CN113584886A - Sizing agent for secondary sizing of warp of electronic glass fiber cloth and preparation method thereof - Google Patents
Sizing agent for secondary sizing of warp of electronic glass fiber cloth and preparation method thereof Download PDFInfo
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- CN113584886A CN113584886A CN202110974715.7A CN202110974715A CN113584886A CN 113584886 A CN113584886 A CN 113584886A CN 202110974715 A CN202110974715 A CN 202110974715A CN 113584886 A CN113584886 A CN 113584886A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/17—Natural resins, resinous alcohols, resinous acids, or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
- D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
Abstract
The invention discloses a sizing agent for secondary sizing of warp yarns of electronic glass fiber cloth and a preparation method thereof. The slurry comprises the following components in percentage by mass: 2-40% of rosin resin film-forming agent, 0-12% of other film-forming agent, 0-10% of wetting agent, 0.1-1% of penetrating agent, 0-0.5% of antistatic agent, 0-0.5% of defoaming agent, 0-0.5% of preservative and the balance of pure water. The film formed by the sizing agent has better coating property and better wear resistance, the slurry falling condition is obviously improved, the quantity of quality defects such as hairiness, broken ends and the like in production is also obviously reduced, and finally the quality level of the finished product of the electronic glass fiber cloth is obviously improved.
Description
Technical Field
The invention relates to a sizing agent for secondary sizing of warps of electronic glass fiber cloth and a preparation method thereof, belonging to the technical field of electronic glass fiber cloth.
Background
The glass fiber is an inorganic non-metallic material with excellent performance, has excellent performances of high temperature resistance, corrosion resistance, good chemical stability, electrical insulation and the like, and is widely applied to various industries. The electronic grade glass fiber, namely an alkali-free glass fiber, mainly comprises chemical components such as silicon dioxide, aluminum oxide, calcium oxide and the like. Electronic glass fiber cloth (hereinafter referred to as electronic cloth) woven by the composite material is one of three basic materials of a printed circuit board substrate Copper Clad Laminate (CCL) widely applied to electronic equipment such as computers, communication equipment and the like.
The electronic cloth is a plain weave fabric made of interlaced glass fibers. The production needs to be carried out by the following process flows: 1 warping. According to the requirement of the fabric width, a plurality of yarns are wound into a warp beam in parallel with proper tension. And 2, sizing. The adhesive and the auxiliary agent are mixed with water or other organic solvent to prepare sizing slurry according to the specified formula and process, and the sizing slurry is conveyed to sizing equipment to size warp yarns. 3. And (5) weaving. And selecting a proper loom, which is commonly an air jet loom, and interlacing the warp and weft yarns according to the specification requirement of the fabric to prepare a qualified plain weave fabric. 3. Thermal cleaning and surface treatment. In order to remove the slurry coated on the surface of the glass fiber, the electronic cloth is subjected to heat treatment, which generally comprises continuous heat treatment and batch heat treatment. And surface chemical treatment, namely selecting a proper coupling agent and an auxiliary agent to prepare a treating agent, and performing surface chemical treatment on the electronic cloth so as to be combined with the resin.
The electronic grade glass fiber yarn is a smooth cylinder, has the advantages of high tensile strength, high temperature resistance, good insulativity and the like, but also has the defects of no folding resistance and no wear resistance, and has large friction coefficients between fibers and between other materials, so that the fibers are easy to damage in the production process.
When the electronic-grade glass fiber cloth is subjected to an air-jet weaving process, warp yarns bear complex mechanical external force effects such as stretching, bending and friction, the general electronic-grade glass fiber yarns cannot meet the weaving performance requirement in the high-speed weaving process, hairiness and broken ends are easily generated, and the quality and the production efficiency of finished cloth are seriously influenced.
In order to enable the warp yarns to bear strong friction and impact in the weaving process, secondary sizing is carried out on the warp yarns before weaving, glass fibers are protected, and hairiness and broken ends caused by friction are reduced.
At present, sizing agent for secondary sizing of warp yarns is mainly water-based thermoplastic resin, and is not enough for improving the physical and chemical properties of glass fibers, so that during the production process, sizing falling, hairiness breaking and fiber breakage occur, the production efficiency is influenced, and the quality level of finished products of electronic cloth is greatly reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the sizing agent for secondary sizing of the warp of the electronic glass fiber cloth and the preparation method thereof, which improve the wear resistance of the sized yarn after secondary sizing, thereby improving the conditions of hairiness, broken ends and slurry falling in the weaving production process, improving the appearance quality of the cloth cover and finally meeting the quality requirement of the insulation reinforced material of a downstream Printed Circuit Board (PCB).
