CN112795365A - Acidic silicone glass cement and production process - Google Patents
Acidic silicone glass cement and production process Download PDFInfo
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- CN112795365A CN112795365A CN202011631389.1A CN202011631389A CN112795365A CN 112795365 A CN112795365 A CN 112795365A CN 202011631389 A CN202011631389 A CN 202011631389A CN 112795365 A CN112795365 A CN 112795365A
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- stirring
- glass cement
- silicone glass
- powder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides an acidic silicone glass cement and a production process thereof, which relate to the technical field of glass cement and comprise the following components in percentage by weight: hydroxyl-terminated polydimethylsiloxane: 40-60%, dimethicone: 5-10%, paraffin mixture 20-30%, fumed silica powder: 10-15%, methyl triacetoxysilane: 5-7%, ethyl triacetoxysilane: 1-2% and dibutyltin diacetate: and (4) the balance. The invention has the advantages of reasonable formula matching, simple production process, easy mastering, low cost and good product quality.
Description
Technical Field
The invention relates to the technical field of glass cement, in particular to acidic silicone glass cement and a production process thereof.
Background
Glass cement is a material that bonds and seals various glasses to other substrates. Two major classes are silicone adhesive and polyurethane adhesive (PU). The silicone adhesive sealant is commonly referred to as glass adhesive, and is divided into acid and neutral adhesives, and the neutral adhesives are divided into stone sealants, mildew-proof sealants, fireproof sealants, pipeline sealants and the like.
Glass cement is a common adhesive at present, and is popular among users due to the advantages of high adhesive strength, low toxicity, good shape retention and the like. The existing glass cement is generally processed by a mixing method, and is prepared by uniformly mixing main materials, fillers, auxiliaries, pigments and the like. However, the acidic silicone glass cement used at present has too many composition formulas, which causes high cost, poor quality, complicated production process and the like.
Disclosure of Invention
The invention overcomes the defects in the prior art, and provides the acidic silicone glass cement and the production process thereof, and the acidic silicone glass cement has the advantages of reasonable formula matching, simple production process, easy mastering, low cost and good product quality.
In order to solve the technical problems, the invention is realized by the following technical scheme:
an acidic silicone glass cement comprising by weight: hydroxyl-terminated polydimethylsiloxane: 40-60%, dimethicone: 5-10%, paraffin mixture 20-30%, fumed silica powder: 10-15%, methyl triacetoxysilane: 5-7%, ethyl triacetoxysilane: 1-2% and dibutyltin diacetate: and (4) the balance.
Preferably, the acidic silicone glass cement comprises the following components in percentage by weight: hydroxyl-terminated polydimethylsiloxane: 45-55%, dimethicone: 6-8%, paraffin mixture 23-28%, fumed silica powder: 11-13%, methyltriacetoxysilane: 5.5-6.5%, ethyl triacetoxysilane: 1.5-2% and dibutyltin diacetate: and (4) the balance.
Preferably, the production process of the acidic silicone glass cement comprises the following steps:
(1) sequentially putting the mixture of the hydroxyl-terminated polydimethylsiloxane, the simethicone and the alkane into a planetary machine, stirring at a high speed, stirring for 10 minutes under the vacuum condition (more than 0.09MPA, the same below), and uniformly mixing;
(2) continuously adding methyl triacetoxysilane into the planetary clock, stirring for 15-20 minutes in vacuum, and mixing uniformly;
(3) adding the fumed silica powder into a planetary machine for multiple times, stirring and dispersing the powder, stopping the machine after observing that all the powder is primarily dispersed, hanging the edges, stirring in vacuum for 20-40 minutes, ensuring that the powder is completely and uniformly dispersed, and simultaneously defoaming;
(4) continuously adding the rest materials, and stirring in vacuum for 20-40 minutes to finish the preparation;
(5) sampling and detecting, and filling into small packages after the product is qualified, thus obtaining the finished product.
