CN107446359A - A kind of sulphurated siliastic and preparation method thereof - Google Patents
A kind of sulphurated siliastic and preparation method thereof Download PDFInfo
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- CN107446359A CN107446359A CN201710810104.2A CN201710810104A CN107446359A CN 107446359 A CN107446359 A CN 107446359A CN 201710810104 A CN201710810104 A CN 201710810104A CN 107446359 A CN107446359 A CN 107446359A
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- rubber
- white carbon
- silicones
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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
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
Abstract
The invention discloses a kind of sulphurated siliastic and preparation method thereof.It is made up of the raw material of following parts by weight：100 parts of Methyl-ethylenvinyl gum, 37 ~ 53 parts of white carbon, 2 ~ 8 parts of hydroxy silicon oil, 0.17 ~ 0.2 part of zinc stearate, 3 ~ 7 parts of silicones, 1 ~ 2 part of 2,5-dimethyl-2,5-bishexane.After above-mentioned formula and preparation method, it is reasonable due to being formulated, particularly using white carbon and silicones as supporting material, white carbon can increase the intensity of sulphurated siliastic as supporting material, silicones is made up of silica structure construction unit, three-dimensional cross-linked network structure can be formed after solidification, there is prominent weatherability and resistance to yellowing, the performance of silicon rubber can also be strengthened while can not only increasing other element impurities as reinforcing agent, in addition, rational technique is combined with so that while resilience reaches product demand, make its hardness, tearing strength and elongation at break change are less.
Description
Technical field
The present invention relates to a kind of technology of preparing of high-temperature silicon disulfide rubber, specifically a kind of sulphurated siliastic and its system
Preparation Method.
Background technology
High-temperature silicon disulfide rubber is the machine that has concurrently and the macromolecular material of inorganic in nature, has flexible network, silicon rubber
Because resilience is good, compression is relatively low, can be used as kitchen article, axle envelope circle, packing ring, nipple, sundries joint and office equipment
Deng application prospect is extensive；With the development of science and technology, higher requirement it is also proposed to the rebound performance of silicon rubber, but
Existing high resilience high-temperature silicon disulfide rubber, because the limitation of its formula and technique make it that rebound degree is still relatively low, and its
Hardness, tearing strength and elongation at break properties are poor, it is impossible to meet the specific demand of some products of in the market, thus, how
Existing technology is broken through, improves the rebound performance of high-temperature silicon disulfide rubber, the application for widening silicon rubber is a technology difficulty
Topic.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind to make its hard while resilience reaches product demand
Degree, tearing strength and elongation at break change less sulphurated siliastic and preparation method thereof.
In order to solve the above-mentioned technical problem, sulphurated siliastic of the invention, it is made up of the raw material of following parts by weight：
100 parts of Methyl-ethylenvinyl gum
37 ~ 53 parts of white carbon
2 ~ 8 parts of hydroxy silicon oil
0.17 ~ 0.2 part of zinc stearate
3 ~ 7 parts of silicones
1 ~ 2 part of 2,5-dimethyl-2,5-bishexane.
A kind of preparation method of above-mentioned sulphurated siliastic, above-mentioned raw materials are prepared according to following step：
A, by 100 parts of Methyl-ethylenvinyl gum and 0.17 ~ 0.2 part of zinc stearate in Z-shaped kneader cold refining 2-5 minutes；
B, 37 ~ 53 parts of white carbon, 3 ~ 7 parts of silicones and 2 ~ 8 parts of hydroxy silicon oil are added several times, after adding every time fully
Stirring, makes white carbon be well mixed with rubber；
C, 150-170 DEG C is warming up to after sizing material is kneaded and formed, heat refining 80-100 minutes, vacuumizes plastic emitting after 25-35 minutes；
D, sizing material is carried out on double roller cylinder opening rubber mixing machine thin logical, is then filtered on rubber strainer, obtain clean free from admixture
Silicon rubber；
E, by silicon rubber and the 2 of 1 ~ 2 part, 5-dimethyl-2,5-bishexane is well mixed on rubber mixing machine, in compression molding
Vulcanization is molded on machine.
In the step E, curing temperature for 170-180 DEG C, cure time for 10-20min.
It is reasonable due to being formulated after above-mentioned formula and preparation method, particularly using white carbon and silicones as benefit
Strong material, white carbon can increase the intensity of sulphurated siliastic as supporting material, and silicones is by silica structure structure list
What member was formed, three-dimensional cross-linked network structure can be formed after solidification, has prominent weatherability and resistance to yellowing, as reinforcing agent not only
The performance of silicon rubber can also be strengthened while other element impurities can not be increased, returning in addition, being combined with rational technique
While elasticity reaches product demand, make its hardness, tearing strength and elongation at break change less.
