless steel bonding and a preparation method thereof, and the single-component silicone sealant comprises the following components by weight: 50-60 parts of alpha, omega-dihydroxy polydimethylsiloxane; 10 to 15 parts of a polydopamine coated silicon carbide nanowire; 5 to 15 parts of modified nano aluminum oxide gel; 5 to 10 parts of methyltris (methylethylketoxime) silane; 1 to 3 parts of dodecyl tris (methylethylketoxime) silane; 0.03 to 0.3 part of a coordination enhanced organic tin catalyst; and 8-14 parts of a plasticizer. According to the single-component silicone sealant for stainless steel bonding and the preparation method of the single-component silicone sealant, the modified nanometer aluminum oxide gel is selected, the bonding performance of stainless steel in a humid and hot environment is promoted and improved, the silicon carbide nanowire is coated with polydopamine, the bonding performance of the stainless steel is effectively improved, and the single-component silicone sealant can be widely applied to various indoor and outdoor scenes.

The invention relates to a silicone sealant, and belongs to the technical field of adhesives. The ceramic powder is modified by using the silane coupling agent kh-550 and the flame retardant TBC according to the characteristic that the amino group reacts with an isocyanate group, the ceramic powder is grafted with the kh-550 and then has the amino group on the surface, and the amino group can react with the isocyanate group in the flame retardant TBC to obtain the modified ceramic powder grafted with the flame retardant TBC; after the modified ceramic powder is grafted with the flame retardant, the problem of phase separation possibly caused by direct blending can be avoided, the overall components are more uniform, the synergistic flame retardant effect of an organic layer and an inorganic layer is better exerted, in addition, the modified ceramic powder can react with 107 silicone rubber to form chemical bonds, the bridging effect of a molecular layer is achieved, and the flame retardant effect is improved. The bonding force between an organic interface and an inorganic interface is enhanced, the overall crosslinking density of the sealant is improved, and the finally prepared silicone sealant has good fireproof and flame-retardant properties and mechanical properties.

The invention provides a dealcoholized silicone sealant with high tear strength and fatigue resistance and a preparation method thereof. The silicone sealant comprises the following components in parts by weight: 100 parts of alpha, omega-dihydroxy polysiloxane, 20-40 parts of polyborosiloxane, 5-15 parts of simethicone, 70-140 parts of nano active calcium carbonate, 3-7 parts of a cross-linking agent, 1-3 parts of a compound coupling agent, 2-5 parts of a titanate vulcanizing agent A and 2-4 parts of a titanate vulcanizing agent B. According to the method, polyborosiloxane and alpha, omega-dihydroxy polysiloxane are adopted as basic polymers, a titanate vulcanizing agent is compounded, and a filler, a cross-linking agent, a coupling agent and the like are matched to obtain the dealcoholized silicone sealant which has relatively high tear strength and excellent fatigue resistance; and obvious negative effects on the surface drying time, the tensile strength, the elongation at break and other mechanical properties and the adhesive property of the silicone sealant are avoided. The invention also overcomes the defects of poor mechanical fatigue resistance and tear resistance of the existing silicone sealant.

The transparent deacidification type long-acting mildew-proof silicone sealant is prepared from the following components in parts by mass: 80 to 110 parts of basic polymer, 15 to 25 parts of plasticizer, 6 to 9 parts of cross-linking agent, 10 to 15 parts of filler, 0.05 to 0.2 part of mildew preventive, 1 to 2 parts of tackifier and 0.05 to 0.2 part of catalyst, the cross-linking agent is any one or a combination of more of methyl triacetoxysilane, ethyl triacetoxysilane, propyl triacetoxysilane, methyl tris (2-ethyl acetoxygroup) silane or methyl tris (benzoyloxy) silane; and the cross-linking agent is any one or a combination of more of methyl triacetoxysilane, ethyl triacetoxysilane, propyl triacetoxysilane, methyl tris (benzoyloxy) silane. Through the design of the sealant formula, the sealant with excellent comprehensive performance can be obtained, the curing speed is high, the bonding performance is good, long-acting mildew prevention is achieved, and the use scene of the sealant is widened.

