Treatment agent for electronic-grade glass fiber cloth, preparation method of treatment agent, fiber cloth and application of fiber cloth

Abstract

The invention discloses a treating agent for electronic-grade glass fiber cloth, the treating agent for the electronic-grade glass fiber cloth is an aqueous solution, the treating agent comprises effective components and water, the effective components comprise a first silane coupling agent, a second silane coupling agent, a wetting agent, a pH value regulator and an organic solvent; the content of each component is expressed in percentage by mass as follows: 0.1%-3.5% of a first silane coupling agent, 0.05%-1.9% of a second silane coupling agent, 0.01%-0.8% of a wetting agent, 0.02%-2.7% of a pH value regulator, 0.5%-9.0% of an organic solvent and 86.0%-99.0% of water. The first silane coupling agent is an acrylamide type silane coupling agent; the second silane coupling agent is a long alkyl silane coupling agent containing carbon-carbon double bonds; and the wetting agent is a nonionic multi-branched chain alcohol wetting agent. The stability of the treating agent can be effectively improved, the wettability, the mechanical property, the heat resistance and the dielectric property of the electronic-grade glass fiber cloth are enhanced, and the treating agent is suitable for high-frequency and high-speed copper-clad plates and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electronic-grade glass fiber cloth treating agent, and particularly relates to an electronic-grade glass fiber cloth treating agent, a preparation method thereof, a fiber cloth and application. BACKGROUND

[0002] Glass fiber is a kind of inorganic non-metallic material with excellent performance and high insulation, which is widely used in aerospace, transportation, wind power and environmental protection, electronic devices, automobiles and ships, building insulation and other fields. Electronic-grade glass fiber cloth, as a reinforcing support material, has become one of the core basic materials of printed circuit board (PCB) and copper-clad plate (CCL) due to its high mechanical strength and high insulation, as well as excellent processability, stability and heat resistance.

[0003] After the electronic-grade glass fiber cloth is impregnated with the downstream copper-clad plate resin glue solution, a bonding sheet (PP sheet) is produced by heating and baking, a plurality of bonding sheets are stacked to form a required specification, a copper foil is coated thereon, and the copper-clad plate material is prepared by heating and solidifying again in a press. The treating agent coated on the surface of the glass fiber cloth serving as the "skeleton" in the copper-clad plate can be chemically bonded with active substances in the resin glue solution in the processes of glue impregnation and press bonding, so as to improve the heat resistance and insulation of the finished copper-clad plate.

[0004] The treating agent for electronic-grade glass fiber cloth is a treating liquid impregnated and coated on the surface of the glass fiber cloth after desizing in a surface treating machine, which is mainly used to improve the heat resistance, ion migration resistance (CAF resistance) and moisture resistance of the electronic-grade glass fiber cloth in the copper-clad plate. The silane coupling agent in the treating agent plays a "bridge" role, which is bonded with the surface of the glass fiber on one hand and chemically reacts with active functional groups in the downstream copper-clad plate resin on the other hand, so as to improve the interfacial bonding strength of the glass fiber and the resin. Therefore, the treating agent significantly affects the processability and use performance of the electronic-grade glass fiber cloth.

[0005] Chinese patent CN113914099A discloses an electronic-grade low-dielectric glass fiber cloth treating agent and a preparation method thereof. By compounding ethylene benzyl coupling agent and small-molecule vinyl silane coupling agent and using alcohol-based cosolvent, the problem of impregnation and air bubbles of the low-dielectric glass fiber cloth treating agent is solved, and the bonding performance and heat resistance with low-dielectric resin are improved. However, the vinyl silane coupling agent used in the patent has poor stability, and it is difficult to realize uniform and effective dispersion of the treating agent on the electronic-grade glass fiber cloth, which is not conducive to long-term production and use on site.

[0006] Chinese patent CN118374973A discloses an electronic grade glass fiber cloth surface treatment agent and a preparation method thereof. By using an amino silane coupling agent and a methacryloxy silane coupling agent and other components on the electronic grade glass fiber cloth, the problem of improving the dielectric constant and heat resistance is solved, higher mechanical strength and wettability are achieved, and the performance requirements of high-density and multi-layer printed circuit boards are met. However, the amino silane coupling agent selected in the patent contains an amino functional group, which has high molecular polarity and affects the electrical properties, which is not conducive to reducing dielectric loss, and is difficult to be used in polyphenyl ether and other high-speed resin systems. In addition, only pure water is used as the solvent in the treatment agent, the system is unstable, and the treatment agent can only be stored for a short period of time, and the service life of the treatment agent is short and needs to be replaced frequently.

