CN112777950B - Glass fiber impregnating compound and preparation method and application thereof - Google Patents
Glass fiber impregnating compound and preparation method and application thereof Download PDFInfo
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- CN112777950B CN112777950B CN202110135301.5A CN202110135301A CN112777950B CN 112777950 B CN112777950 B CN 112777950B CN 202110135301 A CN202110135301 A CN 202110135301A CN 112777950 B CN112777950 B CN 112777950B
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 106
- 150000001875 compounds Chemical class 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 129
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 75
- 239000007787 solid Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000000314 lubricant Substances 0.000 claims abstract description 51
- 239000004094 surface-active agent Substances 0.000 claims abstract description 44
- 239000000080 wetting agent Substances 0.000 claims abstract description 39
- 239000004593 Epoxy Substances 0.000 claims abstract description 34
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 239000012745 toughening agent Substances 0.000 claims abstract description 30
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 25
- 125000003368 amide group Chemical group 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 238000007865 diluting Methods 0.000 claims description 34
- 238000004513 sizing Methods 0.000 claims description 20
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 12
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical group C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- -1 acetylene glycol Chemical compound 0.000 claims description 7
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical group OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 6
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 5
- 150000002193 fatty amides Chemical group 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 14
- 238000002791 soaking Methods 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000009941 weaving Methods 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 description 15
- 239000011347 resin Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 9
- 239000007822 coupling agent Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 206010020112 Hirsutism Diseases 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 229920001223 polyethylene glycol Polymers 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000004842 bisphenol F epoxy resin Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 125000003749 fatty amide group Chemical group 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006355 external stress Effects 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- IUVCFHHAEHNCFT-INIZCTEOSA-N 2-[(1s)-1-[4-amino-3-(3-fluoro-4-propan-2-yloxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-6-fluoro-3-(3-fluorophenyl)chromen-4-one Chemical compound C1=C(F)C(OC(C)C)=CC=C1C(C1=C(N)N=CN=C11)=NN1[C@@H](C)C1=C(C=2C=C(F)C=CC=2)C(=O)C2=CC(F)=CC=C2O1 IUVCFHHAEHNCFT-INIZCTEOSA-N 0.000 description 1
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 description 1
- 229920002593 Polyethylene Glycol 800 Polymers 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/40—Organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/36—Epoxy resins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention provides a glass fiber impregnating compound, which contains a solid component and water, wherein the solid component comprises a silane coupling agent, a film forming agent, a toughening agent, a lubricant, a wetting agent, a surfactant, an anti-aging agent and a pH value regulator; the mass of the solid component accounts for 5.5-7.5% of the total mass of the impregnating compound. The solid mass of each component accounts for the total mass of the impregnating compound solid, and the percentage of the solid mass of each component is as follows: 4 to 28 percent of silane coupling agent; 45% -80% of film-forming agent; 1 to 5 percent of toughening agent; 3% -17% of a lubricant; 1 to 5 percent of wetting agent; 1 to 6 percent of surfactant; 1 to 6 percent of age resister; 1 to 8 percent of pH value regulator; wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent. The glass fiber yarn produced by the impregnating compound is soft, has little filoplume, very good dispersion uniformity, good compatibility with epoxy resin interface and good soaking effect; meanwhile, the composite material is suitable for pultrusion profiles and wind power base material weaving processes, and the material prepared after being compounded with epoxy resin has excellent fatigue resistance and mechanical properties.
Description
Technical Field
The invention relates to the technical field of glass fiber production, in particular to a high-fatigue-resistance glass fiber impregnating compound for epoxy resin and a preparation method and application thereof.
Background
The glass fiber composite material not only has the advantages of high strength and high modulus of glass fiber, but also has the characteristics of toughness and ductility of resin. Over the past few decades, the fiberglass composite industry has developed dramatically. In addition, the glass fiber composite material has the characteristic of corrosion resistance, so that the field of replacing the traditional material is wider and wider.
In recent years, glass fiber has been widely used in high-end material fields such as wind blades and oil transportation high-pressure pipelines. Along with the policy stimulation of national clean energy, the demand of the glass fiber for wind power is also increasing. More than 90% of wind blades on the market are formed by vacuum infusion curing of glass fibers and epoxy resin, and the composite material for the blades needs very high strength and modulus, which can be realized by upgrading and updating of glass formula. Besides, the blade has a key index: the fatigue resistance value determines the safety coefficient and the service life of the blade in a complex aerodynamic environment, the performance is mainly determined by the interface bonding effect of the glass fiber and the resin, the interface bonding effect is good, the glass fiber is not easy to separate from the resin under long-time load, and the fatigue resistance effect is good. Glass fiber composites in other fields also put clear requirements on fatigue resistance: for example, a high-pressure pipeline needs to bear different pressures for a long time, so that the requirement on pressure fatigue resistance is high; the pultruded profiles of the sports apparatus class also have requirements and standards for fatigue testing due to their high frequency of use.