The invention discloses a damp-heat aging resistant two-component silicone sealant and a preparation method thereof, and relates to the technical field of organosilicon materials, the sealant comprises a component A and a component B, the component A is prepared from 50 to 70 parts of filler nano calcium carbonate, 30 to 50 parts of 107 # silicone rubber, 0.003 to 0.3 part of polyphenol substances and 0.01 to 1 part of catalyst; the component B comprises 90-110 parts of a base material, 1-10 parts of a cross-linking agent, 0.4-3 parts of a coupling agent and 0.01-0.08 part of a catalyst, and the base material is prepared from 50-70 parts of filler nano calcium carbonate and 30-50 parts of 107 # silicone rubber. The method disclosed by the invention is mild in reaction condition, simple in process and low in equipment requirement, and the prepared two-component silicone sealant can meet deep and rapid curing, is excellent in adhesion to glass, metal and plastic, has excellent damp-heat aging resistance and has a wide application prospect in the field of sealants.

The invention provides a dealcoholized silicone sealant rapidly cured at an initial stage and a preparation method thereof, and the preparation method comprises the following steps: dispersing a metal organic framework MIL-101, a silane coupling agent and calcium carbonate in an organic solvent, and reacting for 5-7 hours to obtain MIL-101 (at) CaCO3; the preparation method comprises the following steps: mixing and dispersing alpha, omega-dihydroxy polydimethylsiloxane, alkoxy-terminated polydimethylsiloxane, MIL-101 and CaCO3, a cross-linking agent, a coupling agent and a catalyst, so as to obtain the dealcoholized silicone sealant. CaCO3 is modified through a metal organic framework MIL-101, the migration rate of water vapor in the filler is greatly increased, the diffusion coefficient of the water vapor in the filler is 0.112 cm < 2 > / s at the temperature of 25 DEG C and the relative humidity of 30%, and the mechanical strength is guaranteed; on the basis, alkoxy-terminated polydimethylsiloxane is matched, so that the curing rate is further improved, and the curing depth within 6 hours can reach 1mm or above.

The invention relates to the technical field of sealants, in particular to a silicone fireproof sealant for buildings. Quaternary ammonium salt modified silicone oil is added in the preparation process of a silicone sealant base adhesive, and a quaternary ammonium salt group is introduced through a ring-opening reaction of epoxy-terminated polyether and trimethylamine hydrochloride, so that a microbial cell membrane structure is destroyed, and broad-spectrum antibiosis is realized; chemical bonding of quaternary ammonium salt groups and a silicone oil main chain avoids the problem of migration failure of a traditional mildew preventive; secondly, the modified aluminum hydroxide can improve the flame retardant property of the sealant, after the aluminum hydroxide is modified by vinyl trimethoxy silane, the surface hydrophobicity of the sealant can be enhanced, the dispersity of the sealant in base glue is improved, the heat absorption efficiency is high during thermal decomposition, and the combustion speed can be delayed, so that the fireproof performance is improved; the modified aluminum hydroxide is combined with the melamine and the modified hollow glass beads for synergism, so that the prepared silicone fireproof sealant has excellent fireproof performance.

The utility model discloses feeding equipment for silicone adhesive production and preparation. The feeding equipment comprises a storage tank and a feeding chamber, a feeding mechanism is arranged in front of the storage tank; a conveying mechanism and a bag discharging mechanism are arranged in the storage tank; a discharge port of the storage tank is connected with the feeding chamber through the conveying unit; and the feeding chamber is connected with the reaction kettle through a powder flow pump. According to the bagged raw material feeding device, the storage tank and the feeding chamber are arranged, bagged raw materials are conveyed into the storage tank to be discharged through the feeding mechanism, bagged raw material feeding operation is carried out inside, raised dust is limited in the storage tank, and pollution to the outside is reduced; the conveying unit is arranged to be connected with the feeding chamber to convey raw materials into the feeding chamber, the powder flow pump is used for controlling the amount of the raw materials actually fed into the reaction kettle, automatic quantitative feeding is achieved, and compared with original manual weighing feeding, the automatic quantitative feeding device is more accurate and stable; the automatic quantitative feeding device has the advantages that dust is not prone to rising during feeding of bagged materials, and automatic quantitative feeding is relatively accurate.