Embodiment
With reference to embodiment, sulphurated siliastic of the present invention and preparation method thereof is made further specifically
It is bright.
Embodiment one：
The preparation method of the silicon sulfide rubber of the present embodiment, raw material is prepared according to following step：
A, by 100 parts of Methyl-ethylenvinyl gum and 0.17 part of zinc stearate in Z-shaped kneader it is cold refining 2 minutes；
B, 37 parts of white carbon, 3 parts of silicones and 4 parts of hydroxy silicon oil are added several times, is sufficiently stirred, makes after adding every time
White carbon is well mixed with rubber；
C, 150 DEG C are warming up to after sizing material is kneaded and formed, heat refining 80 minutes, vacuumizes plastic emitting after 25 minutes；
D, sizing material is carried out on double roller cylinder opening rubber mixing machine thin logical, is then filtered on rubber strainer, obtain clean free from admixture
Silicon rubber；
E, silicon rubber is mixed with 1 part of 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane on opening rubber mixing machine
Uniformly, in being molded vulcanization on vulcanizing press, curing temperature for 170 DEG C, cure time for 10min.
Embodiment two：
The preparation method of the silicon sulfide rubber of the present embodiment, raw material is prepared according to following step：
A, by 100 parts of Methyl-ethylenvinyl gum and 0.19 part of zinc stearate in Z-shaped kneader it is cold refining 3 minutes；
B, 45 parts of white carbon, 5 parts of silicones and 5 parts of hydroxy silicon oil are added several times, is sufficiently stirred, makes after adding every time
White carbon is well mixed with rubber；
C, 160 DEG C are warming up to after sizing material is kneaded and formed, heat refining 90 minutes, vacuumizes plastic emitting after 30 minutes
D, sizing material is carried out on double roller cylinder opening rubber mixing machine thin logical, is then filtered on rubber strainer, obtain clean free from admixture
Silicon rubber；
E, silicon rubber and 1 part of 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane are mixed on opening rubber mixing machine
Close uniform, be molded vulcanization on vulcanizing press, curing temperature for 175 DEG C, cure time for 15min.
Embodiment three：
The preparation method of the silicon sulfide rubber of the present embodiment, raw material is prepared according to following step：
A, by 100 parts of Methyl-ethylenvinyl gum and 0.2 part of zinc stearate in Z-shaped kneader it is cold refining 3 minutes；
B, 53 parts of white carbon, 7 parts of silicones and 8 parts of hydroxy silicon oil are added several times, is sufficiently stirred, makes after adding every time
White carbon is well mixed with rubber；
C, 170 DEG C are warming up to after sizing material is kneaded and formed, heat refining 100 minutes, vacuumizes plastic emitting after 35 minutes；
D, sizing material is carried out on double roller cylinder opening rubber mixing machine thin logical, is then filtered on rubber strainer, obtain clean free from admixture
Silicon rubber；
E, silicon rubber and 2 parts of 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane are mixed on opening rubber mixing machine
Close it is uniform, in being molded vulcanization on vulcanizing press, curing temperature for 180 DEG C, cure time for 20min.
By it was verified that supporting material is white carbon and silicones, white carbon can make silicon sulfide as supporting material
Rubber intensity increase, but due to white carbon reinforcing effect clearly, for make the network hole of silicon rubber become greatly with increase
Add its rebound performance, part supporting material is replaced by the slightly worse silicones of reinforcing effect, and silicones is by silica structure structure list
What member was formed, three-dimensional cross-linked network structure can be formed after solidification, has prominent weatherability and resistance to yellowing, as reinforcing agent not only
The performance of silicon rubber can also be strengthened while other element impurities can not be increased, in addition, hydroxy silicon oil is constitution controller, it is stearic
Sour zinc is releasing agent, and what peroxide vulcanizing agent was selected is the nontoxic high temperature vulcanized effect good 2 that has no irritating odor, 5-
Dimethyl-2,5-bis(t-butylperoxy) hexane, its specific properties of product are as follows：
The present invention is tested according to national standard, it is as a result as follows：
| Test event | Unit | Test result | Testing standard |
| Shore hardness | HA | 49 | GB 531-83 |
| Tensile strength | MPa | 9.6 | GB 528-92 |
| Tension fracture elongation rate | % | 520 | GB 528-92 |
| Compression deformation rate | % | 27 | HG/T 2876-1997 |
| Rebound degree | % | 80 | GB/T 1681-2009 |
Test result confirms that the present invention solves key issue, and rebound degree reaches expected effects.
