CN110922069A - Glass fiber impregnating compound for wet weaving and puffing, and preparation method, product and application thereof - Google Patents
Glass fiber impregnating compound for wet weaving and puffing, and preparation method, product and application thereof Download PDFInfo
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- CN110922069A CN110922069A CN201911167315.4A CN201911167315A CN110922069A CN 110922069 A CN110922069 A CN 110922069A CN 201911167315 A CN201911167315 A CN 201911167315A CN 110922069 A CN110922069 A CN 110922069A
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- 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
- C03C25/465—Coatings containing composite materials
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- 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
- C03C25/323—Polyesters, e.g. alkyd resins
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- 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
-
- 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
Abstract
The invention discloses a glass fiber impregnating compound for wet weaving and puffing, wherein the solid mass of the impregnating compound accounts for 4-11% of the total mass of the impregnating compound, and the balance is water; the solid mass of each component in the impregnating compound accounts for the following percentage of the solid mass of the impregnating compound: 4-12% of a coupling agent; 3-10% of a surfactant; 8-20% of a lubricant; 55-75% of a film forming agent; 0.2-1% of a mildew inhibitor; 3-8% of a pH value regulator; wherein the film forming agent is one or the mixture of two of water-soluble unsaturated polyester resin and water-soluble epoxy resin; and when the film forming agent is a mixture of water-soluble unsaturated polyester resin and water-soluble epoxy resin, the weight ratio of the water-soluble unsaturated polyester resin to the water-soluble epoxy resin is 1: 2-1: 0.3. the glass fiber yarn produced by the impregnating compound has good monofilament dispersibility and smooth use, less hairiness and good weaving and bulking effects, and can meet the requirements of various indexes of mesh cloth and sealing heat-insulating materials.
Description
Technical Field
The invention relates to the technical field of glass fiber reinforced thermal protection, in particular to a glass fiber impregnating compound for wet weaving and puffing, and a preparation method, a product and application thereof.
Background
Glass fiber is an inorganic non-metallic material with excellent performance, has various types, is generally used as a reinforcing material in composite materials, and is widely applied to various fields of national economy such as building engineering, petrochemical industry, transportation, energy industry, wind power, thermal protection, mechanical manufacturing, boats, sports equipment, aerospace, thermal protection and the like. Among them, the application of glass fiber in the field of thermal protection is mainly embodied in external wall insulation systems and sealing and heat insulating materials.
The glass fiber mesh cloth plays an important structural role in an external wall heat insulation system, and is formed by treating an alkali-resistant coating on the basis of glass fiber fabric; the heat-insulating layer has excellent acid, alkali and other chemical substance corrosion resistance and high warp and weft tensile strength, so that the stress borne by the heat-insulating system of the outer wall can be uniformly dispersed, the deformation of the whole heat-insulating structure caused by collision and extrusion of external impact can be avoided, the heat-insulating layer has high impact strength, the construction and quality control are easy, the safety, reliability and energy-saving effect are obvious and lasting, the surface seepage-proofing and crack-resisting effect is good, the environment protection is facilitated, the veneer making method is diversified, and the function of 'soft steel bars' is realized in the heat-insulating system.
The glass fiber bulked yarn plays an incomparable role in the field of thermal protection as a porous sealing heat-insulating material due to the properties of wear resistance, high strength, uniform surface structure, good luster, fluffiness and the like. The deformation process of the glass fiber bulked yarn is to separate, slide, bend and wind the filaments with the contracted length of the filament bundle by utilizing the kinetic energy conversion principle of the air flow fluidics, and generate a large number of filament loops to finally form a bulked state. The glass fiber bulked yarns are insulated by utilizing the low thermal conductivity of air or inert gas in the pores contained in the material. Therefore, the glass fiber bulked yarn is widely applied to reinforcing materials with high requirements on personal safety protection and mechanical performance, such as soft connection of a generator set, a boiler and a chimney, heat insulation of an engine compartment, a fireproof curtain and the like; meanwhile, the method is widely applied to the pipeline compensation of chemical and environmental protection systems such as exhaust, ventilation, smoke dust and waste gas treatment, and the like, and the fields of various coating base fabrics, boiler heat preservation, pipeline wrapping and the like.
