CN103350477B - Method for producing rolled silicone rubber film through unsupported calendering - Google Patents
Method for producing rolled silicone rubber film through unsupported calendering Download PDFInfo
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- CN103350477B CN103350477B CN201310237568.0A CN201310237568A CN103350477B CN 103350477 B CN103350477 B CN 103350477B CN 201310237568 A CN201310237568 A CN 201310237568A CN 103350477 B CN103350477 B CN 103350477B
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Abstract
The invention belongs to a method for producing a silicone rubber film, and specifically relates to a method for producing rolled silicone rubber film through unsupported calendering. The method comprises the steps of silicone rubber composition mixing, defoaming, unsupported calendering, vulcanizing, and rolling. Especially, after mixing, the material needs to be settled for 4-8h under normal temperature, and the material can be de-foamed in an extruder. Compared with prior art, with the adjustment on technical scheme, a polyester film used in supporting can be eliminated, such that cost is greatly reduced, and efficiency is improved. The scheme is simple and feasible, and can be realized on the basis of an existing device. Various indexes of produced rolled silicone rubber film satisfy requirements.
Description
Technical field
The invention belongs to the method for producing silicon rubber film, being specifically related to the method without supporting calendering production silicon rubber film coil.
Background technology
Silicon rubber film take silicon rubber as a kind of polysiloxane film of raw material by technological formings such as mold pressing, calendering, curtain coatings.It has the characteristic of general silicon rubber and stronger absorption, dust collection capacity.
Publication number is the production technology that the Chinese patent of CN101973128B discloses a kind of silicon rubber film coil, first by mixing roll, silicon rubber and various additive are carried out mixing through mill, directly mixture is sent into extruder de-bubble, silastic mixture after de-bubble sends into calender calendering together with polyester film, atmospheric pressure vulcanization in the baking oven of rear feeding temperature increment, obtains the silicon rubber film comprising polyester film after rolling.Due to the insufficient strength of the mixture after mixing, de-bubble, therefore need to be attached on polyester film and just can complete calendering, sulfuration and wrapup procedure.Need during use could use after polyester film stripping.Therefore passive polyester film adds production cost and consumption.
Summary of the invention
Technical problem to be solved by this invention is prepared in silicon rubber film coil process by calendering technology at present to need to be rolled by support film, in order to overcome above deficiency, provides a kind of method without supporting calendering production silicon rubber film coil.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: the described method without supporting calendering production silicon rubber film coil, comprise mixing, the de-bubble of rubber composition, calendering, sulfuration and rolling step, particularly after mixing rear normal temperature leaves standstill 4 ~ 8 hours, send extruder de-bubble again, and silastic mixture carries out under the condition supported without polyester film when rolling, namely without support calendering.
Further, described rubber composition comprises the component of following weight proportion: silicone rubber resina 100 parts, bridging agent A agent 0.4 ~ 0.6 part, bridging agent B agent 1 ~ 2.0 part, additive 0.5 ~ 5 part, described bridging agent A agent main component is the complex compound of chloroplatinic acid and siloxanes, and the main component of described bridging agent B agent is delayed-action activator and hydrogen-containing siloxane crosslinking agent.
Further, described additive comprises zinc stearate, titanium dioxide and thermal black.
Further, the mixing of described rubber composition comprises the following steps: first described silicone rubber resina is inserted mill and carry out mastication, after mastication, described additive and bridging agent B agent are added that to carry out the first stage mixing, finally described bridging agent A agent is added that to carry out second stage mixing.
Further, the time of described mastication is 5 ~ 8 minutes, and mixing time described first stage is 8 ~ 12 minutes, and described second stage mixing time is 8 ~ 10 minutes, and during described rubber composition mixing, temperature is 10 ~ 40 DEG C.
Further, described is 10 ~ 60 DEG C without temperature when supporting to roll.
Further, the described method without supporting calendering production silicon rubber film coil also comprises surface solidification, the solidification of described surface is arranged on described without after support calendering, and before sulfuration, the solidification of described surface under 100 ~ 170 DEG C of high temperature, solidifies 40 ~ 50s without product after support calendering.