[0007] The treatment agent in the above patent cannot meet the requirements of electronic grade glass fiber cloth in high-frequency high-speed copper clad plate design. Therefore, it is necessary to develop a treatment agent that can meet the matching problem of electronic grade glass fiber cloth prepared in copper clad plate, especially high-frequency high-speed copper clad plate. SUMMARY

[0008] The present application aims to solve the above technical problems, and provides a treatment agent for electronic grade glass fiber cloth and a preparation method thereof. The treatment agent has low polarity, meets the use requirements of high-frequency high-speed copper clad plate, and has excellent stability and dispersion uniformity. In addition, the treatment agent for electronic grade glass fiber cloth can also improve the wettability, mechanical properties and heat resistance of the glass fiber cloth.

[0009] In order to achieve the above technical effects, the present application realizes the following technical solutions:

[0010] According to one aspect of the present application, a treatment agent for electronic grade glass fiber cloth is provided, which is an aqueous solution and includes effective components and water, wherein the effective components include a first silane coupling agent, a second silane coupling agent, a wetting agent, a pH value adjusting agent and an organic solvent. The content of each component is expressed as follows in mass percentage:

[0011]

[0012] Preferably, the content of each component of the treatment agent for electronic grade glass fiber cloth is expressed as follows in mass percentage:

[0013]

[0014]

[0015] Preferably, the first silane coupling agent is an acrylamide silane coupling agent.

[0016] Preferably, the first silane coupling agent acrylamide silane coupling agent has a structural formula of CH2=CHR1CONH(CH2)nSi(OR2)3 n Si(OR2)3, wherein R1 is one of H, CH3; n is 1-3; R2 is one of H, CH3, CH2CH3.

[0017] Further preferably, the first silane coupling agent acrylamide silane coupling agent is one or a mixture of any of methacrylamidopropyl trimethoxysilane, acrylamidopropyl trimethoxysilane, methacrylamidopropyl triethoxysilane, methacrylamidopropyl trihydroxysilane.

[0018] The acrylamide silane coupling agent contains an unsaturated carbon-carbon double bond, which can cross-link with the PPO resin, hydrocarbon resin, and other resins in the high-frequency high-speed copper-clad plate. In addition, the molecular structure contains an amide group, which can improve the water solubility and uniform dispersibility of the silane coupling agent. The content of the first silane coupling agent needs to be kept within an appropriate range. If the amount is too low, it will result in a low degree of reaction with the resin, and the interface between the electronic-grade glass fiber cloth and the resin will have weak bonding force. However, if the amount is too high, it will result in an increase in self-polymerization between silanes, poor storage stability, and further increase in manufacturing cost. The application controls the amount of the first silane coupling agent to be 0.1-3.5%, preferably 0.25-2.1%.

[0019] Preferably, the second silane coupling agent is a long alkyl silane coupling agent containing a carbon-carbon double bond.

[0020] Preferably, the long alkyl silane coupling agent containing a carbon-carbon double bond is one or a mixture of any of 7-octenyl trimethoxysilane, 5-hexenyl trimethoxysilane, docosenyl triethoxysilane.

[0021] The use of a long alkyl silane coupling agent containing a carbon-carbon double bond is beneficial to the reduction of dielectric constant and dielectric loss, which is suitable for high-frequency high-speed copper-clad plates with requirements for dielectric properties. In addition, the molecular structure contains a carbon-carbon double bond functional group, which can undergo an addition reaction with the PPO resin in the copper-clad plate, improving the performance of the copper-clad plate. The addition amount of the second silane coupling agent needs to be controlled within a reasonable range. Too low an addition amount will result in a decrease in the content of non-polar components, affecting the dielectric constant and dielectric loss. However, too high an addition amount will affect the water solubility, which is not conducive to the storage and dispersing effect of the treating agent. The application controls the amount of the second silane coupling agent to be 0.05-1.9%, preferably 0.18-1.3%.

