CN1884378A - Open- cells silicon rubber foam material and its preparation process and use - Google Patents
Open- cells silicon rubber foam material and its preparation process and use Download PDFInfo
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- CN1884378A CN1884378A CN 200610021103 CN200610021103A CN1884378A CN 1884378 A CN1884378 A CN 1884378A CN 200610021103 CN200610021103 CN 200610021103 CN 200610021103 A CN200610021103 A CN 200610021103A CN 1884378 A CN1884378 A CN 1884378A
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Abstract
The invention discloses the open cell silicon rubber foamed material and preparing method, comprising the following steps: mixing the 100 parts silicon rubber, 15-80 parts strengthening agent, 2-15 parts structure control agent, 150-300 parts pore former and 0-4 parts cross-linking agent, radiating with electron beam or gamma ray with 20-100kGy radiation dose, washing cross-linking silicon rubber, getting pore former, and getting the product. The product can be used in damping, insulation and acoustic material.
Description
Technical field
The present invention relates to a kind of open-cells silicon rubber foam material and its production and use, belong to field of high polymer material processing.
Background technology
Silicon rubber foam material is a silicon rubber through the porousness macromolecular material of foaming back preparation, can be divided into closed pore, perforate and mix aperture silicon rubber foam according to the difference of foam structure.Silicon rubber foam material is incorporated into one with the characteristic of silicon rubber and foam materials, the good characteristic that not only has silicon rubber, also have characteristics such as good anti-high energy impact and sound-insulating and heat-insulating, can be used as sealing, damping, sound insulation and material such as heat insulation, increasingly extensive in the application in fields such as communications and transportation, oil, chemical industry, electronic industry and aerospace.
The method for preparing foam materials has two kinds, i.e. chemical foaming and physical blowing, Xin Yan, Ma Yuzhen, Yao Wei, a kind of novel method of preparation perforate silicon rubber foam, " specialty elastomer goods ", 2001,22 (3): 32～34.Chemical foaming is to add whipping agent in silicon rubber, by heating whipping agent is decomposed then, makes silicon rubber foam material.The silicon rubber foam of chemical foaming preparation is generally closed-cell materials, and the foamable reaction of its non-chain type makes cell size, foam structure, the density uniformity of material all be difficult to control; Physical blowing is with after being filled with the rubber vulcanization typing of inorganic pore former, with solvent inorganic pore former dissolved is come out, and obtains the open cell type foam materials.The aperture of foam materials, density depend on the particle diameter and the content of the pore former of adding, and the material mechanical performance homogeneity depends on complete processing, and material shape, size depend on hot pressing die.
Adopt the dissolved legal system to be equipped with silicon rubber foam material, traditional vulcanization process is to adopt peroxide crosslinking, the energy consumption height, and the free radical passivation that acidic substance and the easy material that produces hydrogen make superoxide produce easily reduces cross-linking efficiency; In addition, the homogeneity of peroxide crosslinking is subjected to the influence of its dispersion state in silicon rubber, because the silicon rubber thermal conduction is poor, inside is heated and is slower than the top layer, often causes the top layer of sizing material and internal crosslinking degree varies to cause; And superoxide is residual also can cause goods later stage degradation, mechanical properties decrease.
Summary of the invention
The objective of the invention is provides a kind of open-cells silicon rubber foam material and preparation method thereof at the deficiencies in the prior art.Be characterized in silicon rubber is mixed with strengthening agent, constitution controller, pore former, additional crosslinker and moulding, silicon rubber generation crosslinking reaction after electron beam or gamma-rays radiation, then cross-linked silicone rubber is gone out pore former by the washing dissolved, obtain the perforate silicon rubber foam material.
Purpose of the present invention is realized that by following technical measures wherein said raw material umber is parts by weight except that specified otherwise.