How to improve the fatigue performance of glass fiber composites has been a very hot and leading issue in the industry. A basic consensus is reached within the industry: fatigue property can be really improved only by starting from glass fiber as a reinforcing material, and because the fatigue resistance of resin is much better than that of glass fiber on the whole, the fatigue resistance can be improved in all directions only by filling short plates.
The method for improving the wettability and the interface bonding of the glass fiber and the glass fiber by adjusting the dispersion state of the glass fiber and increasing the fatigue-resistant raw materials on the surface of the glass fiber through the design of the impregnating compound formula is the most effective method for improving the fatigue performance of the glass fiber composite material.
Disclosure of Invention
The invention aims to provide a glass fiber impregnating compound, glass fiber yarns produced by coating the impregnating compound have less hairiness and good dispersibility, can be soaked in epoxy resin very quickly and completely, and have good compatibility; meanwhile, the method is suitable for pultrusion profiles and wind power base weaving processes. After curing and forming, the interface combination of the glass fiber and the epoxy resin is good, the anti-strain effect of the interface layer is good, and the prepared composite material has excellent fatigue resistance and mechanical property.
According to one aspect of the invention, a glass fiber impregnating compound is provided, which comprises a solid component and water; the mass of the solid component accounts for 5.5-7.5% of the total mass of the impregnating compound; the solid component of the impregnating compound comprises the following components, wherein the mass of each component in the solid component accounts for the total mass of the impregnating compound, and the mass percentage of each component in the solid component is as follows:
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent.
Preferably, the mass percentage of each component of the solid component in the impregnating compound to the total mass of the solid component of the impregnating compound is as follows:
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent.
Preferably, the mass percentage of each component of the solid component in the impregnating compound to the total mass of the solid component of the impregnating compound is as follows:
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent; the mass ratio of the epoxy silane coupling agent to the amido silane coupling agent is 1: 1-1: 2.
Preferably, the film forming agent is a mixture of a first film forming agent and a second film forming agent; the first film forming agent is bisphenol A type epoxy resin with the molecular weight of 2800-; the second film forming agent is bisphenol F type epoxy resin with the molecular weight of 250-400.
Preferably, the mass ratio of the first film forming agent to the second film forming agent is 2:1 to 3: 1.
Preferably, the toughening agent is epoxy and polyether modified copolymer; the lubricant is PEG lubricant; the wetting agent is selected from acetylene glycol wetting agents; the surfactant is selected from fatty amide surfactants; the anti-aging agent is sulfite; the pH value regulator is acid.
Preferably, the mass of each component of the solid component in the impregnating compound in percentage of the total mass of the solid component is as follows:
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent;
the film forming agent is a mixture of a first film forming agent and a second film forming agent; the first film forming agent is bisphenol A type epoxy resin with the molecular weight of 2800-; the second film forming agent is bisphenol F type epoxy resin with the molecular weight of 250-400;
the toughening agent is epoxy and polyether modified copolymer; the lubricant is PEG lubricant; the wetting agent is selected from acetylene glycol wetting agents; the surfactant is selected from fatty amide surfactants; the anti-aging agent is sulfite; the pH value regulator is acid.
In the invention, the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent. The silane coupling agent belongs to a raw material with stronger reaction activity in the impregnating compound, and the hydrolyzed active group silicon hydroxyl can react with the silicon hydroxyl on the surface of the glass fiber to form a Si-O-Si bond. The coupling agent has two main functions in the glass fiber: (1) in the glass fiber drawing and forming process, the glass fiber can form surface microcracks under the action of traction force, silane coupling agent molecules can well compensate the microcracks through the reaction with silicon hydroxyl on the surface of the glass fiber, and the normal drawing of the glass fiber is ensured; (2) the silane coupling agent is a bridge between the glass fiber and the resin, the R group on the silane coupling agent can interact with the functional group on the matrix resin, and the hydroxyl group can be combined with the hydroxyl group on the glass fiber, so that the silane coupling agent is a key factor for determining the strength of the glass fiber and the strength of the glass fiber reinforced plastic product. By selecting a proper silane coupling agent, the forming stability of the glass fiber can be improved, and the comprehensive performance of the subsequently prepared glass fiber composite material can be improved. According to the invention, a mixed coupling agent of an epoxy silane coupling agent and an amido silane coupling agent is selected, wherein an R group in the epoxy silane coupling agent is an epoxy group, and according to the principle of similar intermiscibility, the epoxy silane coupling agent can enable an epoxy film-forming agent to be rapidly and efficiently coated on the surface of glass fiber during the production of glass fiber, and simultaneously, in the subsequent preparation process of a composite material, epoxy resin can rapidly soak the glass fiber; the amido silane coupling agent selects the R group as the long molecular chain amido group, the amido group has very high activity, and the R group can quickly react with the epoxy resin in the heating process to form a very stable chemical bond, so that the interface bonding effect of the glass fiber and the epoxy resin is enhanced, the mechanical property of the composite material is improved, in addition, the R group of the long molecular chain has a certain flexible chain segment, the stress generated at the interface can be effectively absorbed in the use process of the composite material, and the fatigue resistance of the composite material is obviously enhanced. Illustratively, the epoxysilane coupling agents of the present invention are A-187 and KH560, etc., and the amidosilane coupling agents are AX-106 and SA-102A, etc.
