CN103409103A - Environment-friendly high-temperature-resistant organic silicon pressure-sensitive adhesive and preparation method thereof - Google Patents
Environment-friendly high-temperature-resistant organic silicon pressure-sensitive adhesive and preparation method thereof Download PDFInfo
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Abstract
The invention provides an environment-friendly high-temperature-resistant organic silicon pressure-sensitive adhesive, which is prepared through the reaction among the following components in parts by weight: 30-50 parts of organic silicon rubber, 50-70 parts of MQ organic silicon resin, 0.01-0.1 part of a catalyst and 60-70 parts of a solvent, wherein the solvent is an ester with low molecular weight. According to the environment-friendly high-temperature-resistant organic silicon pressure-sensitive adhesive, the ester with low molecular weight, such as acetic ether, can be used as a solvent, the main reason is that when sodium silicate is used for preparing the QM organic silicon resin, the sodium silicate is purified at first to prepare sodium silicate, then the sodium silicate is used for preparing the MQ organic silicon resin, the MQ organic silicon resin prepared by the method can not generate gel, and the number-average molecular weight of the prepared MQ organic silicon resin is large, and the MQ organic silicon resin can improve the compatibility and adhesive force of the pressure-sensitive adhesive, so that during the preparation of the organic silicon pressure-sensitive adhesive, the acetic ether can be used as a solvent to ensure that the pressure-sensitive adhesive is transparent, environment-friendly and nontoxic.
Description
Technical field
The present invention relates to the organic pressure-sensitive gel field, more specifically, relate to a kind of environment-friendly type thermostable organic silicon pressure-sensitive adhesive and preparation method thereof.
Background technology
Organic silicon pressure-sensitive adhesive (PSA) is a kind of leather hard that can be in for a long time the viscoelastic state, and can keep the special adhesive of perennity cementability, and only need apply finger pressure can stick to substrate surface securely.Organic silicon pressure-sensitive adhesive especially all has good use properties under high temperature (260 ℃) and low temperature (73 ℃), in addition, also have extraordinary electrical property, corrosion-free to metal, to the skin nonirritant; Main as heat resistant adhesive tape, low temperature resistant adhesive tape, H level electrical insulating tape, fire-resistant wires mica tape, circuit base plate wave soldering screened film, plating masking belt, medical adhesive tape etc., development along with human sciences's technology, requirement to the material high-low temperature resistant day by day manifests, and particularly the viscosity of holding of pressure sensitive adhesive under high/low temperature condition has been proposed to very high requirement.
Yet mainly take on the market at present the organic silicon pressure-sensitive adhesive of methyl type as main, is mainly by methyl silicone rubber rubber and methyl MQ silicone resin, to carry out condensation reaction to form, and this pressure-sensitive adhesive can't meet the requirement of high-low temperature resistant on lasting cementability.
Simultaneously, most organic silicon pressure-sensitive adhesives are solvent-borne types, and are all to use solvent that the toxicity such as toluene or dimethylbenzene are stronger as thinner, are that people produce or use and can bring injury to human body, and the polluted air environment.
Summary of the invention
The object of the present invention is to provide a kind of free of contamination organic silicon pressure-sensitive adhesive.
According to goal of the invention, the invention provides a kind of environment-friendly type thermostable organic silicon pressure-sensitive adhesive, by the component reaction of following weight part, be prepared from:
30 ~ 50 parts of organo-silicone rubbers,
50 ~ 70 parts of MQ silicone resins,
0.01 ~ 0.1 part of catalyzer,
60 ~ 70 parts of solvents,
Described solvent is the low-molecular-weight ester class; Water glass in the synthesis material of described MQ silicone resin is through purification process.
The number-average molecular weight of described MQ silicone resin is that the mol ratio of 6000 ~ 15000, M/Q is 0.7 ~ 0.9.
Described organo-silicone rubber is the line style polydimethyl phenyl siloxane of end group for take hydroxyl, and its molecular formula is: HO (Me
2SiO)
a(MePhSiO)
bH, its relative molecular weight are 650,000 ~ 800,000, and its hydroxy radical content is 0.01 ~ 0.1 %.
