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CN-118255533-B - Glass fiber impregnating compound and preparation method, product and application thereof

CN118255533BCN 118255533 BCN118255533 BCN 118255533BCN-118255533-B

Abstract

The application provides a glass fiber sizing agent which comprises the following effective components and water, wherein the solid content of the sizing agent is 6.0% -15.0%, the effective components comprise a silane coupling agent, a film forming agent, a lubricant and an anti-hydrolysis agent, the solid mass of each effective component of the sizing agent accounts for the total solid mass of the sizing agent, the weight percentage of the solid mass of each effective component of the sizing agent is represented by 5.0% -15.0%, the weight percentage of the film forming agent is 55.0% -80.0%, the weight percentage of the lubricant is 4.0% -12.0%, the weight percentage of the anti-hydrolysis agent is 10.0% -20.0%, the film forming agent is epoxy emulsion and polyurethane emulsion, the silane coupling agent is amino silane coupling agent and epoxy silane coupling agent, the lubricant is silicone oil type lubricant, and the anti-hydrolysis agent is epoxy compound hydrolysis stabilizer. The glass fiber chopped strands produced by coating the sizing agent have good bundling property and good compatibility with polybutylene terephthalate resin, and the prepared polybutylene terephthalate resin composite material has excellent mechanical property and wet heat aging resistance.

Inventors

  • LU JIANMING
  • CAO GUORONG
  • FAN JIASHU
  • WANG KUN
  • HUANG JIAN
  • YE FENGLIN

Assignees

  • 巨石集团有限公司

Dates

Publication Date
20260508
Application Date
20240320

Claims (10)

  1. 1. The glass fiber impregnating compound is characterized by comprising an effective component and water, wherein the solid content of the impregnating compound is 6.0% -15.0%, the effective component comprises a silane coupling agent, a film forming agent, a lubricant and an anti-hydrolysis agent, and the solid mass of each effective component of the impregnating compound is expressed as follows: Silane coupling agent 5.0-15.0% 55.0 To 80.0 percent of film forming agent 4.0-12.0% Of lubricant 10.0% -20.0% Of hydrolysis resistance agent; The film forming agent is an epoxy emulsion and a polyurethane emulsion, wherein the solid mass ratio C2 of the epoxy emulsion to the polyurethane emulsion is 2:3-2.5:1, the silane coupling agent is an amino silane coupling agent and an epoxy silane coupling agent, the lubricant is a silicone oil lubricant, and the anti-hydrolysis agent is an epoxy compound hydrolysis stabilizer; The epoxy emulsion is bisphenol S-type epoxy emulsion and/or fluorinated epoxy emulsion, and the polyurethane emulsion is polyether polyurethane emulsion and/or polyolefin polyurethane emulsion.
  2. 2. The glass fiber sizing agent according to claim 1, wherein the solid content of the sizing agent is 7.0% -14.0%, and the percentage of the solid mass of each effective component of the sizing agent to the total solid mass of the sizing agent is as follows: 6.0 to 13.0 percent of silane coupling agent 60.0 To 70.0 percent of film forming agent 5.0-10.0% Of lubricant 12.0% -19.0% Of an anti-hydrolysis agent; the film forming agent is epoxy emulsion and polyurethane emulsion, the silane coupling agent is amino silane coupling agent and epoxy silane coupling agent, the lubricant is silicone oil lubricant, and the hydrolysis resisting agent is epoxy compound hydrolysis stabilizing agent.
  3. 3. The glass fiber sizing of claim 1 or 2, wherein the amino silane coupling agent comprises one or more of 3-aminopropyl trimethoxysilane, N-2- (aminoethyl) -3-aminopropyl methyldimethoxy silane; The epoxy silane coupling agent comprises one or two of 2- (3, 4-epoxycyclohexyl) ethyl trimethoxy silane and gamma-glycidyl ether propyl trimethoxy silane.
  4. 4. The glass fiber sizing of claim 1 or 2, wherein the lubricant is one or both of a phenethyl silicone oil lubricant and a phenolic methyl silicone oil lubricant.
  5. 5. The glass fiber sizing agent according to claim 1 or 2, wherein the hydrolysis inhibitor is a glycidyl ether type epoxy compound hydrolysis stabilizer.
  6. 6. The glass fiber sizing of claim 5, wherein the glycidyl ether epoxy hydrolysis stabilizer comprises one or more of phenyl glycidyl ether, triglycidyl isocyanate, bisphenol a diglycidyl ether, tetra (phenyl glycidyl ether group) ethane, trimethoxy [3- (glycidyl ether group) propyl ] silane.
  7. 7. The glass fiber sizing agent according to claim 1 or 2, wherein the mass ratio C1 of the amino silane coupling agent to the epoxy silane coupling agent is 2:3 to 4:1.
  8. 8. A method for preparing the glass fiber sizing agent according to any one of claims 1 to 7, comprising the steps of: the hydrolysis of the silane coupling agent, namely adding the silane coupling agent into water, hydrolyzing the silane coupling agent, and stirring until the solution is clear to obtain a silane coupling agent solution; Diluting the film forming agent, the lubricant and the hydrolysis resisting agent by water respectively; And adding the diluted film forming agent, lubricant and hydrolysis resistance agent into the silane coupling agent solution, supplementing the balance of water, and uniformly stirring to obtain the glass fiber sizing agent.
  9. 9. A glass fiber product produced by coating the glass fiber sizing of any of claims 1-7.
  10. 10. Use of the glass fiber product according to claim 9 for reinforcing polybutylene terephthalate resin composite.

