CN112175394A - Silicone rubber elastomer composition - Google Patents
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- CN112175394A CN112175394A CN202011171158.7A CN202011171158A CN112175394A CN 112175394 A CN112175394 A CN 112175394A CN 202011171158 A CN202011171158 A CN 202011171158A CN 112175394 A CN112175394 A CN 112175394A
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 106
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 66
- 229920001971 elastomer Polymers 0.000 title claims abstract description 42
- 239000000806 elastomer Substances 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 title claims abstract description 26
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 239000007822 coupling agent Substances 0.000 claims abstract description 23
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 23
- 239000000314 lubricant Substances 0.000 claims abstract description 23
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 23
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 13
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000012744 reinforcing agent Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- -1 methyl vinyl phenyl Chemical group 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 229910021485 fumed silica Inorganic materials 0.000 claims description 8
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 7
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical group CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 5
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 5
- 229920002292 Nylon 6 Polymers 0.000 claims description 5
- 229920000305 Nylon 6,10 Polymers 0.000 claims description 5
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 5
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 229920005560 fluorosilicone rubber Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- ODMKGMMECQPAAL-UHFFFAOYSA-N 2,5-bis(butylperoxy)-2,5-dimethylhex-3-yne Chemical group CCCCOOC(C)(C)C#CC(C)(C)OOCCCC ODMKGMMECQPAAL-UHFFFAOYSA-N 0.000 claims description 2
- XMYJXSITMZVPFY-UHFFFAOYSA-N 2,5-bis(butylperoxy)-2,5-dimethylhexane Chemical compound CCCCOOC(C)(C)CCC(C)(C)OOCCCC XMYJXSITMZVPFY-UHFFFAOYSA-N 0.000 claims description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 1
- 239000002861 polymer material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical compound C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- MOSXLDGILGBOSZ-UHFFFAOYSA-N ethenyl-methyl-phenylsilicon Chemical compound C=C[Si](C)C1=CC=CC=C1 MOSXLDGILGBOSZ-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- 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
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to a silicone rubber elastomer composition, belonging to the field of high polymer materials. The silicone rubber elastomer composition comprises the following components in parts by weight: 75-90 parts of mixed silicon rubber, 35-55 parts of polyamide resin, 7-12 parts of hydrogenated rosin, 3-7 parts of nano silver, 0.5-2 parts of lubricant, 0.5-1.2 parts of catalyst, 0.8-1.5 parts of cross-linking agent, 0.5-1.2 parts of coupling agent and 0.2-0.6 part of antioxidant; the polyamide resin and the silicone rubber are blended, and the silicone rubber elastomer has good mechanical properties such as tensile strength and tear strength under the synergistic cooperation effect of the components, so that the technical problem of poor mechanical properties of the conventional silicone rubber elastomer is solved.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a silicone rubber elastomer composition.
Background
The elastic body is a high polymer material which can deform obviously under weak stress and can be quickly recovered to be close to the original state and size after the stress is relaxed. Elastomers are classified into two main categories, thermosetting elastomers and thermoplastic elastomers, depending on whether the elastomers can be plasticized or not.
The thermoplastic elastomer TPE/TPR, also called artificial rubber or synthetic rubber, is a high molecular material which shows rubber elasticity at normal temperature and can be plasticized and molded at high temperature. The thermoplastic elastomer has the excellent performances of high elasticity, aging resistance, oil resistance and the like of the traditional cross-linked vulcanized rubber, and has the characteristics of convenient processing and wide processing mode of common plastics. The thermoplastic elastomer can be produced by processing modes such as injection molding, extrusion, blow molding and the like, and the corners of the water gap can be directly used for the second time after being crushed, so that the processing process is simplified, and the processing cost is reduced; therefore, thermoplastic elastomers have become the latest material to replace conventional rubbers.
The silicone rubber elastomer has better high and low temperature resistance, but the existing silicone rubber elastomer has the problem of poorer mechanical properties such as tensile strength, tearing strength and the like.
Disclosure of Invention
The invention aims to solve the problem that the existing silicone rubber elastomer has poor mechanical properties such as tensile strength, tearing strength and the like.
In order to solve the technical problems, the invention provides a silicone rubber elastomer composition which comprises the following components in parts by weight: 75-90 parts of mixed silicon rubber, 35-55 parts of polyamide resin, 7-12 parts of hydrogenated rosin, 3-7 parts of nano silver, 0.5-2 parts of lubricant, 0.5-1.2 parts of catalyst, 0.8-1.5 parts of cross-linking agent, 0.5-1.2 parts of coupling agent and 0.2-0.6 part of antioxidant.