Most common glass fiber products in the market are dried yarns with the water content of less than or equal to 0.10 percent, and can meet the corresponding performance requirements on smoothness in use, resin compatibility and the like in the aspects of producing winding pressure containers, weaving wind power base materials, pultrusion building profiles and the like. However, in the field of sealing heat-insulating materials and alkali-resistant mesh fabrics, in order to achieve good coating uniformity of alkali-resistant coating of the mesh fabric and good swelling effect of the sealing heat-insulating materials and meet product design indexes, the production process is to weave or swell glass fibers which are not dried to form films, and the water content of glass fiber yarns is generally required to be controlled to be less than or equal to 8%, so that the yarns of the glass fibers in a wet base state are required to have good bundling property, good wear resistance, softness and easy dispersion. Therefore, the requirements on the quality and the stability of the glass fiber product are extremely high. The related technical requirements are as follows (taking 800tex as an example):
performance indexes are as follows:
| test items | Unit of | Test standard | Index requirement |
| Water content ratio | ％ | GB/T 9914.1-2013 | ≤8 |
| Feather of feather | mg/kg | / | ≤50 |
| Expansion ratio | ％ | / | ≥5 |
The prior art can not meet the index requirements at present, and the development of the technology is restricted to a certain extent. Therefore, in order to meet the performance requirements of the sealing and heat insulating material, a novel impregnating compound needs to be developed, so that a glass fiber product coated and produced by the impregnating compound has good monofilament dispersibility and use smoothness, can achieve ideal weaving and bulking effects, and meets the index requirements of the mesh cloth and the sealing and heat insulating material.
Disclosure of Invention
The invention aims to provide the glass fiber impregnating compound for wet weaving and bulking, the glass fiber yarns produced by the impregnating compound have good monofilament dispersibility and use smoothness, less hairiness and good weaving and bulking effects, and can meet the index requirements of mesh cloth and sealing heat-insulating materials.
According to one aspect of the invention, the glass fiber impregnating compound for wet weaving and puffing is provided, wherein the solid mass of the impregnating compound accounts for 4-11% of the total mass of the impregnating compound, and the balance is water; the impregnating compound comprises the following components, and the solid mass of each component accounts for the solid mass of the impregnating compound, and the percentage of the solid mass of each component is as follows:
wherein the film forming agent is one or the mixture of two of water-soluble unsaturated polyester resin and water-soluble epoxy resin; and when the film forming agent is a mixture of water-soluble unsaturated polyester resin and water-soluble epoxy resin, the weight ratio of the water-soluble unsaturated polyester resin to the water-soluble epoxy resin is 1: 2-1: 0.3.
wherein the solid mass of each component accounts for the solid mass of the impregnating compound, and the percentage of the solid mass of each component is as follows:
wherein the molecular weight of the film forming agent is 150-700.
Wherein the lubricant is selected from one of polyethylene glycol type, polyalcohol type, hydrogenated vegetable oil, quaternary ammonium salt, amine salt and imidazoline type lubricant.
Wherein the surfactant is nonionic surfactant, and is selected from polyoxyethylene ether, polyalcohol, alkanolamide, amine oxide, microcrystalline wax emulsion, and chemically modified mineral oil emulsion.
Wherein the coupling agent is one or the combination of more of silane-based coupling agents with epoxy groups, acryloxy groups, vinyl groups or amino groups.
Wherein the mildew preventive is one or a mixture of two of sorbic acid, benzoic acid, acetic acid and fumaric acid.
The components of the impregnating compound comprise a coupling agent, a lubricant, a film-forming agent, a mildew inhibitor, a pH value regulator and deionized water; wherein the solid mass of the impregnating compound accounts for 4-11% of the total mass of the impregnating compound.