The use amount of the silane coupling agent needs to be controlled within a reasonable range, too little silane coupling agent is added, so that the interface joining effect is insufficient, the drawing influence caused by microcracks cannot be effectively compensated, the interface combination of the glass fiber and the resin matrix is also influenced, and finally the mechanical property of the composite material is insufficient; too much addition, which saturates the corresponding active ingredients, results in waste and increases the manufacturing cost. In the present invention, the content of the silane coupling agent in the solid component is controlled to be 4% to 28%, preferably 6% to 23%, more preferably 9% to 18%, and still more preferably 11% to 15%. Meanwhile, the proportion of the epoxy silane coupling agent and the amido silane coupling agent in the invention is also reasonably controlled, and the excessive epoxy silane coupling agent is beneficial to the permeation of epoxy resin to glass fiber, but the mechanical property and fatigue resistance of the whole body are influenced because the too little amido silane coupling agent is used; however, too much amido silane coupling agent can make the glass fiber have good bundling property but the yarn is hard, which is not favorable for the yarn dispersion and the resin penetration. In the silane coupling agent, when the mass ratio of the epoxy silane coupling agent to the amido silane coupling agent is 1: 1-1: 2, all properties of the glass fiber produced by the impregnating compound prepared by matching with other components can well meet all index requirements. Preferably, the mass ratio of the epoxy silane coupling agent to the amido silane coupling agent is 1: 1-1: 1.8; specifically, it is 1: 1.3.
The film forming agent is the most important component in the sizing agent, can determine the wear resistance of the glass fiber and the manufacturability of subsequent processing, and can improve the interface combination of the glass fiber and matrix resin. The proper film forming agent is selected, so that the bundling property and the smoothness in subsequent use of the yarn can be ensured, and the glass fiber can be ensured to have the performance of rapid soaking. In addition, the film forming agent is a main component in the sizing agent, so that the film forming agent is also a main component for absorbing stress at an interface joint, and therefore, the selection of a proper film forming agent also has an important influence on fatigue resistance.
The film forming agent used by the invention adopts epoxy emulsion formed by epoxy resin, preferably, the film forming agent is formed by mixing two epoxy emulsions with different functions, wherein the first film forming agent adopts bisphenol A type epoxy resin with the molecular weight of 2800-3500, and the bisphenol A type epoxy resin has the molecular weight and a polyfunctional group with high branching degree; the second film forming agent is bisphenol F epoxy resin with the molecular weight of 250-400, and the bisphenol F epoxy resin has small molecular weight and low viscosity. The bisphenol A epoxy with high branching degree has high freedom degree of movement among chain segments, can effectively absorb and disperse stress, obviously enhances the fatigue resistance of the composite material, can further enhance the interface combination of the glass fiber and the matrix resin by the multi-functional group structure, and ensures the bundling property and the process smoothness of the glass fiber by the high molecular weight. Bisphenol F epoxy resins have low viscosity and steric hindrance, and, in addition, have a low molecular weight, so as to ensure uniform coating of the film-forming agent and very easy dispersion of the glass fibers after tension. Too much first film forming agent causes too high bundling property of the glass fiber yarn to be easily unraveled, thereby affecting permeability of the yarn, while too little first film forming agent, although permeability of the yarn becomes good, affects bundling property, processability, and fatigue resistance of the yarn. When the mass ratio of the first film forming agent to the second film forming agent is 2: 1-3: 1, all properties of the prepared glass fiber can reach excellent degrees. Preferably, the mass ratio of the first film forming agent to the second film forming agent is 2.2: 1-2.6: 1; specifically, it is 2.4: 1. The theoretical solid mass of the film forming agent after water removal accounts for 45-80% of the total mass of the solid components of the impregnating compound, preferably 55-78%, further preferably 55-72%, and most preferably 56-70%. Within the above range, the film-forming agent can not only protect the drawing, bundling and fair and smooth properties of the glass fiber, but also ensure the compatibility of the glass fiber with the matrix resin.