Preferably, the mixing silicone rubber comprises the following components in parts by weight: 30-48 parts of raw silicon rubber and 25-35 parts of reinforcing agent.
Preferably, the raw silicone rubber is one or more than two of hydroxyl-terminated silicone rubber, dimethyl silicone rubber, methyl vinyl phenyl silicone rubber and fluorosilicone rubber.
Preferably, the reinforcing agent is fumed silica and/or precipitated silica.
Preferably, the polyamide resin is one or more of polyamide-6, polyamide-66 and polyamide-610.
Preferably, the catalyst is chloroplatinic acid-isopropanol, chloroplatinic acid-tetramethyldivinyldisiloxane or chloroplatinic acid-diethyl phthalate.
Preferably, the particle size of the nano silver is 30-50 nm.
Preferably, the crosslinking agent is 2, 5-bis-butylperoxy-2, 5-dimethyl-3-hexyne, 2, 5-bis-butylperoxy-2, 5-dimethylhexane, or dicumyl peroxide.
Preferably, the coupling agent is vinyltriethoxysilane or vinyltrimethoxysilane.
Preferably, the lubricant is one or more of pentaerythritol ester, erucamide, silicone and EBS.
Compared with the prior art, the invention has the advantages that: the silicone rubber elastomer composition comprises the following components in parts by weight: 75-90 parts of mixed silicon rubber, 35-55 parts of polyamide resin, 7-12 parts of hydrogenated rosin, 3-7 parts of nano silver, 0.5-2 parts of lubricant, 0.5-1.2 parts of catalyst, 0.8-1.5 parts of cross-linking agent, 0.5-1.2 parts of coupling agent and 0.2-0.6 part of antioxidant; the polyamide resin and the silicone rubber are blended, and the silicone rubber elastomer has good mechanical properties such as tensile strength and tear strength under the synergistic cooperation effect of the components, so that the technical problem of poor mechanical properties of the conventional silicone rubber elastomer is solved.
Detailed Description
The specific embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 75-90 parts of mixed silicon rubber, 35-55 parts of polyamide resin, 7-12 parts of hydrogenated rosin, 3-7 parts of nano silver, 0.5-2 parts of lubricant, 0.5-1.2 parts of catalyst, 0.8-1.5 parts of cross-linking agent, 0.5-1.2 parts of coupling agent and 0.2-0.6 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: 30-48 parts of raw silicon rubber and 25-35 parts of reinforcing agent, wherein the raw silicon rubber is one or more of hydroxyl-terminated silicon rubber, dimethyl silicon rubber, methyl vinyl phenyl silicon rubber and fluorosilicone rubber, the reinforcing agent is fumed silica and/or precipitated silica, the polyamide resin is one or more of polyamide-6, polyamide-66 and polyamide-610, the catalyst is chloroplatinic acid-isopropanol, chloroplatinic acid-tetramethyl divinyl disiloxane or chloroplatinic acid-diethyl phthalate, the particle size of the nano silver is 30-50nm, the crosslinking agent is 2, 5-dual-tert-butylperoxy-2, 5-dimethyl-3-hexyne and 2, 5-dual-tert-butylperoxy-2, 5-dimethylhexane or dicumyl peroxide, the coupling agent is vinyl triethoxysilane or vinyl trimethoxy silane, and the lubricant is one or more of pentaerythritol ester, erucamide, silicone and EBS.
The preparation method of the silicone rubber elastomer in the embodiment is as follows:
(1) mixing the raw silicon rubber and the reinforcing agent according to the weight part ratio to obtain mixed silicon rubber; wherein the mixing temperature is 60-140 ℃, the mixing time is 0.2-2 h, and the rotating speed is 20-120 r/min;
(2) adding the mixed silicone rubber, the polyamide resin, the hydrogenated rosin, the nano silver, the lubricant, the catalyst, the crosslinking agent, the coupling agent and the antioxidant into a double-screw extruder according to the weight part ratio to perform dynamic vulcanization reaction, extruding and granulating to obtain a silicone rubber elastomer with a sliding crosslinking network; wherein the processing temperature of the double-screw extruder is 155-195 ℃, the screw rotating speed is 135-275 r/min, and the dynamic vulcanization time is 1-3.5 min.
The method for testing the performance of the silicone rubber elastomer obtained in the embodiment is as follows:
the tensile strength of the vulcanized silicone rubber was tested in accordance with GB/T528-1998;
the tear strength of the vulcanized silicone rubber was tested in accordance with GB/T529-1999.
