CN113416416A - High-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and manufacturing method thereof - Google Patents
High-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and manufacturing method thereof Download PDFInfo
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- CN113416416A CN113416416A CN202110907127.1A CN202110907127A CN113416416A CN 113416416 A CN113416416 A CN 113416416A CN 202110907127 A CN202110907127 A CN 202110907127A CN 113416416 A CN113416416 A CN 113416416A
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- glass fiber
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- coupling agent
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- temperature resistance
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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
- C08L83/00—Compositions of 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; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- 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
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
Abstract
The invention relates to the technical field of glass fiber tubes, in particular to a high-temperature-resistant and high-hydrophobicity glass fiber insulating tube and a manufacturing method thereof. The glass fiber insulating tube with high temperature resistance and high hydrophobicity comprises the following raw materials in parts by weight: glass fiber, bismaleimide, coupling agent organic silicon resin, methyl phenyl silicon resin, coupling agent, hollow glass bead, catalyst, antioxidant and defoaming agent. The bismaleimide added into the glass fiber of the glass fiber insulating tube with high temperature resistance and high hydrophobicity can reduce the overall water absorption of the cured material, improve the water resistance of the cured material and reduce the easy hydrolysis; the pressure of the winding equipment is improved, so that the glass fiber is wound more tightly, and gaps are reduced; the physical strength and the temperature resistance degree are enhanced by mixing the two resins.
Description
Technical Field
The invention relates to a glass fiber insulating tube, in particular to a glass fiber insulating tube with high temperature resistance and high hydrophobicity and a manufacturing method thereof.
Background
The glass fiber insulating tube is mainly used for insulating materials of electric appliances, is a fragile and consumable product in the welding and cutting industry, is widely used in the carbon dioxide protection welding industry at home and abroad, and the insulating tube product must be used for the gun nozzle of all carbon dioxide protection welding guns.
In the aspect of electric power engineering, the usage amount of the insulating tube is also huge, and compared with glass or ceramic parts, the insulating tube has good physical anti-falling and anti-extrusion capacity.
The glass fiber material of the glass fiber insulation pipe is found in practice that in water or some humid and hot environments, the epoxy material may have the performance reduced after being used for a period of time, particularly in the environment with the temperature of 50-60 ℃ and the humidity of more than 95% RH, the bearing capacity of the epoxy material is continuously reduced, and even the epoxy material can be directly failed, so that the epoxy material loses the original function.
The existing glass fiber insulating tube adopts single resin, the temperature resistance degree of the glass fiber insulating tube is improved to about 380 ℃ at 180 ℃, and the glass fiber insulating tube is easy to crack and become brittle at high temperature for a long time, so that the product fails.
Disclosure of Invention
The invention aims to solve the defects and provides a high-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and a manufacturing method thereof.
In order to overcome the defects in the background art, the technical scheme adopted by the invention for solving the technical problems is as follows: the high-temperature-resistant and high-hydrophobicity glass fiber insulating pipe comprises the following raw materials in parts by weight:
20-35 parts of glass fiber
1-1.75 parts of bismaleimide
1-4 parts of coupling agent
10-25 parts of organic silicon resin
10-25 parts of methyl phenyl silicone resin
3-5 parts of coupling agent
5-10 parts of hollow glass beads
1-5 parts of catalyst
1-4 parts of antioxidant
1-3 parts of a defoaming agent.
According to another embodiment of the present invention, it further comprises that the hollow glass microspheres have a diameter of 25 to 95 μm.
According to another embodiment of the present invention, the antioxidant is one or a mixture of two or more of butylated hydroxyanisole, butylated hydroxytoluene and tertiary butyl hydroquinone.
According to another embodiment of the present invention, it is further included that the coupling agent is a silane coupling agent.
The processing method of the glass fiber insulating tube comprises the following steps:
s1, adding bismaleimide into the glass fiber, and fully mixing the bismaleimide and the glass fiber through a stirrer to obtain a mixture;
s2, putting the organic silicon resin and the methyl phenyl silicone resin into a reaction kettle, stirring the mixture in vacuum at the temperature of 135 ℃ and 150 ℃ for 1.5 hours under the pressure of less than 80pa, and adding the hollow glass beads to obtain a first mixture;
s3, sequentially adding a coupling agent, a catalyst, an antioxidant and a defoaming agent into the first mixed material of S2, wherein the pressure is less than 80pa, and stirring for 20min in vacuum at 95 ℃ to obtain a second mixed material;
s4, fully mixing the secondary mixture of S3 and the mixture of S1 under the action of a stirrer, gluing after fully mixing, naturally airing for 15 minutes to be in a semi-cured state, and then carrying out pressure weaving, winding and forming to prepare the glass fiber insulating tube;
s5, using a sand belt with 800 meshes to finely grind the glass fiber tube in the S1.