Further, the solidification of described surface uses vertical drying oven.
Further, described sulfuration comprises the following steps: described silastic mixture carries out atmospheric pressure vulcanization through continous way baking oven, and in continous way baking oven, the time of staying is 8 ~ 15 minutes, and curing temperature is 60 ~ 160 DEG C.
It is 0.1 ~ 2.0mm that technical scheme provided by the invention may be used for preparing thickness, hardness shore A is the silicon rubber film coil of 40 ~ 50, be mainly used in various mobile phone, computer monitor liquid crystal display periphery module, its function is shading-reduction light loss, buffering, insulation, waterproof and rub resistance etc.
Technical scheme provided by the invention compared with prior art, by the adjustment of process program, the polyester film supported can be saved, thus greatly reduce cost, improve efficiency, scheme is simple, and existing equipment basis can realize, and the indices of the silicon rubber film coil produced all meets the requirements.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is elaborated, but the invention is not restricted to these embodiments.
Embodiment 1
Method without supporting calendering production silicon rubber film coil of the present invention comprises the following steps:
1) rubber composition is mixing: first 100 parts of silicone rubber resinas are inserted mill and carry out mastication, time is 6 minutes, mastication well after again 0.5 part of additive and 1.5 parts of bridging agent B agent are added that to carry out the first stage mixing, mixing time 8 minutes, and then add 0.4 part of bridging agent A and carry out second stage mixing 9 minutes, make various component dispersed, in mixing process, temperature should control at 10 ~ 40 DEG C.
2) the silastic mixture room temperature after mixing in step 1) is left standstill 4 hours.
3) de-bubble and without supporting calendering: the silastic mixture after leaving standstill being sent into extruder de-bubble, directly sends into calender after de-bubble and roll, controlling at 10 ~ 60 DEG C without supporting rolling temperature.
4) surface solidification: by without supporting the silicon rubber film of calendering formation continuously across about one meter of high vertical drying oven, carry out film surface solidification, hardening time 40s, temperature controls at 160 DEG C.
5) sulfuration: the silicon rubber film through surface solidification sends into continous way baking oven, and carry out normal pressure solidification, solidification temperature is 100 DEG C, continous way oven residence time 12 minutes.
6) cool rolling, namely obtain described silicon rubber film coil.
Silicone rubber resina described in described rubber composition is the KE961-U of Shin-Etsu Chemial Co., Ltd, described bridging agent A agent and bridging agent B agent are SHIN-ETSU HANTOTAI platinum vulcanizing agent C-19A/B, bridging agent A agent comprises the complex compound of chloroplatinic acid and siloxanes, bridging agent B agent comprises delayed-action activator and hydrogen-containing siloxane crosslinking agent, and described additive comprises zinc stearate, titanium dioxide and thermal black.
Embodiment 2
Method without supporting calendering production silicon rubber film coil of the present invention comprises the following steps:
1) rubber composition is mixing: first 100 parts of silicone rubber resinas are inserted mill and carry out mastication, time is 8 minutes, mastication well after again 4.5 parts of additives and 1 part of bridging agent B agent are added that to carry out the first stage mixing, mixing time 10 minutes, and then add 0.5 part of bridging agent A and carry out second stage mixing 8 minutes, make various component dispersed, in mixing process, temperature should control at 10 ~ 40 DEG C.
2) the silastic mixture room temperature after mixing in step 1) is left standstill 6 hours.
3) de-bubble and without supporting calendering: the silastic mixture after leaving standstill being sent into extruder de-bubble, directly sends into calender after de-bubble and roll, controlling at 10 ~ 60 DEG C without supporting rolling temperature.
4) surface solidification: by without supporting the silicon rubber film of calendering formation continuously across about one meter of high vertical drying oven, carry out film surface solidification, hardening time 45s, temperature controls at 140 DEG C.