The toughening agent is one of the key raw materials for improving the fatigue resistance of the glass fiber. Preferably, the toughening agent is a long-chain epoxy and polyether modified copolymer, and the fatigue resistance principle is that the degree of freedom of a long-chain flexible chain segment is high, so that external stress can be absorbed in a large amount, and the damage of the external stress to an interface is effectively weakened. In addition, the copolymer contains a large number of ether bonds and epoxy groups, so that the copolymer can be ensured to have very good compatibility with both the impregnating compound and the matrix resin, and the soaking speed of the glass fiber in the epoxy resin is accelerated. The theoretical solid mass of the flexibilizer after water removal accounts for 1-5% of the total mass of the solid components of the sizing agent, preferably 2-5%, more preferably 2-4%, and most preferably 2-3%.
The lubricant is an essential component in the glass fiber impregnating compound, and is mainly used for ensuring the smoothness of the glass fiber in the drawing process, reducing hairiness generated in the subsequent use process of the glass fiber and improving the use smoothness of the glass fiber in the subsequent processing process. Preferably, the lubricant of the present invention is a PEG-based lubricant; more preferably, the lubricant is a mixture of one or more of PEG600, PEG800, PEG1000, and PEG 1200. The PEG lubricant has good solubility in water, can play a role in lubricating, can ensure the smoothness of the glass fiber in the using process, and can improve the permeation speed of epoxy resin to the glass fiber and enhance the interface bonding effect due to the similar intermiscibility of a-C-O-C-structure on the main chain and an epoxy group. The use amount of the lubricant has great influence on the glass fiber, and the excessive lubricant can influence the wire drawing and the smoothness in the use process, and easily cause the problems of wire drawing breakage, broken wires, broken yarns and the like in subsequent use; however, excessive lubricant used affects the bundling property of the glass fiber yarn, and excessive lubricant is easily adhered to the surface of the tension roller, and the yarn is adhered to the tension roller to affect the smoothness of the yarn as the adhered lubricant is increased. Therefore, the theoretical solid mass of the lubricant after water removal accounts for 3-17% of the total solid component content of the sizing agent, preferably 5-17%, more preferably 6-13%, and most preferably 7-11%.
The wetting agent has the main functions of reducing the whole surface tension of the impregnating compound, accelerating the soaking speed of the glass fiber in the matrix resin and enhancing the interface combination of the glass fiber and the matrix resin. Preferably, the wetting agent of the invention is an acetylene glycol wetting agent, wherein the acetylene glycol contains hydroxyl and can be well combined with the glass fiber, and the unsaturated structure on the skeleton can have strong non-covalent interaction with the benzene ring in the epoxy, so that the wetting of the glass fiber and the epoxy resin can be further accelerated. The theoretical solid mass of the wetting agent after water removal accounts for 1-5% of the total mass of the solid components of the sizing agent, preferably 1-4%, more preferably 2-4%, and most preferably 2-3%.
The surfactant in the invention has the function of improving the stability of the sizing agent emulsion and ensuring that the sizing agent emulsion is not settled in the conventional drawing process to cause uneven coating; the amount of surfactant also has a greater effect on the glass fibers. The amount of the impregnating compound is too small, the impregnating compound can be settled along with the lapse of time, the problem of uneven surface coating is caused, and the performance of the glass fiber is finally influenced; after the dosage is too large and reaches the 'saturated concentration', the dosage is added, which has no effect on the stability of the system and also increases the production cost; in addition, most surfactants are charged, while the matrix resin is uncharged, and excessive charge concentration can affect the penetration of the glass fibers by the epoxy resin. Preferably, the surfactant of the present invention is a fatty amide surfactant. The theoretical solid mass of the surfactant after water removal accounts for 1-6% of the total mass of the solid components of the impregnating compound, preferably 1-5%, more preferably 1-4%, and most preferably 2-4%.
The introduction of the anti-aging agent mainly ensures that the surface active groups of the glass fibers do not lose efficacy due to aging, the service life of the finished glass fiber products is prolonged, the normal storage time of the glass fibers is prolonged, the processability of the glass fibers in a long period of time is ensured not to be reduced, and meanwhile, the long-term retention of the active groups can ensure that the glass fibers can be quickly soaked even if the glass fibers are stored for a long time. Preferably, the anti-aging agent in the present invention is sulfite. The dosage of the anti-aging agent can not be too large, otherwise, the whole impregnating compound emulsion is demulsified and unstable due to too large ion concentration in the impregnating compound emulsion, so that the impregnating compound can not be uniformly coated on the surface of the glass fiber, the wire drawing process is unstable, and the hairiness of the finished glass fiber is increased. The aging inhibitor of the present invention has a theoretical solid mass after water removal of 1% to 6%, preferably 1% to 5%, more preferably 1% to 4%, and still more preferably 2% to 3% of the total solid component mass of the sizing agent.
