CN115522396A - High-cohesiveness liquid silk-screen silicone rubber and preparation method thereof - Google Patents
High-cohesiveness liquid silk-screen silicone rubber and preparation method thereof Download PDFInfo
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- CN115522396A CN115522396A CN202211224326.3A CN202211224326A CN115522396A CN 115522396 A CN115522396 A CN 115522396A CN 202211224326 A CN202211224326 A CN 202211224326A CN 115522396 A CN115522396 A CN 115522396A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5292—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds containing Si-atoms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65125—Compounds containing ester groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65131—Compounds containing ether or acetal groups
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Abstract
The invention discloses high-cohesiveness liquid silk-screen silicone rubber which comprises vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica, a solvent, a silane coupling agent, hydrogen-containing silicone oil, a platinum catalyst and an inhibitor; also discloses a preparation method of the high-cohesiveness liquid silk-screen silicone rubber. According to the invention, vinyl-terminated methyl vinyl silicone oil and hydroxyl-terminated methyl vinyl silicone oil are creatively added to increase the polar groups in the silk-screen silicone rubber, and based on the synergistic effect of a silane coupling agent, when the silk-screen silicone rubber is cured and crosslinked, the polar groups and the silane coupling agent react with the polar groups on the surface of the cloth, so that a stable structure with strong bonding force is formed on the surfaces of the silk-screen silicone rubber and the cloth, the bonding effect of the base material with poor bonding force is optimized, the problem of poor bonding between the traditional liquid silicone rubber and various cloth is solved, and the silk-screen silicone rubber has wide application in the printing industry.
Description
Technical Field
The invention relates to the technical field of silk-screen silicone rubber, in particular to high-cohesiveness liquid silk-screen silicone rubber and a preparation method thereof.
Background
The garment fabric printing is a common traditional process in daily life, the materials applied in the traditional fabric printing are TPU printing ink, acrylic rubber paste and the like, the materials have the defects of hard handfeel, poor elasticity, poor weather resistance and the like in proportion, at present, the printing of many high-end garments adopts liquid silicon rubber to replace the rubber paste, but the liquid silicon rubber has poor adhesion to fabrics such as nylon, spandex, terylene and the like, the printing effect is poor, and the liquid silicon rubber is easy to fall off, so that the liquid silicon rubber has great printing limitation to most of the fabrics. Therefore, there is a need to develop a silk-screen silicone rubber with good adhesion to optimize the adhesion to the fabric.
Disclosure of Invention
In order to overcome the technical problems, the invention discloses high-cohesiveness liquid silk-screen silicone rubber and a preparation method thereof.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a high-cohesiveness liquid silk-screen silicone rubber comprises the following raw materials: vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica, a solvent, a silane coupling agent, hydrogen-containing silicone oil, a platinum catalyst and an inhibitor;
wherein the total mass of the hydroxyl-terminated methyl vinyl silicone oil and the fumed silica is 0.05-0.2 time of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the solvent is 1 to 5 times of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the silane coupling agent is 1-10% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the hydrogen-containing silicone oil is 2-10% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the platinum catalyst is 0.1-2% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the inhibitor is 0.01-0.1% of the total mass of the vinyl-terminated methyl vinyl silicone oil.
The molecular formula of the vinyl-terminated methyl vinyl silicone oil is ViMe 2 SiO(Me 2 SiO) n SiMe 2 Vi；
Where Me represents methyl, vi represents vinyl, and 100000 > n > 2000.
The molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) m (Me 2 SiO) n SiMe 2 OH；
Wherein OH represents hydroxyl, me represents methyl, vi represents vinyl, 100 > m > 10, 100000 > n > 2000.
The high-cohesiveness liquid silk-screen silicone rubber is prepared by using gas-phase white carbon black as an inlet Deshan QS-40.
The high-cohesiveness liquid silk-screen silicone rubber is prepared by mixing the solvent with a solvent, wherein the solvent is one of toluene, ethyl acetate and butanone.