In the invention, the film forming agent as the main component of the sizing agent can protect the fiber and meet the continuous production of the fiber, and the film forming agent plays a decisive role in the flexibility of the glass fiber and the mechanical strength of a final product. Therefore, the choice of film former is a focus of the present invention. The content of the film forming agent is 55-75%, preferably 58-72%, more preferably 60-70%, one or two of water-soluble unsaturated polyester resin and water-soluble epoxy resin can be selected for mixing, and when the film forming agent is the mixture of the water-soluble unsaturated polyester resin and the water-soluble epoxy resin, the weight ratio of the water-soluble unsaturated polyester resin to the water-soluble epoxy resin is 1: 2-1: 0.3, preferably, the weight ratio of the water-soluble unsaturated polyester resin to the water-soluble epoxy resin is 1: 1.8:1: 0.5.
furthermore, the low-molecular-weight water-soluble film forming agent is adopted, and the molecular weight of the film forming agent is 150-700, preferably 200-600. The processing technology of the glass fiber for the mesh cloth is a wet weaving technology, the processing technology of the glass fiber for the sealing heat-insulating material is a wet puffing technology, and the requirements on the convergence, the monofilament dispersibility and the wear resistance of the glass fiber in a wet state are extremely high; researches show that compared with an emulsion-shaped film forming agent, the low-molecular-weight water-soluble film forming agent has stronger adhesive force on the surface of the fiber and better ductility, and can form an effective and continuous protective layer on the surface of the glass fiber, so that the glass fiber simultaneously meets the requirements of good bundling property, soft yarn, less hairiness, convenience for weaving, easiness in bulking and wet weaving and bulking processes in a wet base state. The water-soluble unsaturated polyester resin and the water-soluble epoxy resin in the present invention can be prepared by themselves according to the existing literature or commercially available products can be used.
The use of the lubricant can increase the wetting and sliding effect of the glass fiber drawing process and the post-processing process, enhance the wear resistance, reduce the surface damage of the glass fiber and the generation of hairiness in the use process, and play a decisive role in the smoothness of the post-processing such as wet weaving and puffing of the glass fiber and the use process. Therefore, the choice of lubricant is another focus of the present invention. Researches find that the lubricant is used too little, the wear resistance of the yarn cannot meet the use requirement, and more hairiness is generated in the use process, so that the product quality and the production efficiency are influenced; too much lubricant affects the bundling of the glass fiber strands and the mechanical properties of the final glass fiber reinforced plastic article. Therefore, in the present invention, the content of the lubricant is 8 to 20%, preferably 9 to 19%, and more preferably 10 to 19%. Further, the lubricant is selected from one of polyethylene glycol type, polyalcohol type, hydrogenated vegetable oil, quaternary ammonium salt, amine salt and imidazoline type lubricant.
The impregnating compound also comprises a surfactant, and particularly can be a nonionic surfactant. The nonionic surfactant is a surfactant which does not generate ions in an aqueous solution, and is dissolved in water because the nonionic surfactant has a functional group with strong affinity to water, and has good wettability and dispersibility. By applying the nonionic surfactant, on one hand, the surface tension of the impregnating compound can be reduced, other components are prevented from generating ion polymerization to generate precipitation, meanwhile, the wettability of the impregnating compound on the surface of the glass fiber can be increased, the coating effect is improved, and meanwhile, the easy dispersibility of the impregnating compound is beneficial to improving the expansion effect of the subsequent glass fiber for the sealing and heat insulating material. Therefore, the choice of surfactant is also a focus of the present invention. In the present invention, the nonionic surfactant used may be one selected from among polyoxyethylene ethers, polyhydric alcohols, alkanolamides, amine oxides, microcrystalline wax emulsions, and chemically modified mineral oil emulsions. The content of the nonionic surfactant is 3 to 10%, preferably 4 to 9%, and more preferably 5 to 9%.
