TW202221189A - Fiberglass cloth and processing method of fiberglass cloth manufactured by low dielectric fiberglass filaments - Google Patents

Abstract

A fiberglass cloth and a processing method of a fiberglass cloth manufactured by low dielectric fiberglass filaments are provided. The fiberglass filaments can be woven to form the fiberglass cloth. Each of the fiberglass filaments includes boron trioxide, silicon dioxide, aluminum oxide, and magnesium oxide. Based on 100 parts by weight of each of the fiberglass filaments, a content of the boron trioxide is within 20.13 to 25 parts by weight, a content of the silicon dioxide is within 50 to 55 parts by weight, a content of the aluminum oxide is within 14 to 19 parts by weight, and a content of the magnesium oxide is within 0.1 to 8.5 parts by weight.

Description

Glass fiber cloth and processing method of glass fiber cloth made of low-dielectric glass fiber filaments

The invention relates to a glass fiber cloth and a processing method of the glass fiber cloth made of glass fiber filaments, in particular to a low-dielectric glass fiber cloth and a processing method of the glass fiber cloth made of low-dielectric glass fiber filaments.

With the development of faster and low-latency wireless communication technology, the demand for high-frequency and high-speed printed circuit boards has increased, which has also accelerated the development of electronic materials. In addition, the terminal products are developing towards thin, small, and precise, and they need to have lower dielectric constant (Dk) and dissipation factor (Df) to meet the demand. The existing glass fiber cloth as a reinforcing material in the carrier plate has the advantages of good insulation performance and good thermal expansion. However, the glass fiber cloth commonly used in circuit boards at present is woven by E glass, and its dielectric constant is high, about It is between 6.8 and 7.0, and the dispersion factor of the glass fiber cloth woven by E glass is larger. Therefore, the glass fiber cloth woven by E glass can no longer meet the application requirements of high frequency and high speed.

In addition, since the glass fiber cloth adopts the plain weaving method, there will be cross nodes in the intersecting parts of the woven fibers, so that the insulating medium of the glass fiber cloth in the circuit substrate is not uniformly distributed. Therefore, in general, a fiber opening operation is performed on the glass fiber cloth. However, since most of the existing fiber-opening methods are carried out after the glass fiber cloth is impregnated with a silane coupling agent, the existing fiber-opening method not only has limited fiber-opening effect, but also easily destroys the coating of the silane coupling agent on the glass fiber cloth. The integrity of the glass fiber cloth, which in turn affects the characteristics of the fiberglass cloth.

Therefore, how to improve the composition of glass fiber filaments, so that the glass fiber cloth woven from the glass fiber filaments can provide the characteristics of low dielectric constant and low dissipation factor, and provide the silane coupling agent coating on the glass without destroying it. The processing method of the glass fiber cloth with the integrity of the fiber cloth and the better fiber opening effect to overcome the above-mentioned defects has become one of the important issues to be solved by this business.

The technical problem to be solved by the present invention is to provide a glass fiber cloth and a glass fiber cloth processing method made of low-dielectric glass fiber filaments in view of the deficiencies of the prior art. Compared with the existing glass fiber cloth, the Glass fiber cloth has the characteristics of low dielectric constant and low dissipation factor, so as to meet the application requirements of high frequency and high speed, and it is not easy to affect the operation performance due to the generation of air bubbles, and compared with the existing fiber opening method of glass fiber cloth , the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments of the present invention can also provide a better fiber opening effect without destroying the integrity of the silane coupling agent coated on the glass fiber cloth .

In order to solve the above-mentioned technical problems, one of the technical solutions adopted in the present invention is to provide a glass fiber cloth, which is woven from a plurality of glass fiber filaments, and each of the glass fiber filaments contains B ₂ O ₃ , SiO ₂ , Al ₂ O ₃ , and MgO; wherein, based on the total weight of each of the glass fiber filaments being 100 wt %, the content of B ₂ O ₃ ranges from 20.13 wt % to 25 wt %, and the content of SiO ₂ The range is between 50 wt% and 55 wt%, the content of _Al2O3 is between ₁₄ wt% and 19 wt%, and the content of MgO is between 0.1 wt% and 8.5 wt% .