[0022] The experiment finds that the first silane coupling agent and the second silane coupling agent can play a synergistic effect when compounded, both of which contain carbon-carbon double bond functional groups in the molecular structure, and can enhance the addition reaction effect with the resin. The combination of the two silane coupling agents can simultaneously consider their water solubility and dispersibility, which is beneficial to improve the stability of the treatment agent; the second silane coupling agent can also improve the compatibility with the resin and reduce the polarity of the silane coupling agent, which is suitable for the application of high-frequency high-speed copper-clad plate.

[0023] Preferably, the wetting agent is a non-ionic multi-branched alcohol wetting agent. Further preferably, the non-ionic multi-branched alcohol wetting agent is one or a mixture of any of propoxylated butyne diol, dimethyl hexyne diol, diethoxy butyne diol ether, and butyne diol diethoxy ether.

[0024] The non-ionic multi-branched alcohol wetting agent has excellent water solubility, which can improve the dispersibility of the silane coupling agent in the aqueous solution, and in addition, the wetting agent can reduce the surface tension of the treatment agent, which is beneficial to the infiltration of the treatment agent on the surface of the glass fiber. The amount of the wetting agent needs to be controlled within a reasonable range, and too low amount of the wetting agent will reduce the infiltration effect of the treatment agent on the interface of the glass fiber; and if the amount of the wetting agent is too high, it will cause excessive retention on the glass fiber, which will affect the chemical bonding of the silane coupling agent and the glass fiber. The amount of the wetting agent is controlled to be 0.01-0.8%, preferably 0.03-0.6% in the present application.

[0025] Preferably, the pH value regulator is an acidic pH value regulator. Further preferably, the acidic pH value regulator is one or a mixture of any of acetic acid, oxalic acid, and citric acid.

[0026] The pH value regulator plays a role in maintaining the pH value of the treatment agent within a reasonable range, which can keep the silane coupling agent in a better stable state. The amount of the pH value regulator needs to be controlled within a reasonable range, and if the amount of the pH value regulator is too low, it will affect the hydrolysis of the silane coupling agent and reduce the stability of the treatment agent; and if the amount of the pH value regulator is too high, it will adversely affect the production operation environment and increase the manufacturing cost. The amount of the pH value regulator is controlled to be 0.02-2.7%, preferably 0.06-1.9% in the present application.

[0027] Preferably, the organic solvent is a small molecule organic solvent. Further preferably, the small molecule organic solvent is one or a mixture of any of methanol, ethanol, isopropanol, and n-propanol.

[0028] The organic solvent in the treatment agent for electronic-grade glass fiber cloth can increase the water solubility and uniform dispersibility of the silane coupling agent. Due to the low boiling point of the organic solvent, the organic solvent can be effectively separated from the finished glass fiber cloth during the production baking. The amount of the organic solvent needs to be controlled within a reasonable range. If the amount of the organic solvent is too low, the organic solvent cannot achieve the effect of dissolving the silane coupling agent. If the amount of the organic solvent is too high, the concentration of the volatile solvent will increase, which will affect the working environment. The amount of the organic solvent is controlled to be 0.5-9.0%, preferably 0.85-7.2%.

[0029] According to a second aspect of the present application, a preparation method of the aforementioned treatment agent for electronic-grade glass fiber cloth is provided, comprising the following steps:

[0030] 1S: adding water in a first container, and adding a wetting agent to be fully dissolved under stirring to obtain an aqueous solution;

[0031] 2S: adding a pH value regulator into the aqueous solution in step 1S to be uniformly dispersed;

[0032] 3S: adding a first silane coupling agent, a second silane coupling agent and an organic solvent in a second container, and stirring until uniformly mixed to obtain a mixed solution;

[0033] 4S: adding the mixed solution in the second container into the aqueous solution in the first container dropwise, and fully stirring to obtain the treatment agent for electronic-grade glass fiber cloth.

[0034] Preferably, in step 1S, the stirring speed is 50-80 rpm, and the water is deionized water.

[0035] Preferably, in step 3S, the stirring speed is 70-100 rpm.

[0036] Preferably, in step 4S, the dropwise adding time is 30-60 min, the stirring speed is 60-90 rpm, and the pH value of the treatment agent for electronic-grade glass fiber cloth is 3.0-5.0.

[0037] According to a third aspect of the present application, a fiber cloth produced by treating the aforementioned treatment agent for electronic-grade glass fiber cloth is provided, and the fiber cloth is E-glass electronic-grade glass fiber cloth or low-dielectric electronic-grade glass fiber cloth.