The recipe ingredient of open-cells silicon rubber foam material is: 100 parts in silicon rubber, 15～80 parts of strengthening agents, 2～15 parts of constitution controllers, 150～300 parts of pore formers, 0～4 part of additional crosslinker;
Silicon rubber is at least a in dimethyl silicone rubber, methyl vinyl silicone rubber and/or the methyl phenyl vinyl silicone rubber;
Strengthening agent is precipitated silica or thermal silica;
Constitution controller is any one in hydroxy silicon oil, Diphenylsilanediol, hexamethyldisilazane, octamethylcyclotetrasiloxane or the γ-An Bingjisanyiyangjiguiwan;
Pore former is any one in urea, Repone K, sodium-chlor or the saltpetre;
Additional crosslinker is any one in trimethylolpropane trimethacrylate (TMPTMA), cyanacrylate (TAIC) or the triallylcyanurate (TAC);
The preparation method of open-cells silicon rubber foam material:
1, the preparation of silicone rubber compounds
With the silicon rubber of 100 weight parts, the strengthening agent of 15～80 weight parts, the constitution controller of 2～15 weight parts, adopt mill or Banbury mixer at room temperature mixing evenly, mixing time is 8～15 minutes, again the sizing material that mixes was deposited under room temperature 1～30 day, 150～180 ℃ of following thermal treatments of temperature 1～5 hour, back mixing and to add the additional crosslinker of pore former, 0～4 weight part of 150～300 weight parts mixing evenly then, mixing time is 8～15 minutes, is sheet material with the sizing material that mixes is molded under room temperature at last;
2, the radiation crosslinking of silicon rubber sheet material
Adopt
60Co gamma-radiation source or electron electrostatic accelerator at room temperature carry out radiation to the silicon rubber sheet material in the air, and radiation dose is 20～100kGy, make silicon rubber generation crosslinking reaction;
3, the dissolved pore-forming of radiation crosslinking silicon rubber
Radiation crosslinking silicon rubber is positioned in the boiling water, and pore former is shifted out in washing, places baking oven then, in 40～50 ℃ of oven dry down of temperature, obtains open-cells silicon rubber foam material.
The open-cells silicon rubber foam material that makes has excellent comprehensive performances, detailed being shown in Table 1,
The present invention has following advantage: technology is simple, and is easy and simple to handle, and cost is lower, and the open-cells silicon rubber foam material that makes has excellent comprehensive performances.
Embodiment
Below by embodiment the present invention is carried out concrete description; be necessary to be pointed out that at this following examples can only be used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of the invention described above.
Embodiment:
1, with 100 gram dimethyl silicone rubbers, 15 gram thermal silicas, 2 gram hydroxy silicon oil, adopt at room temperature mixing 8 minutes of two roller mills, again with the sizing material that mixes after depositing 1 day under the room temperature, 150 ℃ of following thermal treatments of temperature 5 hours, back mixing also adds 150 gram urea, 4 gram cyanacrylates, it is mixing that evenly mixing time is 8 minutes, then under the room temperature on vulcanizing press compression molding be shaped to sheet material; Adopt the right cylinder formula
60The Co gamma ray projector at room temperature in the air, carries out radiation crosslinking to silicone rubber compounds, and radiation dose is 30kGy.Film after crosslinked is immersed in the boiling water, wash out pore former wherein after, place baking oven in the oven dry down of 40～50 ℃ of temperature.
2, with 100 gram methyl vinyl silicone rubbers, 25 gram thermal silicas, 7 gram octamethylcyclotetrasiloxanes, adopted Banbury mixer at room temperature mixing 10 minutes, with the sizing material that mixes after depositing 3 days under the room temperature in 170 ℃ of following thermal treatments 1 hour, back mixing also adds 200 gram Repone K, 4 gram triallylcyanurate, mixing even, mixing time is 10 minutes, then under the room temperature on vulcanizing press compression molding be shaped to sheet material; Adopt JJ-2 type electrostatic accelerator, at room temperature in the air, silicone rubber compounds is carried out radiation crosslinking, radiation dose is 20kGy.Film after crosslinked is immersed in the boiling water, wash out pore former wherein after, place baking oven in the oven dry down of 40～50 ℃ of temperature.
