CN109627768A - A kind of thermoplastic dynamic vulcanized silicon rubber of high-flexibility and preparation method thereof - Google Patents
A kind of thermoplastic dynamic vulcanized silicon rubber of high-flexibility and preparation method thereof Download PDFInfo
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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
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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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
- 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
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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
- 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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/05—Polymer mixtures characterised by other features containing polymer components which can react with one another
Abstract
The invention discloses thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility and preparation method thereof.This thermoplastic dynamic vulcanized silicon rubber of high-flexibility is made of raw material below: hydrogenated styrene-butadiene block copolymer, silicon rubber gross rubber, plasticizer, crosslinking agent, compatilizer, catalyst.A kind of method that the thermoplastic dynamic vulcanized silicon rubber of high-flexibility is prepared by dynamic vulcanization is also disclosed simultaneously.The preparation-obtained thermoplastic dynamic vulcanized silicon rubber of high-flexibility of the present invention has the characteristics such as high-flexibility, recyclable, comfortable feel, is widely portable to the fields such as electronic apparatus, wire rod, sports equipment.
Description
Technical field
The present invention relates to thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility and preparation method thereof.
Background technique
Dynamic vulcanization is a kind of emerging rubber curing techniques, be by unvulcanized rubber under high shear forces with thermoplastic
Property the common melt blending of material, while be added vulcanizing agent make its vulcanize process.In this process, heat cured rubber phase
(dispersed phase) is evenly dispersed in thermoplastic material (continuous phase) with a certain particle size range, while rubber phase particles are completed to hand over
Connection, finally obtains thermoplastic dynamic perduren (TPV).The maximum feature of dynamic vulcanization is by this as heat cured rubber phase
It is carried in thermoplastic material, to thermoset rubber and thermoplastic plastic properties be combined, while convenient for material
Processing and recycling.
Hydrogenated styrene-butadiene block copolymer (SEBS) is using polystyrene as end segment, with polybutadiene plus hydrogen
Obtained ethylene-butene copolymer is the linear tri-block copolymer of intermediate elastic block.SEBS has controllability abundant, can
Hardness is made and being blended with white oil, polyolefin etc. in the material of shore 0-95A, at the same have excellent processability,
Resistance to ag(e)ing, temperature tolerance etc..
Silicon rubber refers to that main chain is alternately made of silicon and oxygen atom, and the rubber there are two organic group, silicon are connected on silicon atom
Rubber feel is splendid, good weatherability, and stable mechanical property can be kept between -40-200 DEG C, and keeps certain toughness, returns
Elasticity and hardness.The silicon rubber overwhelming majority currently on the market is heat-curable silicone rubber, and complex manufacturing technology, energy consumption is high, and not
Conducive to recycling, the application range of silicon rubber is limited.
In the prior art, CN102924900A discloses a kind of method of thermoplastic elastomer (TPE), is added in SEBS big
The oily hardness to reduce material of amount filling, the processing method used is simple blend.This and high-flexibility thermoplasticity of the invention
Dynamic vulcanization silicon rubber has essential distinction.US4500688, CN106751736A are prepared for by different dynamic vulcanization systems
TPU/ silicon rubber thermoplastic elastomer solves above-described subproblem, but the hardness of the product obtained by it is in shore
Between 50-70A, it is far from reaching the hardness range of silicon rubber.It, can not be by normal but since the oil absorption of silicon rubber is poor
The filling technical white oil class softening agent of rule reduces the hardness of silicon rubber, therefore, how to reduce the hardness of thermoplasticity silicon rubber
To the general character problem that 50A or less has been in industry.CN101597378A provides a kind of preparation side of thermoplastic vulcanizates
Method, the hardness of composite material can be reduced by referring to be added softening agent, but it does not mention silicon rubber and SEBS in the present invention
Dynamic vulcanization, meanwhile, the hardness of thermoplastic vulcanizates obtained is all in 60A or more.
Summary of the invention
In view of the deficiencies of the prior art, it the purpose of the present invention is using dynamic vulcanization method, provides a kind of with highly-flexible
Degree, recyclable, thermoplastic dynamic vulcanized silicon rubber of high-flexibility of excellent in mechanical performance and preparation method thereof.In order to which Gao Rou is made
The thermoplastic dynamic vulcanized silicon rubber of softness, while the problems such as oil-filled excessive and bleed, layering of generation is avoided, the present invention will
SEBS and silicon rubber combine, and have the thermoplastic dynamic vulcanized silicon rubber of high-flexibility characteristic by dynamic vulcanization preparation,
Obtained product has the sliding dry and comfortable feel of silk, and hardness has excellent mechanical property up to 20~50A of shore.