The invention is realized by the following technical scheme:
the sizing agent for secondary sizing of the warp of the electronic glass fiber cloth comprises the following components in percentage by mass: 2-40% of rosin resin film-forming agent, 0-12% of other film-forming agent, 0-10% of wetting agent, 0.1-1% of penetrating agent, 0-0.5% of antistatic agent, 0-0.5% of defoaming agent, 0-0.5% of preservative and the balance of pure water.
The sizing agent for secondary sizing of the warp of the electronic glass fiber cloth is characterized in that the rosin resin film forming agent is one or more of water-based rosin emulsion resin, water-based modified rosin resin, water-based maleated rosin resin, water-based propylene rosin resin, water-based fumaric rosin resin or water-based propylene pimaric acid resin.
The sizing agent for secondary sizing of the electronic glass fiber cloth warp is characterized in that the other film forming agent is water-based thermoplastic resin and can be one or more than two of polyvinyl alcohol, polyacrylate and polyurethane.
The lubricant is mineral fat hydrocarbon, polyester modified polysiloxane, fatty acid amide or polyethylene wax emulsion.
The sizing agent for secondary sizing of the warp of the electronic glass fiber cloth is characterized in that the penetrating agent at least comprises one or more of fatty alcohol-polyoxyethylene ether, polysiloxane, polycarboxylate, hydroxyethyl cellulose, fluorocarbon surfactant, silicon surfactant, dioctyl sodium sulfosuccinate and ethoxy polydimethylsiloxane.
The sizing agent for secondary sizing of the warp of the electronic glass fiber cloth is characterized in that the antistatic agent is ammonium salt of alkyl sulfonic acid, ammonium salt of aryl sulfonic acid, ammonium salt of alkyl phosphoric acid, ammonium salt of aryl phosphoric acid or ammonium salt of alkyl aryl phosphoric acid.
The sizing agent for secondary sizing of the electronic glass fiber cloth warp is characterized in that the defoaming agent is silicone, alkyl polyacrylate, polyether modified polysiloxane or ethoxylated modified alkynol.
The sizing agent for secondary sizing of the electronic glass fiber cloth warp is characterized in that the preservative is isothiazolinone, tebuconazole, pyraclostrobin, propyl p-hydroxybenzoate or organic silicon.
The preparation method of the sizing agent for secondary sizing of the warp of the electronic glass fiber cloth comprises the following steps:
(1) injecting a certain amount of pure water into the container, and adding the rosin resin film forming agent;
(2) heating to 60-100 deg.C under proper stirring speed, stirring at constant temperature for 40-60min until stable homogeneous phase slurry is formed;
(3) adding other film forming agents, lubricants, soaking agents, antistatic agents, defoaming agents and preservatives, and stirring for at least 20 min;
(4) adding the residual pure water to adjust the slurry concentration, stirring at a constant temperature of 30-75 ℃, and finally filtering with a filter element with the aperture of 1 mu to obtain the warp sizing slurry.
Rosin is a renewable natural resin, and with the increasing exhaustion of fossil resources on the earth, people are aware of the importance of replacing fossil resources with biological resources to develop chemical products. Rosin resin is a generic name of rosin or modified rosin derivatives which are obtained by using rosin or modified rosin as a raw material and performing esterification reaction on carboxyl and alcohol under a certain temperature condition.
The rosin resin is added into the sizing agent, after the glass fiber yarns are sized and dried, good base surface binding power is formed on the surfaces of the glass fibers, and the tensile strength and the elongation are greatly improved, so that the defects of hairiness, broken filaments, broken ends and the like can be effectively reduced in the weaving process, and the rosin resin has the advantages of easiness in film forming, high drying speed and the like.
The film forming agent can form a protective film on the surface of the glass fiber, can effectively improve the wear resistance between yarns and between mechanical parts, and reduces the problems of hairiness, broken ends and powder falling in the weaving process. The polyvinyl alcohol mainly plays a role of a film forming agent, can form a relatively complete bonding and coating effect on the glass fiber, and the formed size film has good elasticity and good tensile property.
The lubricating property of the warp can be effectively improved by adding the lubricating agent, and the surface friction coefficient of the sizing agent is reduced, so that the wear resistance of the warp is improved, and broken ends caused by friction damage among yarns in the high-speed weaving process are reduced.
And the antistatic agent is added to increase the conductivity of the glass fiber and eliminate static electricity on the glass fiber. The antistatic agent of the invention is selected from ammonium salts of alkyl sulfonic acids, aryl sulfonic acids or alkyl aryl sulfonic acids; one or more of ammonium salts of alkyl phosphoric acid, aryl phosphoric acid or alkyl aryl phosphoric acid can play a role in lubrication, and can form ion conduction and antistatic.