The invention provides a high-performance organosilicon sealant for electronic packaging, and relates to the technical field of organosilicon sealants. The organic silicon sealant is prepared from the following raw materials: methyl vinyl silicone oil, vinyl dimethyl silane, a platinum catalyst, fumed silica, a B4Cw (at) ZrO2 compound, ethynyl cyclohexanol, a silane coupling agent, a titanate coupling agent, a cerium-zinc composite antioxidant and an auxiliary antioxidant. The B4Cw (at) ZrO2 compound is prepared from boron carbide whiskers and nano zirconium oxide sol; the cerium-zinc composite antioxidant is prepared from cerium nitrate, zinc nitrate and ammonia water. The preparation method of the high-performance organic silicon sealant for electronic packaging comprises the following steps: pretreating boron carbide whiskers, synthesizing a B4Cw-coated ZrO2 compound, preparing a cerium-zinc composite antioxidant, preparing a basic rubber material, and preparing the organic silicon sealant. The prepared organic silicon sealant is high in mechanical strength, excellent in elastic property and high in durability.

The invention discloses a single-component flame-retardant silicone sealant and a preparation method thereof, and aims to provide a sealing material with excellent flame retardance, good adhesive force and long weather resistance. Comprising the following raw materials: 30 to 50 parts of alpha, omega-dihydroxy polydimethylsiloxane, 30 to 50 parts of nano calcium carbonate, 1 to 5 parts of a flame retardant, 5 to 15 parts of a flame-retardant filler, 0.3 to 0.5 part of a cross-linking agent, 0.3 to 0.8 part of a coupling agent and 0.02 to 0.05 part of a catalyst. By optimizing the proportion of the components and introducing the specific phosphorus-based flame retardant and the flame-retardant inorganic filler, the sealant can effectively inhibit combustion and delay flame propagation when encountering fire. Meanwhile, the flame-retardant sealant disclosed by the invention also shows excellent mechanical properties and weather resistance, is easy for industrial production and has a wide market application prospect.

The invention discloses a high-elasticity anti-aging foamed silica gel sealing element, and belongs to the technical field of sealing materials. The silicone rubber is prepared from raw materials including methyl vinyl silicone rubber, fumed silica, hydroxyl-terminated polydimethylsiloxane and the like according to specific parts by weight through the processes of mixing, foaming vulcanization and the like. The apparent density of the sealing element is 0.3-0.6 g / cm < 3 >, the Shore A hardness is 25-45 degrees, the tensile strength is larger than or equal to 2.5 MPa, the elongation at break is larger than or equal to 350%, the performance retention rate is high after the sealing element is aged for 1000 h at the temperature of 150 DEG C, and the sealing element has excellent elasticity and aging resistance. The surface of the anti-slip sealing gasket can be provided with anti-slip textures to meet sealing requirements in the fields of automobiles, electronics and the like, and is long in service life and high in practicability.

The invention relates to the technical field of silicone adhesives, in particular to a silicone sealant containing natural fibers, and a preparation method and application thereof. The silicone sealant containing natural fibers comprises 80-90 parts of alkoxy-terminated polydimethylsiloxane, 30-50 parts of plasticizer, 15-35 parts of filler, 3-8 parts of crosslinking agent, 1.5-3.5 parts of curing accelerator, 0.5-1 part of catalyst, 0.5-1 part of coupling agent, 0.5-2 parts of stabilizer, 4-5.5 parts of natural fibers, 3-6 parts of dispersant and 1-2 parts of reversible swelling material, wherein the natural fibers are used to form an irregular three-dimensional network in the silicone sealant to reduce the occurrence of debonding; the curing accelerator constructs micropores, and the reversible swelling material makes it difficult for rainwater to enter indoors through the micropores or gaps; and the preparation method of the silicone sealant containing natural fibers comprises the steps of soaking the natural fibers in the dispersant to obtain a mixture, and respectively adding the mixture while adding the plasticizer, the crosslinking agent, the filler and the reversible swelling material to reduce the aggregation of the natural fibers.