3, with 50 gram methyl vinyl silicone rubbers, 50 gram dimethyl silicone rubbers, 35 gram thermal silicas, 10 gram Diphenylsilanediols, adopt at room temperature mixing 12 minutes of two roller mills, with the sizing material that mixes after depositing 7 days under the room temperature in 170 ℃ of following thermal treatments 3 hours, back mixing also adds 250 gram sodium-chlor, 2 gram trimethylolpropane trimethacrylates, mixing evenly, mixing time is 10 minutes, then under the room temperature on vulcanizing press compression molding be shaped to sheet material; Adopt right cylinder formula Co
60Gamma ray projector at room temperature in the air, carries out radiation crosslinking to silicone rubber compounds, and radiation dose is 50kGy.Film after crosslinked is immersed in the boiling water, wash out pore former wherein after, place baking oven in the oven dry down of 40～50 ℃ of temperature.
4, with 100 gram methyl phenyl vinyl silicone rubbers, 80 gram precipitated silicas, 12 gram γ-An Bingjisanyiyangjiguiwans, adopt at room temperature mixing 15 minutes of two roller mills, with the sizing material that mixes after depositing 30 days under the room temperature in 180 ℃ of following thermal treatments 3 hours, back mixing also adds 300 gram saltpetre, mixing even, mixing time is 12 minutes, then under the room temperature on vulcanizing press compression molding be shaped to sheet material.Adopt JJ-2 type electrostatic accelerator, at room temperature in the air, silicone rubber compounds is carried out radiation crosslinking, radiation dose is 100kGy.Film after crosslinked is immersed in the boiling water, wash out pore former wherein after, place baking oven in the oven dry down of 40～50 ℃ of temperature.
The performance of table 1 open-cells silicon rubber foam material of the present invention
| Sample | Density (g/cm 3) | Percentage of open area (%) | Tensile strength (MPa) | Elongation at break (%) | Compressive strength, 30% (kPa) | Compression set, compression 30%@70 ℃ * 22h (%) |
| Foam materials 1 foam materials 2 foam materialss 3 | 0.69 0.62 0.55 | 85 88 90 | 0.55 0.71 0.76 | 380 468 390 | 190 390 80 | 3.7 2.4 4.0 |
Claims (8)
1, a kind of open-cells silicon rubber foam material is characterized in that the recipe ingredient of this foam materials is by weight: 100 parts in silicon rubber, 15～80 parts of strengthening agents, 2～15 parts of constitution controllers, 150～300 parts of pore formers, 0～4 part of additional crosslinker; The foam density of this foam materials is 0.55～0.70g/cm
3, tensile strength is that 0.55～0.76MPa, elongation at break are 380～460%, compressive strength is 80～390kPa, compression set is less than 5%.
2,, it is characterized in that silicon rubber is at least a in dimethyl silicone rubber, methyl vinyl silicone rubber and/or the methyl phenyl vinyl silicone rubber according to the described open-cells silicon rubber foam material of claim 1.
3,, it is characterized in that strengthening agent is precipitated silica or thermal silica according to the described open-cells silicon rubber foam material of claim 1.
4,, it is characterized in that constitution controller is any one in hydroxy silicon oil, Diphenylsilanediol, hexamethyldisilazane, octamethylcyclotetrasiloxane or the γ-An Bingjisanyiyangjiguiwan according to the described open-cells silicon rubber foam material of claim 1.
5,, it is characterized in that pore former is any one in urea, Repone K, sodium-chlor or the saltpetre according to the described open-cells silicon rubber foam material of claim 1.
6,, it is characterized in that additional crosslinker is any one in trimethylolpropane trimethacrylate, cyanacrylate or the triallylcyanurate according to the described open-cells silicon rubber foam material of claim 1.
7, according to the preparation method of the described open-cells silicon rubber foam material of one of claim 1～6, it is characterized in that:
A. the preparation of silicone rubber compounds
With the silicon rubber of 100 weight parts, the strengthening agent of 15～80 weight parts, the constitution controller of 2～15 weight parts, adopt mill or Banbury mixer at room temperature mixing evenly, mixing time is 8～15 minutes, again the sizing material that mixes was deposited under room temperature 1～30 day, in 150～180 ℃ of thermal treatments of temperature 1～5 hour, back mixing and to add the additional crosslinker of pore former, 0～4 weight part of 150～300 weight parts mixing evenly then, mixing time is 8～15 minutes, is sheet material with the sizing material that mixes is molded under room temperature at last;
B. the radiation crosslinking of silicon rubber sheet material
Adopt
60Co gamma-radiation source or electron electrostatic accelerator at room temperature carry out radiation to the silicon rubber sheet material in the air, and radiation dose is 20～100kGy, make silicon rubber generation crosslinking reaction;
C. the dissolved pore-forming of radiation crosslinking silicon rubber
Radiation crosslinking silicon rubber is positioned in the boiling water, and pore former is shifted out in washing, places baking oven then, in 40～50 ℃ of oven dry of temperature, obtains open-cells silicon rubber foam material.