Solvent of the present invention is the low-molecular-weight ester class, as acetic acid acetic acid, butylacetate etc., has any different in traditional organic silicon pressure-sensitive adhesive solvent for use: as toluene, dimethylbenzene etc.As organic solvent, not only dissolving power is very strong, and toxicity is also large because of toluene or dimethylbenzene.Also just because of its dissolving power is strong, the gel also some produced in reaction process simultaneously or the impurity of indissoluble also are dissolved in product, and result has affected the partial properties of organic pressure-sensitive gel.Because when with water glass, producing the MQ silicone resin, be easy to produce the gel that is insoluble to usual vehicle, when with these MQ silicone resins with a large amount of gels, making organic silicon pressure-sensitive adhesive, as by other low-toxic solvents such as ethyl acetate etc., the pressure sensitive adhesive of producing is not only opaque, and performance is also poor, while only having with toluene or dimethylbenzene, pressure-sensitive adhesive is just transparent, therefore, have to use toluene or dimethylbenzene to produce pressure-sensitive adhesive.
The present invention can use low-molecular-weight ester class such as ethyl acetate to make solvent, when major cause is to produce the MQ silicone resin with water glass, first water glass is purified and produced water glass, recycle silicon acid sodium is produced the MQ silicone resin, the MQ silicone resin that this method makes can not produce gel, and the number-average molecular weight of the MQ silicone resin made is large, this resin can improve consistency and the adhesive power of pressure sensitive adhesive, also therefore when producing organic pressure-sensitive gel, can use ethyl acetate as solvent, not only transparent but also environment-protecting asepsis.
The molecular weight of organo-silicone rubber is larger, and the cohesive strength of pressure sensitive adhesive is just larger, just better to adhesive power and the bonding strength of base material, also just better to high-low temperature resistant.The contrast of the present invention and prior art, can be with the very large organo-silicone rubber of molecular weight, since very poor with the consistency of the organo-silicone rubber of the MQ silicone resin of a large amount of gels and high molecular, can only be compatible with low-molecular-weight organo-silicone rubber; The MQ silicone resin that there is no a gel still has good consistency with the large organo-silicone rubber of molecular weight, therefore can make solvent by ethyl acetate.
Described solvent is ethyl acetate or butylacetate.
Described MQ silicone resin by weight, is prepared from by following component reaction:
Water glass after purifying: 14.0 parts of vitriol oils: 3.0 ~ 5.0 parts of ethanol: 10 ~ 20 parts
Tetramethyl divinyl disiloxane: 0.5 ~ 1.0 part of hexamethyldisiloxane: 4.0 ~ 8.0 parts
Deionized water: 40.0 ~ 50.0 parts of ethyl acetate: 20.0 ~ 30.0 parts
Wherein, water glass is as the Q group of synthetic MQ silicone resin, the condensation that can self be hydrolyzed under lesser temps and acidic conditions, and condensation also can be hydrolyzed with the siloxanes of M group; Hexamethyldisiloxane is as the M group of synthetic MQ silicone resin, can with the condensation that is hydrolyzed of Q group, for the MQ silicone resin provides methyl, carry out end-blocking, so as the molecular weight, M/Q of controlling product than and solvability; Tetramethyl divinyl disiloxane is as the M group of synthetic MQ silicone resin, can with the condensation that is hydrolyzed of Q group, be the raw material sources of the vinyl of MQ silicone resin; The vitriol oil is that concentration is the sulfuric acid of 96 ~ 99 %, and it provides hydrolysis-condensation reaction required acidic conditions mainly as catalyzer; Ethanol and deionized water, as reaction medium, for the fierce degree of controlled hydrolysis condensation reaction, reduce the generation of hydrolysis-condensation reaction gel, improve the quantity and quality of product, also for the MQ silicone resin, provide hydroxyl simultaneously; Ethyl acetate, as solvent, be used to dissolving raw material and product, makes product and the separating substances such as acid, water.
The preparation method of described MQ silicone resin comprises following two steps:
S1. the purifying of described water glass: in the reactor that band stirs by water glass (for purifying after water glass distinguish, here refer in particular to unpurified water glass), deionized water, ethanol in proportion 1:1:1 after mixing, add reactor, rapid stirring 30 ~ 40 minutes, standing 20 ~ 30 minutes, removing liquid impurity and weight-average molar mass is the following ethanolic soln of 500g/mol, and obtaining sedimentable matter is water glass.
S2. producing of MQ silicone resin: in reactor, by each weight part described above, add the part deionized water, the vitriol oil, ethanol, after stirring, add by the water glass of step S1 gained and the mixed solution of remainder deionized water, temperature of reaction is controlled at 50 ~ 55 ℃, rapid stirring 30 ~ 50 minutes, then by each weight part claimed in claim 5, add hexamethyldisiloxane and tetramethyl divinyl disiloxane, be warming up to again 60 ~ 65 ℃ and continue reaction 2 ~ 5 hours, stop heating, add ethyl acetate solvent, stirred 30 ~ 60 minutes, remove lower floor's sour water, getting the upper strata product washes, filter and drying and processing, obtain.