According to another embodiment of the present invention, the pressure of the pressurized braiding winding in S4 is 50 KG.
The invention has the beneficial effects that: the bismaleimide added into the glass fiber of the glass fiber insulating tube with high temperature resistance and high hydrophobicity can reduce the overall water absorption of the cured material, improve the water resistance of the cured material and reduce the easy hydrolysis; the pressure of the winding equipment is improved, so that the glass fiber is wound more tightly, and gaps are reduced; the physical strength and the temperature resistance degree are enhanced by mixing the two resins.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly and completely describe the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The high-temperature-resistant and high-hydrophobicity glass fiber insulating pipe comprises the following raw materials in parts by weight:
20-35 parts of glass fiber
1-1.75 parts of bismaleimide
1-4 parts of coupling agent
10-25 parts of organic silicon resin
10-25 parts of methyl phenyl silicone resin
3-5 parts of coupling agent
5-10 parts of hollow glass beads
1-5 parts of catalyst
1-4 parts of antioxidant
1-3 parts of a defoaming agent.
Furthermore, the diameter of the hollow glass bead is 25-95 μm, and the heat insulation performance of the material is improved and the heat conduction performance is reduced by adding the hollow glass bead with the diameter of 25-95 μm. The high-performance hollow glass beads produced by the medium steel group are added to the organic silicon resin, so that in the high-temperature curing process, the generated micro bubbles are reduced by more than 50% after the glass beads are added, the heat conduction performance is greatly reduced, and the heat insulation performance is greatly optimized.
Further, the antioxidant is one or a mixture of more than two of butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone.
Further, the coupling agent is a silane coupling agent.
The processing method of the glass fiber insulating tube comprises the following steps:
s1, adding bismaleimide into the glass fiber, and fully mixing the bismaleimide and the glass fiber through a stirrer to obtain a mixture;
s2, putting the organic silicon resin and the methyl phenyl silicone resin into a reaction kettle, stirring the mixture in vacuum at the temperature of 135 ℃ and 150 ℃ for 1.5 hours under the pressure of less than 80pa, and adding the hollow glass beads to obtain a first mixture;
s3, sequentially adding a coupling agent, a catalyst, an antioxidant and a defoaming agent into the first mixed material of S2, wherein the pressure is less than 80pa, and stirring for 20min in vacuum at 95 ℃ to obtain a second mixed material;
s4, fully mixing the secondary mixture of S3 and the mixture of S1 under the action of a stirrer, gluing after fully mixing, naturally airing for 15 minutes to be in a semi-cured state, and then carrying out pressure weaving, winding and forming to prepare the glass fiber insulating tube;
s5, using an abrasive belt with 800 meshes to finely grind the glass fiber tube in the S1 to ensure that the surface of the workpiece reaches about 12.5 smooth finish.
Further, the pressure of the pressurized braiding winding in the step S4 is 50 KG. Improve preparation equipment pressure, improve 50KG from ordinary winding 30 KG's pressure for the fine inseparabler of winding glass reduces the space.
The couplant is added into the glass fiber, so that the organic wettability of the glass fiber material is greatly improved, the organic silicon resin can be infiltrated into the glass fiber material, and an adhesive layer is formed in the gaps woven by warps and wefts, thereby changing the single form of the conventional inner glue or outer glue. During the high temperature curing process, a better cured layer is formed. Meanwhile, a plurality of resins are added for property combination, and the added methyl phenyl silicone resin has high heat resistance, flexibility and good insulation moisture resistance, so that the high temperature resistance is greatly improved, and the temperature resistance range is improved from 180 ℃ to 240 ℃ in a common test to 380 ℃ to 420 ℃.
Adding bismaleimide with the proportion of 5% before curing the glass fiber resin material, and fully mixing the bismaleimide and the insulating resin by using a stirrer, so that the pressurization winding between layers is facilitated during winding. Thereby reducing the overall water absorption of the cured material, improving the water resistance of the cured material, and reducing the easy hydrolysis of the cured material. When the glass fiber insulating tube is immersed in water, a micro-pore insulating layer is formed on the surface of the glass fiber insulating tube, and the glass fiber insulating tube has excellent hydrophobicity.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The glass fiber insulating pipe with high temperature resistance and high hydrophobicity is characterized by comprising the following raw materials in parts by weight:
20-35 parts of glass fiber
1-1.75 parts of bismaleimide
1-4 parts of coupling agent
10-25 parts of organic silicon resin
10-25 parts of methyl phenyl silicone resin
3-5 parts of coupling agent
5-10 parts of hollow glass beads
1-5 parts of catalyst
1-4 parts of antioxidant
1-3 parts of a defoaming agent.