With the increasing production efficiency, the warping speed of the yarn is faster and faster, and the retention time of the yarn in the size box is gradually shortened. Therefore, the formula of the sizing agent needs to be added with a high-efficiency penetrating agent to reduce the surface tension of the sizing agent, so that the sizing agent can quickly and fully penetrate into the yarn to obtain the sized yarn with the specified sizing rate. The penetrating agent used in the invention is one or more of fatty alcohol-polyoxyethylene ether, polysiloxane, polycarboxylate and hydroxyethyl cellulose.
The aqueous medium in the size and high polymer materials such as polyvinyl alcohol are easily polluted by microorganisms in the environment, so that the size is deteriorated, and the phenomena of color change, peculiar smell, viscosity reduction and the like appear, thereby not only causing the loss and waste of the size, but also being more likely to influence the sizing quality. In addition, various microorganisms are easy to breed in the storage process of the beam, and the preservative can effectively inhibit the growth of mould and prevent the electronic cloth from mildewing.
The invention achieves the following beneficial effects:
the film formed by the sizing agent has better coating property and better wear resistance, the slurry falling condition is obviously improved, the quantity of quality defects such as hairiness, broken ends and the like in production is also obviously reduced, and the quality level of the finished product of the electronic glass fiber cloth is obviously improved.
Drawings
FIG. 1 is an SEM micrograph of warp yarns of example 2 after sizing.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example l
Slurries were prepared according to the proportions of table 1.
Example 2
Slurries were prepared according to the proportions of table 1.
Example 3
Slurries were prepared according to the proportions of table 1.
The process of preparation of examples 1, 2 and 3, comprising the steps of:
(1) injecting a certain amount of pure water into the container, and adding the rosin resin film forming agent;
(2) heating to 60-100 deg.C under proper stirring speed, stirring at constant temperature for 40-60min until stable homogeneous phase slurry is formed;
(3) adding other film forming agents, lubricants, soaking agents, antistatic agents, defoaming agents and preservatives, and stirring for at least 20 min;
(4) adding the residual pure water to adjust the slurry concentration, stirring at a constant temperature of 30-75 ℃, and finally filtering with a filter element with the aperture of 1 mu to obtain the warp sizing slurry.
Comparative example 1
Slurries were prepared according to the proportions of table 1.
Comparative example 2
Slurries were prepared according to the proportions of table 1.
Comparative example 3
Slurries were prepared according to the proportions of table 1. Wherein, the water-based rosin emulsion resin is an emulsion, the content of the effective component is 30 percent, and the mass percentage of the effective component in the whole slurry is 9 percent.
The process of preparation of comparative examples 1, 2 and 3, comprising the steps of:
(1) a certain amount of pure water is injected into the container, and polyvinyl alcohol or polyurethane resin is added.
(2) Heating to 90-100 deg.C under proper stirring speed, and stirring at constant temperature for 40-60min until the slurry is clear.
(3) And adding other auxiliary agents, adding the residual pure water to adjust the concentration of the slurry, keeping the temperature of 30-70 ℃ for stirring at constant temperature, and finally filtering by using a filter element with the aperture of 1 mu to obtain the warp sizing slurry.
TABLE 1 slurry formulations of examples and comparative examples (wherein each raw material is in mass percentage, and the balance is pure water)
The sizing agents prepared in the examples and the comparative examples are used for sizing the electronic glass fiber cloth by adopting a conventional sizing method to obtain the glass fiber cloth, the quality of the cloth surface is checked on a checking machine, the data of hundreds of meters of the cloth surface is counted, and the test results are shown in table 2:
table 2 results of performance test of examples and comparative examples
| Defects per hundred meters | Example 1 | Comparative example 1 | Example 2 | Comparative example 2 | Example 3 | Comparative example 3 |
| Warp-wise broken filament | 0.09 | 0.27 | 0.11 | 0.26 | 0.13 | 0.28 |
| Binding yarn | 0.02 | 0.04 | 0.04 | 0.05 | 0.05 | 0.07 |
| Warp direction flaw | 0.11 | 0.31 | 0.13 | 0.31 | 0.18 | 0.35 |
| Surface filoplume | Is less | Much more | Is less | Much more | Is less | Much more |
Hectometer defects are a statistic, referring to the number of defects (warp yarn breaks and yarn follows) per hectometer of cloth length.