The advantage of the preparation method of described MQ silicone resin is, described method can be produced the large and MQ silicone resin that do not have gel to produce of molecular weight, and pressure sensitive adhesive is had to extraordinary viscosifying action.
Described catalyzer is strong alkali catalyst.
A kind of preparation method of environment-friendly type thermostable organic silicon pressure-sensitive adhesive is provided as required again, by above-mentioned weight part, organo-silicone rubber and MQ silicone resin is added in solvent, then splash into catalyzer, stirring is warming up to reflux temperature, reacts 6 ~ 8 hours, cooling and get final product.
Described reflux temperature is 95 ~ 102 ℃.
Beneficial effect of the present invention is as follows:
1. at production process and product, all use the lower molecular weight esters solvent of environmental protection low toxicity, reduce human body is damaged;
2. good bonding force is still arranged during high temperature (as 260 ℃);
3. the solid content of organic silicon pressure-sensitive adhesive, up to 60%, has further reduced pollution on the environment;
4. prepared MQ silicone resin does not have gel, thereby makes solvent of the present invention can select the lower molecular weight esters solvent.
Embodiment
Below in conjunction with specific embodiment, further describe the present invention.Unless stated otherwise, reagent, equipment and the method for the present invention's employing are the conventional commercial reagent of the art, equipment and the conventional method of using.
Embodiment 1
S1. the preparation of water glass:
In the reactor that a band stirs, add 180g water glass, 180g deionized water, 180g ethanol to mix, rapid stirring is after 30 minutes, standing 20 minutes, removing liquid impurity and weight-average molar mass is the following ethanolic soln of 500g/mol, obtains throw out water glass 140g.
S2. producing of MQ silicone resin:
In a four-hole boiling flask that water-and-oil separator and prolong be housed, by each weight part claimed in claim 5, add the 120g deionized water, the 50g vitriol oil, 100g ethanol, after stirring and mixing in 10 minutes, add by the water glass 140g of step S1 gained and the mixed solution of residue 280g deionized water, temperature of reaction is controlled at 55 ℃, rapid stirring 50 minutes, then by each weight part claimed in claim 5, add 40g hexamethyldisiloxane and 5g tetramethyl divinyl disiloxane, be warming up to again 65 ℃ and continue reaction 5 hours, stop heating, add the 200g ethyl acetate solvent, stirred 60 minutes, after standing, remove lower floor's sour water, getting the upper strata product washes, filter and drying and processing (ethyl acetate recycling), obtaining number-average molecular weight is 15000, the vinyl massfraction is 2%, M/Q is than the MQ silicone resin 80g that is 0.7.
S3. the preparation of organic silicon pressure-sensitive adhesive:
In a four-hole boiling flask that water-and-oil separator and prolong be housed, add in molecule and contain methyl and phenyl, and the phenyl molar fraction is 6%, molecular weight is 650,000 hydroxy-end capped organo-silicone rubber 30g, adds the 30g ethyl acetate, stirs and makes to dissolve fully; Then adding number-average molecular weight is that the mol ratio of 15000, M/Q is the MQ silicone resin 70g of 0.7:1, and the 37g ethyl acetate, after both dissolve fully, add 0.02g potassium hydroxide, start heating, after temperature reaches reflux temperature, insulation reaction 6 hours, stopped heating and stirring, cooling, discharging, namely obtain required environment-friendly type organosilicon pressure-sensitive adhesive, the product solids content is 60% after testing.
Embodiment 2
S1. the preparation of water glass:
In the reactor that a band stirs, add 180g water glass, 180g deionized water, 180g ethanol to mix, rapid stirring is after 35 minutes, standing 25 minutes, removing liquid impurity and weight-average molar mass is the following ethanolic soln of 500g/mol, obtains throw out water glass 140g.
