CN106398229A - High-elongation silica gel and preparation method thereof - Google Patents
High-elongation silica gel and preparation method thereof Download PDFInfo
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- CN106398229A CN106398229A CN201610827152.8A CN201610827152A CN106398229A CN 106398229 A CN106398229 A CN 106398229A CN 201610827152 A CN201610827152 A CN 201610827152A CN 106398229 A CN106398229 A CN 106398229A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
Abstract
The invention relates to the technical field of silica gel, in particular to high-elongation silica gel and a preparation method thereof. The high-elongation silica gel is prepared from raw materials in parts by weight as follows: 90-110 parts of silicone rubber, 48-52 parts of a reinforcing agent, 3.8-4.6 parts of a silane aid, 4.0-4.4 parts of filler, 0.15-0.25 parts of a lubricant and 0.5-1.5 parts of a vulcanizing agent. The high-elongation silica gel has higher elongation and excellent overall performance.
Description
Technical field
The present invention relates to silica gel technical field is and in particular to a kind of high elongation rate silica gel and preparation method thereof.
Background technology
In the prior art, silica gel materials, due to its superior performance, are widely used in industry-by-industry, but common silicon
Collagen material percentage elongation is relatively low, thus being restricted in some field applications requiring percentage elongation higher.
Content of the invention
In order to overcome shortcoming and defect present in prior art, it is an object of the invention to provide a kind of high elongation rate silicon
Glue, this high elongation rate silica gel has higher percentage elongation, excellent combination property.
Another object of the present invention is to providing a kind of preparation method of high elongation rate silica gel, this preparation method technique letter
Single, convenient operation and control, steady quality, production efficiency is high, and low production cost can large-scale industrial production.
The purpose of the present invention is achieved through the following technical solutions：A kind of high elongation rate silica gel, former including following weight portion
Material：
Silicone rubber 90-110 part
Reinforcing agent 48-52 part
Silane adjuvant 3.8-4.6 part
Lubricant 0.15-0.25 part
Vulcanizing agent 0.5-1.5 part.
The present invention is by adopting above-mentioned raw materials, and strictly controls the weight proportion of each raw material, prepared high elongation rate silica gel
There is higher percentage elongation, excellent combination property.
Preferably, described silicone rubber is by methyl vinyl silicone rubber A, methyl vinyl silicone rubber B and methyl ethylene
Silicone rubber C compares 77-86 with weight：10-20：The mixture of 3-4 composition；Wherein, the contents of ethylene of methyl vinyl silicone rubber A
For 0.06-0.10%, molecular weight is 64-66 ten thousand；The contents of ethylene of methyl vinyl silicone rubber B is 0.21-0.25%, molecular weight
For 64-66 ten thousand；The contents of ethylene of methyl vinyl silicone rubber C is 4.5-5.5%, and molecular weight is 65-67 ten thousand.
It is 0.06-0.10% that the present invention passes through using contents of ethylene, and molecular weight is the methyl ethylene silicon rubber of 64-66 ten thousand
Glue A, it has high molecular, and main chain is longer, and intermolecular force is big, can effectively improve the mechanical strength of silicone rubber；The present invention
By being 0.21-0.25% using contents of ethylene, molecular weight is the methyl vinyl silicone rubber B of 64-66 ten thousand, and it has high score
Son amount, main chain is longer, and intermolecular force is big, can effectively improve the mechanical strength of silicone rubber；The present invention is by adopting vinyl
Content is 4.5-5.5%, and molecular weight is the methyl vinyl silicone rubber C of 65-67 ten thousand, and it has low-molecular-weight, with high molecular life
Glue cooperation can improve silica gel stripping result.
The present invention by silicone rubber is used as using the methyl vinyl silicone rubber of three kinds of differing ethylenes and content and molecular weight,
And control its weight than for 77-86：10-20：3-4, prepared high elongation rate silica gel has higher intensity and hardness.
Preferably, described reinforcing agent is to compare 43-47 by precipitated silica and gas-phase silica with weight:It is mixed that 4-6 forms
Compound.
The present invention is by being used as reinforcing agent compounding use using precipitated silica and gas-phase silica, and controls its weight ratio
For 43-47:4-6, can improve the intensity of silicone rubber.
Preferably, the particle diameter of described precipitated silica is 10-50nm, and specific surface area is 160-180m2/g.
It is 10-50nm that the present invention passes through using particle diameter, and specific surface area is 160-180m2The precipitated silica of/g, its particle diameter
Little, it is dispersed in the mechanical strength that can improve silicone rubber in silicone rubber.
Preferably, the particle diameter of described gas-phase silica is 10-50nm, and specific surface area is 200-300m2/g.
The present invention pass through using particle diameter be 10-50nm, specific surface area be 200-300m2The gas-phase silica of/g, its particle diameter
Little, it is dispersed in the mechanical strength that can improve silicone rubber in silicone rubber.
Preferably, described silane adjuvant is with weight by hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane
Compare 2.0-2.4:1.8-2.2 the mixture of composition.
The present invention is by adopting hydroxyl-terminated injecting two methyl siloxane, it can be avoided that knot in storage placement process for the silicone rubber
The generation of structure phenomenon；The present invention, by adopting dimethyldiethoxysilane, energy effective process white carbon surface, reaches infiltration
Effect.
The present invention is multiple by being used as silane adjuvant using hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane
Join use, and control its weight than for 2.0-2.4:1.8-2.2, prepared fluorinated silicone rubber gross rubber has higher intensity and adds
Work performance.
Preferably, described lubricant is to compare 2-4 by zinc stearate and stearic acid with weight:The mixture of 1 composition.
The present invention is by being used as lubricant compounding use using zinc stearate and stearic acid, and controls its weight than for 2-4:
1, the demolding performace of silicone rubber can be effectively improved.
Preferably, described vulcanizing agent is 2,5- dimethyl -2,5- bis-（Tert-butyl hydroperoxide）Hexane.
The present invention passes through using 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane as vulcanizing agent, imitate by its sulfuration
Really good, prepared high elongation rate silica gel has higher percentage elongation, excellent combination property.
A kind of preparation method of high elongation rate silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 15-25min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 3-5h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 1.5-2.5h, use
150 mesh filter screens filter, and obtain glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
The preparation method of the present invention is matched with the raw material of the present invention, by the strict charging sequence controlling each raw material, energy
Improve the percentage elongation of high elongation rate silica gel further.
Preferably, described step（4）In, the technological parameter of intensification refining glue is：After temperature rises to 100-120 DEG C, mediate 40-
80min, then evacuation 40-80min, vacuum is in -0.07～-0.11Mpa.
The present invention passes through the strict temperature controlling intensification refining glue and vacuum, and prepared high elongation rate silica gel has higher
Percentage elongation.
Described step（6）In, curing temperature is 160-180 DEG C, and cure time is 8-12min.
The present invention passes through strict control curing temperature and cure time, good, the prepared high elongation rate silica gel of its cure efficiency
There is higher percentage elongation, excellent combination property.
The beneficial effects of the present invention is：The high elongation rate silica gel of the present invention has higher percentage elongation, and combination property is excellent
Different.
The preparation method process is simple of the present invention, convenient operation and control, steady quality, production efficiency is high, low production cost,
Can large-scale industrial production.
Specific embodiment
For the ease of the understanding of those skilled in the art, with reference to embodiment, the present invention is further illustrated, real
The content that the mode of applying refers to not limitation of the invention.
Embodiment 1
A kind of high elongation rate silica gel, including the raw material of following weight portion：
90 parts of silicone rubber
48 parts of reinforcing agent
3.8 parts of silane adjuvant
0.15 part of lubricant
0.5 part of vulcanizing agent.
Described silicone rubber is by methyl vinyl silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C
Compare 77 with weight：10：The mixture of 3 compositions；Wherein, the contents of ethylene of methyl vinyl silicone rubber A is 0.06%, molecular weight
For 640,000；The contents of ethylene of methyl vinyl silicone rubber B is 0.21%, and molecular weight is 640,000；Methyl vinyl silicone rubber C's
Contents of ethylene is 4.5%, and molecular weight is 650,000.
Described reinforcing agent is to compare 43 by precipitated silica and gas-phase silica with weight:The mixture of 4 compositions.
The particle diameter of described precipitated silica is 10nm, and specific surface area is 160m2/g.
The particle diameter of described gas-phase silica is 10nm, and specific surface area is 200m2/g.
Described silane adjuvant is to compare 2.0 by hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane with weight:
The mixture of 1.8 compositions.
Described lubricant is to compare 2 by zinc stearate and stearic acid with weight:The mixture of 1 composition.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high elongation rate silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 15min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 3-5h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 1.5h, use 150
Mesh filter screen filters, and obtains glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：After temperature rises to 100 DEG C, mediate 80min, then evacuation
40min, vacuum is in -0.07Mpa；Described step（6）In, curing temperature is 160 DEG C, and cure time is 12min.
Embodiment 2
A kind of high elongation rate silica gel, including the raw material of following weight portion：
100 parts of silicone rubber
48 parts of reinforcing agent
4 parts of silane adjuvant
0.2 part of lubricant
1.2 parts of vulcanizing agent.
Described silicone rubber is by methyl vinyl silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C
Compare 77 with weight：20：The mixture of 3 compositions；Wherein, the contents of ethylene of methyl vinyl silicone rubber A is 0.08%, molecular weight
For 650,000；The contents of ethylene of methyl vinyl silicone rubber B is 0.23%, and molecular weight is 650,000；Methyl vinyl silicone rubber C's
Contents of ethylene is 5%, and molecular weight is 660,000.
Described reinforcing agent is to compare 43 by precipitated silica and gas-phase silica with weight:The mixture of 5 compositions.
The particle diameter of described precipitated silica is 20nm, and specific surface area is 165m2/g.
The particle diameter of described gas-phase silica is 20nm, and specific surface area is 220m2/g.
Described silane adjuvant is to compare 2 by hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane with weight:2 groups
The mixture becoming.
Described lubricant is to compare 3 by zinc stearate and stearic acid with weight:The mixture of 1 composition.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high elongation rate silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 18min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 3-5h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 1.8h, use 150
Mesh filter screen filters, and obtains glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：After temperature rises to 105 DEG C, mediate 70min, then evacuation
50min, vacuum is in -0.08Mpa；Described step（6）In, curing temperature is 165 DEG C, and cure time is 11min.
Embodiment 3
A kind of high elongation rate silica gel, including the raw material of following weight portion：
100 parts of silicone rubber
50 parts of reinforcing agent
4.2 parts of silane adjuvant
0.2 part of lubricant
1.2 parts of vulcanizing agent.
Described silicone rubber is by methyl vinyl silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C
Compare 82 with weight：15：The mixture of 3 compositions；Wherein, the contents of ethylene of methyl vinyl silicone rubber A is 0.08%, molecular weight
For 650,000；The contents of ethylene of methyl vinyl silicone rubber B is 0.23%, and molecular weight is 650,000；Methyl vinyl silicone rubber C's
Contents of ethylene is 5%, and molecular weight is 660,000.
Described reinforcing agent is to compare 45 by precipitated silica and gas-phase silica with weight:The mixture of 5 compositions.
The particle diameter of described precipitated silica is 30nm, and specific surface area is 170m2/g.
The particle diameter of described gas-phase silica is 30nm, and specific surface area is 250m2/g.
Described silane adjuvant is to compare 2.2 by hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane with weight:2
The mixture of composition.
Described lubricant is to compare 3 by zinc stearate and stearic acid with weight:The mixture of 1 composition.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high elongation rate silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 30min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 4h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 2h, use 150 mesh
Strainer filtering, obtains glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：After temperature rises to 110 DEG C, mediate 60min, then evacuation
60min, vacuum is in -0.09Mpa；Described step（6）In, curing temperature is 170 DEG C, and cure time is 10min.
Embodiment 4
A kind of high elongation rate silica gel, including the raw material of following weight portion：
100 parts of silicone rubber
52 parts of reinforcing agent
4.4 parts of silane adjuvant
0.2 part of lubricant
1.2 parts of vulcanizing agent.
Described silicone rubber is by methyl vinyl silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C
Compare 86 with weight：10：The mixture of 4 compositions；Wherein, the contents of ethylene of methyl vinyl silicone rubber A is 0.08%, molecular weight
For 650,000；The contents of ethylene of methyl vinyl silicone rubber B is 0.23%, and molecular weight is 650,000；Methyl vinyl silicone rubber C's
Contents of ethylene is 5%, and molecular weight is 660,000.
Described reinforcing agent is to compare 47 by precipitated silica and gas-phase silica with weight:The mixture of 5 compositions.
The particle diameter of described precipitated silica is 40nm, and specific surface area is 175m2/g.
The particle diameter of described gas-phase silica is 40nm, and specific surface area is 80m2/g.
Described silane adjuvant is to compare 2.4 by hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane with weight:2
The mixture of composition.
Described lubricant is to compare 3 by zinc stearate and stearic acid with weight:The mixture of 1 composition.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high elongation rate silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 22min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 3-5h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 2.2h, use 150
Mesh filter screen filters, and obtains glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：After temperature rises to 115 DEG C, mediate 50min, then evacuation
70min, vacuum is in -0.1Mpa；Described step（6）In, curing temperature is 175 DEG C, and cure time is 11min.
Embodiment 5
A kind of high elongation rate silica gel, including the raw material of following weight portion：
110 parts of silicone rubber
52 parts of reinforcing agent
4.6 parts of silane adjuvant
0.25 part of lubricant
1.5 parts of vulcanizing agent.
Described silicone rubber is by methyl vinyl silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C
Compare 86 with weight：20：The mixture of 4 compositions；Wherein, the contents of ethylene of methyl vinyl silicone rubber A is 0.10%, molecular weight
For 660,000；The contents of ethylene of methyl vinyl silicone rubber B is 0.25%, and molecular weight is 660,000；Methyl vinyl silicone rubber C's
Contents of ethylene is 5.5%, and molecular weight is 670,000.
Described reinforcing agent is to compare 47 by precipitated silica and gas-phase silica with weight:The mixture of 6 compositions.
The particle diameter of described precipitated silica is 50nm, and specific surface area is 180m2/g.
The particle diameter of described gas-phase silica is 50nm, and specific surface area is 300m2/g.
Described silane adjuvant is to compare 2.4 by hydroxyl-terminated injecting two methyl siloxane and dimethyldiethoxysilane with weight:
The mixture of 2.2 compositions.
Described lubricant is to compare 4 by zinc stearate and stearic acid with weight:The mixture of 1 composition.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high elongation rate silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 25min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 3-5h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 2.5h, use 150
Mesh filter screen filters, and obtains glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：After temperature rises to 120 DEG C, mediate 40min, then evacuation
80min, vacuum is in -0.11Mpa；Described step（6）In, curing temperature is 180 DEG C, and cure time is 8min.
The mechanical and physical performance of the high elongation rate silica gel that embodiment 1-5 is obtained is as shown in table 1：
Table 1
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Shore hardness（A） | 50 | 52 | 51 | 51 | 50 |
| Resilience | 38 | 42 | 40 | 42 | 41 |
| Tensile strength（MPa） | 6 | 6.5 | 7.5 | 7 | 7.2 |
| Elongation at break（%） | 500 | 530 | 600 | 700 | 650 |
| Tearing strength（kN/M） | 15 | 18 | 16 | 17 | 16 |
| Specific insulation（Ω·cm） | 1.8×1014 | 2×1014 | 1.4×1014 | 2.4×1014 | 2.2×1014 |
| Proportion | 1.14 | 1.15 | 1.16 | 1.16 | 1.17 |
As can be seen from the above table, the high elongation rate silica gel of the present invention has higher percentage elongation, also has preferable hardness, intensity
And resilience, excellent combination property.
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can be realized with alternate manner,
Without departing from obvious replacement any on the premise of present inventive concept all within protection scope of the present invention.
Claims (10)
1. a kind of high elongation rate silica gel it is characterised in that：Raw material including following weight portion：
Silicone rubber 90-110 part
Reinforcing agent 48-52 part
Silane adjuvant 3.8-4.6 part
Lubricant 0.15-0.25 part
Vulcanizing agent 0.5-1.5 part.
2. a kind of high elongation rate silica gel according to claim 1 it is characterised in that：Described silicone rubber is by methyl ethylene
Silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C compare 77-86 with weight：10-20：The mixing of 3-4 composition
Thing；Wherein, the contents of ethylene of methyl vinyl silicone rubber A is 0.06-0.10%, and molecular weight is 64-66 ten thousand；Methyl ethylene
The contents of ethylene of silicone rubber B is 0.21-0.25%, and molecular weight is 64-66 ten thousand；The contents of ethylene of methyl vinyl silicone rubber C
For 4.5-5.5%, molecular weight is 65-67 ten thousand.
3. a kind of high elongation rate silica gel according to claim 1 it is characterised in that：Described reinforcing agent is by precipitated silica
With gas-phase silica, 43-47 is compared with weight:The mixture of 4-6 composition.
4. a kind of high elongation rate silica gel according to claim 3 it is characterised in that：The particle diameter of described precipitated silica is
10-50nm, specific surface area is 160-180m2/g.
5. a kind of high elongation rate silica gel according to claim 3 it is characterised in that：The particle diameter of described gas-phase silica is
10-50nm, specific surface area is 200-300m2/g.
6. a kind of high elongation rate silica gel according to claim 1 it is characterised in that：Described silane adjuvant is to be gathered by terminal hydroxy group
Dimethyl siloxane and dimethyldiethoxysilane compare 2.0-2.4 with weight:1.8-2.2 the mixture of composition.
7. a kind of high elongation rate silica gel according to claim 1 it is characterised in that：Described lubricant be by zinc stearate and
Stearic acid compares 2-4 with weight:The mixture of 1 composition.
8. a kind of high elongation rate silica gel according to claim 1 it is characterised in that：Described vulcanizing agent be 2,5- dimethyl-
2,5- bis-（Tert-butyl hydroperoxide）Hexane.
9. a kind of high elongation rate silica gel as described in any one of claim 1-8 preparation method it is characterised in that：Including as follows
Step：
（1）First in banbury, put into silicone rubber, stir 15-25min；
（2）Put into gas-phase silica and partly precipitated white carbon, then put into silane adjuvant and lubricant；
（3）After the gas-phase silica putting into and partly precipitated white carbon mix, then put into remaining precipitated silica in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 3-5h, obtain banburying glue；
（5）Banburying glue is carried out discharging, in input mill, mill is uniform, lower roll, put into filter after standing 1.5-2.5h, use
150 mesh filter screens filter, and obtain glue of beginning to pratise；
（6）Vulcanizing agent is added in glue of beginning to pratise and mixes, put into mould and carry out sulfidization molding, prepared high elongation rate silica gel.
10. a kind of high elongation rate silica gel according to claim 9 preparation method it is characterised in that：Described step（4）
In, the technological parameter of intensification refining glue is：After temperature rises to 100-120 DEG C, mediate 40-80min, then evacuation 40-80min, very
Reciprocal of duty cycle is in -0.07～-0.11Mpa；Described step（6）In, curing temperature is 160-180 DEG C, and cure time is 8-12min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610827152.8A CN106398229A (en) | 2016-09-14 | 2016-09-14 | High-elongation silica gel and preparation method thereof |
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| CN201610827152.8A CN106398229A (en) | 2016-09-14 | 2016-09-14 | High-elongation silica gel and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106928557A (en) * | 2017-03-28 | 2017-07-07 | 广州市鑫橡极科技有限公司 | A kind of modified EPT rubber and preparation method thereof |
| CN107916000A (en) * | 2017-10-24 | 2018-04-17 | 东莞市朗晟硅材料有限公司 | A kind of silica gel of solvent resistant and maceration extract and preparation method thereof |
| CN107916001A (en) * | 2017-10-24 | 2018-04-17 | 东莞市朗晟硅材料有限公司 | A kind of charging pile silica gel and preparation method thereof |
| CN108022673A (en) * | 2017-11-16 | 2018-05-11 | 东莞市朗晟硅材料有限公司 | A kind of fire resistant flexible branch cable of the anti-spray of antidetonation |
| CN109535730A (en) * | 2018-11-27 | 2019-03-29 | 东莞市朗晟硅材料有限公司 | A kind of antistatic silicone rubber of electric wire and preparation method thereof |
| CN109627778A (en) * | 2018-11-27 | 2019-04-16 | 东莞市朗晟硅材料有限公司 | A kind of electric wire silicon rubber and preparation method thereof that soft squeezes out |
| CN110001161A (en) * | 2019-03-08 | 2019-07-12 | 东莞市朗晟材料科技有限公司 | A kind of silica gel packaging part and preparation method thereof for new energy battery |
| CN110330795A (en) * | 2019-05-31 | 2019-10-15 | 东莞市天桉硅胶科技有限公司 | A kind of high-temperature-resisting silicon rubber and preparation method thereof |
| CN112646294A (en) * | 2020-12-18 | 2021-04-13 | 成都硅宝科技股份有限公司 | Fluororubber/silicone rubber blended rubber and preparation method thereof |
| CN109679348B (en) * | 2018-11-27 | 2021-04-30 | 东莞市朗晟材料科技有限公司 | Flame-retardant silicone rubber and continuous production process and continuous production system thereof |
| CN113004702A (en) * | 2021-03-08 | 2021-06-22 | 佛山市天宝利硅工程科技有限公司 | Silicone rubber compound and preparation method thereof |
| CN113088090A (en) * | 2021-03-08 | 2021-07-09 | 浙江恒业成有机硅有限公司 | High-resilience low-pressure-change silicone rubber material and preparation method thereof |
| CN114479471A (en) * | 2022-02-21 | 2022-05-13 | 厦门和新科技有限公司 | Anti-scraping high-elongation high-resilience silica gel material |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106928557A (en) * | 2017-03-28 | 2017-07-07 | 广州市鑫橡极科技有限公司 | A kind of modified EPT rubber and preparation method thereof |
| CN107916000A (en) * | 2017-10-24 | 2018-04-17 | 东莞市朗晟硅材料有限公司 | A kind of silica gel of solvent resistant and maceration extract and preparation method thereof |
| CN107916001A (en) * | 2017-10-24 | 2018-04-17 | 东莞市朗晟硅材料有限公司 | A kind of charging pile silica gel and preparation method thereof |
| CN108022673A (en) * | 2017-11-16 | 2018-05-11 | 东莞市朗晟硅材料有限公司 | A kind of fire resistant flexible branch cable of the anti-spray of antidetonation |
| CN109679348B (en) * | 2018-11-27 | 2021-04-30 | 东莞市朗晟材料科技有限公司 | Flame-retardant silicone rubber and continuous production process and continuous production system thereof |
| CN109627778A (en) * | 2018-11-27 | 2019-04-16 | 东莞市朗晟硅材料有限公司 | A kind of electric wire silicon rubber and preparation method thereof that soft squeezes out |
| CN109535730A (en) * | 2018-11-27 | 2019-03-29 | 东莞市朗晟硅材料有限公司 | A kind of antistatic silicone rubber of electric wire and preparation method thereof |
| CN110001161A (en) * | 2019-03-08 | 2019-07-12 | 东莞市朗晟材料科技有限公司 | A kind of silica gel packaging part and preparation method thereof for new energy battery |
| CN110001161B (en) * | 2019-03-08 | 2022-04-12 | 东莞市朗晟材料科技有限公司 | Silica gel packaging part for new energy battery and preparation method thereof |
| CN110330795A (en) * | 2019-05-31 | 2019-10-15 | 东莞市天桉硅胶科技有限公司 | A kind of high-temperature-resisting silicon rubber and preparation method thereof |
| CN112646294A (en) * | 2020-12-18 | 2021-04-13 | 成都硅宝科技股份有限公司 | Fluororubber/silicone rubber blended rubber and preparation method thereof |
| CN113004702A (en) * | 2021-03-08 | 2021-06-22 | 佛山市天宝利硅工程科技有限公司 | Silicone rubber compound and preparation method thereof |
| CN113088090A (en) * | 2021-03-08 | 2021-07-09 | 浙江恒业成有机硅有限公司 | High-resilience low-pressure-change silicone rubber material and preparation method thereof |
| CN114479471A (en) * | 2022-02-21 | 2022-05-13 | 厦门和新科技有限公司 | Anti-scraping high-elongation high-resilience silica gel material |
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