The technical solution used in the present invention is:
A kind of thermoplastic dynamic vulcanized silicon rubber of high-flexibility, is made of: hydrogenated styrene-the raw material of following mass parts
10~30 parts of butadiene block copolymer (SEBS), 30~60 parts of silicon rubber gross rubber, 10~60 parts of plasticizer, crosslinking agent 1~5
Part, 5~20 parts of compatilizer, 0.01~0.5 part of catalyst.
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, hydrogenated styrene-butadiene block copolymer
The mass content of middle styrene is 25%~45%.
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, silicon rubber gross rubber is to mend by white carbon black
Strong methyl vinyl silicone rubber (or being Methyl-ethylenvinyl gum)；It is further preferred that methyl vinyl silicon kautschuk
Method through white carbon black reinforcement is vapor phase method or the precipitation method.
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, the vinyl mole in silicon rubber gross rubber
Content is 0.04%~0.5%.
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, plasticizer be technical white oil, naphthenic oil, oneself
At least one of diethyl adipate, dioctyl adipate, diethyl phosphate, triethyl phosphate, tributyl phosphate.
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, crosslinking agent is the siloxanes containing Si -- H bond；
It is further preferred that crosslinking agent is containing hydrogen silicone oil, the molar content of Si -- H bond is 0.4%~2% in crosslinking agent.
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, compatilizer is ethylene acrylic acid co polymer
(EAA), at least one of ethylene methyl acrylate copolymer (EMA), ethylene-vinyl acetate copolymer (EVA).
Preferably, in the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, catalyst is platinum-type catalyst；Further
, platinum-type catalyst is selected from metal platinum, platinum black, platinum loaded catalyst or contains platinum alloy.
The preparation method of this thermoplastic dynamic vulcanized silicon rubber of high-flexibility, comprising the following steps:
1) in mixer or extruder, by hydrogenated styrene-butadiene block copolymer, silicon rubber gross rubber, toughening
Agent, crosslinking agent and compatilizer melt blending squeeze out, and are granulated, obtain pre-composition；
2) pre-composition is mixed with catalyst, adds twin-screw extrude and carries out dynamic vulcanization reaction, squeezed out, is granulated,
Obtain the thermoplastic dynamic vulcanized silicon rubber of high-flexibility.
Preferably, in the preparation method step 1) of the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, melt blending
Technological parameter is as follows: temperature is 160 DEG C~200 DEG C, and the time is 3min~10min, and revolving speed is 30r/min~100r/min.
Preferably, in the preparation method step 2) of the thermoplastic dynamic vulcanized silicon rubber of this high-flexibility, twin-screw extrusion
The technological parameter of machine is as follows: processing temperature is 170 DEG C~210 DEG C, and screw speed is 200r/min~320r/min, dynamic vulcanization
Reaction time is 1min~4min.
The beneficial effects of the present invention are:
The preparation-obtained thermoplastic dynamic vulcanized silicon rubber of high-flexibility of the present invention has high-flexibility, recyclable, hand
Feel the characteristics such as comfortable, is widely portable to the fields such as electronic apparatus, wire rod, sports equipment.
Compared with prior art, the present invention has the advantage that
1) present invention realizes silicon rubber in SEBS under the shear at high temperature effect of extrusion process by dynamic vulcanization technology
Dynamic crosslinking in melt realizes the thermodynamics phase of the biggish SEBS of polarity spectrum and silicon rubber by the addition of compatilizer
Hold, so that the thermoplastic dynamic vulcanized silicon rubber of high-flexibility be made, for hardness up to 20~50A of shore, tensile strength is reachable
10MPa or more.
2) raw material used in the present invention and process equipment are all the common raw material of industry and equipment, easy to use, cost
It is cheap, it can be achieved that large-scale industrial production, and it is solvent-free, without toxic volatile gaseous contamination, meet environment protection requirement, it is great
Realistic meaning.
Specific embodiment
The contents of the present invention are described in further detail below by way of specific embodiment, following embodiment cannot
It is not understood as limitation of the scope of the invention.Raw materials/equipment used in embodiment unless otherwise specified, can be from routine business
Approach obtains.The detection method of Silicone Rubber parameter is standard method of test well known in the art unless otherwise instructed.