2. The fiberglass insulation pipe with high temperature resistance and high hydrophobicity according to claim 1, wherein: the diameter of the hollow glass bead is 25-95 μm.
3. The fiberglass insulation pipe with high temperature resistance and high hydrophobicity according to claim 1, wherein: the antioxidant is one or a mixture of more than two of butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone.
4. The fiberglass insulation pipe with high temperature resistance and high hydrophobicity according to claim 1, wherein: the coupling agent is a silane coupling agent.
5. The method of claim 1, wherein the method comprises the steps of:
s1, adding bismaleimide into the glass fiber, and fully mixing the bismaleimide and the glass fiber through a stirrer to obtain a mixture;
s2, putting the organic silicon resin and the methyl phenyl silicone resin into a reaction kettle, stirring the mixture in vacuum at the temperature of 135 ℃ and 150 ℃ for 1.5 hours under the pressure of less than 80pa, and adding the hollow glass beads to obtain a first mixture;
s3, sequentially adding a coupling agent, a catalyst, an antioxidant and a defoaming agent into the first mixed material of S2, wherein the pressure is less than 80pa, and stirring for 20min in vacuum at 95 ℃ to obtain a second mixed material;
s4, fully mixing the secondary mixture of S3 and the mixture of S1 under the action of a stirrer, gluing after fully mixing, naturally airing for 15 minutes to be in a semi-cured state, and then carrying out pressure weaving, winding and forming to prepare the glass fiber insulating tube;
s5, using a sand belt with 800 meshes to finely grind the glass fiber tube in the S1.
6. The method for manufacturing a glass fiber insulation pipe according to claim 5, wherein the pressure for the pressure-braiding winding in S4 is 50 KG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907127.1A CN113416416A (en) | 2021-08-09 | 2021-08-09 | High-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907127.1A CN113416416A (en) | 2021-08-09 | 2021-08-09 | High-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113416416A true CN113416416A (en) | 2021-09-21 |
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| CN202110907127.1A Pending CN113416416A (en) | 2021-08-09 | 2021-08-09 | High-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and manufacturing method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100092756A1 (en) * | 2007-03-29 | 2010-04-15 | Toho Tenax Co., Ltd | Fiber-reinforced prepreg and composite material obtained from the same |
| CN102332372A (en) * | 2011-07-29 | 2012-01-25 | 太仓市华强玻璃钢五金厂 | High-temperature and high-strength insulating tube and manufacturing method thereof |
| CN102501390A (en) * | 2011-10-19 | 2012-06-20 | 扬州瑞林电工材料有限公司 | Manufacturing method of bismaleimide glass fabric products |
| CN104744926A (en) * | 2013-12-30 | 2015-07-01 | 上海杰事杰新材料(集团)股份有限公司 | High wear resistant and high self-lubrication continuous long fiber reinforced high temperature resistant nylon composite material and preparation method thereof |
| CN111100462A (en) * | 2019-12-31 | 2020-05-05 | 溧阳伊科创绝缘材料技术有限公司 | Carbon dioxide gas shielded welding gun nozzle glass fiber insulating part |
| CN112679947A (en) * | 2020-12-25 | 2021-04-20 | 郑州圣莱特空心微珠新材料有限公司 | Heat insulation strip and preparation method thereof |
-
2021
- 2021-08-09 CN CN202110907127.1A patent/CN113416416A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100092756A1 (en) * | 2007-03-29 | 2010-04-15 | Toho Tenax Co., Ltd | Fiber-reinforced prepreg and composite material obtained from the same |
| CN102332372A (en) * | 2011-07-29 | 2012-01-25 | 太仓市华强玻璃钢五金厂 | High-temperature and high-strength insulating tube and manufacturing method thereof |
| CN102501390A (en) * | 2011-10-19 | 2012-06-20 | 扬州瑞林电工材料有限公司 | Manufacturing method of bismaleimide glass fabric products |
| CN104744926A (en) * | 2013-12-30 | 2015-07-01 | 上海杰事杰新材料(集团)股份有限公司 | High wear resistant and high self-lubrication continuous long fiber reinforced high temperature resistant nylon composite material and preparation method thereof |
| CN111100462A (en) * | 2019-12-31 | 2020-05-05 | 溧阳伊科创绝缘材料技术有限公司 | Carbon dioxide gas shielded welding gun nozzle glass fiber insulating part |
| CN112679947A (en) * | 2020-12-25 | 2021-04-20 | 郑州圣莱特空心微珠新材料有限公司 | Heat insulation strip and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张一敏: "《固体物料分选理论与工艺》", 31 October 2007, 冶金工业出版社 * |
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Application publication date: 20210921 |
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