The following examples, which specifically describe preferred silicone elastomer compositions of the present invention, illustrate the principles of the invention and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 75 parts of mixed silicon rubber, 35 parts of polyamide resin, 7 parts of hydrogenated rosin, 3 parts of nano-silver, 0.5 part of lubricant, 0.5 part of catalyst, 0.8 part of cross-linking agent, 0.5 part of coupling agent and 0.2 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: the silicon rubber comprises 30 parts of raw silicon rubber and 25 parts of reinforcing agent, wherein the raw silicon rubber is hydroxyl-terminated silicon rubber, the reinforcing agent is fumed silica, the polyamide resin is polyamide-6, the catalyst is chloroplatinic acid-isopropanol, the particle size of the nano silver is 30-50nm, the cross-linking agent is 2, 5-dual-tert-butylperoxy-2, 5-dimethyl-3-hexyne, the coupling agent is vinyl triethoxysilane, and the lubricant is pentaerythritol ester.
Example 2
The embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 90 parts of mixed silicon rubber, 55 parts of polyamide resin, 12 parts of hydrogenated rosin, 7 parts of nano-silver, 2 parts of lubricant, 1.2 parts of catalyst, 1.5 parts of cross-linking agent, 1.2 parts of coupling agent and 0.6 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: 48 parts of raw silicone rubber and 35 parts of reinforcing agent, wherein the raw silicone rubber is methyl vinyl phenyl silicone rubber, the reinforcing agent is precipitated white carbon black, the polyamide resin is polyamide 610, the catalyst is chloroplatinic acid-diethyl phthalate, the particle size of the nano silver is 30-50nm, the cross-linking agent is dicumyl peroxide, the coupling agent is vinyl trimethoxy silane, and the lubricant is silicone.
Example 3
The embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 80 parts of mixed silicon rubber, 45 parts of polyamide resin, 10 parts of hydrogenated rosin, 5 parts of nano-silver, 1.5 parts of lubricant, 0.8 part of catalyst, 1.2 parts of cross-linking agent, 0.8 part of coupling agent and 0.4 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: 40 parts of raw silicon rubber and 30 parts of reinforcing agent, wherein the raw silicon rubber is dimethyl silicon rubber, the reinforcing agent is fumed silica, the polyamide resin is polyamide-66, the catalyst is chloroplatinic acid-tetramethyl divinyl disiloxane, the particle size of the nano silver is 30-50nm, the cross-linking agent is 2, 5-dual-tert-butylperoxy-2, 5-dimethylhexane, the coupling agent is vinyl trimethoxy silane, and the lubricant is erucamide.
Example 4
The embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 75 parts of mixed silicon rubber, 35 parts of polyamide resin, 7 parts of hydrogenated rosin, 3 parts of nano-silver, 0.5 part of lubricant, 0.5 part of catalyst, 0.8 part of cross-linking agent, 0.5 part of coupling agent and 0.2 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: 48 parts of raw silicone rubber and 35 parts of reinforcing agent, wherein the raw silicone rubber is methyl vinyl phenyl silicone rubber, the reinforcing agent is precipitated white carbon black, the polyamide resin is polyamide 610, the catalyst is chloroplatinic acid-diethyl phthalate, the particle size of the nano silver is 30-50nm, the cross-linking agent is dicumyl peroxide, the coupling agent is vinyl trimethoxy silane, and the lubricant is silicone.
Example 5
The embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 90 parts of mixed silicon rubber, 55 parts of polyamide resin, 12 parts of hydrogenated rosin, 7 parts of nano-silver, 2 parts of lubricant, 1.2 parts of catalyst, 1.5 parts of cross-linking agent, 1.2 parts of coupling agent and 0.6 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: 40 parts of raw silicon rubber and 30 parts of reinforcing agent, wherein the raw silicon rubber is dimethyl silicon rubber, the reinforcing agent is fumed silica, the polyamide resin is polyamide-66, the catalyst is chloroplatinic acid-tetramethyl divinyl disiloxane, the particle size of the nano silver is 30-50nm, the cross-linking agent is 2, 5-dual-tert-butylperoxy-2, 5-dimethylhexane, the coupling agent is vinyl trimethoxy silane, and the lubricant is erucamide.
Example 6
The embodiment provides a silicone rubber elastomer composition, which comprises the following components in parts by weight: 80 parts of mixed silicon rubber, 45 parts of polyamide resin, 10 parts of hydrogenated rosin, 5 parts of nano-silver, 1.5 parts of lubricant, 0.8 part of catalyst, 1.2 parts of cross-linking agent, 0.8 part of coupling agent and 0.4 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: the silicon rubber comprises 30 parts of raw silicon rubber and 25 parts of reinforcing agent, wherein the raw silicon rubber is hydroxyl-terminated silicon rubber, the reinforcing agent is fumed silica, the polyamide resin is polyamide-6, the catalyst is chloroplatinic acid-isopropanol, the particle size of the nano silver is 30-50nm, the cross-linking agent is 2, 5-dual-tert-butylperoxy-2, 5-dimethyl-3-hexyne, the coupling agent is vinyl triethoxysilane, and the lubricant is pentaerythritol ester.