The high-cohesiveness liquid silk-screen silicone rubber is prepared by mixing one or more of KH-560, KH-570 and tetraethoxysilane.
The high-cohesiveness liquid silk-screen silicone rubber has the hydrogen content of 0.8-1.2%, and the molar ratio of SiH to SiVi during vulcanization is 1.2:1 to 2:1.
the high-cohesiveness liquid silk-screen silicone rubber is prepared by mixing the platinum catalyst H with a solvent 2 PtCl 6 Isopropyl alcohol solution of (1), H 2 PtCl 6 Tetrahydrofuran solution of (2), pt (PPh) 3 ) 4 And one or more of methylvinylsiloxane-coordinated platinum complexes;
the content of platinum metal elements in the platinum catalyst is 1-30 PPM of the total raw materials.
The high-cohesiveness liquid silk-screen silicone rubber is prepared by mixing one or more of quinoline, pyridine, tert-butyl hydroperoxide, propiolic alcohol and tetramethyl butynol;
the molar ratio of the inhibitor to the platinum metal element in the platinum catalyst is 15-100: 1.
a preparation method of high-cohesiveness liquid silk-screen silicone rubber is used for preparing the high-cohesiveness liquid silk-screen silicone rubber;
the preparation method comprises the following steps:
step 1, dispersing vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica and a solvent uniformly by using a high-speed dispersion machine to obtain vinyl glue;
and 2, uniformly mixing the vinyl glue, the silane coupling agent, the hydrogen-containing silicone oil, the platinum catalyst and the inhibitor to obtain the high-cohesiveness liquid silk-screen silicone rubber.
The invention has the beneficial effects that: according to the invention, vinyl-terminated methyl vinyl silicone oil and hydroxyl-terminated methyl vinyl silicone oil are creatively added to increase the polar groups in the silk-screen silicone rubber, and based on the synergistic effect of a silane coupling agent, when the silk-screen silicone rubber is cured and crosslinked, the polar groups and the silane coupling agent react with the polar groups on the surface of the cloth, so that a stable structure with strong bonding force is formed on the surfaces of the silk-screen silicone rubber and the cloth, the bonding effect of the base material with poor bonding force is optimized, the problem of poor bonding between the traditional liquid silicone rubber and various cloth is solved, and the silk-screen silicone rubber has wide application in the printing industry.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to facilitate the understanding and appreciation of the inventive concepts herein, and are not intended to be limiting thereof.
The invention provides high-cohesiveness liquid silk-screen silicone rubber which comprises the following raw materials: vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica, a solvent, a silane coupling agent, hydrogen-containing silicone oil, a platinum catalyst and an inhibitor;
wherein the total mass of the hydroxyl-terminated methyl vinyl silicone oil and the fumed silica is 0.05-0.2 time of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the solvent is 1 to 5 times of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the silane coupling agent is 1-10% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the hydrogen-containing silicone oil is 2-10% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the platinum catalyst is 0.1-2% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the inhibitor is 0.01-0.1% of the total mass of the vinyl-terminated methyl vinyl silicone oil.
Preferably, the molecular formula of the vinyl-terminated methyl vinyl silicone oil is ViMe 2 SiO(Me 2 SiO) n SiMe 2 Vi；
Where Me represents methyl, vi represents vinyl, and 100000 > n > 2000.
Preferably, the molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) m (Me 2 SiO) n SiMe 2 OH；
Wherein OH represents hydroxy, me represents methyl, vi represents vinyl, 100 > m > 10, 100000 > n > 2000.
Preferably, the fumed silica is imported Desshan QS-40, which has the advantages of larger surface area, more hydroxyl content and stronger adhesive force.
Preferably, the solvent is one of toluene, ethyl acetate and butanone; preferably, the solvent is ethyl acetate.
Preferably, the silane coupling agent is one or a mixture of more of KH-560, KH-570 and tetraethoxysilane; preferably, the silane coupling agent is a mixture of three of KH-560, KH-570 and tetraethoxysilane.