The pH value regulator is mainly used for promoting the hydrolysis of the coupling agent and regulating the pH value of the prepared impregnating compound to be controlled within the range of 5-6. Preferably, the pH regulator in the invention is an acid; more preferably, the pH value regulator is one or more of citric acid, oxalic acid and acetic acid. The theoretical solid mass of the pH value regulator after water removal accounts for 1-8% of the total mass of the solid components of the impregnating compound, preferably 1-7%, more preferably 1-5%, and most preferably 2-5%.
According to a second aspect of the present invention, there is provided a method for preparing the glass fiber sizing agent, comprising the steps of:
(1) adding water accounting for 30-50% of the total mass of the impregnating compound into a container, sequentially adding a pH value regulator and a silane coupling agent, and stirring until the solution is clear;
(2) diluting the film forming agent with a small amount of water and adding the diluted film forming agent into the container;
(3) diluting the toughening agent with 50wt% of ethanol water solution, and adding the diluted toughening agent into the container;
(4) diluting the lubricant with water and adding the diluted lubricant into the container;
(5) diluting the wetting agent with water and adding the diluted wetting agent into the container;
(6) diluting the surfactant with water and adding the diluted surfactant into a container;
(7) diluting the anti-aging agent with water and adding the diluted anti-aging agent into the container;
(8) and (4) supplementing the balance of water into the container, and uniformly stirring to obtain the product.
Preferably, in the step (2), the film forming agent is diluted by water with the mass of 3-5 times of that of the film forming agent.
Preferably, in the step (3), the toughening agent is diluted by a 50% ethanol aqueous solution with the mass 5-10 times of that of the toughening agent.
Preferably, in the step (4), the lubricant is diluted by water with the mass of 5-10 times of that of the lubricant.
Preferably, in the step (5), the wetting agent is diluted by water with the mass of 5-10 times of that of the wetting agent.
Preferably, in the step (6), the surfactant is diluted by water with the mass of 5-6 times of that of the surfactant.
Preferably, in the step (7), the age resister is diluted with water in an amount of 5 to 8 times the mass of the age resister.
According to a third aspect of the present invention, there is provided a glass fiber product produced by coating the glass fiber size.
According to a fourth aspect of the present invention, there is provided a use of the glass fiber sizing agent in the field of epoxy-based composite materials.
The glass fiber produced by coating the impregnating compound formula has the advantages of less yarn hairiness, good dispersibility, quick and complete soaking in epoxy resin and good compatibility; meanwhile, the method is suitable for pultrusion profiles and wind power base weaving processes. After curing and forming, the interface combination of the glass fiber and the epoxy resin is good, the anti-strain effect of the interface layer is good, and the prepared composite material has excellent fatigue resistance and mechanical property and meets the requirements of the market and the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The glass fiber sizing agent contains a solid component and water, wherein the solid component comprises a silane coupling agent, a film forming agent, a toughening agent, a lubricant, a wetting agent, a surfactant, an anti-aging agent and a pH value regulator; wherein, the solid component of the impregnating compound accounts for 5.5-7.5% of the total mass of the impregnating compound; the mass of each component of the solid component in the impregnating compound accounts for the following percentage of the total mass of the solid component: 4 to 28 percent of silane coupling agent; 45% -80% of film-forming agent; 1 to 5 percent of toughening agent; 3% -17% of a lubricant; 1 to 5 percent of wetting agent; 1 to 6 percent of surfactant; 1 to 6 percent of age resister; 1 to 8 percent of pH value regulator.
Preferably, the mass of each component of the solid component in the impregnating compound accounts for the following percentage of the total mass of the solid component: 6 to 23 percent of silane coupling agent; 55% -78% of film-forming agent; 2 to 5 percent of toughening agent; 5% -17% of a lubricant; 1% -4% of a wetting agent; 1-5% of a surfactant; 1 to 5 percent of age resister; 1 to 7 percent of pH value regulator.
Further preferably, the mass percentage of each component of the solid component in the impregnating compound to the total mass of the solid component is as follows: 9 to 18 percent of silane coupling agent; 55% -72% of film-forming agent; 2 to 4 percent of toughening agent; 6 to 13 percent of lubricant; 2 to 4 percent of wetting agent; 2 to 5 percent of surfactant; 1 to 4 percent of age resister; 1 to 5 percent of pH value regulator.
More preferably, the mass percentage of each component of the solid component in the impregnating compound to the total mass of the solid component is as follows: 11 to 15 percent of silane coupling agent; 56% -70% of film-forming agent; 2 to 3 percent of toughening agent; 7% -11% of a lubricant; 2 to 3 percent of wetting agent; 2 to 4 percent of surfactant; 2 to 3 percent of age resister; 2 to 5 percent of pH value regulator.
