WO2018036431A1 - Joint d'étanchéité en caoutchouc de silicone nanocomposite modifié et sa préparation - Google Patents

Joint d'étanchéité en caoutchouc de silicone nanocomposite modifié et sa préparation Download PDF

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Publication number
WO2018036431A1
WO2018036431A1 PCT/CN2017/098074 CN2017098074W WO2018036431A1 WO 2018036431 A1 WO2018036431 A1 WO 2018036431A1 CN 2017098074 W CN2017098074 W CN 2017098074W WO 2018036431 A1 WO2018036431 A1 WO 2018036431A1
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modified
parts
graphene
sealing ring
raw rubber
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PCT/CN2017/098074
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Chinese (zh)
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段曦东
李晓丰
毛志浩
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广东纳路纳米科技有限公司
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Publication of WO2018036431A1 publication Critical patent/WO2018036431A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C08K5/541—Silicon-containing compounds containing oxygen
    • C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
    • C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Definitions

  • the invention relates to the technical field of sealing rings, in particular to a modified nano composite silicone sealing ring and a preparation thereof.
  • the silicone sealing ring As a key connector between the sealing member and the component, the silicone sealing ring is widely used in aerospace, medical, automotive, household appliances and the like because of its excellent heat resistance, low temperature elasticity and oxidation resistance.
  • the silicone sealing ring itself has high water vapor and gas permeability, which makes the sealing performance lower, and decays aging over time during use, silicone rubber Gradually losing the elasticity, the mechanical properties of the silicone sealing ring are reduced, and the reduction of the airtightness is further amplified, resulting in undesirable phenomena such as air leakage, water leakage, oil leakage, etc., which affects its application as a sealing material.
  • the present invention adopts the following technical solutions:
  • the modified nano composite silicone sealing ring of the invention comprises: a raw rubber mixing compound and a vulcanizing agent in a weight ratio of 100: 0.5-10;
  • the raw rubber compounding compound comprises: 70-100 parts of methyl vinyl silicone rubber, 1-20 parts of plasticizer, 0.01-10 parts of modified nano additive, 10 to 50 parts of reinforcing filler, 0.5 to 5 parts of coupling agent;
  • the modified nano additive is one of modified white graphene, modified graphene, and graphene oxide.
  • the raw rubber compounding compound comprises: 80-100 parts of methyl vinyl silicone rubber, 1-15 parts of plasticizer, 0.05-5 parts of nano-modifying additive, 15-40 parts by weight. Reinforcing filler, 0.5 ⁇ 3 parts coupling agent.
  • the methyl vinyl silicone rubber has a vinyl mole percentage of 0.12%, 0.25% or 0.56%.
  • the methyl vinyl silicone rubber has a vinyl mole percentage of 0.25% in consideration of the plasticity and mechanical properties of the raw rubber.
  • the modified white graphene is treated with 5 to 10 layers of white graphene via a long-chain Lewis base, a long-chain Lewis acid, a sulfonate, a quaternary amine or a nonionic surfactant to increase white graphite.
  • the affinity of the alkene to the substrate; the modified white graphene is 5 to 10 layers of graphene treated with polyvinylpyrrolidone (PVP) or sodium dodecylbenzenesulfonate (SDBS) surfactant to increase the graphene pair The affinity of the matrix.
  • PVP polyvinylpyrrolidone
  • SDBS sodium dodecylbenzenesulfonate
  • the long-chain Lewis base is oleylamine or the like; the long-chain Lewis acid is long-chain borane or the like; the sulfonate is sodium dodecylbenzenesulfonate or the like; and the quaternary amine is bromine