[0038] According to a fourth aspect of the present application, the aforementioned electronic-grade glass fiber cloth is applied in the field of copper-clad plates, especially in the field of high-frequency and high-speed copper-clad plates.

[0039] The present application provides a treatment agent for electronic-grade glass fiber cloth and a preparation method thereof. Compared with the prior art, the present application has the following beneficial effects:

[0040] The application is based on a large number of laboratory research and production applications, and innovatively uses a complex of a silane coupling agent containing acrylamide and a silane coupling agent containing a carbon-carbon double bond long alkyl group to synergistically treat electronic-grade glass fiber cloth, improve the addition cross-linking reaction effect of PPO resin, hydrocarbon resin and other resin on copper clad plate, and improve the heat resistance and other use performances; and the introduction of long alkyl group can reduce the polarity of the treating agent, improve the electrical performance, and be suitable for high-frequency high-speed copper clad plate use; in addition, the appropriate addition of wetting agent, pH adjuster and organic solvent in the treating agent can improve the stability of the treating agent, realize uniform dispersion of the silane coupling agent, prolong the storage and use period of the treating agent, and improve the operation production cycle and production efficiency; in addition, the treating agent of the application can enhance the treatment effect on glass fiber, and improve the wettability and mechanical properties of the glass fiber cloth. DETAILED DESCRIPTION

[0041] To make the purpose, technical scheme and advantages of the application clearer, the technical scheme of the application will be described clearly and completely below in combination with specific embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other in any manner without conflict.

[0042] The treating agent for electronic-grade glass fiber cloth of the application is an aqueous solution, which comprises effective components and water, wherein the effective components comprise a first silane coupling agent, a second silane coupling agent, a wetting agent, a pH adjuster and an organic solvent. The content of each component is expressed as a mass percentage as follows:

[0043]

[0044] Preferably, the content of each component is expressed as a mass percentage as follows:

[0045]

[0046] The first silane coupling agent is an acrylamide silane coupling agent; the structure formula of the acrylamide silane coupling agent is CH2=CHR1CONH(CH2) n Si(OR2)3, R1 is one of H and CH3; n is 1-3; R2 is one of H, CH3 and CH2CH3; further, the acrylamide silane coupling agent is one or a mixture of any number of methacrylamidopropyl trimethoxysilane, methacrylamidopropyl trimethoxysilane, methacrylamidopropyl triethoxysilane and methacrylamidopropyl trihydroxysilane.

[0047] The second silane coupling agent is a carbon-carbon double-bond long alkyl silane coupling agent; the carbon-carbon double-bond long alkyl silane coupling agent is one or a mixture of any of 7-octenyltrimethoxysilane, 5-hexenyltrimethoxysilane, and docosyltriethoxysilane.

[0048] The wetting agent is a nonionic multi-branched alcohol wetting agent; the nonionic multi-branched alcohol wetting agent is one or a mixture of any of the following: propoxylated butynediol, dimethylhexynediol, diethoxybutynediol ether, butynediol diethoxy ether.

[0049] The pH adjuster is an acidic pH adjuster; the acidic pH adjuster is one or a mixture of any of the following: acetic acid, oxalic acid, and citric acid.

[0050] The organic solvent is a small molecule organic solvent; specifically, it is one or any mixture of methanol, ethanol, isopropanol, and n-propanol.

[0051] The preparation method of the aforementioned electronic-grade glass fiber cloth treatment agent includes the following steps:

[0052] 1S: Add water to the first container, and while stirring, add a wetting agent to dissolve it completely to obtain the first solution, which is an aqueous solution;

[0053] 2S: Add the pH adjuster to the aqueous solution described in step 1S and disperse it evenly;

[0054] 3S: Add the first silane coupling agent, the second silane coupling agent, and the organic solvent to the second container, and stir until they are evenly mixed to obtain a mixture;

[0055] 4S: Add the mixture from the second container to the aqueous solution in the first container, stir thoroughly, and obtain the electronic-grade glass fiber cloth treatment agent.

[0056] In step 1S, the stirring speed is 50-80 rpm; in step 3S, the stirring speed is 70-100 rpm; in step 4S, the dripping time is 30-60 min; in step 4S, the stirring speed is 60-90 rpm, and the pH value of the electronic grade glass fiber cloth treatment agent is 3.0-5.0.