In order to solve the above-mentioned technical problems, one of the technical solutions adopted by the present invention is to provide a processing method of glass fiber cloth made of low-dielectric glass fiber filaments, which includes: a preparation step: providing a glass fiber cloth; The fiber opening step: applying a pressure to the glass fiber cloth to open the glass fiber cloth; wherein, the pressure is between 1Kg/cm ² to 10Kg/cm ² ; and an impregnation step: making The glass fiber cloth is soaked in a treatment liquid; wherein, the treatment liquid contains a surfactant and a silane coupling agent.

One of the beneficial effects of the present invention is that the glass fiber cloth provided by the present invention and the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments can pass through "the glass fiber filaments contain B ₂ O ₃ . , SiO ₂ , Al ₂ O ₃ , and MgO” and “Based on the total weight of the glass fiber filaments as 100 wt %, the content of B ₂ O ₃ ranges from 20.13 wt % to 25 wt %, and SiO ₂ The content of Al2O3 ranges from 50 wt% to 55 wt%, the content of _Al2O3 ranges from ₁₄ wt% to 19 wt%, and the content of MgO ranges from 0.1 wt% to 8.5 wt% "Between" technical solution, so that the glass fiber cloth can have low dielectric constant and low dissipation factor, so as to meet the application requirements of high frequency and high speed, and it is not easy to affect the operation performance due to the generation of air bubbles.

One of the beneficial effects of the present invention is that the glass fiber cloth provided by the present invention and the processing method of the glass fiber cloth made of The processing method of the glass fiber cloth includes a preparation step, a fiber opening step, and an impregnation step" and "during the fiber opening step, a pressure is applied to the glass fiber cloth to open the glass fiber cloth. fiber, and the pressure is between 1Kg/cm ² to 10Kg/cm ² "technical solution, in order to provide better quality without destroying the integrity of the silane coupling agent coated on the glass fiber cloth. Fibre effect.

For a further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

The following are specific specific examples to illustrate the embodiments of the present disclosure about "glass fiber cloth and a method for processing glass fiber cloth made of low-dielectric glass fiber filaments", which can be disclosed by those skilled in the art in this specification. content to understand the advantages and effects of the present invention. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention.

It should be understood that although terms such as "first", "second" and "third" may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are primarily used to distinguish one element from another element, or a signal from another signal. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

[Glass fiber cloth and fiberglass yarn]

The invention provides a glass fiber cloth and a glass fiber filament, and the glass fiber cloth is woven from a plurality of the glass fiber filaments. It should be noted that the glass fiber filaments are not limited to be woven into the glass fiber cloth. For example, in other embodiments, the glass fiber filaments can also be used individually (eg, sold). In addition, the glass fiber cloth can be applied to the related process of the circuit board, but the present invention is not limited thereto.

Each of the glass fiber filaments includes silicon dioxide SiO ₂ , aluminum oxide Al ₂ O ₃ , boron trioxide B ₂ O ₃ , and magnesium oxide MgO, which are abbreviated as chemical formulas of the components below. Based on the total weight of each of the glass fiber filaments being 100 wt %, the content of SiO ₂ ranges from 50 wt % to 55 wt %, and the content of Al ₂ O ₃ ranges from 14 wt % to 19 wt % The content of B ₂ O ₃ ranges from 20.13 wt % to 25 wt %, and the content of MgO ranges from 0.1 wt % to 8.5 wt %.

After the glass is drawn into the glass fiber filaments by a spinning machine, the average filament diameter of the glass fiber filaments is between 4 μm and 7 μm. Since the glass fiber filaments in this embodiment have the average filament diameter between 4 μm and 7 μm, the glass fiber cloth woven from the glass fiber filaments can be particularly suitable for circuit boards related process, but the present invention is not limited to this.

Through the selection of specific materials contained in the glass fiber filaments and their respective specific content ranges, the glass fiber cloth provided by the present invention has a dielectric constant of less than 4.8 and a dissipation factor of less than 0.001 at a frequency of 1 GHz, so that the The glass fiber cloth can meet the high-frequency and high-speed application requirements of the existing circuit boards (that is, the requirements for low dielectric constant and low dissipation factor), and the glass fiber cloth provided by the present invention is not easy to be used in the manufacturing process. The generation of air bubbles affects the operating performance.