S2. producing of MQ silicone resin:
In a four-hole boiling flask that water-and-oil separator and prolong be housed, by each weight part claimed in claim 5, add the 220g deionized water, the 30g vitriol oil, 200g ethanol, after stirring and mixing in 10 minutes, add by the water glass 140g of step S1 gained and the mixed solution of residue 280g deionized water, temperature of reaction is controlled at 50 ℃, rapid stirring 30 minutes, then by each weight part claimed in claim 5, add 80g hexamethyldisiloxane and 10g tetramethyl divinyl disiloxane, be warming up to again 60 ℃ and continue reaction 2 hours, stop heating, add the 300g ethyl acetate solvent, stirred 30 minutes, after standing, remove lower floor's sour water, getting the upper strata product washes, filter and drying and processing (ethyl acetate recycling), obtaining number-average molecular weight is 6000, the vinyl massfraction is 2%, M/Q is than the MQ silicone resin 90g that is 0.9.
S3. the preparation of organic silicon pressure-sensitive adhesive:
In a four-hole boiling flask that water-and-oil separator and prolong be housed, add in molecule and contain methyl and phenyl, and the phenyl molar fraction is 12%, molecular weight is 800,000 hydroxy-end capped organo-silicone rubber 50g, adds the 50g ethyl acetate, stirs and makes to dissolve fully; Then adding number-average molecular weight is that the mol ratio of 6000, M/Q is the MQ silicone resin 50g of 0.9:1, and the 17g ethyl acetate, after both dissolve fully, add 0.05g potassium hydroxide, start heating, after temperature reaches reflux temperature, insulation reaction 8 hours, stopped heating and stirring, cooling, discharging, namely obtain required environment-friendly type organosilicon pressure-sensitive adhesive, the product solids content is 60% after testing.
Embodiment 3:
S1. the preparation of water glass:
In the reactor that a band stirs, add 180g water glass, 180g deionized water, 180g ethanol to mix, rapid stirring is after 40 minutes, standing 30 minutes, removing liquid impurity and weight-average molar mass is the following ethanolic soln of 500g/mol, obtains throw out water glass 140g.
S2. producing of MQ silicone resin:
In a four-hole boiling flask that water-and-oil separator and prolong be housed, by each weight part claimed in claim 5, add the 170g deionized water, the 40g vitriol oil, 150g ethanol, after stirring and mixing in 10 minutes, add by the water glass 140g of step S1 gained and the mixed solution of residue 280g deionized water, temperature of reaction is controlled at 53 ℃, rapid stirring 40 minutes, then by each weight part claimed in claim 5, add 60g hexamethyldisiloxane and 8g tetramethyl divinyl disiloxane, be warming up to again 63 ℃ and continue reaction 3.5 hours, stop heating, add the 250g ethyl acetate solvent, stirred 45 minutes, after standing, remove lower floor's sour water, getting the upper strata product washes, filter and drying and processing (ethyl acetate recycling), obtaining number-average molecular weight is 10000, the vinyl massfraction is 2%, M/Q is than the MQ silicone resin 84g that is 0.8.
S3. the preparation of organic silicon pressure-sensitive adhesive
In a four-hole boiling flask that water-and-oil separator and prolong be housed, add in molecule and contain methyl and phenyl, and the phenyl molar fraction is 10%, molecular weight is 700,000 hydroxy-end capped organo-silicone rubber 40g, adds the 40g ethyl acetate, stirs and makes to dissolve fully; Then adding number-average molecular weight is that the mol ratio of 10000, M/Q is the MQ silicone resin 60g of 0.8:1, and the 27g ethyl acetate, after both dissolve fully, add 0.08g potassium hydroxide, start heating, after temperature reaches reflux temperature, insulation reaction 7 hours, stopped heating and stirring, cooling, discharging, namely obtain required environment-friendly type organosilicon pressure-sensitive adhesive, the product solids content is 60% after testing.
The product that embodiment one, embodiment two, embodiment three are obtained, with the viscosity of holding that existing full methyl type organic silicon pressure-sensitive adhesive carries out under differing temps, test, take and hang identical weight and make at one time adhesive tape draw sliding distance to be record data, test data such as following table 1:
Table 1 test data
As can be known from upper table data, variation along with temperature, particularly at high temperature (260 ℃) or low temperature (50 ℃), the viscosity change of holding of tackiness agent of the present invention and existing full methyl type tackiness agent is not quite similar, the viscosity of holding of full methyl type product reduces rapidly when high low temperature, tackiness agent of the present invention still keeps relatively goodly when high low temperature.The introducing of phenyl improves the thermal weight loss temperature of organic pressure-sensitive gel, by product is carried out to the wide-angle x-ray diffraction detection, introduce the degree of crystallinity of the organic silicon pressure-sensitive adhesive of phenyl and be down to 1～2% by 10% left and right of full methyl type product, greatly improve its strand crystallization orientation, improved its mechanical property under high low temperature, thereby the adhesiveproperties of various base materials has been improved.Use simultaneously the lower molecular weight esters solvents such as ethyl acetate, greatly improved VOC value (VOC of toluene limits the quantity of as 0.5mg/ ㎡, and the VOC of ethyl acetate is 10.0mg/ ㎡), have the more superior feature of environmental protection.