[0057] To more clearly explain the technical solution of this application, Table 1 lists some specific embodiments (Examples 1 to 8) of the electronic-grade glass fiber cloth treatment agent of this application. The values ​​in Table 1 are the mass percentages of each component.

[0058] It should be noted that the specific types, contents, and combinations of the components selected in Table 1 do not limit the scope of protection of this application.

[0059] Table 1 lists the formulations of each example

[0060]

[0061]

[0062] Table 1 lists the formulations of each example

[0063]

[0064]

[0065] wherein,

[0066] The preparation method of the treatment agent of Example 1 includes the following steps:

[0067] 1S: Add the formulation content of deionized water in a first container, and add the wetting agent to fully dissolve under stirring at a speed of 60 rpm to obtain an aqueous solution;

[0068] 2S: Add the pH adjuster to the aqueous solution to uniformly disperse;

[0069] 3S: Add the first silane coupling agent, the second silane coupling agent, and the organic solvent in a second container, and uniformly mix under stirring at a speed of 80 rpm;

[0070] 4S: Drop the mixed solution in the second container into the aqueous solution in the first container, and fully stir at a speed of 70 rpm for 45 min to obtain the treatment agent for electronic-grade glass fiber cloth, with a pH value of 3.5, and store for use.

[0071] The preparation method of the treatment agent of Example 2 includes the following steps:

[0072] 1S: Add the formulation content of deionized water in a first container, and add the wetting agent to fully dissolve under stirring at a speed of 50 rpm to obtain an aqueous solution;

[0073] 2S: Add the pH adjuster to the aqueous solution to uniformly disperse;

[0074] 3S: Add the first silane coupling agent, the second silane coupling agent, and the organic solvent in a second container, and uniformly mix under stirring at a speed of 100 rpm;

[0075] 4S: Drop the mixed solution in the second container into the aqueous solution in the first container, and fully stir at a speed of 80 rpm for 60 min to obtain the treatment agent for electronic-grade glass fiber cloth, with a pH value of 3.7, and store for use.

[0076] The preparation method of the treatment agent of Example 3 includes the following steps:

[0077] 1S: Add the formula content of deionized water into the first container, and add the wetting agent to fully dissolve under the stirring of 80 rpm, to obtain an aqueous solution;

[0078] 2S: Add the pH regulator into the above aqueous solution to uniformly disperse;

[0079] 3S: Add the first silane coupling agent, the second silane coupling agent and the organic solvent into the second container, and uniformly mix under the stirring of 70 rpm;

[0080] 4S: Drop the mixed solution in the second container into the aqueous solution in the first container, and fully stir at 90 rpm for 30 min, to obtain the treating agent for electronic-grade glass fiber cloth with a pH value of 3.2, and store for use.

[0081] The preparation method of the treating agent of Example 4 comprises the following steps:

[0082] 1S: Add the formula content of deionized water into the first container, and add the wetting agent to fully dissolve under the stirring of 70 rpm, to obtain an aqueous solution;

[0083] 2S: Add the pH regulator into the above aqueous solution to uniformly disperse;

[0084] 3S: Add the first silane coupling agent, the second silane coupling agent and the organic solvent into the second container, and uniformly mix under the stirring of 80 rpm;

[0085] 4S: Drop the mixed solution in the second container into the aqueous solution in the first container, and fully stir at 60 rpm for 55 min, to obtain the treating agent for electronic-grade glass fiber cloth with a pH value of 3.1, and store for use.

[0086] The preparation method of the treating agent of Example 5 comprises the following steps:

[0087] 1S: Add the formula content of deionized water into the first container, and add the wetting agent to fully dissolve under the stirring of 60 rpm, to obtain an aqueous solution;

[0088] 2S: Add the pH regulator into the above aqueous solution to uniformly disperse;

[0089] 3S: Add the first silane coupling agent, the second silane coupling agent and the organic solvent into the second container, and uniformly mix under the stirring of 80 rpm;

[0090] 4S: Drop the mixed solution in the second container into the aqueous solution in the first container, and fully stir at 70 rpm for 30 min, to obtain the treating agent for electronic-grade glass fiber cloth with a pH value of 4.7, and store for use.