Examples 1 to 3 and comparative example 1
The silicon rubber of Examples 1 to 3 and comparative example 1 composition is shown in Table 1, and composition described in table 1 is mass parts.
The silicon rubber of 1 Examples 1 to 3 of table and comparative example 1 composition
| Title | SEBS | Silicon rubber gross rubber | Compatilizer | Crosslinking agent | Catalyst | Technical white oil |
| Embodiment 1 | 30 | 60 | 5 | 2.5 | 0.05 | 10 |
| Embodiment 2 | 20 | 60 | 5 | 2.5 | 0.05 | 20 |
| Embodiment 3 | 10 | 60 | 5 | 2.5 | 0.05 | 30 |
| Comparative example 1 | 10 | 60 | 5 | 0 | 0 | 30 |
The thermoplastic dynamic vulcanized silicon rubber of the high-flexibility of Examples 1 to 3 the preparation method is as follows:
Step 1) SEBS, silicon rubber gross rubber, compatilizer, crosslinking agent, the technical white oil in formula shown in table 1 are added
Into mixer, temperature is set as 160 DEG C, revolving speed 100rpm, mixing time 10min, and extruding pelletization obtains pre-composition.Implement
SEBS used in example 1~3 is the 6151 of platform rubber, and silicon rubber gross rubber is the EN-5150A of Dong Jue organosilicon company, compatilizer
For EVA, crosslinking agent is the containing hydrogen silicone oil of Dow Corning Corporation, and model JHF-901, platinum catalyst is the RD7 platinum of Dow Corning Corporation
Au catalyst.
Step 2) by the catalyst platinum in formula shown in the resulting pre-composition addition table 1 of step 1, it is added after mixing
Double screw extruder, 190 DEG C, screw speed 250rpm of temperature setting, progress dynamic vulcanization reaction, reaction time 2min,
Extruding pelletization obtains the thermoplastic dynamic vulcanized silicon rubber of high-flexibility.Obtained thermoplastic dynamic vulcanized silicon rubber appearance uniform,
Comfortable feel.
The silicon rubber of comparative example 1 the preparation method is as follows:
According to the technological parameter of Examples 1 to 3, but there is no crosslinking agent and catalyst is added (i.e. using non-dynamic sulphur
Change method), it prepared by formula in table 1, obtains sample, obtained sample has bleed, lamination.
The performance parameter of Examples 1 to 3 and comparative example 1 is shown in Table 2.
The Silicone Rubber parameter of 2 Examples 1 to 3 of table and comparative example 1
By comparing it is found that the properties of the Examples 1 to 3 prepared by dynamic vulcanization are all substantially better than comparison
Example 1.Embodiment 4~6 and comparative example 2
The silicon rubber of embodiment 4~6 and comparative example 2 composition is shown in Table 3, and composition described in table 3 is mass parts.
The silicon rubber of 3 embodiment 4~6 of table and comparative example 2 composition
The thermoplastic dynamic vulcanized silicon rubber of the high-flexibility of embodiment 4~6 the preparation method is as follows:
Step 1) SEBS, silicon rubber gross rubber, compatilizer, crosslinking agent, the plasticizer in formula shown in table 3 are added to
In mixer, temperature is set as 200 DEG C, revolving speed 30rpm, mixing time 3min, and extruding pelletization obtains pre-composition.Embodiment 4
SEBS used in~6 is the 6151 of platform rubber, and silicon rubber gross rubber is the EN-8151 of Dong Jue organosilicon company, and compatilizer is second
Alkene acrylic copolymer (EAA), crosslinking agent are the containing hydrogen silicone oil of Dow Corning Corporation, and model JHF-901, platinum catalyst is road health
The RD7 platinum catalyst of Ning company.
Step 2) by the catalyst platinum in formula shown in the resulting pre-composition addition table 3 of step 1, it is added after mixing
Double screw extruder, temperature set 200 DEG C, screw speed 300rpm, carry out dynamic vulcanization reaction, and reaction time 3min is squeezed
It is granulated out and obtains the thermoplastic dynamic vulcanized silicon rubber of high-flexibility.Obtained thermoplastic dynamic vulcanized silicon rubber appearance uniform,
Comfortable feel.
The silicon rubber of comparative example 2 the preparation method is as follows:
According to the technological parameter of embodiment 4~6, but there is no compatilizer is added, prepared by formula in table 3, obtained
To sample, obtained sample surfaces have bleed phenomenon.
The performance parameter of embodiment 4~6 and comparative example 2 is shown in Table 4.