  • the cetylpyridine or the like; the nonionic surfactant is a polyethylene oxide alkyl alcohol amide or the like.
  • the plasticizer is selected from the group consisting of dimethicone, hydroxypolydimethylsiloxane, and vinyltrimethoxysilane;
  • the reinforcing filler is one of fumed silica, silicon micropowder, and carbon black;
  • the coupling agent is one of a silane coupling agent KH-550, a silane coupling agent KH-570, and n-butyl titanate;
  • the vulcanizing agent is one of benzoyl peroxide, di-tert-butyl peroxide, and dicumyl peroxide.
  • the preparation method of the modified nano composite silicone sealing ring of the invention comprises:
  • Step 2 Raw rubber mixing: According to the parts by weight, the methyl vinyl silicone rubber, the plasticizer, the coupling agent, the modified nano additive and the reinforcing filler are respectively mixed, and after being mixed for several times by the internal mixer, the double is used. Extrusion by a screw extruder to obtain a raw rubber compound;
  • Step 3) Vulcanization molding: Weigh the raw rubber compound and vulcanizing agent in step 2) according to the proportion, mix and disperse uniformly in the internal mixer, and then put it into the mold and vulcanize it by hot press molding to obtain modification. Nano composite silicone sealing ring.
  • the raw rubber mixing process in the step 2) is that the components are kneaded in an internal mixer at a temperature of 40 to 120 ° C for 5 to 60 minutes, and then subjected to a twin screw extruder at a temperature of 80. Extrusion at -250 ° C to obtain a raw rubber compound.
  • the control temperature is 100 to 250 ° C
  • the pressure is 1 to 20 Mpa
  • the vulcanization molding time is 10 to 90 min.
  • Silica gel seals exist in high temperature and harsh environments for a long time, and the side chain methyl groups are easily oxidized to form crosslinks, which leads to hardening of the materials; the use of surfactant-treated white graphene, graphene and oxidation of the surface containing more active groups Graphene can achieve good wettability with the matrix when added in a small amount, increase the toughness to enhance the effect, and improve the mechanical strength of the silicone sealing ring.
  • the invention selects a material obtained by modifying 5 to 10 layers of white graphene, graphene or graphene oxide nano powder, wherein the atomic layer can effectively isolate gas atom molecules, and the gas molecules only pass through the silicone rubber.
  • the modified white graphene, modified graphene, and modified graphene oxide atomic layer are less than ten layers, the layer arrangement Compact, uniform, and a large number of barrier sheets, the gas bypasses the silicone rubber, the path becomes longer, and a small amount of addition can well block the passage of gas, increasing the airtightness of the nanocomposite silicone sealing ring.
  • the invention improves the water vapor, gas permeability deterioration and mechanical property degradation caused by aging of the silicone sealing ring during long-term use, greatly prolongs the service life of the sealing material, and has high application value.
  • Step 1) Modification of the nano additive 5 to 10 layers of white graphene are selected by soaking for 12 hours with 0.1% aqueous oleylamine solution, and the modified white graphene additive is obtained by centrifugation and vacuum drying;
  • Step 2 Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 15 parts of hydroxyl terminated polydimethylsiloxane, and 3 parts of a silane coupling agent are weighed by weight. KH-570, 0.1 parts of modified white graphene additive prepared in step 1) and 30 parts of carbon black, which are sequentially added to an internal mixer for kneading, the mixing temperature is 90 ° C, the mixing time is 50 min; The extruder is extruded at a temperature of 120 ° C to obtain a raw rubber compound;