The invention relates to the technical field of silicone rubber sealing materials, and discloses a fast-curing matte silicone sealant and a preparation method thereof.The silicone sealant is prepared from, by mass, 100 parts of alpha, omega-dihydroxy polydimethylsiloxane, 5-15 parts of a reactive plasticizer, 70-120 parts of calcium carbonate, 5-10 parts of a cross-linking agent, 1-5 parts of a coupling agent, 0.5 part of a catalyst and 0.5-1 part of a vulcanization accelerator; 0.2 to 1.5 parts of a reaction type matte agent solution; the reaction type matte agent solution is a mixture of hydroxylated eleostearic acid triglyceride and a cross-linking agent. The silicone sealant prepared by the invention has the advantages of smooth surface, excellent matte effect, weather aging resistance, thixotropy, rapid curing and the like, can be used as a sealing material for high-end buildings, and has a wide application prospect.

The invention relates to a silicone sealant with nano calcium carbonate partially replaced by modified heavy calcium carbonate. The silicone sealant comprises the following components: 200 to 500 parts of hydroxyl-terminated polydimethylsiloxane, 300 to 800 parts of nano calcium carbonate, 10 to 250 parts of modified heavy calcium carbonate, 100 to 250 parts of heavy calcium carbonate, 1 to 10 parts of a catalyst, 50 to 200 parts of a plasticizer, 8 to 20 parts of a coupling agent and 25 to 60 parts of a cross-linking agent. In the preparation process, a certain part of modified heavy calcium carbonate is added and the same part of nano calcium carbonate is reduced to be applied to preparation of the sealant, so that the modified heavy calcium carbonate can partially replace the nano calcium carbonate to prepare the silicone sealant under the condition that the mechanical properties such as colloid strength and elongation at break are basically not reduced; the operation process is simple, and the production cost of a glue factory is reduced.

The utility model relates to the technical field of silicone sealants, and discloses a silicone sealant thermal aging performance testing device which comprises a working table, a first groove is formed in the bottom of the inner side of the working table, and a first motor is fixedly connected to the middle lower portion of the front side of the working table. And the output end of the first motor penetrates through the first groove and is fixedly connected with a first rotating rod, the rear end of the first rotating rod is fixedly connected with a driving bevel gear, the left side and the right side of the interior of the first groove are each rotationally connected with a first threaded rod, and the adjacent ends of the two first threaded rods are fixedly connected with a driven bevel gear. According to the silicone sealant stretching device, a second threaded rod is rotated, a movable plate moves downwards, a first motor works to drive a driving bevel gear to rotate, and a driven bevel gear rotates along with the driving bevel gear, so that a first threaded rod rotates, two movable blocks move in opposite directions, silicone sealant is stretched, the silicone sealant is heated more uniformly, detection data deviation is reduced, and the detection efficiency is improved. Therefore, the practicability of the equipment is improved, and the requirements of users can be met.

The invention belongs to the technical field of silicone sealants, and particularly discloses a transparent silicone sealant and a preparation method thereof. The transparent silicone sealant is prepared from the following raw materials in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane; 8-12 parts of a diluent; 6-10 parts of a filler; 6-10 parts of a cross-linking agent; 1-3 parts of a self-made coupling agent; 0.1 to 0.3 part of a catalyst; wherein the self-made coupling agent is prepared by compounding gamma-aminopropyl trimethoxy silane and an amino silane oligomer, and the self-made coupling agent is prepared by compounding the gamma-aminopropyl trimethoxy silane and the amino silane oligomer; the mass ratio of the gamma-aminopropyl trimethoxy silane to the amino silane oligomer is (1: 1)-(1: 4). According to the invention, the modulus, heat resistance and wet adhesive force of a finally cured coating can be obviously improved, and the coating has very strong storage stability, is not easy to generate performance change in a storage process, and is beneficial to actual production control and long-term storage.