The silane coupling agent is an organosilicon compound containing two groups with different chemical properties in a molecule, and the classical product of the organosilicon compound can be represented by a general formula YSiX3And (4) showing. Wherein Y is a non-hydrolyzable group including an alkenyl group (mainly vinyl group), and a terminal group having Cl, NH2SH, epoxy, N3A hydrocarbon group having a functional group such as a (meth) acryloyloxy group or an isocyanate group, i.e., a carbon functional group; x is a hydrolyzable group, including Cl, OMe, OC2H4OCH3，OSiMe3And OAc, etc. Due to this special structure, the molecule has both a reactive group capable of chemically bonding to inorganic materials (such as glass, silica sand, metal, etc.) and a reactive group capable of chemically bonding to organic materials (such as film-forming agents, etc.). In the forming process of the glass fiber, the temperature needs to be instantly reduced from about 1500 ℃ to dozens of ℃ so that microcracks can be generated on the surface of the glass fiber, and certain influence is generated on the strength and the wear resistance of the fiber; the active group in the coupling agent can be coupled with the surface of the glass fiber and repair microcracks, and can react with the film-forming agent to form a protective layer on the surface of the glass fiber, so that the strength and the wear resistance of the glass fiber are ensured, and the coupling agent is the key for influencing the strength and the wear resistance of the glass fiber. Therefore, the choice of coupling agent is a further focus of the present invention.
Coupling agents suitable for use in the present invention are silane-based coupling agents with epoxy, acryloxy, vinyl or amino groups in combination with one or more of these. Preferably, the coupling agent of the present invention is one or a combination of two of silane coupling agents with vinyl, acryloxy or amino groups, and the coupling agent of the present invention can be selected from gamma-methacryloxypropyltrimethoxysilane by way of example. The content of the coupling agent in the invention is 4-12%, preferably 5-10%, and more preferably 6-9%.
The inventor finds that the combination of the selected film-forming agent, the surfactant, the lubricant and the coupling agent is obviously superior to the combination of other film-forming agents, surfactants, lubricants and coupling agents in the aspects of wear resistance, easy dispersibility and expansion rate of yarns in a wet base state; under the condition of proper content proportion, the glass fiber has good bundling property in a wet base state, the yarn is soft and easy to disperse, and the bulking effect can be obviously improved.
The mildew preventive is one or the mixture of two of organic acids which are slightly soluble or easily soluble in water, such as sorbic acid, benzoic acid, acetic acid, fumaric acid and the like. Because the water content of the product is different from that of other types of glass fibers (the water content is less than or equal to 0.1 percent), the product produced by coating the impregnating compound can be in a high-water-content state with the water content of less than or equal to 8 percent for a long time, and the product is easy to mildew after being stored in a high-temperature and high-humidity environment for a long time under the condition of not carrying out mildew-proof treatment. The mildew inhibitor can inhibit the activity of enzyme, interfere the survival and propagation of microbe and avoid mildew effectively by means of interfering the enzyme system of microbe, coagulating and denaturing the protein of microbe, altering the permeability of cell plasma membrane, etc. The content of the mildew preventive in the invention is 0.2-1%, preferably 0.2-0.8%, and more preferably 0.3-0.7%.
The pH value regulator of the invention adopts acid, and can be organic acid or inorganic acid which is easy to dissolve in water, such as citric acid, glacial acetic acid, formic acid and the like. The pH value regulator is mainly used for assisting the dispersion of the coupling agent and regulating the pH value of the prepared impregnating compound, so that the impregnating compound is ensured to be more stable on one hand, and the mildew preventive can effectively play a mildew preventive role on the other hand. The content of the pH value regulator is 3-8%, preferably 4-7.5%, and further preferably 5-7%; as an example, glacial acetic acid can be used as the pH regulator.
The pH value range of the impregnating compound prepared by the invention is 3-6.5, and preferably, the pH value range is 4-6.
