CN113773650B - 一种硅橡胶海绵及其制备方法 - Google Patents
一种硅橡胶海绵及其制备方法 Download PDFInfo
- Publication number
- CN113773650B CN113773650B CN202110873400.3A CN202110873400A CN113773650B CN 113773650 B CN113773650 B CN 113773650B CN 202110873400 A CN202110873400 A CN 202110873400A CN 113773650 B CN113773650 B CN 113773650B
- Authority
- CN
- China
- Prior art keywords
- silicone rubber
- mixing
- parts
- sponge
- carbon black
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 45
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006229 carbon black Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 18
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 17
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 17
- 239000010455 vermiculite Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 229920001285 xanthan gum Polymers 0.000 claims abstract description 14
- 239000000230 xanthan gum Substances 0.000 claims abstract description 14
- 229940082509 xanthan gum Drugs 0.000 claims abstract description 14
- 235000010493 xanthan gum Nutrition 0.000 claims abstract description 14
- 239000004088 foaming agent Substances 0.000 claims abstract description 13
- 239000011780 sodium chloride Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 10
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- VJRITMATACIYAF-UHFFFAOYSA-N benzenesulfonohydrazide Chemical compound NNS(=O)(=O)C1=CC=CC=C1 VJRITMATACIYAF-UHFFFAOYSA-N 0.000 claims description 2
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000004604 Blowing Agent Substances 0.000 claims 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims 1
- 239000004202 carbamide Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7404—Mixing devices specially adapted for foamable substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7461—Combinations of dissimilar mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use 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; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use 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; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