The Silicone Rubber parameter of table 4 embodiment 4~6 and comparative example 2
By comparison it is found that the properties of the embodiment 4~6 prepared after compatilizer by dynamic vulcanization are added all
It is substantially better than comparative example 2.
Embodiment 7~10 and comparative example 3
The silicon rubber of embodiment 7~10 and comparative example 3 composition is shown in Table 5, and composition described in table 5 is mass parts.
The silicon rubber of 5 embodiment 7~10 of table and comparative example 3 composition
| Title | SEBS | Silicon rubber gross rubber | Compatilizer | Crosslinking agent | Catalyst | Technical white oil |
| Embodiment 7 | 30 | 60 | 5 | 1 | 0.2 | 20 |
| Embodiment 8 | 30 | 50 | 5 | 1 | 0.2 | 30 |
| Embodiment 9 | 30 | 40 | 5 | 1 | 0.2 | 40 |
| Embodiment 10 | 30 | 30 | 5 | 1 | 0.2 | 60 |
| Comparative example 3 | 30 | 30 | 5 | 0 | 0 | 60 |
The thermoplastic dynamic vulcanized silicon rubber of the high-flexibility of embodiment 7~10 the preparation method is as follows:
Step 1) SEBS, silicon rubber gross rubber, compatilizer, crosslinking agent, the plasticizer in formula shown in table 5 are added to
In mixer, temperature is set as 190 DEG C, revolving speed 80rpm, mixing time 4min, and extruding pelletization obtains pre-composition.Embodiment 7
SEBS used in~10 is the 6151 of Tai Xiang company, and silicon rubber gross rubber is the EN-5150A of Dong Jue organosilicon company, compatible
Agent is EMA, and crosslinking agent is the containing hydrogen silicone oil of Dow Corning Corporation, and model JHF-901, platinum catalyst is the RD7 of Dow Corning Corporation
Platinum catalyst.
Step 2) by the catalyst platinum in formula shown in the resulting pre-composition addition table 5 of step 1, it is added after mixing
Double screw extruder, temperature set 210 DEG C, screw speed 320rpm, carry out dynamic vulcanization reaction, and reaction time 1min is squeezed
It is granulated out and obtains the thermoplastic dynamic vulcanized silicon rubber of high-flexibility.Obtained thermoplastic dynamic vulcanized silicon rubber appearance uniform,
Comfortable feel.
The silicon rubber of comparative example 3 the preparation method is as follows:
Step 1) technological parameter according to embodiment 7~10, will in table 5 formula prepared it is (in formula not crosslinking
Agent and catalyst use non-dynamic vulcanization process), obtain pre-composition.
Step 2) pre-composition in step 1 is subjected to simple blend in double screw extruder, temperature sets 210 DEG C,
Screw speed is 320rpm, and extruding pelletization obtains sample, the greasy viscous hand of obtained sample surfaces, layering.
The performance parameter of embodiment 7~10 and comparative example 3 is shown in Table 6.
The Silicone Rubber parameter of table 6 embodiment 7~10 and comparative example 3
By comparison it is found that the properties of the embodiment 7~10 prepared by dynamic vulcanization are all substantially better than pair
Ratio 3.Embodiment 11~13 and comparative example 4
The silicon rubber of embodiment 11~13 and comparative example 4 composition is shown in Table 7, and composition described in table 7 is mass parts.
The silicon rubber of 7 embodiment 11~13 of table and comparative example 4 composition
The thermoplastic dynamic vulcanized silicon rubber of the high-flexibility of embodiment 11~13 the preparation method is as follows:
Step 1) SEBS, silicon rubber gross rubber, compatilizer, crosslinking agent, the plasticizer in formula shown in table 7 are added to
In mixer, temperature is set as 160 DEG C, revolving speed 80rpm, mixing time 3min, and extruding pelletization obtains pre-composition.Embodiment 11
SEBS used in~13 is the WHT-8285 of Wan Hua chemical company, and silicon rubber gross rubber is the EN- of Dong Jue organosilicon company
5150A, compatilizer EMA, crosslinking agent are the containing hydrogen silicone oil of Dow Corning Corporation, and model JHF-901, platinum catalyst is DOW CORNING
The RD7 platinum catalyst of company.
Step 2) by the catalyst platinum in formula shown in the resulting pre-composition addition table 7 of step 1, it is added after mixing
Double screw extruder, temperature set 170 DEG C, screw speed 200rpm, carry out dynamic vulcanization reaction, and reaction time 4min is squeezed
It is granulated out and obtains the thermoplastic dynamic vulcanized silicon rubber of high-flexibility.Obtained thermoplastic dynamic vulcanized silicon rubber appearance uniform,
Comfortable feel.