Preferably, the silane coupling agent is a mixture of epoxy silane and amido silane coupling agent, the mass ratio of the epoxy silane to the amido silane coupling agent is 1: 1-1: 2, and the specific ratio is 1: 1.3; the film forming agent is a mixture of a first film forming agent and a second film forming agent, wherein the first film forming agent is bisphenol A type epoxy resin with the molecular weight of 2800-3500, the second film forming agent is bisphenol F type epoxy resin with the molecular weight of 250-400, and the mass ratio of the first film forming agent to the second film forming agent is 2: 1-3: 1; the toughening agent is epoxy and polyether modified copolymer; the lubricant is PEG lubricant; the wetting agent is an acetylene glycol wetting agent; the surfactant is fatty amide surfactant; the anti-aging agent is sulfite; the pH regulator is an acid.
The preparation method of the glass fiber impregnating compound comprises the following steps:
(1) adding water accounting for 30-50% of the total mass of the impregnating compound into a container, sequentially adding a pH value regulator and a silane coupling agent, and stirring until the solution is clear;
(2) diluting the film forming agent with a small amount of water and adding the diluted film forming agent into the container;
(3) diluting the toughening agent by using 50wt% of ethanol water solution, and adding the solution into the container;
(4) diluting the lubricant with water and adding the diluted lubricant into the container;
(5) diluting the wetting agent with water and adding the diluted wetting agent into the container;
(6) diluting the surfactant with water and adding the diluted surfactant into a container;
(7) diluting the anti-aging agent with water and adding the anti-aging agent into the container;
(8) and (4) supplementing the balance of water into the container, and uniformly stirring to obtain the product.
Preferably, the preparation method of the glass fiber impregnating compound comprises the following steps:
(1) adding water accounting for 30-50% of the total mass of the impregnating compound into a container provided with a variable speed stirrer, then sequentially and slowly adding a pH value regulator and a silane coupling agent, and stirring until the solution is clear;
(2) diluting the film forming agent with a small amount of water, and adding the diluted film forming agent into the container, wherein the mass of the water is 3-5 times of that of the film forming agent;
(3) diluting the toughening agent with 50wt% of ethanol aqueous solution, and adding the diluted toughening agent into the container, wherein the mass of the ethanol aqueous solution is 5-10 times of that of the toughening agent
(3) Diluting a lubricant with water and then adding the diluted lubricant into the container, wherein the mass of the water is 5-10 times of that of the lubricant;
(4) diluting a wetting agent with water and adding the diluted wetting agent into the container, wherein the mass of the water is 5-10 times that of the lubricant;
(5) diluting a surfactant with water, and adding the diluted surfactant into a container, wherein the mass of the water is 5-6 times of that of the defoaming agent;
(6) diluting an anti-aging agent with water and adding the diluted anti-aging agent into the container, wherein the mass of the water is 5-8 times that of the anti-aging agent;
(7) and finally, supplementing the balance of water into the container, and uniformly stirring to obtain the product.
The specific formulation of some examples of the glass fiber sizing agent of the present invention is shown in table 1, wherein the solid content of examples 1 to 5 is 6.5%, the solid content of examples 6 to 9 is 5.5%, the solid content of examples 10 to 14 is 7.5%, and the numerical values in table 1 are the mass percentages of the components of the solid component in the total mass of the solid component.
TABLE 1 compounding ratio of solid components of impregnating compound in examples
TABLE 1 compounding ratio of solid components of impregnating compound of (subsequent) example
| Components | Example 8 | Example 9 | Example 10 | Example 11 | Example 12 | Example 13 | Example 14 |
| Epoxy silane coupling agent | 8.0％ | 4.0％ | 7.5％ | 9.0％ | 7.0％ | 7.0％ | 7.5％ |
| Amidosilane coupling agents | 9.5％ | 6.0％ | 9.5％ | 18.0％ | 14.0％ | 13.0％ | 10.5％ |
| First film Forming agent | 35.0％ | 37.0％ | 50.0％ | 35.0％ | 40.0％ | 62.0％ | 0％ |
| Second film Forming agent | 17.5％ | 20.0％ | 17.0％ | 13.0％ | 14.0％ | 0％ | 65.0％ |
| Toughening agent | 5.0％ | 4.5％ | 4.5％ | 3.5％ | 2.5％ | 3.0％ | 2.0％ |
| Lubricant agent | 17.0％ | 11.0％ | 3.0％ | 8.0％ | 14.5％ | 9.0％ | 7.0％ |
| Wetting agent | 3.0％ | 2.5％ | 1.0％ | 4.0％ | 3.0％ | 2.0％ | 3.0％ |
| Surface active agent | 1.0％ | 5.5％ | 3.0％ | 4.0％ | 1.0％ | 1.0％ | 1.0％ |
| Anti-aging agent | 2.0％ | 2.5％ | 2.5％ | 1.0％ | 2.5％ | 1.0％ | 2.0％ |
| pH value regulator | 2.0％ | 7.0％ | 2.0％ | 4.5％ | 1.5％ | 2.0％ | 2.0％ |
| Total amount of | 100％ | 100％ | 100％ | 100％ | 100％ | 100％ | 100％ |
In order to better illustrate the invention, the following examples are further included, which define specific product designations for each ingredient, it being understood that the following description is intended to illustrate the invention and not to limit the scope of the invention in any way.