5) sulfuration: the silicon rubber film through surface solidification sends into continous way baking oven, and carry out normal pressure solidification, solidification temperature is 110 DEG C, continous way oven residence time 12 minutes.
6) cool rolling, namely obtain described silicon rubber film coil.
Silicone rubber resina described in described rubber composition is the KE571-US of Shin-Etsu Chemial Co., Ltd, described bridging agent A agent and bridging agent B agent are SHIN-ETSU HANTOTAI platinum vulcanizing agent C-19A/B, bridging agent A agent comprises the complex compound of chloroplatinic acid and siloxanes, bridging agent B agent comprises delayed-action activator and hydrogen-containing siloxane crosslinking agent, and described additive comprises zinc stearate, titanium dioxide and thermal black.
Embodiment 3
Method without supporting calendering production silicon rubber film coil of the present invention comprises the following steps:
1) rubber composition is mixing: first 100 parts of silicone rubber resinas are inserted mill and carry out mastication, time is 5 minutes, mastication well after again 2 parts of additives and 2 parts of bridging agent B agent are added that to carry out the first stage mixing, mixing time 12 minutes, and then add 0.6 part of bridging agent A and carry out second stage mixing 10 minutes, make various component dispersed, in mixing process, temperature should control at 10 ~ 40 DEG C.
2) the silastic mixture room temperature after mixing in step 1) is left standstill 8 hours.
3) de-bubble and without supporting calendering: the silastic mixture after leaving standstill being sent into extruder de-bubble, directly sends into calender after de-bubble and roll, controlling at 10 ~ 60 DEG C without supporting rolling temperature.
4) surface solidification: by without supporting the silicon rubber film of calendering formation continuously across about one meter of high vertical drying oven, carry out film surface solidification, hardening time 50s, temperature controls at 80 DEG C.
5) sulfuration: the silicon rubber film through surface solidification sends into continous way baking oven, and carry out normal pressure solidification, solidification temperature is 150 DEG C, continous way oven residence time 8 minutes.
6) cool rolling, namely obtain described silicon rubber film coil.
Silicone rubber resina described in described rubber composition is the B6630 of Dow Corning Corporation, described bridging agent A agent and bridging agent B agent are SHIN-ETSU HANTOTAI platinum vulcanizing agent C-19A/B, bridging agent A agent comprises the complex compound of chloroplatinic acid and siloxanes, bridging agent B agent comprises delayed-action activator and hydrogen-containing siloxane crosslinking agent, and described additive comprises zinc stearate, titanium dioxide and thermal black.
Above embodiment gained silicon rubber film coil can be used as anti-dazzling screen or buffer substrate tablet materials application is inner in liquid crystal display.
The object of above embodiment is to allow those skilled in the art can understand content of the present invention, can not limit the scope of the invention with this, and the change that all essence according to the present invention is done or modification, all should be encompassed in protection scope of the present invention.
Claims (8)
1. produce the method for silicon rubber film coil without support calendering for one kind, comprise the mixing of rubber composition, de-bubble, calendering, sulfuration and rolling step, it is characterized in that, extruder de-bubble is sent again after mixing rear normal temperature leaves standstill 4 ~ 8 hours, during calendering, silastic mixture carries out under the condition supported without polyester film, namely without support calendering, described rubber composition comprises the component of following weight proportion: silicone rubber resina 100 parts, bridging agent A agent 0.4 ~ 0.6 part, bridging agent B agent 1 ~ 2.0 part, additive 0.5 ~ 5 part, described bridging agent A agent main component is the complex compound of chloroplatinic acid and siloxanes, the main component of described bridging agent B agent is delayed-action activator and hydrogen-containing siloxane crosslinking agent.
2. a kind of without supporting the method for rolling and producing silicon rubber film coil according to claim 1, it is characterized in that, described additive comprises zinc stearate, titanium dioxide and thermal black.
3. a kind of without supporting the method for rolling and producing silicon rubber film coil according to claim 1, it is characterized in that, the mixing of described rubber composition comprises the following steps: first described silicone rubber resina is inserted mill and carry out mastication, after mastication, described additive and bridging agent B agent are added that to carry out the first stage mixing, finally described bridging agent A agent is added that to carry out second stage mixing.