Preferably, the hydrogen content of the hydrogen-containing silicone oil is 0.8-1.2%, and the molar ratio of SiH to SiVi during vulcanization is 1.2:1 to 2:1; preferably, the hydrogen content of the hydrogen-containing silicone oil is 1-1.2%, and the molar ratio of SiVi to SiVi in vulcanization is 1.5:1 to 2:1.
preferably, the platinum catalyst is H 2 PtCl 6 Isopropyl alcohol solution of (1), H 2 PtCl 6 Tetrahydrofuran solution of (2), pt (PPh) 3 ) 4 And one or more of methylvinylsiloxane-coordinated platinum complexes; preferably, the platinum catalyst is a methylvinylsiloxane-coordinated platinum complex;
the content of platinum metal elements in the platinum catalyst is 1-30 PPM of the total raw materials; preferably, the content of the platinum metal element in the platinum catalyst is 20-30 PPM of the total raw materials.
Preferably, the inhibitor is one or a mixture of more of quinoline, pyridine, tert-butyl hydroperoxide, propiolic alcohol and tetramethyl butynol; preferably, the inhibitor is one or a mixture of two of propiolic alcohol and tetramethylbutynol; preferably, the inhibitor is tetramethylbutynol;
the molar ratio of the inhibitor to the platinum metal element in the platinum catalyst is 15-100: 1.
the invention also discloses a preparation method of the high-cohesiveness liquid silk-screen silicone rubber, which is used for preparing the high-cohesiveness liquid silk-screen silicone rubber;
the preparation method comprises the following steps:
step 1, dispersing vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica and a solvent uniformly by using a high-speed dispersion machine to obtain vinyl glue;
and 2, uniformly mixing the vinyl glue, the silane coupling agent, the hydrogen-containing silicone oil, the platinum catalyst and the inhibitor to obtain the high-cohesiveness liquid silk-screen silicone rubber.
The preparation process according to the invention is now described in detail in the following examples:
example 1: the embodiment discloses a preparation method of high-cohesiveness liquid silk-screen silicone rubber, which is used for preparing the high-cohesiveness liquid silk-screen silicone rubber;
the preparation method comprises the following steps:
step 1, dispersing 100g of vinyl-terminated methyl vinyl silicone oil, 10g of hydroxyl-terminated methyl vinyl silicone oil, 5g of Deshan QS-40 fumed silica and 200g of ethyl acetate uniformly by using a high-speed dispersion machine to obtain vinyl glue;
and 2, adding 1gKH-560, 1gKH-570, 1g of ethyl orthosilicate, 2g of 1.2% hydrogen-containing silicone oil, 0.5g of 5000PPM platinum catalyst and 0.1g of methylbutinol into the vinyl rubber, and uniformly mixing to obtain the high-adhesion liquid silk-screen silicone rubber.
Wherein the molecular formula of the vinyl-terminated methyl vinyl silicone oil is ViMe 2 SiO(Me 2 SiO) 10000 SiMe 2 Vi, the molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) 10 (Me 2 SiO) 2500 SiMe 2 OH。
Through detection, the silk-screen silicone rubber prepared in the embodiment 1 has good adhesion to nylon cloth and terylene cloth, and cohesive failure is achieved.
Example 2: the embodiment discloses a preparation method of high-cohesiveness liquid silk-screen silicone rubber, which is used for preparing the high-cohesiveness liquid silk-screen silicone rubber;
the preparation method comprises the following steps:
step 1, dispersing 100g of vinyl-terminated methyl vinyl silicone oil, 15g of hydroxyl-terminated methyl vinyl silicone oil, 10g of Deshan QS-40 fumed silica and 300g of ethyl acetate uniformly by using a high-speed dispersion machine to obtain vinyl glue;
and 2, adding 1gKH-560, 1gKH-570, 1g of ethyl orthosilicate, 2g of 1.2% hydrogen-containing silicone oil, 0.5g of 5000PPM platinum catalyst and 0.1g of methylbutinol into the vinyl rubber, and uniformly mixing to obtain the high-adhesion liquid silk-screen silicone rubber.