According to another aspect of the present invention, there is provided a method for preparing the glass fiber sizing agent for wet weaving and bulking, comprising the steps of:
1S: adding water into a container, then adding a pH value regulator, stirring for 3-5 minutes, slowly adding a coupling agent, and stirring for 20-30 minutes until the coupling agent is uniformly dispersed;
the slow addition of the coupling agent is helpful for the uniform dispersion of the coupling agent, and meanwhile, the coupling agent is prevented from splashing when being added rapidly, and the coupling agent is continuously added at the speed of 100-200 g/s generally;
2S: dissolving a surfactant in water, stirring and diluting, and adding into a container;
3S: dissolving a lubricant in water, stirring and diluting the solution, and adding the solution into a container;
4S: diluting the film forming agent with water, fully and uniformly stirring, and adding the diluted film forming agent into a container;
5S: fully dissolving the mildew preventive in water, and adding the mildew preventive into the container;
6S: and (3) adding water for supplementing the balance into the container, and uniformly stirring.
Wherein, water accounting for 40 to 50 percent of the total amount of the impregnating compound is preferably added in the step 1S;
wherein, in the steps 2S and 3S, the surfactant and the lubricant are dissolved by water with the temperature of 40-50 ℃ and the dosage of which is preferably 5-10 times that of the surfactant and the lubricant;
wherein, in the step 4S, water with the dosage of 1.5-2 times of that of the film forming agent is preferably selected to dilute the film forming agent;
in the step 5S, water with the mildew preventive amount being 5-10 times of that of the mildew preventive is preferably selected for dissolving the mildew preventive.
According to a third aspect of the present invention, there is provided a glass fiber product produced by coating the wet-laid, bulked glass fiber sizing material described above.
According to a fourth aspect of the present invention, there is provided the use of the wet-laid glass fiber sizing for bulking and weaving in a scrim or a sealed thermal insulation material.
The impregnating compound of the formula adopts the silane coupling agent, the water-soluble film-forming agent, the surfactant, the lubricant and the mildew preventive to be matched for use, so that a glass fiber product coated and produced by the impregnating compound has good monofilament dispersibility and smoothness in use, less hairiness and good weaving and bulking effects, and meets the index requirements of mesh cloth and/or a sealing heat-insulating material.
Detailed Description
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 specific embodiments of the present invention, and it is obvious that the described embodiments are some but not all 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 impregnating compound for wet weaving and puffing comprises 4-11% of solid by mass and the balance of water; the impregnating compound comprises the following components, and the solid mass of each component accounts for the solid mass of the impregnating compound and is expressed as follows: 4-12% of a coupling agent; 3-10% of a surfactant; 8-20% of a lubricant; 55-75% of a film forming agent; 0.2-1% of a mildew inhibitor; 3-8% of a pH value regulator; wherein the film forming agent is one or the mixture of two of water-soluble unsaturated polyester resin and water-soluble epoxy resin; when the film forming agent is a mixture of water-soluble unsaturated polyester resin and water-soluble epoxy resin, the weight ratio of the water-soluble unsaturated polyester resin to the water-soluble epoxy resin is 1: 2-1: 0.3.
preferably, the solid mass of each component accounts for the solid mass of the impregnating compound, and the percentage of the solid mass of each component to the solid mass of the impregnating compound is as follows: 5-10% of a coupling agent; 4-9% of a surfactant; 9-19% of a lubricant; 58-72% of a film forming agent; 0.2-0.8% of mildew preventive; and 4-7.5% of a pH value regulator.
Wherein the molecular weight of the film forming agent is 150-700.
Wherein the selected surfactant is nonionic surfactant, and can be selected from polyoxyethylene ether, polyalcohol, alkanolamide, amine oxide, microcrystalline wax emulsion, and chemically modified mineral oil emulsion.
Wherein the lubricant is one of polyethylene glycol type, polyalcohol type, hydrogenated vegetable oil, quaternary ammonium salt, amine salt, and imidazoline type lubricant.