8,, it is characterized in that this foam materials is as damping, insulation, sound-proof material according to the purposes of the described open-cells silicon rubber foam material of claim 1.
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| CN 200610021103 CN1884378A (en) | 2006-06-05 | 2006-06-05 | Open- cells silicon rubber foam material and its preparation process and use |
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| CN 200610021103 CN1884378A (en) | 2006-06-05 | 2006-06-05 | Open- cells silicon rubber foam material and its preparation process and use |
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| CN102260409A (en) * | 2010-05-29 | 2011-11-30 | 比亚迪股份有限公司 | Silicon foaming adhesive composition and preparation method, silicon foaming adhesive and ultrasonic sensor |
| CN102618038A (en) * | 2012-03-28 | 2012-08-01 | 湖北航天化学技术研究所 | Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board |
| CN102634295A (en) * | 2012-04-19 | 2012-08-15 | 长春中科应化特种材料有限公司 | Insulation high-temperature-resistant pressure-sensitive adhesive tap and preparation method thereof |
| CN103225201A (en) * | 2013-05-13 | 2013-07-31 | 武汉纺织大学 | Method for preparing fabric suitable for making outdoor training clothes |
| US9017771B2 (en) | 2008-10-29 | 2015-04-28 | 3M Innovative Properties Company | Gentle to skin adhesive |
| CN104744946A (en) * | 2015-04-16 | 2015-07-01 | 中国工程物理研究院核物理与化学研究所 | High-temperature-resistant silicone rubber foam material and preparation method thereof |
| CN104788967A (en) * | 2015-04-16 | 2015-07-22 | 中国工程物理研究院核物理与化学研究所 | Silicone rubber microporous foam material adopting mixed cellular structure and preparation method of silicone rubber microporous foam material |
| CN104893312A (en) * | 2015-07-01 | 2015-09-09 | 中国工程物理研究院核物理与化学研究所 | Composite enhanced high-flexibility microporous silicone rubber foam material and preparation method thereof |
| CN104910631A (en) * | 2015-05-15 | 2015-09-16 | 中国工程物理研究院核物理与化学研究所 | Color silicone rubber foamed material, preparation method therefor and applications |
| CN105504820A (en) * | 2016-01-07 | 2016-04-20 | 东莞市日源盛橡胶绝缘制品有限公司 | Formula and preparation method of conductive silica gel foam material |
| US9359529B2 (en) | 2008-10-29 | 2016-06-07 | 3M Innovative Properties Company | Electron beam cured silicone materials |
| CN106336668A (en) * | 2016-09-29 | 2017-01-18 | 中国工程物理研究院核物理与化学研究所 | Self-adhesion silicone rubber foam material and preparation method thereof |
| CN106433139A (en) * | 2016-09-29 | 2017-02-22 | 中国工程物理研究院核物理与化学研究所 | Low-density and high-porosity silicone rubber foam material and preparation method thereof |
| CN106519702A (en) * | 2016-10-25 | 2017-03-22 | 中国工程物理研究院化工材料研究所 | Composition and method for manufacturing pored silicone rubber sponge |
| CN112662186A (en) * | 2020-12-10 | 2021-04-16 | 中国工程物理研究院核物理与化学研究所 | Heat-resistant compression-resistant silicone rubber foam material and preparation method thereof |
| WO2023151325A1 (en) * | 2022-02-09 | 2023-08-17 | 海南摩尔兄弟科技有限公司 | Hydrophobic porous silicone rubber and preparation method therefor, atomizer, and electronic atomization device |
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2006
- 2006-06-05 CN CN 200610021103 patent/CN1884378A/en active Pending
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| US9359529B2 (en) | 2008-10-29 | 2016-06-07 | 3M Innovative Properties Company | Electron beam cured silicone materials |
| US9017771B2 (en) | 2008-10-29 | 2015-04-28 | 3M Innovative Properties Company | Gentle to skin adhesive |