Example A1
The solid content of the impregnating agent is 6.5%, and the mass percentage of each component of the solid component in the total mass of the solid component is expressed as follows
Example A2
The solid content of the impregnating compound is 5.5 percent, and the mass percentage of each component of the solid component in the total mass of the solid component is expressed as follows
Comparative example 1
The solid content of the impregnating compound is 6.5%, and the mass of each component of the solid component accounts for the following percentage of the total mass of the solid component:
the preparation method of comparative example 1, comprising the steps of:
(1) adding water accounting for 30-50% of the total amount into a container provided with a variable speed stirrer, respectively and sequentially adding a pH value regulator and a coupling agent, and stirring until the solution is clear;
(2) diluting a film forming agent by using water with the mass 5-8 times of that of the film forming agent, and adding the diluted film forming agent into a container;
(3) diluting a lubricant with water with the mass being 10-15 times that of the lubricant, and adding the diluted lubricant into a container;
(4) diluting the anti-aging agent with water which is 10-15 times of the weight of the anti-aging agent, and adding the anti-aging agent into a container;
(5) diluting a surfactant with water of which the mass is 10-15 times that of the surfactant, and adding the surfactant into a container;
(6) and finally, supplementing the balance of water into the container, and uniformly stirring to obtain a finished product.
Comparative example 2
The solid content of the impregnating agent is 5.5%, and the mass of each component of the solid component accounts for the total mass of the solid component, and the mass percentage of each component of the solid component is as follows:
the preparation method of comparative example 2, comprising the steps of:
(1) adding water accounting for 30-50% of the total mass of the impregnating compound into a container provided with a variable speed stirrer, then sequentially and slowly adding a pH value regulator and a silane coupling agent, and stirring until the solution is clear;
(2) diluting the film forming agent with a small amount of water, and adding the diluted film forming agent into the container, wherein the mass of the water is 3-5 times that of the film forming agent;
(3) diluting the toughening agent with 50wt% ethanol water solution, and adding into the container, wherein the mass of the ethanol water solution is 5-10 times of that of the toughening agent
(3) Diluting a lubricant with water and then adding the diluted lubricant into the container, wherein the mass of the water is 5-10 times of that of the lubricant;
(4) diluting a wetting agent with water and then adding the diluted wetting agent into the container, wherein the mass of the water is 5-10 times of that of the wetting agent;
(5) diluting a surfactant with water and adding the diluted surfactant into a container, wherein the mass of the water is 5-6 times that of the surfactant;
(6) diluting an anti-aging agent with water and adding the diluted anti-aging agent into the container, wherein the mass of the water is 5-8 times that of the anti-aging agent;
(7) and finally, supplementing the balance of water into the container, and uniformly stirring to obtain the product.
The results of testing the properties of the glass fiber sizes of examples 1-14 of the present invention, examples A1-A2, and comparative examples 1-2 are reported in Table 2.
TABLE 2 results of performance test of examples and comparative examples
TABLE 2 results of the performance tests of (subsequent) examples and comparative examples
TABLE 2 results of the Performance test of (subsequent) examples and comparative examples
Note: (1) all data are based on the 1200tex yarn test; (2) the 90 degree tensile strength is tested based on ISO527-5 test standard; (3) fatigue is tested based on the ISO13003 test standard.
As can be seen from the examples, through the selection of the types and the content design of the components of the impregnating compound, the impregnating compound formula meeting the requirements can be obtained, and compared with the comparative examples 1-2, the glass fibers prepared by the examples 1-14 and A1-A2 of the invention have the advantages of good performance, loose after over-tension, soft yarn quality, good soaking effect in epoxy resin, excellent mechanical property and excellent fatigue performance; the glass fibers prepared in examples 1 and 6 have the best performance, less hairiness, good yarn bundling property, looseness after over tension, complete soaking in epoxy resin, good interface bonding property and obviously better fatigue performance than products on the market.
In conclusion, the glass fiber yarns produced by the high-permeability glass fiber impregnating compound for the epoxy resin have good bundling property, less hairiness, are loose after over-tension and are completely soaked in the epoxy resin; the compatibility with epoxy resin is very good, and the prepared composite material has very excellent mechanical property and fatigue property.