  • Step 3) vulcanization molding: 100 parts by weight of the raw rubber mixing compound obtained in the step 2) and 3 parts of di-tert-butyl peroxide are respectively weighed, mixed and dispersed at room temperature by an internal mixer, and then placed in a special system.
  • the modified nanocomposite silicone sealing ring was obtained by hot pressing vulcanization in a mold at a temperature of 150 ° C, a pressure of 18 MPa, and a time of 40 min.
  • Step 1) Modification of the nano additive 5 to 10 layers of white graphene are selected by soaking for 12 hours with 0.1% aqueous oleylamine solution, and the modified white graphene additive is obtained by centrifugation and vacuum drying;
  • Step 2 Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 8 parts of hydroxyl terminated polydimethylsiloxane, and 1 part of a silane coupling agent are weighed in parts by weight. KH-570, 0.5 parts of modified white graphene additive prepared in step 1) and 20 parts of carbon black, which are sequentially added to an internal mixer for kneading, the mixing temperature is 60 ° C, the mixing time is 20 min; The screw extruder is extruded at a temperature of 180 ° C to obtain a raw rubber compound;
  • Step 3) vulcanization molding: 100 parts by weight of the raw rubber mixing compound obtained in the step 2) and 1.5 parts of di-tert-butyl peroxide are respectively weighed, mixed and dispersed at room temperature by an internal mixer, and then placed in a special system.
  • the modified nanocomposite silicone sealing ring was obtained by hot pressing vulcanization in a mold at a temperature of 180 ° C, a pressure of 12 MPa, and a time of 20 min.
  • Step 1) modification of the nano additive using 5 to 10 layers of graphene dispersed in a concentration of 0.3 mg / ml polyvinylpyrrolidone aqueous solution for 10 hours, after centrifugation, vacuum drying to obtain a modified graphene additive;
  • Step 2 Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 15 parts of hydroxyl terminated polydimethylsiloxane, and 3 parts of a silane coupling agent are weighed by weight. KH-570, 0.1 parts of modified graphene additive prepared in step 1) and 30 parts of carbon black, which are sequentially added to an internal mixer for kneading, the mixing temperature is 90 ° C, the mixing time is 50 min; The machine is extruded at a temperature of 120 ° C to obtain a raw rubber compound;
  • Step 3) vulcanization molding: 100 parts by weight of the raw rubber mixing compound obtained in the step 2) and 3 parts of di-tert-butyl peroxide are respectively weighed, mixed and dispersed at room temperature by an internal mixer, and then placed in a special system.
  • the modified nanocomposite silicone sealing ring was obtained by hot pressing vulcanization in a mold at a temperature of 150 ° C, a pressure of 18 MPa, and a time of 40 min.
  • Step 1) modification of the nano additive using 5 to 10 layers of graphene dispersed in a concentration of 0.3 mg / ml polyvinylpyrrolidone aqueous solution for 10 hours, after centrifugation, vacuum drying to obtain a modified graphene additive;
  • Step 2 Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 8 parts of hydroxyl terminated polydimethylsiloxane, and 1 part of a silane coupling agent are weighed in parts by weight. KH-570, 0.6 parts of modified graphene additive prepared in step 1) and 20 parts of carbon black, which are sequentially added to an internal mixer for kneading, the mixing temperature is 60 ° C, the mixing time is 20 min; Extrusion at a temperature of 180 ° C to obtain a raw rubber compound;
  • Step 3) vulcanization molding: 100 parts by weight of the raw rubber mixing compound prepared in the step 2) and 1.5 parts of di-tert-butyl peroxide are respectively weighed, mixed and dispersed at room temperature by an internal mixer, and then placed in a special system.
  • the modified nanocomposite silicone sealing ring was obtained by hot pressing vulcanization in a mold at a temperature of 180 ° C, a pressure of 12 MPa, and a time of 20 min.