- C08J2383/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use 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; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明公开了一种硅橡胶海绵及其制备方法，硅橡胶海绵其原料包括以下质量份的各组分：硅橡胶100份；白炭黑10‑50份；结构控制剂0.5‑10份；甲基硅油0‑100份；发泡剂3‑12份；还原铁粉5‑10份；铝粉0.5‑3份；黄原胶2‑5份；氯化钠1‑5份；蛭石3‑15份；活性炭3‑15份；硫化剂1‑4份。硅橡胶海绵的制备方法包括以下步骤：(1)称取原料；(2)混炼：采用多段混炼方法进行混炼，每一段混炼完后进行停放；(3)硫化发泡。本发明中，还原铁粉、铝粉、黄原胶、氯化钠、蛭石、活性炭搭配合理，组合在一起后，可以吸收空气中的水分进行放热，可以使得海绵中间具有一定的温度，促进海绵的均匀发泡，可以明显的降低海绵的表观密度，海绵整体孔隙均匀度更好。
Description
技术领域
本发明属于橡胶海绵材料领域技术，尤其涉及一种硅橡胶海绵及其制备方法。
背景技术
海绵是一种广泛使用的多孔低密度材料，其具有保温、隔热、吸音、减震、阻燃、防静电、透气性能好等特性，广泛的用于各行各业。
硅橡胶海绵将有机硅弹性体的性能和多孔材料的性能结合于一身，不仅具有硅橡胶优异的耐高低温性能、耐老化性能、良好的绝缘性能、生理惰性以及化学稳定性等特征，同时，还兼具多孔材料的隔音隔热、轻质、吸收冲击载荷、密封等性能。因为其优异的综合性能以及其他弹性体无法取代的性能，在新能源、电子、轨道，尤其是国防领域具有较好的应用前景。硅橡胶一般通过添加白炭黑作为补强剂，且发泡后密度降低，导致其导热性能下降，在发泡过程中，设备或者模具两边的热量无法完整的传递到海绵中间，导致海绵内部受热与海绵两边不一致，进而影响海绵的密度均匀性，同时因热量无法到达中间，海绵发泡厚度受到限制。
发明内容
本发明所要解决的技术问题是，克服以上背景技术中提到的不足和缺陷，提供一种硅橡胶海绵及其制备方法。
为解决上述技术问题，本发明提出的技术方案为：
一种硅橡胶海绵，其原料包括以下质量份的各组分：
还原铁粉、铝粉、黄原胶、氯化钠、蛭石、活性炭搭配合理，组合在一起后，可以吸收空气中的水分进行放热，可以使得海绵中间具有一定的温度，促进海绵的均匀发泡。进一步的，还原铁粉和铝粉还具有良好的导热效果，能够较好的将设备或模具上的热量传导到海绵中间部分；蛭石可以将反应过程中的水分吸收进来，促进与还原铁粉、铝粉的反应，同时还具有较好的保温效果，可以将热量保持在海绵中间；黄原胶可以有效的吸收空气中的水分，也进一步的促进了各材料与水分反应生成热量。
优选的，所述硅橡胶为甲基乙烯基硅橡胶、苯基硅橡胶中的一种或几种。
优选的，所述白炭黑为沉淀法白炭黑、气相法白炭黑中的一种或两种的组合。
优选的，所述结构控制剂为羟基硅油或苯基硅二醇。
优选的，所述发泡剂为偶氮类、苯磺酰肼、脲基类发泡剂中的一种或几种；所述硫化剂为双二五硫化剂、双二四硫化剂中的一种或几种。
优选的，所述还原铁粉的粒径小于320目；所述铝粉的粒径小于100目；所述蛭石的粒径小于50目；所述活性炭的粒径小于320目。
优选的，所述硅橡胶海绵的原料还包括：0-100份的甲基硅油。
作为一个总的发明构思，本发明还提供了一种硅橡胶海绵的制备方法，包括以下步骤：
(1)称取原料；
(2)混炼：采用多段混炼方法进行混炼，每一段混炼完后进行停放；
(3)硫化发泡。
上述制备方法中，优选的，所述步骤(2)具体包括以下步骤：
①一段混炼：一段混炼采用开炼机混炼或采用开炼机与真空密炼机配合混炼；
一段混炼采用开炼机混炼时，投料顺序为：硅橡胶→占白炭黑总质量30-70％的白炭黑→结构控制剂→剩余部分白炭黑→甲基硅油→还原铁粉、铝粉、氯化钠、蛭石、活性炭、黄原胶→发泡剂、硫化剂，混炼后，将所得胶料薄通下片后，密封停放1-7天，停放环境温度小于37℃；
一段混炼采用开炼机与真空密炼机配合混炼时，首先采用真空密炼机混炼，投料顺序为：硅橡胶→占白炭黑总质量30-70％的白炭黑→结构控制剂→剩余部分白炭黑→甲基硅油→氯化钠、蛭石、活性炭、黄原胶，然后采用开炼机混炼，并在开炼机中加入发泡剂、还原铁粉、铝粉、硫化剂，辊温＜60℃；
②二段混炼：将经过步骤①处理后得到的胶料薄通，打三角包，出片，密封停放1-7天，停放环境温度小于37℃。
在必要情况下，还可进行三段混炼。
优选的，所述步骤(3)中，采用模压法硫化发泡或非模压硫化发泡。
与现有技术相比，本发明的有益效果为：
1、本发明通过加入还原铁粉、氯化钠、蛭石、活性炭、黄原胶、铝粉，可以明显降低海绵的表观密度，使海绵整体孔隙均匀度更好。
2、本发明制备得到的硅橡胶海绵其密度相对传统配方更加均匀，厚度也稍有增加。
具体实施方式
为了便于理解本发明，下文将结合较佳的实施例对本发明做更全面、细致地描述，但本发明的保护范围并不限于以下具体实施例。
除非另有定义，下文中所使用的所有专业术语与本领域技术人员通常理解含义相同。本文中所使用的专业术语只是为了描述具体实施例的目的，并不是旨在限制本发明的保护范围。
除非另有特别说明，本发明中用到的各种原材料、试剂、仪器和设备等均可通过市场购买得到或者可通过现有方法制备得到。
对比例1-2以及实施例1-实施例4：
对比例1-2以及实施例1-4中硅橡胶海绵原料的配比如表1所示：
表1硅橡胶海绵原料的配比表(按质量份计)
| 材料名称 | 对比例1 | 对比例2 | 实施例1 | 实施例2 | 实施例3 | 实施例4 |
| 硅橡胶110-2 | 100 | 100 | 100 | 100 | 100 | 100 |
| 白炭黑ZQ356 | 20 | 20 | 20 | 20 | 20 | 20 |
| 羟基硅油209 | 3 | 3 | 3 | 3 | 3 | 3 |
| 201甲基硅油 | 15 | 15 | 15 | 15 | 15 | 15 |