4. a kind of without supporting the method for rolling and producing silicon rubber film coil according to claim 3, it is characterized in that, the time of described mastication is 5 ~ 8 minutes, mixing time described first stage is 8 ~ 12 minutes, described second stage mixing time is 8 ~ 10 minutes, and during described rubber composition mixing, temperature is 10 ~ 40 DEG C.
5. a kind of nothing supports the method that silicon rubber film coil is produced in calendering according to claim 1, it is characterized in that, described is 10 ~ 60 DEG C without temperature during support calendering.
6. a kind of without supporting the method for rolling and producing silicon rubber film coil according to claim 1, it is characterized in that, the described method without supporting calendering production silicon rubber film coil also comprises surface solidification, the solidification of described surface is arranged on described without after support calendering, before sulfuration, the solidification of described surface under 100 ~ 170 DEG C of high temperature, solidifies 40 ~ 50s without product after support calendering.
7. a kind of nothing supports the method that silicon rubber film coil is produced in calendering according to claim 6, it is characterized in that, described surperficial solidification uses vertical drying oven.
8. a kind of without supporting the method for rolling and producing silicon rubber film coil according to claim 1, it is characterized in that, described sulfuration comprises the following steps: described silastic mixture carries out atmospheric pressure vulcanization through continous way baking oven, in continous way baking oven, the time of staying is 8 ~ 15 minutes, and curing temperature is 60 ~ 160 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310237568.0A CN103350477B (en) | 2013-06-14 | 2013-06-14 | Method for producing rolled silicone rubber film through unsupported calendering |
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| CN201310237568.0A CN103350477B (en) | 2013-06-14 | 2013-06-14 | Method for producing rolled silicone rubber film through unsupported calendering |
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| CN103350477A CN103350477A (en) | 2013-10-16 |
| CN103350477B true CN103350477B (en) | 2015-05-06 |
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| CN106362599A (en) * | 2016-08-29 | 2017-02-01 | 无锡零界净化设备有限公司 | Preparation method of supporting-layer-free micro-porous flat plate filter membrane |
| CN106863861A (en) * | 2017-01-25 | 2017-06-20 | 桂林裕天新材料有限公司 | A kind of preparation method of the silicone band that insulate |
| CN106891556A (en) * | 2017-01-25 | 2017-06-27 | 桂林裕天新材料有限公司 | A kind of preparation method of solid-state silica gel foamed silica gel plate |
| CN111925736A (en) * | 2020-08-11 | 2020-11-13 | 杭州远洋实业有限公司 | Silicon rubber rubberized fabric for civil aviation aircraft and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398714A (en) * | 2001-07-25 | 2003-02-26 | 厚生股份有限公司 | Producing process of silicon rubber film coil |
| CN101973128A (en) * | 2010-09-17 | 2011-02-16 | 苏州市金禾橡塑科技有限公司 | Production process of spiral-wound silicon rubber membrane |
| CN102179979A (en) * | 2011-03-09 | 2011-09-14 | 苏州金禾新材料股份有限公司 | Roll type rubber polyester composite film and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3436433B2 (en) * | 1995-01-27 | 2003-08-11 | 信越化学工業株式会社 | Dispensing method of silicone rubber sheet |
| KR100636312B1 (en) * | 2003-10-06 | 2006-10-18 | (주)태인케미컬 | Method and manufacture apparatus of silicon rubber sheet for membrane press |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398714A (en) * | 2001-07-25 | 2003-02-26 | 厚生股份有限公司 | Producing process of silicon rubber film coil |
| CN101973128A (en) * | 2010-09-17 | 2011-02-16 | 苏州市金禾橡塑科技有限公司 | Production process of spiral-wound silicon rubber membrane |
| CN102179979A (en) * | 2011-03-09 | 2011-09-14 | 苏州金禾新材料股份有限公司 | Roll type rubber polyester composite film and production process thereof |
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