Description

Glass fiber impregnating compound and preparation method, product and application thereof Technical Field The application relates to the technical field of glass fiber sizing agents, in particular to a glass fiber sizing agent, and a preparation method, a product and application thereof. Background In recent years, with the high-speed development of photovoltaic and solar industries, glass fiber reinforced polybutylene terephthalate (polybutylene terephthalate, abbreviated as PBT) composite materials are increasingly applied to photovoltaic module materials, such as back protection packaging materials for improving the ageing resistance and corrosion resistance of photovoltaic modules, so that the service life of the photovoltaic modules is prolonged, light entering the photovoltaic modules is scattered through a white back plate, and the light absorption efficiency of the photovoltaic modules is improved. In addition, if the material is used as a substitute aluminum frame material, the glass edge can be protected, the sealing performance of the photovoltaic module is enhanced, the integral mechanical strength of the photovoltaic module is improved, and the installation and the transportation of the photovoltaic module are facilitated. The photovoltaic module is applied to the open field with open areas and severe environments, is subjected to the influence of high and low temperature, wind, rain and strong sunlight all the year round, has high ageing speed, evaluates ageing performance and has important significance on the safe operation of the photovoltaic system. Therefore, thermoplastic enterprises at home and abroad have made more and more researches on the application of PBT composite materials to the photovoltaic industry. How to keep good mechanical properties for a long time in long-term heat irradiation or severe natural environment becomes one of the difficulties and hot spots of the research of various large composite material enterprises. The conventional glass fiber reinforced PBT composite material is easy to decompose when meeting water at high temperature, has a great relationship with resin characteristics, and the PBT resin has more ester bonds and is easy to degrade when meeting water. From the viewpoint of glass fiber materials, the glass fiber materials are excellent in aging resistance and can be maintained for a long period of time in a hot and humid environment. At the same time, the surface of the glass fiber is usually coated with a layer of chemical mixture (known in the industry as impregnating agent), ensuring smooth production and excellent service performance, and improving interface bonding with the matrix resin. Therefore, developing a corresponding sizing agent to improve the compatibility of glass fibers and PBT resins and improve the wet heat aging resistance of the composite material is of great importance. Therefore, there is a need to develop a new sizing agent to improve the properties of glass fiber reinforced PBT composites. Disclosure of Invention The application aims to provide a glass fiber sizing agent, in particular to a glass fiber sizing agent, a preparation method, a product and application thereof, and glass fiber chopped strands produced by coating with the sizing agent have good bundling property, few broken filaments in the production process, good compatibility with polybutylene terephthalate resin, and uniform dispersion in polybutylene terephthalate resin, so that the prepared polybutylene terephthalate resin composite material has excellent mechanical property and damp-heat aging resistance. According to the first aspect of the application, a glass fiber sizing agent is provided, the sizing agent comprises an effective component and water, the solid content of the sizing agent is 6.0% -15.0%, the effective component comprises a silane coupling agent, a film forming agent, a lubricant and an anti-hydrolysis agent, and the solid mass of each effective component of the sizing agent is expressed as the following in percentage by total solid mass of the sizing agent: the film forming agent is epoxy emulsion and polyurethane emulsion, the silane coupling agent is amino silane coupling agent and epoxy silane coupling agent, the lubricant is silicone oil lubricant, and the hydrolysis resisting agent is epoxy compound hydrolysis stabilizing agent. Preferably, the solid content of the impregnating compound is 7.0% -14.0%, and the solid mass of each effective component of the impregnating compound is expressed as follows: the film forming agent is epoxy emulsion and polyurethane emulsion, the silane coupling agent is amino silane coupling agent and epoxy silane coupling agent, the lubricant is silicone oil lubricant, and the hydrolysis resisting agent is epoxy compound hydrolysis stabilizing agent. Preferably, the amino silane coupling agent comprises one or more of 3-aminopropyl trimethoxysilane, N-2- (aminoethyl) -3-aminopropyl trimethoxysilane and N-2- (ami