A low-modulus, high-resilience modified alcohol-based silicone sealant, its preparation method, and its application are disclosed, relating to the field of sealant materials technology. The silicone sealant comprises the following components in parts by weight: 100 parts of α,ω-alkoxysilane ethylidene-terminated polydimethylsiloxane, 30-80 parts of plasticizer, 80-150 parts of reinforcing filler, 0.5-20 parts of silane crosslinking agent, 0.5-10 parts of silane tackifier, and 0.01-1 part of Lewis acid catalyst; wherein the plasticizer is α-alkoxysilane ethylidene-terminated polydimethylsiloxane. The low-modulus, high-resilience silicone sealant of this invention exhibits fast surface drying speed, low modulus, high elastic recovery rate, good adhesion, and weather resistance.

The application discloses a kind of flame-retardant mildew-proof prepolymer, transparent flame-retardant mildew-proof silicone sealant and preparation method thereof.The flame-retardant mildew-proof prepolymer is prepared from raw materials including the following components by weight: mildew-proof agent 0.5-10 parts, flame retardant 20-50 parts, tackifier composition 0.2-2 parts;The tackifier composition is composed of alkyl acetoacetate, trimethylsilyl ethyl acetate, 3-isocyanate propyl trimethoxysilane and polyether silicone oil.The transparent flame-retardant mildew-proof silicone sealant is prepared from raw materials including the following components: alkyl alkoxy-terminated polydimethylsiloxane, white carbon black, the flame-retardant mildew-proof prepolymer, crosslinking agent, catalyst, coupling agent.The transparent flame-retardant mildew-proof silicone sealant prepared by the application not only has very high transparency, but also has excellent flame-retardant effect, long-lasting mildew-resistant and antibacterial properties, and good bonding stability and mechanical strength.

This invention provides an organosilicon sealant composition for anti-fog automotive lights and its preparation method. The organosilicon sealant composition for anti-fog automotive lights comprises the following components: α,ω-dihydroxy polydimethylsiloxane, a first crosslinking agent, a second crosslinking agent, a catalyst, a filler, a coupling agent, and a plasticizer. The first crosslinking agent has 3 alkoxy functional groups, the second crosslinking agent has ≥4 alkoxy functional groups, and the D3-D10 content of α,ω-dihydroxy polydimethylsiloxane is 0.01-0.05 wt%. This invention utilizes a polyalkyloxysilane derivative prepared from a tertiary amine polyol and an isocyanate-based silane coupling agent as a non-volatile second crosslinking agent, which has high activity, does not reduce the reaction rate, and can reduce the amount of the volatile first crosslinking agent. Furthermore, using α,ω-dihydroxy polydimethylsiloxane with a low D3-D10 content as the base adhesive can further reduce volatile components, making the automotive lights less prone to fogging.

The utility model discloses a silicone sealant dewatering device which comprises a dewatering outer barrel, a feeding pipe and a vacuum connecting pipe are arranged on the dewatering outer barrel, a driving motor is fixedly installed on the dewatering outer barrel, the output end of the driving motor is connected with a rotating shaft, one end of the rotating shaft extends into the dewatering outer barrel, and the other end of the rotating shaft is connected with a vacuum pump. According to the silicone sealant dehydration device, a silicone sealant is placed in the dehydration outer barrel, the driving motor operates to drive the multiple main stirring blades to rotate, the heating and dehydration time of the silicone sealant is effectively shortened through stirring, and the dehydration efficiency of the silicone sealant is improved. The arranged driving assembly can drive the rotating seat to rotate so as to drive the multiple auxiliary stirring blades to rotate, the silicone sealant in the dewatering outer barrel can be effectively stirred through multiple rotating stirring, the stirring effect is good, multiple stirring can be conducted only through one motor, and the cost can be relatively reduced.