After other conditions of the fixed sizing process and the change of the formula of the sizing agent, the experiments are carried out, and the number of warp-wise hectometre defects and the hairiness condition of the cloth surface of the finished product are counted, and the results show that 7628, 2116 and 1080 cloth produced by using the sizing agents of the examples 1, 2 and 3 have better cloth surface quality than the sizing agents of the comparative examples 1, 2 and 3, wherein the sizing agents of different cloth types have different concentrations, and the thinner the yarn type is, the more the sizing agent protection is needed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The sizing agent for secondary sizing of the warp of the electronic glass fiber cloth is characterized by comprising the following components in percentage by mass: 2-40% of rosin resin film-forming agent, 0-12% of other film-forming agent, 0-10% of wetting agent, 0.1-1% of penetrating agent, 0-0.5% of antistatic agent, 0-0.5% of defoaming agent, 0-0.5% of preservative and the balance of pure water.
2. The sizing agent for secondary sizing of the warp yarn of the electronic glass fiber cloth as claimed in claim 1, wherein the rosin resin film forming agent is one or more of aqueous rosin emulsion resin, aqueous modified rosin resin, aqueous maleic rosin resin, aqueous propylene rosin resin, aqueous fumaric rosin resin or water-soluble propylene pimaric acid resin.
3. The sizing agent for secondary sizing of the electronic glass fiber cloth warp yarn as claimed in claim 1, wherein the other film forming agent is water-based thermoplastic resin which can be one or more than two of polyvinyl alcohol, polyacrylate and polyurethane.
4. The sizing agent for secondary sizing of the warp yarn of the electronic glass fiber cloth as claimed in claim 1, wherein the lubricant is mineral aliphatic hydrocarbon, polyester modified polysiloxane, fatty acid amide or polyethylene wax emulsion.
5. The sizing agent for secondary sizing of the warp yarn of the electronic glass fiber cloth as claimed in claim 1, wherein the soaking agent is one or more of fatty alcohol-polyoxyethylene ether, polysiloxane, polycarboxylate, hydroxyethyl cellulose, fluorocarbon surfactant, silicon surfactant, dioctyl sodium sulfosuccinate, and ethoxy polydimethylsiloxane.
6. The sizing agent for secondary sizing of warp yarn of electronic glass fiber cloth as claimed in claim 1, wherein the antistatic agent is ammonium salt of alkyl sulfonic acid, ammonium salt of aryl sulfonic acid, ammonium salt of alkyl phosphoric acid, ammonium salt of aryl phosphoric acid or ammonium salt of alkyl aryl phosphoric acid.
7. The sizing agent for secondary sizing of the warp yarn of the electronic glass fiber cloth as claimed in claim 1, wherein the defoaming agent is silicone, alkyl polyacrylate, polyether modified polysiloxane or ethoxylated modified alkynol.
8. The sizing agent for secondary sizing of the warp yarn of the electronic glass fiber cloth according to claim 1, wherein the preservative is isothiazolinone, tebuconazole, pyraclostrobin, propyl p-hydroxybenzoate or organosilicon.
9. The method for preparing the sizing agent for the secondary sizing of the warp yarn of the electronic glass fiber cloth according to any one of claims 1 to 8, which is characterized by comprising the following steps of:
(1) injecting a certain amount of pure water into the container, and adding the rosin resin film forming agent;
(2) heating to 60-100 deg.C under proper stirring speed, stirring at constant temperature for 40-60min until stable homogeneous phase slurry is formed;
(3) adding other film forming agents, lubricants, soaking agents, antistatic agents, defoaming agents and preservatives, and stirring for at least 20 min;
(4) adding the residual pure water to adjust the slurry concentration, stirring at a constant temperature of 30-75 ℃, and finally filtering with a filter element with the aperture of 1 mu to obtain the warp sizing slurry.
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Cited By (2)
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| CN114438789A (en) * | 2021-12-31 | 2022-05-06 | 清远凯荣德电子专用材料有限公司 | Slurry for electronic-grade glass fiber cloth and preparation method thereof |
| CN116426071A (en) * | 2023-05-25 | 2023-07-14 | 江苏大易材料科技有限公司 | Thermoplastic continuous fiber strip with high mechanical property and production process thereof |
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| CN114438789A (en) * | 2021-12-31 | 2022-05-06 | 清远凯荣德电子专用材料有限公司 | Slurry for electronic-grade glass fiber cloth and preparation method thereof |
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| CN116426071A (en) * | 2023-05-25 | 2023-07-14 | 江苏大易材料科技有限公司 | Thermoplastic continuous fiber strip with high mechanical property and production process thereof |
| CN116426071B (en) * | 2023-05-25 | 2024-03-19 | 江苏大易材料科技有限公司 | Thermoplastic continuous fiber strip with high mechanical property and production process thereof |
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