Claims (7)
1. an environment-friendly type thermostable organic silicon pressure-sensitive adhesive, is characterized in that, is prepared from by the component reaction of following weight part:
30 ~ 50 parts of organo-silicone rubbers,
50 ~ 70 parts of MQ silicone resins,
0.01 ~ 0.1 part of catalyzer,
60 ~ 70 parts of solvents,
Described solvent is low-molecular-weight ester class;
Water glass in the synthesis material of described MQ silicone resin is through purification process.
2. environment-friendly type thermostable organic silicon pressure-sensitive adhesive according to claim 1, is characterized in that, described solvent is ethyl acetate or butylacetate.
3. the glutinous agent of environment-friendly type thermostable organic pressure-sensitive gel according to claim 1, it is characterized in that, described organo-silicone rubber is the line style polydimethyl phenyl siloxane of end group for take hydroxyl, and its relative molecular weight is 650,000 ~ 800,000, and its hydroxy radical content is 0.01 ~ 0.1 %.
4. environment-friendly type thermostable organic silicon pressure-sensitive adhesive according to claim 1, is characterized in that, described MQ silicone resin by weight, is prepared from by following component reaction:
Water glass after purifying: 14.0 parts of vitriol oils: 3.0 ~ 5.0 parts of ethanol: 10 ~ 20 parts
Tetramethyl divinyl disiloxane: 0.5 ~ 1.0 part of hexamethyldisiloxane: 4.0 ~ 8.0 parts
Deionized water: 40.0 ~ 50.0 parts of ethyl acetate: 20.0 ~ 30.0 parts
5. environment-friendly type thermostable organic silicon pressure-sensitive adhesive according to claim 4, is characterized in that, the preparation method of described MQ silicone resin comprises following two steps:
S1. the purifying of described water glass: in the reactor that band stirs by water glass, deionized water, ethanol in proportion 1:1:1 after mixing, add reactor, rapid stirring 30 ~ 40 minutes, standing 20 ~ 30 minutes, removing liquid impurity and weight-average molar mass is the following ethanolic soln of 500g/mol, and obtaining sedimentable matter is water glass;
S2. producing of MQ silicone resin: in reactor, by each weight part claimed in claim 5, add the part deionized water, the vitriol oil, ethanol, after stirring, add by the water glass of step S1 gained and the mixed solution of remainder deionized water, temperature of reaction is controlled at 50 ~ 55 ℃, rapid stirring 30 ~ 50 minutes, then by each weight part claimed in claim 5, add hexamethyldisiloxane and tetramethyl divinyl disiloxane, be warming up to again 60 ~ 65 ℃ and continue reaction 2 ~ 5 hours, stop heating, add ethyl acetate solvent, stirred 30 ~ 60 minutes, remove lower floor's sour water, getting the upper strata product washes, filter and drying and processing, obtain.
5. environment-friendly type thermostable organic silicon pressure-sensitive adhesive according to claim 1, is characterized in that, described catalyzer is strong alkali catalyst.
6. the preparation method of environment-friendly type thermostable organic silicon pressure-sensitive adhesive according to claim 1, is characterized in that, by weight, organo-silicone rubber and MQ silicone resin are added in solvent, then splash into catalyzer, stir and be warming up to reflux temperature, reacted 6 ~ 8 hours, cooling and get final product.
7. the preparation method of environment-friendly type thermostable organic silicon pressure-sensitive adhesive according to claim 7, is characterized in that, described reflux temperature is 95 ~ 102 ℃.