The silicon rubber of comparative example 4 the preparation method is as follows:
Step 1) technological parameter according to embodiment 11~13, but (used there is no crosslinking agent and catalyst is added
Non-dynamic vulcanization process), it prepared by formula in table 7, obtains pre-composition.
Step 2) pre-composition in step 1 is subjected to blending extrusion in double screw extruder, temperature sets 170 DEG C,
Screw speed is 200rpm, and extruding pelletization obtains sample, and obtained sample has bleed, lamination.
The performance parameter of embodiment 11~13 and comparative example 4 is shown in Table 8.
The Silicone Rubber parameter of table 8 embodiment 11~13 and comparative example 4
By comparison it is found that carrying out the embodiment 11~13 of dynamic vulcanization preparation using different crosslinking agents and catalyst ratio
Properties be all substantially better than comparative example 4.
Claims (10)
1. a kind of thermoplastic dynamic vulcanized silicon rubber of high-flexibility, it is characterised in that: be made of the raw material of following mass parts: hydrogen
Change 10~30 parts of styrene-butadiene block copolymer, 30~60 parts of silicon rubber gross rubber, 10~60 parts of plasticizer, crosslinking agent 1
~5 parts, 5~20 parts of compatilizer, 0.01~0.5 part of catalyst.
2. the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 1, it is characterised in that: hydrogenation of benzene second
The mass content of styrene is 25%~45% in alkene-butadiene block copolymer.
3. the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 1, it is characterised in that: silicon rubber is mixed
Refining glue is the methyl vinyl silicone rubber by white carbon black reinforcement.
4. the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 1, it is characterised in that: plasticizer is
Technical white oil, naphthenic oil, diethylene adipate, dioctyl adipate, diethyl phosphate, triethyl phosphate, in tributyl phosphate
At least one.
5. the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 1, it is characterised in that: crosslinking agent is
Siloxanes containing Si -- H bond.
6. the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 1, it is characterised in that: compatilizer is
At least one of ethylene acrylic acid co polymer, ethylene methyl acrylate copolymer, ethylene-vinyl acetate copolymer.
7. the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 1, it is characterised in that: catalyst is
Platinum-type catalyst.
8. a kind of any one of claim 1~7 preparation method of the thermoplastic dynamic vulcanized silicon rubber of high-flexibility, feature
It is: the following steps are included:
1) in mixer or extruder, by hydrogenated styrene-butadiene block copolymer, silicon rubber gross rubber, toughener, friendship
Join agent and compatilizer melt blending, squeeze out, is granulated, obtains pre-composition；
2) pre-composition is mixed with catalyst, adds twin-screw extrude and carries out dynamic vulcanization reaction, squeezed out, be granulated, obtain
The thermoplastic dynamic vulcanized silicon rubber of high-flexibility.
9. the preparation method of the thermoplastic dynamic vulcanized silicon rubber of a kind of high-flexibility according to claim 8, it is characterised in that:
In step 1), the technological parameter of melt blending is as follows: temperature is 160 DEG C~200 DEG C, and the time is 3min~10min, and revolving speed is
30r/min~100r/min.
10. a kind of preparation method of the thermoplastic dynamic vulcanized silicon rubber of high-flexibility, feature exist according to claim 8
In: in step 2), the technological parameter of double screw extruder is as follows: processing temperature is 170 DEG C~210 DEG C, screw speed 200r/
Min~320r/min, dynamic vulcanization reaction time are 1min~4min.
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| CN110358243A (en) * | 2019-07-15 | 2019-10-22 | 东莞市兴茂橡塑科技有限公司 | A kind of soft elastic force glue material, preparation method and application resistant to high temperature |
| CN112341824A (en) * | 2020-11-30 | 2021-02-09 | 山东道恩高分子材料股份有限公司 | High-somatosensory-compatibility organic silicon thermoplastic vulcanized rubber and preparation method thereof |
| CN114316606A (en) * | 2021-12-31 | 2022-04-12 | 东莞市正安有机硅科技有限公司 | Polyolefin base material thermoplastic dynamic vulcanized silicone rubber particles and preparation method thereof |
| CN114891356A (en) * | 2022-06-23 | 2022-08-12 | 盛嘉伦橡塑(河源)有限公司 | Thermoplastic elastomer material and preparation method thereof |
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Application publication date: 20190416 |