  • Step 1) Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 15 parts of hydroxyl terminated polydimethylsiloxane, and 3 parts of a silane coupling agent are weighed by weight. KH-570, 0.1 part of graphene oxide additive and 30 parts of carbon black, which are sequentially added to the mixer for mixing, the mixing temperature is 90 ° C, the mixing time is 50 min, and the temperature of the twin-screw extruder is 120 ° C. Extrusion to obtain a raw rubber compound;
  • Step 2 Silica gel vulcanization molding: 100 parts by weight of the raw rubber mixing compound prepared in the step 2) and 3 parts of di-tert-butyl peroxide are separately weighed, mixed and dispersed at room temperature by an internal mixer, and then placed.
  • the modified nanocomposite silicone sealing ring was obtained by hot pressing vulcanization at a temperature of 150 ° C, a pressure of 18 MPa and a time of 40 min in a special mold.
  • Step 1) Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 8 parts of hydroxyl terminated polydimethylsiloxane, and 1 part of a silane coupling agent are weighed by weight. KH-570, 0.4 parts of graphene oxide additive and 20 parts of carbon black, which are sequentially added to the mixer for mixing, the mixing temperature is 60 ° C, the mixing time is 20 min, and the temperature of the twin-screw extruder is 180 ° C. Extrusion to obtain a raw rubber compound;
  • Step 3) vulcanization molding: 100 parts by weight of the raw rubber mixing compound obtained in the step 2) and 1.5 parts of di-tert-butyl peroxide are respectively weighed, mixed and dispersed at room temperature by an internal mixer, and then placed in a special system.
  • the modified nanocomposite silicone sealing ring was obtained by hot pressing vulcanization in a mold at a temperature of 180 ° C, a pressure of 12 MPa, and a time of 20 min.
  • Step 1) Raw rubber mixing: 100 parts of methyl vinyl silicone rubber having a vinyl mole fraction of 0.25%, 15 parts of hydroxyl terminated polydimethylsiloxane, and 3 parts of a silane coupling agent are weighed by weight. KH-570, and 30 parts of fumed silica, which are sequentially added to an internal mixer for kneading, the kneading temperature is 90 ° C, the kneading time is 50 min; and the twin-screw extruder is extruded at a temperature of 120 ° C. Obtaining the compound after mixing;
  • Step 2) vulcanization molding: 100 parts by weight of the compounded compound obtained in the step 2) and 3 parts of di-tert-butyl peroxide are respectively weighed, mixed and dispersed at room temperature by an internal mixer, and then placed in a special mold.
  • the medium-temperature thermoforming machine is hot-pressed and vulcanized at a temperature of 150 ° C, a pressure of 18 MPa, and a time of 40 min to obtain a composite silicone sealing ring.
  • Step 1) Raw rubber mixing: 100 parts by weight of methyl vinyl silicone rubber having a molar percentage of 0.25%, 8 parts of hydroxyl terminated polydimethylsiloxane, and 1 part of a silane coupling agent are weighed by weight. KH-570, and 20 parts of carbon black, which are sequentially added to the mixer for mixing, the mixing temperature is 60 ° C, the mixing time is 20 min; and the twin-screw extruder is extruded at 180 ° C to obtain a mixture. Refining rubber compound;
  • Step 2) vulcanization molding: 100 parts by weight of the compounded mixture obtained in step 2) And 1.5 parts of di-tert-butyl peroxide, mixed and dispersed uniformly at room temperature by an internal mixer, and then placed in a special mold to obtain a modified nanocomposite by hot pressing vulcanization at a temperature of 180 ° C, a pressure of 12 MPa, and a time of 20 min. Silicone sealing ring.
  • Table 1 shows the performance parameters of each example:
  • the modified nano-composite silicone sealing ring of the invention can significantly reduce the permeability of the composite silicone sealing ring to gas and water vapor and effectively improve the mechanical strength, and greatly prolong the service life of the sealing material, which is high. Value.