[Processing method of glass fiber cloth made of low-dielectric glass fiber filaments]

The present invention also provides a method for processing glass fiber cloth made of low-dielectric glass fiber filaments, and the implementation object of the method for processing glass fiber cloth made of low-dielectric glass fiber filaments can be as described above Glass fiber cloth or other glass fiber cloth, the present invention is not limited here.

The processing method of the glass fiber cloth made of low-dielectric glass fiber filaments includes a preparation step S110, a fiber opening step S120, and an impregnation step S130. In the preparation step S110, a glass fiber cloth is provided. The glass fiber cloth is woven from a plurality of glass fiber filaments, and each of the glass fiber filaments contains B ₂ O ₃ , SiO ₂ , Al ₂ O ₃ , and MgO. The content of B ₂ O ₃ ranges from 20.13 wt % to 25 wt %, and the content of SiO ₂ ranges from 50 wt % to 55 wt %, based on the total weight of each of the glass fiber filaments being 100 wt %. The content of Al ₂ O ₃ ranges from 14 wt % to 19 wt %, and the content of MgO ranges from 0.1 wt % to 8.5 wt %. In the fiber opening step S120, a pressure is applied to the glass fiber cloth to open the glass fiber cloth, and the pressure is between 1Kg/cm ² to 10Kg/cm ² . Specifically, in the fiber opening step S120 , the fiberglass cloth is opened by extrusion, high-pressure water washing, friction, or water needle. It should be noted that, as long as a pressure between 1 Kg/cm ² and 10 Kg/cm ² can be applied to the glass fiber cloth, the present invention does not limit the pressure application method during fiber opening.

In the impregnation step S130, the glass fiber cloth is soaked in a treatment liquid, and the treatment liquid includes a surfactant and a silane coupling agent. Specifically, the surfactant is selected from polypropylene glycol polyglycol ether, fatty acid methyl ester ethoxylate, polyglycol phenol ether, ethylene oxide/propylene oxide copolymer, polyoxypropylene polyoxyethylene ether, and at least one of the material group consisting of substituted ethylene glycol with partially fluorinated alcohol, but the present invention is not limited thereto. The silane coupling agent has the following general formula: X(R) _3-n SiY _n ; wherein, X is an organic functional group with at least one amine group and or at least one unsaturated double bond group, and Y is an alkane Oxygen, n is 1 or 2, and R is methyl, ethyl, carbonyl, ester, epoxy, or phenyl.

The glass fiber cloth can have an opening degree of not less than 50% and a moisture content of not more than 0.01% after the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments is performed. Preferably, the openness is between 50% and 67%, and the moisture content is between 0.005% and 0.007%.

[Experimental data test]

Hereinafter, the content of the present invention will be described in detail with reference to Exemplary Examples 1 to 5 and Comparative Examples 1 to 5. However, the following exemplary examples are provided only as an aid to understand the present invention, and the scope of the present invention is not limited to these exemplary examples.

Example 1: A glass fiber cloth (such as 2116 cloth) was subjected to the above-described processing method of glass fiber cloth made of low-dielectric glass fiber filaments, and then heated and dried to obtain a product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether, partial fluorine Alcohols replace ethylene glycol and polyoxypropylene polyoxyethylene ether.

Example 2: The processing method of glass fiber cloth made of low dielectric glass fiber filaments is carried out on a glass fiber cloth (such as 1080 cloth), heated and dried, and then obtained by high-pressure water for fiber opening treatment. product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether, partial fluorine Alcohols replace ethylene glycol and polyoxypropylene polyoxyethylene ether.

Example 3: The processing method of glass fiber cloth made of low dielectric glass fiber filaments is carried out on a glass fiber cloth (such as 1078 cloth), and the product is obtained by heating and drying treatment. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether, partial fluorine Alcohols replace ethylene glycol and polyoxypropylene polyoxyethylene ether.

Example 4: A glass fiber cloth (such as 1067 cloth) is subjected to the processing method of glass fiber cloth made of low-dielectric glass fiber filaments, heated and dried, and then obtained by high-pressure water for fiber opening treatment. product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether, partial fluorine Alcohols replace ethylene glycol and polyoxypropylene polyoxyethylene ether.