Comparative example 1
The comparative example provides a silicone rubber elastomer composition comprising the following components in parts by weight: 75 parts of mixed silicon rubber, 7 parts of hydrogenated rosin, 3 parts of nano silver, 0.5 part of lubricant, 0.5 part of catalyst, 0.8 part of cross-linking agent, 0.5 part of coupling agent and 0.2 part of antioxidant.
The mixing silicone rubber comprises the following components in parts by weight: the silicon rubber comprises 30 parts of raw silicon rubber and 25 parts of reinforcing agent, wherein the raw silicon rubber is hydroxyl-terminated silicon rubber, the reinforcing agent is fumed silica, the catalyst is chloroplatinic acid-isopropanol, the particle size of the nano silver is 30-50nm, the cross-linking agent is 2, 5-dual-tert-butylperoxy-2, 5-dimethyl-3-hexyne, the coupling agent is vinyl triethoxysilane, and the lubricant is pentaerythritol ester.
TABLE 1 results of the Performance test of the silicone rubber elastomers obtained in examples 1 to 6 and comparative example 1
| Detecting items | Tensile Strength (MPa) | Tear Strength (KN/m) |
| Example 1 | ≥4.8 | ≥11.26 |
| Example 2 | ≥5.6 | ≥12.57 |
| Example 3 | ≥5.1 | ≥10.21 |
| Example 4 | ≥4.7 | ≥9.89 |
| Example 5 | ≥5.2 | ≥10.54 |
| Example 6 | ≥5.3 | ≥11.26 |
| Comparative example 1 | ≥1.7 | ≥3.4 |
As can be seen from the above table, the silicone rubber elastomer of the present invention has high tensile strength and tear strength.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The silicone rubber elastomer composition is characterized by comprising the following components in parts by weight: 75-90 parts of mixed silicon rubber, 35-55 parts of polyamide resin, 7-12 parts of hydrogenated rosin, 3-7 parts of nano silver, 0.5-2 parts of lubricant, 0.5-1.2 parts of catalyst, 0.8-1.5 parts of cross-linking agent, 0.5-1.2 parts of coupling agent and 0.2-0.6 part of antioxidant.
2. The silicone rubber elastomer composition according to claim 1, wherein the compounded silicone rubber comprises the following components in parts by weight: 30-48 parts of raw silicon rubber and 25-35 parts of reinforcing agent.
3. The silicone rubber elastomer composition according to claim 2, wherein the raw silicone rubber is one or more of a hydroxyl terminated silicone rubber, a dimethyl silicone rubber, a methyl vinyl phenyl silicone rubber, and a fluorosilicone rubber.
4. The silicone rubber elastomer composition according to claim 2, wherein the reinforcing agent is fumed silica and/or precipitated silica.
5. The silicone rubber elastomer composition according to claim 1, wherein the polyamide resin is one or more of polyamide-6, polyamide-66, and polyamide-610.
6. The silicone rubber elastomer composition according to claim 1, wherein the catalyst is chloroplatinic acid-isopropanol, chloroplatinic acid-tetramethyldivinyldisiloxane, or chloroplatinic acid-diethyl phthalate.
7. The silicone rubber elastomer composition according to claim 1, wherein the nano silver has a particle size of 30 to 50 nm.
8. The silicone rubber elastomer composition according to claim 1, wherein the crosslinking agent is 2, 5-bis-butylperoxy-2, 5-dimethyl-3-hexyne, 2, 5-bis-butylperoxy-2, 5-dimethylhexane, or dicumyl peroxide.
9. The silicone rubber elastomer composition according to claim 1, wherein the coupling agent is vinyltriethoxysilane or vinyltrimethoxysilane.
10. The silicone rubber elastomer composition according to claim 1, wherein the lubricant is one or more of pentaerythritol ester, erucamide, silicone, and EBS.
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2020
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| CN103102692A (en) * | 2013-02-21 | 2013-05-15 | 江苏顶塑实业有限公司 | Halogen-free flame retardant silicone rubber/modified polyamide thermoplastic elastomer and preparation method thereof |
| CN105885423A (en) * | 2016-05-25 | 2016-08-24 | 北京化工大学 | Method for preparing silicone rubber/polyamide thermoplastic vulcanized rubber by virtue of reactive compatibilization |
| CN109467939A (en) * | 2018-11-27 | 2019-03-15 | 东莞市朗晟硅材料有限公司 | A kind of high rebound silicon rubber and preparation method thereof |
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