Finally, it should be noted that: in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A glass fiber impregnating compound is characterized by comprising a solid component and water; the solid component comprises a silane coupling agent, a film forming agent, a toughening agent, a lubricating agent, a wetting agent, a surfactant, an anti-aging agent and a pH value regulator; the mass of the solid component accounts for 5.5-7.5% of the total mass of the impregnating compound;
wherein the mass of each component in the solid component accounts for the total mass of the impregnating compound solid, and the mass percentage of each component in the solid component is as follows:
4% -28% of a silane coupling agent;
45% -80% of a film forming agent;
1% -5% of a toughening agent;
3% -17% of a lubricant;
1% -5% of a wetting agent;
1% -6% of a surfactant;
1% -6% of age resister;
1% -8% of a pH value regulator;
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent;
the film forming agent is a mixture of a first film forming agent and a second film forming agent;
the first film forming agent is bisphenol A type epoxy resin with the molecular weight of 2800-;
the second film forming agent is bisphenol F type epoxy resin with the molecular weight of 250-400;
the toughening agent is epoxy and polyether modified copolymer.
2. The glass fiber sizing agent according to claim 1, wherein the mass percentage of each component in the solid component to the total mass of the sizing agent solid is expressed as follows:
6% -23% of a silane coupling agent;
55% -78% of a film forming agent;
2% -5% of a toughening agent;
5% -17% of a lubricant;
1% -4% of a wetting agent;
1% -5% of a surfactant;
1% -5% of age resister;
1% -7% of a pH value regulator;
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent.
3. The glass fiber sizing agent according to claim 1, wherein the mass ratio of the epoxy silane coupling agent to the amide silane coupling agent is 1:1 to 1: 2.
4. The glass fiber sizing agent according to claim 1, wherein the mass ratio of the first film forming agent to the second film forming agent is 2:1 to 3: 1.
5. A glass fiber size according to claim 1, wherein,
the lubricant is PEG lubricant;
the wetting agent is selected from acetylene glycol wetting agents;
the surfactant is selected from fatty amide surfactants;
the anti-aging agent is sulfite;
the pH value regulator is acid.
6. The glass fiber sizing agent according to claim 1, wherein the mass percentage of each component in the solid component to the total mass of the solid component is represented as follows:
11% -15% of a silane coupling agent;
56% -70% of film forming agent;
2% -3% of a toughening agent;
7% -11% of a lubricant;
2% -3% of a wetting agent;
2% -4% of a surfactant;
2% -3% of age resisters;
2% -5% of a pH value regulator;
wherein the silane coupling agent is a mixture of an epoxy silane coupling agent and an amido silane coupling agent;
the film forming agent is a mixture of a first film forming agent and a second film forming agent, wherein the first film forming agent is bisphenol A type epoxy resin with the molecular weight of 2800-3500, and the second film forming agent is bisphenol F type epoxy resin with the molecular weight of 250-400;
the toughening agent is epoxy and polyether modified copolymer;
the lubricant is PEG lubricant;
the wetting agent is selected from acetylene glycol wetting agents;
the surfactant is selected from fatty amide surfactants;
the anti-aging agent is sulfite;
the pH value regulator is acid.
7. A method for preparing a glass fiber sizing agent according to any one of claims 1 to 6, characterized by comprising the following steps:
(1) adding water accounting for 30-50% of the total mass of the impregnating compound into a container, sequentially adding a pH value regulator and a silane coupling agent, and stirring until the solution is clear;
(2) diluting the film forming agent with a small amount of water and adding the diluted film forming agent into the container;
(3) diluting the toughening agent by using 50wt% of ethanol water solution, and adding the solution into the container;
(4) diluting the lubricant with water and adding the diluted lubricant into the container;
(5) diluting the wetting agent with water and adding the diluted wetting agent into the container;
(6) diluting the surfactant with water and adding the diluted surfactant into a container;
(7) diluting the anti-aging agent with water and adding the anti-aging agent into the container;
(8) and (4) supplementing the balance of water into the container, and uniformly stirring to obtain the product.
8. A glass fiber produced by coating the glass fiber sizing agent defined in any one of claims 1 to 6.
9. Use of the glass fiber sizing agent as defined in any one of claims 1 to 6 in the preparation of yarns for epoxy-based composite materials.
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| CN113605097A (en) * | 2021-08-24 | 2021-11-05 | 德宏电子(苏州)有限公司 | Secondary sizing slurry for electronic glass fiber cloth and preparation method thereof |
| CN114853365B (en) * | 2022-04-20 | 2023-09-01 | 巨石集团有限公司 | Glass fiber impregnating compound, preparation method thereof, glass fiber product and application |
| CN117185677B (en) * | 2023-08-10 | 2024-11-22 | 四川文理学院 | A toughening impregnation agent and its preparation method and application |
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