Claims (3)
1. a kind of sulphurated siliastic, it is characterised in that be made up of the raw material of following parts by weight：
100 parts of Methyl-ethylenvinyl gum
37 ~ 53 parts of white carbon
2 ~ 8 parts of hydroxy silicon oil
0.17 ~ 0.2 part of zinc stearate
3 ~ 7 parts of silicones
1 ~ 2 part of 2,5-dimethyl-2,5-bishexane.
A kind of 2. preparation method of sulphurated siliastic as claimed in claim 1, it is characterised in that：By above-mentioned raw materials according to following
The step of prepared：
A, by 100 parts of Methyl-ethylenvinyl gum and 0.17 ~ 0.2 part of zinc stearate in Z-shaped kneader cold refining 2-5 minutes；
B, 37 ~ 53 parts of white carbon, 3 ~ 7 parts of silicones and 2 ~ 8 parts of hydroxy silicon oil are added several times, after adding every time fully
Stirring, makes white carbon be well mixed with rubber；
C, 150-170 DEG C is warming up to after sizing material is kneaded and formed, heat refining 80-100 minutes, vacuumizes plastic emitting after 25-35 minutes；
D, sizing material is carried out on double roller cylinder opening rubber mixing machine thin logical, is then filtered on rubber strainer, obtain clean free from admixture
Silicon rubber；
E, by silicon rubber and the 2 of 1 ~ 2 part, 5-dimethyl-2,5-bishexane is well mixed on rubber mixing machine, in compression molding
Vulcanization is molded on machine.
3. according to the preparation method of the sulphurated siliastic described in claim 2, it is characterised in that：In the step E, curing temperature
For 170-180 DEG C, cure time for 10-20min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710810104.2A CN107446359A (en) | 2017-09-11 | 2017-09-11 | A kind of sulphurated siliastic and preparation method thereof |
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| CN201710810104.2A CN107446359A (en) | 2017-09-11 | 2017-09-11 | A kind of sulphurated siliastic and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396296A (en) * | 2019-07-29 | 2019-11-01 | 河南三创硅业有限公司 | A kind of hardness is 80A silica gel roll material and method |
| CN112570232A (en) * | 2020-11-13 | 2021-03-30 | 四川航天燎原科技有限公司 | Rapid curing method of vulcanized silicone rubber |
| CN113150556A (en) * | 2021-04-08 | 2021-07-23 | 苏州歌诗夫新材料有限公司 | Ultralow-hardness high-temperature vulcanized silicone rubber material and preparation method thereof |
| CN113621239A (en) * | 2021-08-18 | 2021-11-09 | 常州市诺普新材料有限公司 | Wear-resistant long-life organic silicon material and preparation method and application thereof |
| CN114410117A (en) * | 2021-12-31 | 2022-04-29 | 北京北化新橡特种材料科技股份有限公司 | Preparation method of environment-friendly silicon rubber sports floor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888121A (en) * | 2012-10-16 | 2013-01-23 | 江苏天辰硅材料有限公司 | High-resilience silicon rubber and preparation method thereof |
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2017
- 2017-09-11 CN CN201710810104.2A patent/CN107446359A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888121A (en) * | 2012-10-16 | 2013-01-23 | 江苏天辰硅材料有限公司 | High-resilience silicon rubber and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 宋波: "《塑料改性技术》", 31 October 2016, 中国纺织出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396296A (en) * | 2019-07-29 | 2019-11-01 | 河南三创硅业有限公司 | A kind of hardness is 80A silica gel roll material and method |
| CN112570232A (en) * | 2020-11-13 | 2021-03-30 | 四川航天燎原科技有限公司 | Rapid curing method of vulcanized silicone rubber |
| CN112570232B (en) * | 2020-11-13 | 2023-01-13 | 四川航天燎原科技有限公司 | Rapid curing method of vulcanized silicone rubber |
| CN113150556A (en) * | 2021-04-08 | 2021-07-23 | 苏州歌诗夫新材料有限公司 | Ultralow-hardness high-temperature vulcanized silicone rubber material and preparation method thereof |
| CN113621239A (en) * | 2021-08-18 | 2021-11-09 | 常州市诺普新材料有限公司 | Wear-resistant long-life organic silicon material and preparation method and application thereof |
| CN113621239B (en) * | 2021-08-18 | 2023-02-24 | 常州市诺普新材料有限公司 | Wear-resistant long-life organic silicon material and preparation method and application thereof |
| CN114410117A (en) * | 2021-12-31 | 2022-04-29 | 北京北化新橡特种材料科技股份有限公司 | Preparation method of environment-friendly silicon rubber sports floor |
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Application publication date: 20171208 |
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