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|---|---|---|---|---|
| CN105418929A (en) * | 2015-12-30 | 2016-03-23 | 安徽明讯新材料科技股份有限公司 | Method for improving stability of organic silicon pressure-sensitive adhesive for protective film |
| CN105440289A (en) * | 2015-12-30 | 2016-03-30 | 安徽明讯新材料科技股份有限公司 | Method for improving stability of organosilicone pressure-sensitive adhesive |
| CN105601929A (en) * | 2015-12-30 | 2016-05-25 | 安徽明讯新材料科技股份有限公司 | Method for improving stability of organic silicon pressure-sensitive adhesive for protecting film |
| CN106398636A (en) * | 2016-08-31 | 2017-02-15 | 湖北新四海化工股份有限公司 | Environment-friendly organosilicone pressure-sensitive adhesive and preparation method thereof |
| CN109161021A (en) * | 2018-07-06 | 2019-01-08 | 仲恺农业工程学院 | A kind of preparation method of controllable high molecular weight MQ silicone resin |
| CN109553773A (en) * | 2018-10-31 | 2019-04-02 | 莱芜市雅达电子材料有限公司 | A kind of methyl MQ resin and preparation method thereof |
| CN110283566A (en) * | 2019-04-30 | 2019-09-27 | 无锡雅达科技有限公司 | A kind of solvent-less silicone pressure sensitive adhesive and its preparation and application |
| WO2019237601A1 (en) * | 2018-06-15 | 2019-12-19 | 歌尔股份有限公司 | Organosilicon pressure sensitive adhesive and preparation method therefor, composite film structure, vibration film, and sound generating device |
| CN111497385A (en) * | 2020-04-24 | 2020-08-07 | 湖北平安电工股份有限公司 | Mica tape preparation method and mica tape |
| CN114656921A (en) * | 2022-03-31 | 2022-06-24 | 兰州金睿合新材料科技有限责任公司 | Organic silicon pressure-sensitive adhesive and preparation method thereof |
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| CN105440289A (en) * | 2015-12-30 | 2016-03-30 | 安徽明讯新材料科技股份有限公司 | Method for improving stability of organosilicone pressure-sensitive adhesive |
| CN105601929A (en) * | 2015-12-30 | 2016-05-25 | 安徽明讯新材料科技股份有限公司 | Method for improving stability of organic silicon pressure-sensitive adhesive for protecting film |
| CN105418929B (en) * | 2015-12-30 | 2018-06-08 | 安徽明讯新材料科技股份有限公司 | A kind of method for improving protective film silicone pressure sensitive gluing agent stability |
| CN105440289B (en) * | 2015-12-30 | 2018-07-31 | 安徽明讯新材料科技股份有限公司 | A method of improvement silicone pressure sensitive gluing agent stability |
| CN105601929B (en) * | 2015-12-30 | 2018-07-31 | 安徽明讯新材料科技股份有限公司 | A method of improving protective film silicone pressure sensitive gluing agent stability |
| CN105418929A (en) * | 2015-12-30 | 2016-03-23 | 安徽明讯新材料科技股份有限公司 | Method for improving stability of organic silicon pressure-sensitive adhesive for protective film |
| CN106398636A (en) * | 2016-08-31 | 2017-02-15 | 湖北新四海化工股份有限公司 | Environment-friendly organosilicone pressure-sensitive adhesive and preparation method thereof |
| WO2019237601A1 (en) * | 2018-06-15 | 2019-12-19 | 歌尔股份有限公司 | Organosilicon pressure sensitive adhesive and preparation method therefor, composite film structure, vibration film, and sound generating device |
| CN109161021A (en) * | 2018-07-06 | 2019-01-08 | 仲恺农业工程学院 | A kind of preparation method of controllable high molecular weight MQ silicone resin |
| CN109553773A (en) * | 2018-10-31 | 2019-04-02 | 莱芜市雅达电子材料有限公司 | A kind of methyl MQ resin and preparation method thereof |
| CN109553773B (en) * | 2018-10-31 | 2021-08-13 | 济南雅达新材料科技有限公司 | Methyl MQ resin and preparation method thereof |
| CN110283566A (en) * | 2019-04-30 | 2019-09-27 | 无锡雅达科技有限公司 | A kind of solvent-less silicone pressure sensitive adhesive and its preparation and application |
| CN110283566B (en) * | 2019-04-30 | 2021-07-09 | 无锡雅达科技有限公司 | Solvent-free silicone pressure-sensitive adhesive and preparation and application thereof |
| CN111497385A (en) * | 2020-04-24 | 2020-08-07 | 湖北平安电工股份有限公司 | Mica tape preparation method and mica tape |
| CN111497385B (en) * | 2020-04-24 | 2021-06-04 | 湖北平安电工股份有限公司 | Mica tape preparation method and mica tape |
| CN114656921A (en) * | 2022-03-31 | 2022-06-24 | 兰州金睿合新材料科技有限责任公司 | Organic silicon pressure-sensitive adhesive and preparation method thereof |
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