The coupling agent is one or more of silane-based coupling agents with epoxy group, acryloxy group, vinyl group or amino group.
The mildew preventive is one or a mixture of two of sorbic acid, benzoic acid, acetic acid and fumaric acid.
The preparation method of the glass fiber impregnating compound for wet weaving and bulking comprises the following steps:
1S: adding water accounting for 40-50% of the total amount of the impregnating compound into a container, then adding a pH value regulator, stirring for 3-5 minutes, and then adding a coupling agent; stirring for 20-30 minutes until the coupling agent is uniformly dispersed, the water solution is clear, and the surface of the water solution has no oil droplets;
2S: dissolving a surfactant in 5-10 times of water with the temperature of 40-50 ℃, stirring and diluting, and adding into a container;
3S: dissolving a lubricant in 5-10 times of water with the temperature of 40-50 ℃, stirring and diluting, and adding into a container;
4S: diluting a film forming agent with 1.5-2 times of water, uniformly stirring, and adding into a container;
5S: dissolving a mildew preventive in 5-10 times of water, and adding the mildew preventive into a container;
6S: and (4) adding water for supplementing the balance into the container, and uniformly stirring.
Some specific examples of the wet-laid, bulked glass fiber sizing of the present application are set forth below.
Examples
The impregnating compound used in the embodiment of the invention comprises the following components:
coupling agent: gamma-methacryloxypropyltrimethoxysilane with the product brand of A-174;
surfactant (b): polyoxyethylene ether-OP;
lubricant: PEG 600;
film-forming agent: water-soluble epoxy resin, product number SM662, Jiangsu Sanmu group;
water-soluble unsaturated polyester resin, SR-1, Yingkou Star flame chemical Co., Ltd;
mildew preventive: sorbic acid;
pH value regulator: glacial acetic acid.
It should be noted that the specific types and contents of the above selected components do not limit the protection scope of the present application.
Table 1 shows some examples of wet-laid, bulked glass fiber sizes according to the present invention.
TABLE 1 wetting agent part detailed example List
It should be noted that the combustible content (i.e. the amount of the impregnating compound coated on the glass fiber accounts for the mass of the glass fiber) in table 1 is generally controlled to be 0.3-1.2%, the specific value needs to be according to the performance of the raw material itself, and from the performance index and the experimental test result that the product needs to reach, the hairiness performance and the puffing effect of the product produced with the combustible content of 0.3-0.7% can meet the requirements.
Comparative example:
comparative example 1:
coupling agent: gamma-aminopropyl triethoxy silane with product trade mark of A-1100, 3%;
surfactant (b): imidazoline ester quaternary ammonium salt, 5%;
lubricant: 9% of silicone oil;
film-forming agent: water-soluble epoxy resin, product number SM662, Jiangsu Sanmu group, 77%;
mildew preventive: sorbic acid, 0.5%;
pH value regulator: glacial acetic acid, 5.5%.
Comparative example 2:
coupling agent: gamma-methacryloxypropyltrimethoxysilane with the product brand of A-174, 7%;
lubricant: imidazoline ester quaternary ammonium salt, 21%;
film-forming agent: bisphenol A epoxy resin emulsion, product trade name Neoxil 965 (manufacturer: Dutch DSM company), 63.6%;
mildew preventive: sorbic acid, 0.4%;
pH value regulator: glacial acetic acid, 5.5%.
Experimental test example
The following are the specific test results of 800tex direct strand produced using a certain glass fiber production process using the sizing produced according to the example formulation data in table 1.
TABLE 2 results of testing the properties of various glass fibers
The method for testing the expansion rate comprises the following steps: and (3) taking un-bulked yarns and bulked yarns with the same length, drying, and weighing the yarns as A and B respectively, wherein the bulking rate is B/A-100%.
From the formula test examples, the components and the component contents are designed, so that the impregnating compound meeting the requirements can be obtained, and all the performances are superior to those of comparative example data; the effects of examples 3, 4 and 8 are particularly preferred.