Preferably, the stirring speed of the planetary machine is 150 and 180 revolutions per minute.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses the composition formula of the acidic silicone glass cement, the formula is reasonable in collocation, the synergistic effect is generated, the glass cement with good quality is produced, the production process is simple, the operation and the control are easy, the overall formula price is low, and the cost control is facilitated.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
An acidic silicone glass cement comprising by weight: hydroxyl-terminated polydimethylsiloxane: 40-60%, dimethicone: 5-10%, paraffin mixture 20-30%, fumed silica powder: 10-15%, methyl triacetoxysilane: 5-7%, ethyl triacetoxysilane: 1-2% and dibutyltin diacetate: and (4) the balance.
Preferably, the acidic silicone glass cement comprises the following components in percentage by weight: hydroxyl-terminated polydimethylsiloxane: 45-55%, dimethicone: 6-8%, paraffin mixture 23-28%, fumed silica powder: 11-13%, methyltriacetoxysilane: 5.5-6.5%, ethyl triacetoxysilane: 1.5-2% and dibutyltin diacetate: and (4) the balance.
Specifically, hydroxyl-terminated polydimethylsiloxane: 50%, dimethicone: 7%, paraffin mixture 25%, fumed silica powder: 12%, methyltriacetoxysilane: 6%, ethyltriacetoxysilane: 1.8% and dibutyltin diacetate: and (4) the balance.
Preferably, the production process of the acidic silicone glass cement comprises the following steps:
(1) sequentially putting the mixture of the hydroxyl-terminated polydimethylsiloxane, the simethicone and the alkane into a planetary machine, stirring at a high speed, stirring for 10 minutes under the vacuum condition (more than 0.09MPA, the same below), and uniformly mixing;
(2) continuously adding methyl triacetoxysilane into the planetary clock, stirring for 15-20 minutes in vacuum, and mixing uniformly;
(3) adding the fumed silica powder into a planetary machine for multiple times, stirring and dispersing the powder, stopping the machine after observing that all the powder is primarily dispersed, hanging the edges, stirring in vacuum for 20-40 minutes, ensuring that the powder is completely and uniformly dispersed, and simultaneously defoaming;
(4) continuously adding the rest materials, and stirring in vacuum for 20-40 minutes to finish the preparation;
(5) sampling and detecting, and filling into small packages after the product is qualified, thus obtaining the finished product.
Preferably, the stirring speed of the planetary machine is 150 and 180 revolutions per minute, in particular, the stirring speed is 160 revolutions per minute.
Dimethyl silicone oil: the paint is tasteless and nontoxic, has physiological inertia, good chemical stability, electrical insulation property and weather resistance, wide viscosity range, low freezing point, high flash point, good hydrophobic property and high shear resistance, can be used for a long time at 50-180 ℃, and can be widely used as an insulation, lubrication, shockproof, dustproof oil, dielectric fluid and heat carrier, and as an additive for defoaming, stripping, painting and daily cosmetics. The device is used for removing foam generated by adding a medicament for generating a large amount of foam and bubbles which enable air to enter a system under the actions of oscillation, stirring and the like in the cleaning and pre-filming process of an industrial circulating cooling water system.
Fumed silica: the material is one of the most important high-tech superfine inorganic new materials, and has the characteristics of large specific surface area, strong surface adsorption force, large surface energy, high chemical purity, good dispersion performance, thermal resistance, electric resistance and the like due to small particle size, and has irreplaceable effect due to the excellent stability, reinforcement, thickening property and thixotropy in various subjects and fields.
Methyl triacetoxysilane, also known as triacetoxymethylsilane, has a molecular formula of C7H12O6Si, a molecular weight of 220.2521, and a CAS registry number of 4253-34-3, is used as a crosslinking agent, and can be used for bonding plastics, nylon, ceramics, aluminum and the like with silicone rubber.
Ethyl triacetoxysilane: the product mainly used as the cross-linking agent of vulcanized silicone rubber and silicone glass cement (acid) has lower solidifying point, and the glass cement product prepared by using the product as the formula has good tensile strength and growth rate after being completely solidified, thereby improving the storage and use stability of the glass cement product.
Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. An acidic silicone glass cement, which is characterized by comprising the following components in percentage by weight: hydroxyl-terminated polydimethylsiloxane: 40-60%, dimethicone: 5-10%, paraffin mixture 20-30%, fumed silica powder: 10-15%, methyl triacetoxysilane: 5-7%, ethyl triacetoxysilane: 1-2% and dibutyltin diacetate: and (4) the balance.
2. The acidic silicone glass cement according to claim 1, comprising by weight: hydroxyl-terminated polydimethylsiloxane: 45-55%, dimethicone: 6-8%, paraffin mixture 23-28%, fumed silica powder: 11-13%, methyltriacetoxysilane: 5.5-6.5%, ethyl triacetoxysilane: 1.5-2% and dibutyltin diacetate: and (4) the balance.
3. An acidic silicone glass cement according to claim 1 or 2, characterized in that the production process comprises the following steps:
(1) sequentially putting the mixture of the hydroxyl-terminated polydimethylsiloxane, the simethicone and the alkane into a planetary machine, stirring at a high speed, stirring for 10 minutes under the vacuum condition (more than 0.09MPA, the same below), and uniformly mixing;
(2) continuously adding methyl triacetoxysilane into the planetary clock, stirring for 15-20 minutes in vacuum, and mixing uniformly;
(3) adding the fumed silica powder into a planetary machine for multiple times, stirring and dispersing the powder, stopping the machine after observing that all the powder is primarily dispersed, hanging the edges, stirring in vacuum for 20-40 minutes, ensuring that the powder is completely and uniformly dispersed, and simultaneously defoaming;
(4) continuously adding the rest materials, and stirring in vacuum for 20-40 minutes to finish the preparation;
(5) sampling and detecting, and filling into small packages after the product is qualified, thus obtaining the finished product.
4. The acidic silicone glass adhesive according to claim 3, wherein the stirring speed of the planetary machine is 150-180 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011631389.1A CN112795365A (en) | 2020-12-31 | 2020-12-31 | Acidic silicone glass cement and production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011631389.1A CN112795365A (en) | 2020-12-31 | 2020-12-31 | Acidic silicone glass cement and production process |
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| CN112795365A true CN112795365A (en) | 2021-05-14 |
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| CN202011631389.1A Pending CN112795365A (en) | 2020-12-31 | 2020-12-31 | Acidic silicone glass cement and production process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482200A (en) * | 2003-05-15 | 2004-03-17 | 四川大学 | Optically transparent room temperature solidifying silicone mixture for sealing and process of preparation |
| CN101982516A (en) * | 2010-11-24 | 2011-03-02 | 浙江时间装饰材料有限公司 | High-performance acidic transparent silicone sealant |
| CN102146208A (en) * | 2011-01-26 | 2011-08-10 | 广州市高士实业有限公司 | Preparation method of transparent dealcoholized single-component room temperature vulcanized silicone rubber |
| CN102504754A (en) * | 2011-10-26 | 2012-06-20 | 佛山市日丰企业有限公司 | Deacidified silicone sealant for buildings and preparation method thereof |
| CN110938405A (en) * | 2019-12-16 | 2020-03-31 | 广州市高士实业有限公司 | Organic silica gel with heat resistance and acid and alkali resistance |
-
2020
- 2020-12-31 CN CN202011631389.1A patent/CN112795365A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482200A (en) * | 2003-05-15 | 2004-03-17 | 四川大学 | Optically transparent room temperature solidifying silicone mixture for sealing and process of preparation |
| CN101982516A (en) * | 2010-11-24 | 2011-03-02 | 浙江时间装饰材料有限公司 | High-performance acidic transparent silicone sealant |
| CN102146208A (en) * | 2011-01-26 | 2011-08-10 | 广州市高士实业有限公司 | Preparation method of transparent dealcoholized single-component room temperature vulcanized silicone rubber |
| CN102504754A (en) * | 2011-10-26 | 2012-06-20 | 佛山市日丰企业有限公司 | Deacidified silicone sealant for buildings and preparation method thereof |
| CN110938405A (en) * | 2019-12-16 | 2020-03-31 | 广州市高士实业有限公司 | Organic silica gel with heat resistance and acid and alkali resistance |
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