[0091] The preparation method of the treating agent of Example 6 comprises the following steps:

[0092] 1S: Add the formula content of deionized water into a first container, and add the wetting agent to be fully dissolved under stirring at a rotation speed of 80 rpm to obtain an aqueous solution;

[0093] 2S: Add the pH regulator into the aqueous solution to be uniformly dispersed;

[0094] 3S: Add the first silane coupling agent, the second silane coupling agent and the organic solvent into a second container, and uniformly mix them under stirring at a rotation speed of 70 rpm;

[0095] 4S: Drop the mixture in the second container into the aqueous solution in the first container, and fully stir at a rotation speed of 80 rpm for 40 min to obtain the treating agent for electronic glass fiber cloth, with a pH value of 3.0, which is stored for use.

[0096] The preparation method of the treating agent of Example 7 comprises the same steps as those of Example 1, and the pH value of the treating agent is 4.5.

[0097] The preparation method of the treating agent of Example 8 comprises the same steps as those of Example 4, and the pH value of the treating agent is 3.1.

[0098] In order to better explain the effect of the present application, two conventional treating agents suitable for electronic glass fiber are selected as comparative examples (Comparative Example 1 and Comparative Example 2) and a treating agent with different content ratio (Comparative Example 3) for comparison test, and the raw materials of the electronic glass fiber cloth treating agent are expressed by mass percentage.

[0099] Comparative Example 1

[0100] Dynasylan HYDROSIL 1151 silane coupling agent 1.35%, Capstone FS-30 auxiliary agent 0.27%, acetic acid 0.86%, and the balance is deionized water.

[0101] The preparation method of the treating agent for electronic glass fiber cloth comprises the following steps:

[0102] 1S: Add a certain amount of deionized water into a container, and add the auxiliary agent to be fully dissolved under stirring at a rotation speed of 70 rpm;

[0103] 2S: Add acetic acid into the above solution to be uniformly dispersed;

[0104] 3S: Add the silane coupling agent into the container, and uniformly mix them under stirring at a rotation speed of 80 rpm to obtain the treating agent for electronic glass fiber cloth.

[0105] Comparative Example 2

[0106] Dynasylan HYDROSIL 1151 silane coupling agent 0.83%, Capstone FS-30 adjuvant 0.09%, acetic acid 1.27%, the balance being deionized water.

[0107] The preparation method of the treating agent for electronic-grade glass fiber cloth comprises the following steps:

[0108] 1S: A certain amount of deionized water is added to a container, and an adjuvant is added and fully dissolved under stirring at a speed of 70 rpm;

[0109] 2S: Acetic acid is added to the above solution and uniformly dispersed;

[0110] 3S: A silane coupling agent is added to the container and uniformly mixed under stirring at a speed of 80 rpm, to obtain the treating agent for electronic-grade glass fiber cloth.

[0111] Comparative Example 3

[0112] The treating agent for electronic-grade glass fiber cloth is prepared according to the following raw material mass percentage: methacrylamidopropyltrimethoxysilane 0.87%, 5-hexenyltrimethoxysilane 2.69%, butynediol diethoxyl ether 1.0%, acetic acid 2.26%, ethanol 0.4%, and the balance being deionized water (92.78%).

[0113] The preparation method of the treating agent for electronic-grade glass fiber cloth is the same as that of Example 4. The treating agents prepared in the examples and comparative examples are respectively used for the infiltration treatment of 1078 electronic-grade glass fiber BH cloth on a surface treatment machine, and the electronic-grade glass fiber cloth products are obtained after drying. The performance comparison tests of the electronic-grade glass fiber cloth products prepared by the downstream polyphenyl ether resin to prepare copper-clad plate materials are as follows:

[0114] Table 2 Test results of each example and comparative example

[0115]

[0116] Table 2 (continued) Test results of each example and comparative example

[0117]

[0118]

[0119] The test data of the above table show that the treatment agent of the embodiments of the present application greatly reduces turbidity compared to each of the comparative examples after just being prepared and after 24 hours, the stability of the treatment agent is significantly improved, and the dispersion is more uniform, which can effectively improve the service life of the treatment agent production. The immersion time of the glass fiber cloth of the embodiments is shorter than that of each of the comparative examples, and the wetting performance is improved. The tensile strength of the glass fiber cloth in the warp and weft directions of the embodiments is significantly higher than that of each of the comparative examples, and the embodiments have better mechanical properties. In terms of copper-clad plate heat resistance test, the explosion-proof plate time of the embodiments is longer than that of the comparative examples, showing better heat resistance. The dielectric constant and dielectric loss factor of the copper-clad plate of the embodiments are significantly lower than those of the comparative examples, showing more excellent dielectric properties.