Wherein the molecular formula of the vinyl-terminated methyl vinyl silicone oil is ViMe 2 SiO(Me 2 SiO) 10000 SiMe 2 Vi, the molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) 15 (Me 2 SiO) 2500 SiMe 2 OH。
Through detection, the silk-screen silicone rubber prepared in the embodiment 2 has good adhesion to nylon cloth and terylene cloth, and cohesive failure is achieved.
Example 3: the embodiment discloses a preparation method of high-cohesiveness liquid silk-screen silicone rubber, which is used for preparing the high-cohesiveness liquid silk-screen silicone rubber;
the preparation method comprises the following steps:
step 1, dispersing 100g of vinyl-terminated methyl vinyl silicone oil, 15g of hydroxyl-terminated methyl vinyl silicone oil, 10g of Deshan QS-40 fumed silica and 300g of ethyl acetate uniformly by using a high-speed dispersion machine to obtain vinyl glue;
and 2, adding 0.5gKH-560, 1.5gKH-570, 1.5g of tetraethoxysilane, 3g of 1.2% hydrogen-containing silicone oil, 0.5g of 5000PPM platinum catalyst and 0.1g of methyl butynol into the vinyl rubber, and uniformly mixing to obtain the high-adhesion liquid silk-screen silicone rubber.
Wherein the molecular formula of the vinyl-terminated methyl vinyl silicone oil is ViMe 2 SiO(Me 2 SiO) 10000 SiMe 2 Vi, the molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) 20 (Me 2 SiO) 3000 SiMe 2 OH。
Through detection, the silk-screen silicone rubber prepared in the embodiment 3 has good adhesion to nylon cloth and terylene cloth, and cohesive failure is achieved.
Comparative example 1: the comparative example discloses a preparation method of high-cohesiveness liquid silk-screen silicone rubber, which is used for preparing the high-cohesiveness liquid silk-screen silicone rubber;
the preparation method comprises the following steps:
step 1, putting 1000g of vinyl-terminated methyl vinyl silicone oil, 600g of Deshan QS-40 fumed silica and 250g of silazane into a kneader to be kneaded for 5 hours, then heating to 165 ℃, vacuumizing for 2 hours, adding 1800g of hydroxyl-terminated methyl vinyl silicone oil to slowly dilute uniformly, and cooling to obtain methyl vinyl adhesive;
and 2, uniformly mixing 100g of the methyl vinyl glue, 0.5g of 5000PPM platinum catalyst, 0.1g of methyl butynol and 5g of 1.2% hydrogen-containing silicone oil to obtain the silk-screen silicone rubber.
Wherein the ethyleneThe molecular formula of the methyl vinyl silicone oil with end capping is ViMe 2 SiO(Me 2 SiO) 10000 SiMe 2 Vi, the molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) 20 (Me 2 SiO) 3000 SiMe 2 OH。
Through detection, the silk-screen silicon rubber prepared in the comparative example 1 has no adhesive force to nylon cloth and terylene cloth.
The high-cohesiveness liquid silk-screen silicone rubber has the following advantages: according to the invention, vinyl-terminated methyl vinyl silicone oil and hydroxyl-terminated methyl vinyl silicone oil are creatively added to increase the polar groups in the silk-screen silicone rubber, and based on the synergistic effect of a silane coupling agent, when the silk-screen silicone rubber is cured and crosslinked, the polar groups and the silane coupling agent react with the polar groups on the surface of the cloth, so that a stable structure with strong bonding force is formed on the surfaces of the silk-screen silicone rubber and the cloth, the bonding effect of the base material with poor bonding force is optimized, the problem of poor bonding between the traditional liquid silicone rubber and various cloth is solved, and the silk-screen silicone rubber has wide application in the printing industry.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the disclosed solution, or modify the equivalent embodiments using the technical means and teachings disclosed above, without departing from the scope of the present solution. Therefore, equivalent changes in shape, structure and principle according to the invention should be covered by the protection scope of the invention without departing from the technical scheme of the invention.