| 发泡剂AC | 2 | 2 | 1 | 3 | 3 | 2 |
| 发泡剂OBSH | 4 | 4 | 2 | 6 | 6 | 4 |
| 还原铁粉 | 0 | 9 | 9 | 9 | 9 | 4.5 |
| 氯化钠 | 0 | 4 | 4 | 4 | 4 | 2 |
| 蛭石 | 0 | 6 | 6 | 6 | 6 | 3 |
| 黄原胶 | 5 | 0 | 5 | 5 | 5 | 2.5 |
| 铝粉 | 3 | 0 | 3 | 3 | 3 | 1.5 |
| 活性炭 | 0 | 3 | 3 | 3 | 3 | 1.5 |
| 双二五硫化剂 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 0.5 |
上述配比表中还原铁粉的粒径为400目以下；蛭石的粒径为60目以下；铝粉的粒径为320目以下；活性炭的粒径为400目以下。
硅橡胶海绵的制备方法包括以下步骤：
(1)称取原料：按照表1中的配比精确称取各原料；
(2)混炼：
①一段混炼：一段混炼采用开炼机混炼，投料顺序为：硅橡胶→占白炭黑总质量40％的白炭黑→羟基硅油→剩余部分白炭黑→甲基硅油→还原铁粉、铝粉、氯化钠、蛭石、活性炭、黄原胶→发泡剂、硫化剂，混炼后，将所得胶料薄通下片后，密封停放2天，停放环境温度小于37℃；
②二段混炼：将经过步骤①处理后得到的胶料薄通，打三角包，出片，密封停放2天，停放环境温度小于37℃。
(3)硫化发泡：采用模压法进行硫化发泡，将胶料制备成所需片材后，精确称重，置于160℃平板中硫化发泡20分钟。
对比例1-2以及实施例1-4中的原料通过上述方法制备得到的胶料以及硅橡胶海绵的性能检测数据如表2所示：
表2胶料以及硅橡胶海绵的性能检测数据
由表2可知，从对比例1-2及实施例1-4可以看出，还原铁粉、氯化钠、蛭石、活性炭、黄原胶、铝粉的加入可以明显的降低海绵的表观密度，海绵整体孔隙均匀度更好。当降低该组合用量时，海绵表观密度随之上升，且海绵整体孔隙均匀度会变差。另外，通过调整发泡剂及硫化剂的量也可以有效调整海绵的表观密度，但对海绵整体密实均匀度无效果。
Claims (10)
1.一种硅橡胶海绵，其特征在于，其原料包括以下质量份的各组分：
2.根据权利要求1所述的硅橡胶海绵，其特征在于，所述硅橡胶为甲基乙烯基硅橡胶、苯基硅橡胶中的一种或几种。
3.根据权利要求1所述的硅橡胶海绵，其特征在于，所述白炭黑为沉淀法白炭黑、气相法白炭黑中的一种或两种的组合。
4.根据权利要求1所述的硅橡胶海绵，其特征在于，所述结构控制剂为羟基硅油或苯基硅二醇。
5.根据权利要求1-4中任一项所述的硅橡胶海绵，其特征在于，所述发泡剂为偶氮类、苯磺酰肼、脲基类发泡剂中的一种或几种；所述硫化剂为双二五硫化剂、双二四硫化剂中的一种或几种。
6.根据权利要求1-4中任一项所述的硅橡胶海绵，其特征在于，所述还原铁粉的粒径小于320目；所述铝粉的粒径小于100目；所述蛭石的粒径小于50目；所述活性炭的粒径小于320目。
7.根据权利要求1-4中任一项所述的硅橡胶海绵，其特征在于，所述硅橡胶海绵的原料还包括：0-100份的甲基硅油。
8.一种如权利要求1-7中任一项所述的硅橡胶海绵的制备方法，其特征在于，包括以下步骤：
(1)称取原料；
(2)混炼：采用多段混炼方法进行混炼，每一段混炼完后进行停放；
(3)硫化发泡。
9.根据权利要求8所述的硅橡胶海绵的制备方法，其特征在于，所述步骤(2)具体包括以下步骤：
①一段混炼：一段混炼采用开炼机混炼或采用开炼机与真空密炼机配合混炼；
一段混炼采用开炼机混炼时，投料顺序为：硅橡胶→占白炭黑总质量30-70％的白炭黑→结构控制剂→剩余部分白炭黑→甲基硅油→还原铁粉、铝粉、氯化钠、蛭石、活性炭、黄原胶→发泡剂、硫化剂，混炼后，将所得胶料薄通下片后，密封停放1-7天，停放环境温度小于37℃；
一段混炼采用开炼机与真空密炼机配合混炼时，首先采用真空密炼机混炼，投料顺序为：硅橡胶→占白炭黑总质量30-70％的白炭黑→结构控制剂→剩余部分白炭黑→甲基硅油→氯化钠、蛭石、活性炭、黄原胶，然后采用开炼机混炼，并在开炼机中加入发泡剂、还原铁粉、铝粉、硫化剂，辊温＜60℃；
②二段混炼：将经过步骤①处理后得到的胶料薄通，打三角包，出片，密封停放1-7天，停放环境温度小于37℃。
10.根据权利要求8或9所述的硅橡胶海绵的制备方法，其特征在于，所述步骤(3)中，采用模压法硫化发泡或非模压硫化发泡。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110873400.3A CN113773650B (zh) | 2021-07-30 | 2021-07-30 | 一种硅橡胶海绵及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110873400.3A CN113773650B (zh) | 2021-07-30 | 2021-07-30 | 一种硅橡胶海绵及其制备方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113773650A CN113773650A (zh) | 2021-12-10 |
| CN113773650B true CN113773650B (zh) | 2022-10-21 |
Family