[0120] In summary, the treatment agent for electronic-grade glass fiber cloth provided by the present application can significantly improve the stability and dispersion uniformity of the treatment agent. The electronic-grade glass fiber cloth treated by the treatment agent has more excellent wetting and mechanical properties, higher heat resistance, and lower dielectric constant and dielectric loss factor, and is more suitable for use in high-frequency and high-speed copper-clad plates.

[0121] Finally, it should be noted that in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or device that includes the element.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A treating agent for electronic-grade glass fiber cloth, characterized by, The treating agent comprises the following components, the content of each component is expressed by mass percentage as follows:

2. The treating agent for electronic-grade glass fiber cloth according to claim 1, characterized by, The content of each component of the treating agent is expressed by mass percentage as follows:

3. The electronic-grade glass fiber cloth treatment agent according to claim 1 or 2, characterized by, The first silane coupling agent is an acrylamide silane coupling agent, and its structural formula is CH2=CHR1CONH(CH2) n Si(OR2)3, wherein R1 is one of H, CH3; n is 1-3; R2 is one of H, CH3, CH2CH3.

4. The treating agent for electronic-grade glass fiber cloth according to claim 3, characterized by The first silane coupling agent is one or a mixture of any of the following: methacrylamidopropyl trimethoxysilane, acrylamidopropyl trimethoxysilane, methacrylamidopropyl triethoxysilane and methacrylamidopropyl trihydroxysilane.

5. The electronic-grade glass fiber cloth treatment agent according to claim 1 or 2, characterized by, The second silane coupling agent is a carbon-carbon double bond containing long alkyl silane coupling agent, specifically, the second silane coupling agent is one or a mixture of any of the following: 7-octenyl trimethoxysilane, 5-hexenyl trimethoxysilane and docosenyl triethoxysilane.

6. The electronic-grade glass fiber cloth treatment agent according to claim 1 or 2, characterized by, The wetting agent is a non-ionic multi-branched alcohol wetting agent.

7. The treating agent for electronic-grade glass fiber cloth according to claim 6, characterized by The wetting agent is one or a mixture of any of the following: propoxylated butynediol, dimethyl hexyne diol, diethoxy butynediol ether and butynediol diethoxy ether.

8. The electronic-grade glass fiber cloth treatment agent according to claim 1 or 2, characterized by, The pH value adjusting agent is an acidic pH value adjusting agent; the acidic pH value adjusting agent is one or a mixture of any of the following: acetic acid, oxalic acid and citric acid.

9. The treating agent for electronic-grade glass fiber cloth according to claim 1 or 2, characterized by, The organic solvent is one or a mixture of any of the following: methanol, ethanol, isopropanol and n-propanol.

10. The process for producing a treating agent for electronic-grade glass fiber cloth according to any one of claims 1 to 9, characterized by, The method comprises the following steps: 1S: adding water in a first container, under stirring, adding the wetting agent to fully dissolve to obtain an aqueous solution; 2S: adding the pH value adjusting agent into the aqueous solution of step 1S to uniformly disperse; 3S: adding the first silane coupling agent, the second silane coupling agent and the organic solvent in a second container, stirring until uniformly mixed to obtain a mixture; 4S: adding the mixture in the second container dropwise into the aqueous solution in the first container, fully stirring to obtain the treating agent for electronic grade glass fiber cloth.

11. The method of producing a treating agent for electronic-grade glass fiber cloth according to claim 10, characterized by, In step 1S, the stirring speed is 50-80 rpm; in step 3S, the stirring speed is 70-100 rpm; in step 4S, the dropwise adding time is 30-60 min; in step 4S, the stirring speed is 60-90 rpm, and the pH value of the treating agent for electronic grade glass fiber cloth is 3.0-5.

0.

12. A fiber cloth produced by using the treating agent for electronic grade glass fiber cloth according to any one of claims 1-9, wherein the fiber cloth is E-glass electronic grade glass fiber cloth or low dielectric electronic grade glass fiber cloth.

13. Use of the electronic grade glass fiber cloth according to claim 12 in the field of high-frequency high-speed copper-clad boards.

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