Claims (10)
1. The high-cohesiveness liquid silk-screen silicone rubber is characterized by comprising the following raw materials: vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica, a solvent, a silane coupling agent, hydrogen-containing silicone oil, a platinum catalyst and an inhibitor;
wherein the total mass of the hydroxyl-terminated methyl vinyl silicone oil and the fumed silica is 0.05-0.2 time of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the solvent is 1 to 5 times of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the silane coupling agent is 1-10% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the hydrogen-containing silicone oil is 2-10% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the platinum catalyst is 0.1-2% of the total mass of the vinyl-terminated methyl vinyl silicone oil;
the mass of the inhibitor is 0.01-0.1% of the total mass of the vinyl-terminated methyl vinyl silicone oil.
2. The high-adhesion liquid silk-screen silicone rubber as claimed in claim 1, wherein the vinyl-terminated methyl vinyl silicone oil has a molecular formula of ViMe 2 SiO(Me 2 SiO) n SiMe 2 Vi；
Where Me represents methyl, vi represents vinyl, and 100000 > n > 2000.
3. The high-adhesion liquid silk-screen silicone rubber as claimed in claim 2, wherein the molecular formula of the hydroxyl-terminated methyl vinyl silicone oil is HOME 2 SiO(MeViSiO) m (Me 2 SiO) n SiMe 2 OH；
Wherein OH represents hydroxy, me represents methyl, vi represents vinyl, 100 > m > 10, 100000 > n > 2000.
4. The high-cohesiveness liquid silk-screen silicone rubber of claim 3, wherein the fumed silica is imported deshan QS-40.
5. The highly adhesive liquid screen printing silicone rubber according to claim 4, wherein the solvent is one of toluene, ethyl acetate and butanone.
6. The high-adhesion liquid silk-screen silicone rubber as claimed in claim 5, wherein the silane coupling agent is one or a mixture of KH-560, KH-570 and tetraethoxysilane.
7. The high-adhesion liquid silk-screen silicone rubber as claimed in claim 6, wherein the hydrogen content of the hydrogen-containing silicone oil is 0.8% -1.2%, and the hydrogen content is determined according to the molar ratio of SiH to SiVi of 1.2:1 to 2:1.
8. the high-adhesion liquid silk-screen silicone rubber as claimed in claim 7, wherein the platinum catalyst is H 2 PtCl 6 Isopropyl alcohol solution of (1), H 2 PtCl 6 Tetrahydrofuran solution of (2), pt (PPh) 3 ) 4 One or a mixture of several of methyl vinyl siloxane coordinated platinum complex compounds;
the content of platinum metal elements in the platinum catalyst is 1-30 PPM of the total raw materials.
9. The high-adhesion liquid silk-screen silicone rubber as claimed in claim 8, wherein the inhibitor is one or a mixture of quinoline, pyridine, tert-butyl hydroperoxide, propiolic alcohol and tetramethylbutynol;
the molar ratio of the inhibitor to the platinum metal element in the platinum catalyst is 15-100: 1.
10. a preparation method of high-cohesiveness liquid silk-screen silicone rubber is characterized in that the preparation method is used for preparing the high-cohesiveness liquid silk-screen silicone rubber of any one of claims 1 to 9;
the preparation method comprises the following steps:
step 1, dispersing vinyl-terminated methyl vinyl silicone oil, hydroxyl-terminated methyl vinyl silicone oil, fumed silica and a solvent uniformly by using a high-speed dispersion machine to obtain vinyl glue;
and 2, uniformly mixing the vinyl glue, the silane coupling agent, the hydrogen-containing silicone oil, the platinum catalyst and the inhibitor to obtain the high-cohesiveness liquid silk-screen silicone rubber.
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| CN113667310A (en) * | 2021-08-18 | 2021-11-19 | 佛山市天宝利硅工程科技有限公司 | Liquid silicone rubber and preparation method and application thereof |
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