Abstract

L'invention concerne un joint d'étanchéité en caoutchouc de silicone nanocomposite modifié comprenant : un matériau de caoutchouc de mélange de caoutchouc brut et un agent de vulcanisation selon un rapport pondéral de 100:0,5 à 10. Le matériau de caoutchouc de mélange de caoutchouc brut comprend les parties suivantes en poids : 70 à 100 parties d'un caoutchouc de silicone méthylique de vinyle, 1 à 20 parties d'un plastifiant, 0,01 à 10 parties d'un nano-additif modifié, 10 à 50 parties d'une charge de renforcement et 0,5 à 5 parties d'un agent de couplage. Le nano-additif modifié est un graphène blanc modifié, un graphène modifié et un oxyde de graphène. Le joint d'étanchéité en caoutchouc de silicone composite est complété d'une petite quantité de particules nano-modifiées, ce qui permet d'augmenter les performances d'étanchéité et la résistance mécanique, sans affecter les autres propriétés du joint. Le joint d'étanchéité en caoutchouc de silicone nanocomposite modifié selon l'invention résout efficacement les problèmes de dégradation due à la perméabilité du joint à la vapeur d'eau et aux gaz, et la réduction des propriétés mécaniques due au vieillissement du joint sur une longue durée d'utilisation, ce qui prolonge considérablement la durée de vie du matériau d'étanchéité.
PCT/CN2017/098074 2016-08-22 2017-08-18 Joint d'étanchéité en caoutchouc de silicone nanocomposite modifié et sa préparation WO2018036431A1 (fr)

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CN201610705207.8 2016-08-22
CN201610705207.8A CN106317901B (zh) 2016-08-22 2016-08-22 一种改性纳米复合硅胶密封圈及其制备

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CN111944318A (zh) * 2020-07-30 2020-11-17 国网电力科学研究院武汉南瑞有限责任公司 优异力学性能的硅橡胶复合绝缘材料制备方法
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CN102604175A (zh) * 2012-02-23 2012-07-25 北京化工大学 制备氧化石墨烯/白炭黑/橡胶纳米复合材料的方法
CN103937265A (zh) * 2014-04-01 2014-07-23 天津大学 一种石墨烯—硅橡胶复合材料及其制备方法
CN105038254A (zh) * 2015-06-10 2015-11-11 苏州宏恒化工有限公司 一种用于密封圈的硅橡胶复合材料及其制备方法
CN106317901A (zh) * 2016-08-22 2017-01-11 广东纳路纳米科技有限公司 一种改性纳米复合硅胶密封圈及其制备

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CN109627580A (zh) * 2018-12-10 2019-04-16 上海玉城高分子材料股份有限公司 一种浅色永久抗静电改性聚丙烯材料及其制备方法
CN109627580B (zh) * 2018-12-10 2024-04-26 上海玉城高分子材料股份有限公司 一种浅色永久抗静电改性聚丙烯材料及其制备方法
EP3875429A1 (fr) 2020-03-03 2021-09-08 Avanzare Innovacion Tencologica S.L. Procédure pour produire du graphène et des matériaux graphéniques
CN111944318A (zh) * 2020-07-30 2020-11-17 国网电力科学研究院武汉南瑞有限责任公司 优异力学性能的硅橡胶复合绝缘材料制备方法
CN112159560A (zh) * 2020-09-27 2021-01-01 威海联桥新材料科技股份有限公司 一种硅橡胶-硅烷交联聚乙烯共混材料及其制备方法
CN112622136A (zh) * 2020-12-02 2021-04-09 浙江翔宇密封件有限公司 一种高铁用密封圈的生产工艺及其硫化设备
CN115558295A (zh) * 2021-07-02 2023-01-03 太仓瑞易得塑胶制造有限公司 一种建筑门窗用硅橡胶密封条及其制备方法
CN113604051A (zh) * 2021-08-20 2021-11-05 凤阳加松新型材料科技有限公司 一种硫化硅胶垫及其制作方法
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CN113831649A (zh) * 2021-11-08 2021-12-24 连云港市鼎尚包装有限公司 一种耐热型瓶盖密封材料的制备方法
CN113881396A (zh) * 2021-11-23 2022-01-04 东莞市高酷纳米科技有限公司 一种电子行业的高性能阻燃导热胶的制备
CN114015241A (zh) * 2022-01-06 2022-02-08 北京智天新航科技有限公司 一种聚氨酯改性有机硅阻尼材料及其制备方法
CN114015241B (zh) * 2022-01-06 2022-03-11 北京智天新航科技有限公司 一种聚氨酯改性有机硅阻尼材料及其制备方法

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