Example 5: A glass fiber cloth (such as 1035 cloth) was subjected to the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments, and then heated and dried, and then obtained by using high-pressure water for fiber opening treatment. product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether and part of fluorine Alcohols are substituted for ethylene glycol.

Comparative Example 1: A glass fiber cloth (such as 2116 cloth) was impregnated in the treatment liquid, heated and dried, and then fiber-opened with high-pressure water to obtain a product. In the treatment solution, the methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactants are polyglycol phenol ether and polypropylene glycol polyglycol ether.

Comparative Example 2: Impregnate a glass fiber cloth (such as 1067 cloth) in the treatment liquid, heat and dry it, and then perform fiber opening treatment with high-pressure water to obtain a product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether and polypropylene glycol Polyglycol ether.

Comparative Example 3: A glass fiber cloth (such as 1078 cloth) was impregnated in the treatment solution, heated and dried, and then fiber-opened with high-pressure water to obtain a product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether and polypropylene glycol Polyglycol ether.

Comparative Example 4: Impregnate a glass fiber cloth (such as 3313 cloth) in the treatment liquid, heat and dry it, and then perform fiber opening treatment with high-pressure water to obtain a product. In the treatment solution, the silane coupling agent is 3-(2,3-glycidoxy)propyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6040), and the surfactant is poly Glycohol phenol ether and polypropylene glycol polyglycol ether.

Comparative Example 5: A glass fiber cloth (such as 1035 cloth) was impregnated in the treatment solution, heated and dried, and then fiber-opened with high-pressure water to obtain a product. In the treatment solution, the silane coupling agent is methacryloxypropyltrimethoxysilane (manufactured by Dow Corning Co., Ltd.; OFS6030), and the surfactant is polyglycol phenol ether and polypropylene glycol Polyglycol ether.

After performing the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments, the openness and moisture content of the glass fiber cloths of Example 1 to 5 and Comparative Examples 1 to 5 are sorted as shown in Table 1 below, And the relevant test parameters and methods are as follows. It is worth mentioning that the openness refers to the ratio of overlapping coverage of warp and weft yarns within the unit density (1inch*1inch) of each glass cloth.

Openness test: use a high-magnification optical microscope to measure the warp and weft yarns on the glass fiber cloth by randomly selecting 100 each to measure the width of the yarn bundle and take the average value, and then calculate the density of each glass fiber cloth.

Moisture content test: measure the glass fiber cloth in units of less than 0.1 mg, and then put it into a dryer at 105°C ± 5°C for at least 30 minutes to dry. After drying, move the fiberglass cloth to a desiccator and let it cool to room temperature. After standing to cool, the glass fiber cloth was measured in units of 0.1 mg or less. The moisture content obtained by using the above measurement method.

[Table 1 Characteristic test results of example and comparative examples] Example 1 (2116) Example 2 (1080) Example 3 (1078) Example 4 (1067) Example 5 (1035) Openness (%) 67 58 50 50 50 Moisture content (%) 0.005 0.006 0.007 0.007 0.007 Comparative Example 1 (2116) Comparative Example 2 (1067) Comparative Example 3 (1078) Comparative Example 4 (3313) Comparative Example 5 (1035) Openness (%) 63 40 43 58 37 Moisture content (%) 0.010 0.014 0.011 0.008 0.012

[Test results discussion]

Since the glass fiber cloth of Comparative Examples 1 to 5 did not implement the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments, but only performed fiber opening after impregnation with the treatment liquid, compared with the comparative examples Examples 1 to 5, the glass fiber cloths of Examples 1 to 5 can have relatively high opening degree and relatively low water content after implementing the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments Rate.

[Beneficial effects of the embodiments of the present invention]

One of the beneficial effects of the present invention is that the glass fiber cloth provided by the present invention and the processing method of the glass fiber cloth made of low-dielectric glass fiber filaments can pass through "the glass fiber filaments contain B ₂ O ₃ . , SiO ₂ , Al ₂ O ₃ , and MgO” and “Based on the total weight of the glass fiber filaments as 100 wt %, the content of B ₂ O ₃ ranges from 20.13 wt % to 25 wt %, and SiO ₂ The content ranges from 50 wt% to 55 wt%, the _Al2O3 content ranges from ₁₄ wt% to 19 wt%, and the MgO content ranges from 0.1 wt% to 8.5 wt% %” technical solution, so that the glass fiber cloth can have low dielectric constant and low dissipation factor, so as to meet the application requirements of high frequency and high speed, and it is not easy to affect the operation performance due to the generation of air bubbles.