In conclusion, the glass fiber produced by the glass fiber impregnating compound for wet weaving and bulking has good monofilament dispersibility and use smoothness, less hairiness and good bulking effect, and meets the index requirements of mesh cloth and/or sealing heat-insulating materials.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
Finally, it should be noted that: 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 (10)
1. The glass fiber impregnating compound for wet weaving and puffing is characterized in that the solid mass of the impregnating compound accounts for 4-11% of the total mass of the impregnating compound, and the balance is water; the impregnating compound comprises the following components, and the solid mass of each component accounts for the solid mass of the impregnating compound, and the percentage of the solid mass of each component is as follows:
wherein the film forming agent is one or the mixture of two of water-soluble unsaturated polyester resin and water-soluble epoxy resin; and when the film forming agent is a mixture of water-soluble unsaturated polyester resin and water-soluble epoxy resin, the weight ratio of the water-soluble unsaturated polyester resin to the water-soluble epoxy resin is 1: 2-1: 0.3.
2. the wet-laid, bulked glass fiber sizing agent of claim 1, wherein the solids mass of each component in the sizing agent is expressed as follows:
3. the glass fiber impregnating compound for wet weaving and bulking of claim 1, wherein the molecular weight of the film forming agent is 150 to 700.
4. The wet-laid, glass fiber sizing composition for sizing and bulking as claimed in claim 1 or 2, wherein said lubricant is selected from the group consisting of polyethylene glycol type, polyol type, hydrogenated vegetable oils, quaternary ammonium salts, amine salts, imidazoline type lubricants.
5. The wet-laid glass fiber sizing agent for wet weaving and bulking as claimed in claim 1 or 2, wherein the surfactant is a nonionic surfactant selected from one of polyoxyethylene ethers, polyhydric alcohols, alkanolamides, amine oxides, microcrystalline wax emulsions, and chemically modified mineral oil emulsions.
6. The wet-laid, bulked glass fiber sizing composition as claimed in claim 1, wherein said coupling agent is one or more combinations of silane-based coupling agents having epoxy, acryloxy, vinyl, or amino groups.
7. The wet-laid glass fiber sizing agent for weaving and bulking according to claim 1, wherein the mildewcide is one or a mixture of sorbic acid, benzoic acid, acetic acid and fumaric acid.
8. A method for preparing a wet-laid glass fiber sizing composition for bulking according to any of claims 1 to 7, comprising the steps of:
1S: adding water into a container, then adding a pH value regulator, stirring for 3-5 minutes, and then adding a coupling agent; continuously stirring until the coupling agent is uniformly dispersed, the aqueous solution is clear, and the surface of the aqueous solution has no oil droplets;
2S: dissolving a surfactant in water, stirring and diluting, and adding the solution into the container;
3S: dissolving a lubricant in water, stirring and diluting the solution, and adding the solution into the container;
4S: diluting the film forming agent with water, uniformly stirring, and adding into the container;
5S: dissolving the mildew preventive in water and then adding the mildew preventive into the container;
6S: and (3) adding water for supplementing the balance into the container, and uniformly stirring.
9. A glass fiber product produced by coating the wet-laid, bulked glass fiber sizing of any one of claims 1-7.
10. Use of a wet laid glass fibre sizing composition as claimed in any one of claims 1 to 7 in a mesh or sealed insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116477853A (en) * | 2023-04-17 | 2023-07-25 | 巨石集团有限公司 | Glass fiber surface treating agent, preparation method thereof, glass fiber and application thereof |
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| CN106630683A (en) * | 2016-12-07 | 2017-05-10 | 巨石集团有限公司 | Impregnating compound for alkali-free glass fiber rough yarn for strengthened PP or PBT |
| CN110482879A (en) * | 2019-08-20 | 2019-11-22 | 巨石集团有限公司 | A kind of extra-high voltage combined insulator glass fiber infiltration agent and preparation method, product and application |
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