ID=78836304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110873400.3A Expired - Fee Related CN113773650B (zh) | 2021-07-30 | 2021-07-30 | 一种硅橡胶海绵及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113773650B (zh) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4120561A1 (de) * | 1991-06-21 | 1992-12-24 | Hilti Ag | Haft-, dicht- und klebemasse auf silikonbasis |
| CN101845223B (zh) * | 2010-05-06 | 2012-06-20 | 江苏欣安新材料技术有限公司 | 硅酮高密度弹性体及其生产方法 |
| CN108003620B (zh) * | 2017-11-13 | 2021-09-21 | 杭州师范大学 | 一种生物基发泡剂发泡硅橡胶材料及其制备方法 |
| ES2914810T3 (es) * | 2018-03-13 | 2022-06-16 | Dow Global Technologies Llc | Espuma de poliuretano flexible que tiene un tiempo de recuperación prolongado |
| US10941251B2 (en) * | 2018-03-22 | 2021-03-09 | Momentive Performance Materials Inc. | Silicone polymer and composition comprising the same |
| CN111792884A (zh) * | 2020-06-28 | 2020-10-20 | 杭州佧斯家居设计有限公司 | 一种建筑用环保保温材料及其制备方法 |
-
2021
- 2021-07-30 CN CN202110873400.3A patent/CN113773650B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN113773650A (zh) | 2021-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100422263C (zh) | 一种闭孔型硅橡胶泡沫材料及其制备方法和用途 | |
| CN104059242B (zh) | 一种自粘性硅橡胶泡沫材料的制备方法 | |
| EP0784647B1 (en) | Epdm compositions and process for producing same | |
| CN105623593B (zh) | 一种双组份灌封硅胶及其制备方法与灌封方法 | |
| CN102827475B (zh) | 低导热系数发泡硅橡胶材料的制备方法 | |
| CN109370006A (zh) | 一种高表观质量吹塑微发泡汽车风道材料及其制备方法 | |
| CN113801361B (zh) | 一种硅橡胶泡沫材料及其制备方法 | |
| CN113773650B (zh) | 一种硅橡胶海绵及其制备方法 | |
| CN114644795B (zh) | 吸波材料及其制备方法和应用 | |
| CN109320964A (zh) | 一种苯基硅橡胶海绵阻尼材料及其制备方法 | |
| CN106117741A (zh) | 一种聚乙烯复合泡沫材料及其制备方法 | |
| JP5981116B2 (ja) | クロロプレンゴム連続気泡体及びその製造方法 | |
| CN101259741B (zh) | 抗静电高发泡材的制法 | |
| CN114149626B (zh) | 一种难燃的轻量型橡塑发泡制品及其制造方法 | |
| CN116769218B (zh) | 一种碳酸氢钠的改性方法及其应用 | |
| CN115651161B (zh) | 一种全水开孔硬质聚氨酯泡沫及其制备方法 | |
| JP2021004323A (ja) | エチレン・プロピレン・ジエンゴム発泡体、及びその製造方法 | |
| WO2021243652A1 (zh) | 环保型导热聚氨酯泡棉及其制备方法、及胶带 | |
| CN114672062B (zh) | 改性发泡剂及微孔发泡的苯乙烯类热塑性弹性体 | |
| CN112876743A (zh) | 硫化促进剂、环保型胶乳海绵、制备方法及应用 | |
| CN103589010B (zh) | 低面密度高拉伸强度的微孔吸波材料及其制备方法 | |
| CN117534895A (zh) | 一种气压支撑的eva化学发泡鞋底材料及其制备方法 | |
| US4696776A (en) | Method of producing polyurethane foams for low stress encapsulation | |
| CN115179636A (zh) | 一种汽车用电池隔热罩及其加工工艺 | |
| CN113462003A (zh) | 一种用于膨胀橡胶低温分解的发泡剂复合物及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |