CN106398230A - High-hardness and air-pressure-resistant silica gel and preparation method thereof - Google Patents
High-hardness and air-pressure-resistant silica gel and preparation method thereof Download PDFInfo
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- 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
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Abstract
The invention relates to the technical field of silica gel, in particular to high-hardness and air-pressure-resistant silica gel and a preparation method thereof. The high-hardness and air-pressure-resistant silica gel comprises, by weight, 68-132 parts of silicone rubber, 60-70 parts of reinforcing agent, 13.6-15.4 parts of silane auxiliaries, 0.3-0.7 part of distilled water, 0.14-0.22 part of lubricating agent, 1-2 parts of hardness-increasing agent and 0.5-1.5 parts of vulcanizing agent. The high-hardness and air-pressure-resistant silica gel is high in hardness, good in air pressure resistance and excellent in comprehensive performance.
Description
Technical field
The present invention relates to silica gel technical field is and in particular to a kind of high rigidity air pressure resistance 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 hardness is relatively low, and air pressure resistance poor-performing, thus requiring high rigidity and the field application of air pressure resistance to be limited some
System.
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 rigidity gasproof
Pressure silica gel, this high rigidity air pressure resistance silica gel has higher hardness, and air pressure resistance better performances, excellent combination property.
Another object of the present invention is to providing a kind of preparation method of high rigidity air pressure resistance silica gel, this preparation method technique
Simply, 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 rigidity air pressure resistance silica gel, including following weight portion
Raw material：
Silicone rubber 68-132 part
Reinforcing agent 60-70 part
Silane adjuvant 13.6-15.4 part
Distilled water 0.3-0.7 part
Lubricant 0.14-0.22 part
Hardening agent 1-2 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 rigidity air pressure resistance
Silica gel has higher hardness, and air pressure resistance better performances, 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 30-60 with weight：28-60：The mixture of 10-12 composition；Wherein, the vinyl of methyl vinyl silicone rubber A contains
Measure as 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%, molecule
Measure as 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 30-60：28-60：10-12, prepared high rigidity air pressure resistance silica gel has higher intensity and hardness.
Preferably, described reinforcing agent be particle diameter in 10-50nm, specific surface area in 200-300m2The gas-phase silica of/g.
The present invention passes through using particle diameter in 10-50nm, specific surface area in 200-300m2The gas-phase silica of/g is as reinforcement
Agent, its particle diameter is little, is dispersed in the mechanical strength that can improve silicone rubber in silicone rubber.
Preferably, described silane adjuvant is by hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyl
Disilazane and vinyltrimethoxy silane compare 6.2-6.8 with weight:5.6-6.2:0.4-0.6:1.4-1.8 the mixing of composition
Thing.
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, by adopting hexamethyldisiloxane, processes gas-phase silica with silazane, increased organic silicon rubber and gas
The compatibility of phase white carbon, so that gas-phase silica is uniformly dispersed, is conducive to improving intensity；The present invention is by adopting vinyl
Trimethoxy silane, as silane coupler, can increase substantially enhancing compound physical mechanical property, and improve filler in sizing material
In wettability and dispersibility.
The present invention passes through using hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyldisiloxane
With vinyltrimethoxy silane as silane adjuvant compounding use, and control its weight than for 6.2-6.8:5.6-6.2:0.4-
0.6:1.4-1.8, prepared high rigidity air pressure resistance silica gel has higher intensity and processing characteristics.
Preferably, described lubricant is to compare 0.10-0.14 by zinc stearate and stearic acid with weight:0.04-0.08 forms
Mixture.
The present invention is by being used as lubricant compounding use using zinc stearate and stearic acid, and controls its weight ratio to be
0.10-0.14:0.04-0.08, can effectively improve the demolding performace of silicone rubber.
Preferably, described Hardening agent is alumina powder, ultrafine silica powder, silica flour, ceramics, silicate powder, poly- methyl
At least one in methacrylate powder and polyflon powder.
The present invention passes through using above-mentioned Hardening agent, is remarkably improved hardness and the resilience of silicone rubber, prepared high rigidity
Air pressure resistance silica gel has higher hardness.
Preferably, the particle diameter of described Hardening agent is 20-80nm, and Mohs' hardness is 4-10Mohs.
The present invention passes through the size controlling of Hardening agent in 20-80nm, and Mohs' hardness controls in 4-10Mohs, prepared height
Hardness air pressure resistance silica gel has higher hardness.
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 rigidity air pressure resistance silica gel has higher hardness, and air pressure resistance better performances, excellent combination property.
A kind of preparation method of high rigidity air pressure resistance silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 8-12min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 6-10h, 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 rigidity air pressure resistance 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 hardness and the air pressure resistance performance of high rigidity air pressure resistance silica gel further.
Preferably, described step（4）In, the technological parameter of intensification refining glue is：Temperature rises to 110-130 DEG C, mediates 40-
80min, then evacuation 40-80min, vacuum is in -0.06～-0.10Mpa.
The present invention passes through the strict temperature controlling intensification refining glue and vacuum, and prepared high rigidity air pressure resistance silica gel has relatively
High hardness.
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 rigidity air pressure resistance of its cure efficiency
Silica gel has higher hardness, and air pressure resistance better performances, excellent combination property.
The beneficial effects of the present invention is：The high rigidity air pressure resistance silica gel of the present invention has higher hardness, and air pressure resistance
Better performances, excellent combination property.
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 rigidity air pressure resistance silica gel, including the raw material of following weight portion：
68 parts of silicone rubber
60 parts of reinforcing agent
13.6 parts of silane adjuvant
0.3 part of distilled water
0.14 part of lubricant
1 part of Hardening agent
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 30 with weight：28：The mixture of 10 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 be particle diameter in 10nm, specific surface area in 200m2The gas-phase silica of/g.
Described silane adjuvant is by hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyl two silicon nitrogen
Alkane and vinyltrimethoxy silane compare 6.2 with weight:5.6:0.4:The mixture of 1.4 compositions.
Described lubricant is to compare 0.10 by zinc stearate and stearic acid with weight:The mixture of 0.04 composition.
Described Hardening agent is alumina powder or ultrafine silica powder.
The particle diameter of described Hardening agent is 20nm, and Mohs' hardness is 4Mohs.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high rigidity air pressure resistance silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 8min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 6h, 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 rigidity air pressure resistance silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：Temperature rises to 110 DEG C, mediates 80min, then evacuation
40min, vacuum is in -0.06Mpa；Described step（6）In, curing temperature is 160 DEG C, and cure time is 12min.
Embodiment 2
A kind of high rigidity air pressure resistance silica gel, including the raw material of following weight portion：
100 parts of silicone rubber
65 parts of reinforcing agent
14.3 parts of silane adjuvant
0.5 part of distilled water
0.18 part of lubricant
1.5 parts of Hardening agent
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 30 with weight：60：The mixture of 10 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 5.0%, and molecular weight is 660,000.
Described reinforcing agent be particle diameter in 20nm, specific surface area in 220m2The gas-phase silica of/g.
Described silane adjuvant is by hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyl two silicon nitrogen
Alkane and vinyltrimethoxy silane compare 6.4 with weight:5.8:0.5:The mixture of 1.6 compositions.
Described lubricant is to compare 0.12 by zinc stearate and stearic acid with weight:The mixture of 0.06 composition.
Described Hardening agent is silica flour.
The particle diameter of described Hardening agent is 40nm, and Mohs' hardness is 6Mohs.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high rigidity air pressure resistance silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 9min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 7h, 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 rigidity air pressure resistance silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：Temperature rises to 115 DEG C, mediates 70min, then evacuation
50min, vacuum is in -0.07Mpa；Described step（6）In, curing temperature is 165 DEG C, and cure time is 11min.
Embodiment 3
A kind of high rigidity air pressure resistance silica gel, including the raw material of following weight portion：
100 parts of silicone rubber
65 parts of reinforcing agent
14.3 parts of silane adjuvant
0.5 part of distilled water
0.18 part of lubricant
1.5 parts of Hardening agent
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 45 with weight：45：The mixture of 10 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 5.0%, and molecular weight is 660,000.
Described reinforcing agent be particle diameter in 30nm, specific surface area in 250m2The gas-phase silica of/g.
Described silane adjuvant is by hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyl two silicon nitrogen
Alkane and vinyltrimethoxy silane compare 6.4 with weight:5.8:0.5:The mixture of 1.6 compositions.
Described lubricant is to compare 0.12 by zinc stearate and stearic acid with weight:The mixture of 0.06 composition.
Described Hardening agent is ceramics.
The particle diameter of described Hardening agent is 50nm, and Mohs' hardness is 7Mohs.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high rigidity air pressure resistance silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 10min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 8h, 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 rigidity air pressure resistance silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：Temperature rises to 120 DEG C, mediates 60min, then evacuation
60min, vacuum is in -0.08Mpa；Described step（6）In, curing temperature is 170 DEG C, and cure time is 10min.
Embodiment 4
A kind of high rigidity air pressure resistance silica gel, including the raw material of following weight portion：
100 parts of silicone rubber
66 parts of reinforcing agent
14.7 parts of silane adjuvant
0.5 part of distilled water
0.18 part of lubricant
1.5 parts of Hardening agent
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 60 with weight：28：The mixture of 12 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 6,450,000；Methyl vinyl silicone rubber C's
Contents of ethylene is 5.0%, and molecular weight is 660,000.
Described reinforcing agent be particle diameter in 40nm, specific surface area in 280m2The gas-phase silica of/g.
Described silane adjuvant is by hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyl two silicon nitrogen
Alkane and vinyltrimethoxy silane compare 6.6 with weight:6.0:0.5:The mixture of 1.6 compositions.
Described lubricant is to compare 0.12 by zinc stearate and stearic acid with weight:The mixture of 0.06 composition.
Described Hardening agent is silicate powder.
The particle diameter of described Hardening agent is 60nm, and Mohs' hardness is 8Mohs.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high rigidity air pressure resistance silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 11min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 9h, 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 rigidity air pressure resistance silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：Temperature rises to 125 DEG C, mediates 70min, then evacuation
50min, vacuum is in -0.09Mpa；Described step（6）In, curing temperature is 175 DEG C, and cure time is 11min.
Embodiment 5
A kind of high rigidity air pressure resistance silica gel, including the raw material of following weight portion：
132 parts of silicone rubber
70 parts of reinforcing agent
15.4 parts of silane adjuvant
0.7 part of distilled water
0.22 part of lubricant
2 parts of Hardening agent
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 60 with weight：60：The mixture of 12 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 be particle diameter in 10-50nm, specific surface area in 200-300m2The gas-phase silica of/g.
Described silane adjuvant is by hydroxyl-terminated injecting two methyl siloxane, dimethyldiethoxysilane, hexamethyl two silicon nitrogen
Alkane and vinyltrimethoxy silane compare 6.8 with weight:56.2:0.6:The mixture of 1.8 compositions.
Described lubricant is to compare 0.14 by zinc stearate and stearic acid with weight:The mixture of 0.08 composition.
Described Hardening agent is polymethyl methacrylate powder or polyflon powder.
The particle diameter of described Hardening agent is 60nm, and Mohs' hardness is 8Mohs.
Described vulcanizing agent is 2,5- dimethyl -2,5- two（Tert-butyl hydroperoxide）Hexane.
A kind of preparation method of high rigidity air pressure resistance silica gel, comprises the steps：
（1）First in banbury, put into silicone rubber, stir 12min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 10h, 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 rigidity air pressure resistance silica gel.
Described step（4）In, the technological parameter of intensification refining glue is：Temperature rises to 130 DEG C, mediates 40min, then evacuation
80min, vacuum is in -0.10Mpa；Described step（6）In, curing temperature is 180 DEG C, and cure time is 8min.
The mechanical and physical performance of the high rigidity air pressure resistance 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） | 86 | 88 | 88 | 90 | 90 |
| Resilience | 48 | 50 | 50 | 48 | 52 |
| Tensile strength（MPa） | 8.2 | 8.5 | 8 | 8.8 | 8.6 |
| Elongation at break（%） | 120 | 120 | 130 | 150 | 140 |
| Tearing strength（kN/M） | 13 | 15 | 14 | 16 | 14 |
| Specific insulation（Ω·cm） | 2.1×1015 | 5×1015 | 2.7×1015 | 2.3×1015 | 4.3×1015 |
| Proportion | 1.22 | 1.23 | 1.23 | 1.24 | 1.25 |
As can be seen from the above table, the high rigidity air pressure resistance silica gel of the present invention has higher hardness, and air pressure resistance better performances, also
There is preferable intensity, resilience and percentage elongation, 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 rigidity air pressure resistance silica gel it is characterised in that：Raw material including following weight portion：
Silicone rubber 68-132 part
Reinforcing agent 60-70 part
Silane adjuvant 13.6-15.4 part
Distilled water 0.3-0.7 part
Lubricant 0.14-0.22 part
Hardening agent 1-2 part
Vulcanizing agent 0.5-1.5 part.
2. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：Described silicone rubber is by methyl second
Thiazolinyl silicone rubber A, methyl vinyl silicone rubber B and methyl vinyl silicone rubber C compare 30-60 with weight：28-60：10-12 forms
Mixture；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
The contents of ethylene of vinylsiloxane rubber B is 0.21-0.25%, and molecular weight is 64-66 ten thousand；The ethylene of methyl vinyl silicone rubber C
Base content is 4.5-5.5%, and molecular weight is 65-67 ten thousand.
3. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：Described reinforcing agent exists for particle diameter
10-50nm, specific surface area are in 200-300m2The gas-phase silica of/g.
4. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：Described silane adjuvant is by end hydroxyl
Base polydimethylsiloxane, dimethyldiethoxysilane, hexamethyldisiloxane and vinyltrimethoxy silane are with weight
Compare 6.2-6.8:5.6-6.2:0.4-0.6:1.4-1.8 the mixture of composition.
5. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：Described lubricant is by stearic acid
Zinc and stearic acid compare 0.10-0.14 with weight:The mixture of 0.04-0.08 composition.
6. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：Described Hardening agent is aluminium oxide
In powder, ultrafine silica powder, silica flour, ceramics, silicate powder, polymethyl methacrylate powder and polyflon powder
At least one.
7. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：The particle diameter of described Hardening agent is
20-80nm, Mohs' hardness is 4-10Mohs.
8. a kind of high rigidity air pressure resistance silica gel according to claim 1 it is characterised in that：Described vulcanizing agent is 2,5- diformazan
Base -2,5- two（Tert-butyl hydroperoxide）Hexane.
9. a kind of high rigidity air pressure resistance silica gel as described in any one of claim 1-8 preparation method it is characterised in that：Including
Following steps：
（1）First in banbury, put into silicone rubber, stir 8-12min；
（2）Put into part reinforcing agent, then put into silane adjuvant, distilled water, lubricant and Hardening agent；
（3）After the part reinforcing agent putting into mixes, then put into remaining reinforcing agent in five times；
（4）Will be agglomerating for above mixing raw materials, discharging, again put into banbury, intensification refining glue after placing 6-10h, 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 rigidity air pressure resistance silica gel.
10. a kind of high rigidity air pressure resistance 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：Temperature rises to 110-130 DEG C, mediates 40-80min, then evacuation 40-80min, very
Reciprocal of duty cycle is in -0.06～-0.10Mpa；Described step（6）In, curing temperature is 160-180 DEG C, and cure time is 8-12min.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| CN109962438A (en) * | 2019-03-08 | 2019-07-02 | 东莞市朗晟材料科技有限公司 | A kind of silicon rubber gantry of fire-retardant fireproof and preparation method thereof |
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| CN112063172A (en) * | 2020-07-28 | 2020-12-11 | 东莞市朗晟材料科技有限公司 | High-hardness air pressure-resistant silicone rubber and preparation method and use 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 |
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| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN109962438A (en) * | 2019-03-08 | 2019-07-02 | 东莞市朗晟材料科技有限公司 | A kind of silicon rubber gantry of fire-retardant fireproof 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 |
| CN112063172A (en) * | 2020-07-28 | 2020-12-11 | 东莞市朗晟材料科技有限公司 | High-hardness air pressure-resistant silicone rubber and preparation method and use method thereof |
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Address after: 523000 No.1 Building, 23 Weixing Road, Chashan Town, Dongguan City, Guangdong Province Applicant after: Dongguan Langsheng Material Technology Co., Ltd. Address before: 523000 Second Floor of Honghengjing Industrial Park, No. 13 Lianma Road, Dalingshan Town, Dongguan City, Guangdong Province Applicant before: Dongguan Langsheng Silicon Materials Co., Ltd. |
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Application publication date: 20170215 |