One of the beneficial effects of the present invention is that the glass fiber cloth provided by the present invention and the processing method of the glass fiber cloth made of The processing method of the glass fiber cloth includes a preparation step, a fiber opening step, and an impregnation step" and "during the fiber opening step, a pressure is applied to the glass fiber cloth to open the glass fiber cloth. fiber, and the pressure is between 1Kg/cm ² to 10Kg/cm ² "technical solution, in order to provide better quality without destroying the integrity of the silane coupling agent coated on the glass fiber cloth. Fibre effect.

The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

S110: Preparation steps S120: Fiber opening step S130: Impregnation step

FIG. 1 is a schematic flowchart of a method for processing a glass fiber cloth made of low-dielectric glass fiber filaments according to an embodiment of the present invention.

S110: Preparation steps

S120: Fiber opening step

S130: Impregnation step

Claims (8)

A glass fiber cloth is woven from a plurality of glass fiber filaments, and each of the glass fiber filaments contains B ₂ O ₃ , SiO ₂ , Al ₂ O ₃ , and MgO; wherein, based on each of the glass fiber filaments The total weight is 100 wt%, the content of B ₂ O ₃ ranges from 20.13 wt % to 25 wt %, the content of SiO ₂ ranges from 50 wt % to 55 wt %, and the content of Al ₂ O ₃ The content ranges from 14 wt% to 19 wt%, and the content of MgO ranges from 0.1 wt% to 8.5 wt%. The glass fiber cloth of claim 1, wherein the average wire diameter of each of the glass fiber filaments is between 4 μm and 7 μm, and the glass fiber cloth has a dielectric constant of less than 4.8 at a frequency of 1 GHz, And the glass fiber cloth has a dissipation factor of less than 0.001. A method for processing glass fiber cloth made of low-dielectric glass fiber filaments, comprising: a preparation step: providing a glass fiber cloth according to claim 1; a fiber opening step: applying a A pressure to open the glass fiber cloth; wherein, the pressure is between 1Kg/cm ² to 10Kg/cm ² ; and an impregnation step: soaking the glass fiber cloth in a treatment solution ; Wherein, the treatment liquid contains a surfactant and a silane coupling agent. The method for processing glass fiber cloth made of low-dielectric glass fiber filaments according to claim 3, wherein, in the fiber opening step, the method of extrusion, high-pressure water rinsing, friction, or water The glass fiber cloth is opened by needle method. The method for processing glass fiber cloth made of low-dielectric glass fiber filaments according to claim 3, wherein, in the impregnation step, the surfactant is selected from polypropylene glycol polyglycol ether, fatty acid methyl ester At least one of the material group consisting of ethoxylate, polyglycol phenol ether, ethylene oxide/propylene oxide copolymer, polyoxypropylene polyoxyethylene ether, and partially fluorinated alcohol substituted ethylene glycol. The method for processing glass fiber cloth made of low-dielectric glass fiber filaments according to claim 3, wherein, in the impregnation step, the silane coupling agent has the following general formula: X(R) _3-n SiY _n ; wherein, X is an organic functional group having at least one of amine groups and or at least one of unsaturated double bond groups, Y is an alkoxy group, n is 1 or 2, and R is methyl, ethyl , carbonyl, ester, epoxy, or phenyl. The method for processing a glass fiber cloth made of low-dielectric glass fiber filaments according to claim 3, wherein the glass fiber cloth is subjected to the processing of the glass fiber cloth made of low-dielectric glass fiber filaments. After the processing method, it can have an opening degree of not less than 50% and a moisture content of not more than 0.01%. The processing method of glass fiber cloth made of low-dielectric glass fiber filaments as claimed in claim 7, wherein the opening degree is between 50% and 67%, and the moisture content is between 0.005 % to 0.007%.

Images