The utility model provides an ultralow-energy-consumption building external window airtight structure which comprises a structure base layer, an external window and an energy-saving auxiliary frame. The energy-saving auxiliary frame is pre-buried at the edge, connected with the outer window, of the structure base layer, and the energy-saving auxiliary frame transversely crosses the indoor side and the outdoor side of the outer window; the outer window is detachably connected to the energy-saving auxiliary frame; the waterproof vapor-proof film is laid on the joint face of the indoor side of the energy-saving auxiliary frame and the structural base layer. The waterproof vapor-permeable film is laid on the joint surface of the outdoor side of the energy-saving auxiliary frame and the structural base layer; the closing-up positions of the waterproof vapor-proof film and the waterproof vapor-permeable film are coated with silicone sealants. The air tightness of the outer window is guaranteed, indoor and outdoor cold and hot air exchange and cold and hot energy loss are reduced, and the energy-saving and emission-reducing effects of a building are achieved; the building sound insulation performance and the air quality are improved, the energy use efficiency is improved, meanwhile, water vapor is discharged outdoors in time, the energy-saving auxiliary frame of the outer window is protected against corrosion, the service life of the outer window and the building is prolonged, and an effective guarantee is provided for long-term use of the building.

The invention is applicable to the technical field of organic silicon sealant production equipment, and provides an organic silicon sealant production reaction kettle which comprises a shell and a reaction kettle liner, and a top cover is mounted on the reaction kettle liner; the reaction kettle further comprises a working module, the working module comprises a main shaft arranged in the inner container of the reaction kettle, a driving unit is further arranged on the top cover, a plurality of stirring rods are annularly installed on the main shaft, an auxiliary scraping plate is connected between the stirring rods located in the same vertical direction, and the upper end of the main shaft is further sleeved with a sliding sleeve. A lifting unit is further arranged on the top cover, an adjusting unit is installed on the sliding sleeve, and the adjusting unit is used for driving the auxiliary scrapers to linearly move in the radial direction of the main shaft through the sliding sleeve. The device is simple in structure, integration of multiple working modes can be achieved, multiple functions of stirring, bubble removing and cleaning are achieved, the production efficiency of the organic silicon sealant is effectively improved, the working efficiency is high, and the using effect is good.

This utility model belongs to the technical field of chemical production equipment and discloses a waste gas treatment device for silicone sealant production. It includes suction hoods installed at various points on the production line, which are sequentially connected via pipes to a dust collector, an incinerator, a wet electrostatic precipitator, an alkaline scrubbing tower, an induced draft fan, and a chimney. The outlet of the dust collector is connected to the inlet of the incinerator, the outlet of the incinerator is connected to the inlet of the wet electrostatic precipitator, the outlet of the wet electrostatic precipitator is connected to the inlet of the alkaline scrubbing tower, the outlet of the alkaline scrubbing tower is connected to the inlet of the induced draft fan, and the outlet of the induced draft fan is connected to the inlet of the chimney. This utility model can treat the waste gas generated during silicone sealant production, ensuring environmental and personal safety.

Provided is a hot melt adhesive for insulating glass spacer, prepared from raw materials comprising the following components: 1-10 parts by weight of butyl rubber, 25-50 parts by weight of a polyisobutylene mixture; 5-15 parts by weight of a tackifying resin; 1-15 parts by weight of a tackifier; 5-15 parts by weight of a polymer; 0.1-1 part by weight of a lubricant; 0.1-1 part by weight of an antioxidant; 15-50 parts by weight of a filler; 1-10 parts by weight of a water absorbent; and 5-25 parts by weight of carbon black. Compared with the prior art, in the hot melt adhesive for insulating glass spacer provided in the present disclosure, components with specific contents are used, such that relatively good overall interaction is achieved, the thixotropy of the product is good, and the adhesion to both silicone sealant and glass is excellent.

The application provides a silicone sealant not prone to discoloration and a preparation method thereof, and relates to the technical field of silicone sealants. The silicone sealant comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 70-130 parts of fillers, 0-20 parts of dimethyl silicone oil, 5-12 parts of a crosslinking agent, 1-3 parts of a coupling agent oligomer, 0.5-3 parts of an epoxy coupling agent and 0.01-0.5 parts of a catalyst. The application adopts a customized amino coupling agent oligomer with a specific structure, and optimizes the formula to achieve optimal effects by matching 107 glue, fillers and the like at a proper ratio. The application can improve the poor high-temperature tensile bonding property and the discoloration under high temperature of the existing silicone sealant, realizes good high-temperature bonding property and is not prone to discoloration, and in particular, the discoloration phenomenon under high-temperature application scenarios is obviously improved, thereby meeting the high requirements in special building, automobile, electronic and electrical applications and the like.