| CN102232103B (en) * | 2008-10-29 | 2016-07-06 | 3M创新有限公司 | The organosilicon material of electronic beam curing |
| CN102260409A (en) * | 2010-05-29 | 2011-11-30 | 比亚迪股份有限公司 | Silicon foaming adhesive composition and preparation method, silicon foaming adhesive and ultrasonic sensor |
| CN102260409B (en) * | 2010-05-29 | 2012-12-19 | 比亚迪股份有限公司 | Silicon foaming adhesive composition and preparation method, silicon foaming adhesive and ultrasonic sensor |
| CN102618038B (en) * | 2012-03-28 | 2013-09-18 | 湖北航天化学技术研究所 | Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board |
| CN102618038A (en) * | 2012-03-28 | 2012-08-01 | 湖北航天化学技术研究所 | Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board |
| CN102634295A (en) * | 2012-04-19 | 2012-08-15 | 长春中科应化特种材料有限公司 | Insulation high-temperature-resistant pressure-sensitive adhesive tap and preparation method thereof |
| CN103225201A (en) * | 2013-05-13 | 2013-07-31 | 武汉纺织大学 | Method for preparing fabric suitable for making outdoor training clothes |
| CN104744946A (en) * | 2015-04-16 | 2015-07-01 | 中国工程物理研究院核物理与化学研究所 | High-temperature-resistant silicone rubber foam material and preparation method thereof |
| CN104788967A (en) * | 2015-04-16 | 2015-07-22 | 中国工程物理研究院核物理与化学研究所 | Silicone rubber microporous foam material adopting mixed cellular structure and preparation method of silicone rubber microporous foam material |
| CN104788967B (en) * | 2015-04-16 | 2018-02-27 | 中国工程物理研究院核物理与化学研究所 | A kind of silicon rubber microporous foamed material of mixed type foam structure and preparation method thereof |
| CN104744946B (en) * | 2015-04-16 | 2017-06-27 | 中国工程物理研究院核物理与化学研究所 | A kind of high temperature resistant type silicon rubber foam material and preparation method thereof |
| CN104910631B (en) * | 2015-05-15 | 2017-11-07 | 中国工程物理研究院核物理与化学研究所 | A kind of colored silicon rubber foam material and its production and use |
| CN104910631A (en) * | 2015-05-15 | 2015-09-16 | 中国工程物理研究院核物理与化学研究所 | Color silicone rubber foamed material, preparation method therefor and applications |
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| CN104893312B (en) * | 2015-07-01 | 2017-12-29 | 中国工程物理研究院核物理与化学研究所 | A kind of composite enhanced high flexibility microporous silicon rubber foam material and preparation method thereof |
| CN105504820A (en) * | 2016-01-07 | 2016-04-20 | 东莞市日源盛橡胶绝缘制品有限公司 | Formula and preparation method of conductive silica gel foam material |
| CN106336668A (en) * | 2016-09-29 | 2017-01-18 | 中国工程物理研究院核物理与化学研究所 | Self-adhesion silicone rubber foam material and preparation method thereof |
| CN106433139A (en) * | 2016-09-29 | 2017-02-22 | 中国工程物理研究院核物理与化学研究所 | Low-density and high-porosity silicone rubber foam material and preparation method thereof |
| CN106519702B (en) * | 2016-10-25 | 2019-04-23 | 中国工程物理研究院化工材料研究所 | The method for being used to prepare the composition and preparation aperture silicone sponge of aperture silicone sponge |
| CN106519702A (en) * | 2016-10-25 | 2017-03-22 | 中国工程物理研究院化工材料研究所 | Composition and method for manufacturing pored silicone rubber sponge |
| CN112662186A (en) * | 2020-12-10 | 2021-04-16 | 中国工程物理研究院核物理与化学研究所 | Heat-resistant compression-resistant silicone rubber foam material and preparation method thereof |
| WO2023151325A1 (en) * | 2022-02-09 | 2023-08-17 | 海南摩尔兄弟科技有限公司 | Hydrophobic porous silicone rubber and preparation method therefor, atomizer, and electronic atomization device |
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