阅读说明：本技术 一种玻璃纤维电子布浆料及其制备方法和应用 (Glass fiber electronic cloth slurry and preparation method and application thereof ) 是由 姚慧 方俊 马哲 王富峰 杜家奎 于 2020-10-28 设计创作，主要内容包括：本申请涉及一种玻璃纤维电子布浆料及其制备和应用,该玻璃纤维电子布浆料包括如下组分,各组分的含量以重量百分比表示为：填充剂3.0％～7.0％；成膜剂1.0％～3.0％；粘结剂0.7％～1.5％；酸度调节剂0.5％～1.5％；渗透剂0.01％～0.07％；杀菌剂0.006％～0.01％；水86.92％～94.784％。采用本申请的玻璃纤维电子布浆料制得的电子布,能够有效提升电子布的蓬松感,提高经纱纱宽,降低电子布的透气度,改善含浸性能,同时保证了纱线在织造过程中具备足够的润滑性能和集束性能,减少了布面疵点的产生。(The application relates to glass fiber electronic cloth slurry and preparation and application thereof, wherein the glass fiber electronic cloth slurry comprises the following components in percentage by weight: 3.0 to 7.0 percent of filling agent; 1.0 to 3.0 percent of film-forming agent; 0.7 to 1.5 percent of binder; 0.5 to 1.5 percent of acidity regulator; 0.01 to 0.07 percent of penetrating agent; 0.006 percent to 0.01 percent of bactericide; 86.92-94.784% of water. The electronic cloth made of the glass fiber electronic cloth slurry can effectively improve fluffy feeling of the electronic cloth, improve width of warp yarn, reduce air permeability of the electronic cloth, improve impregnation performance, guarantee enough lubricating performance and bundling performance of the yarn in a weaving process, and reduce cloth cover defects.)

1. The glass fiber electronic cloth slurry is characterized by comprising the following components in percentage by weight:

filling agent: 3.0 to 7.0 percent

Film-forming agent: 1.0 to 3.0 percent

Adhesive: 0.7 to 1.5 percent

Acidity regulator: 0.5 to 1.5 percent

Penetrant: 0.01 to 0.07 percent

And (3) bactericide: 0.006-0.01 percent

Water: 86.92-94.784 percent.

2. The slurry according to claim 1, characterized by comprising the following components in the following amounts expressed in weight percent:

filling agent: 4.0 to 6.0 percent

Film-forming agent: 1.5 to 2.5 percent

Adhesive: 0.8 to 1.2 percent

Acidity regulator: 0.8 to 1.2 percent

Penetrant: 0.03 to 0.05 percent

And (3) bactericide: 0.006-0.01 percent

Water: 89.04 to 92.864 percent.

3. The slurry of claim 1, wherein the filler is a modified starch.

4. The slurry as claimed in claim 3, wherein the filler is one or more of modified sweet potato flour, starch carbamate phosphate or modified mung bean flour.

5. The slurry according to claim 1, wherein the film forming agent is one or a mixture of more of refined emulsifying wax, aqueous polyurethane and isopropyl myristate; the binder is one or a mixture of more of polyacrylamide, polyacrylate or phenolic resin.

6. The slurry according to claim 1, wherein the penetrating agent is one or a mixture of dioctyl sodium sulfosuccinate, diethyl hexyl sulfosuccinate sodium salt or modified silicone oil.

7. The slurry of claim 1, wherein the biocide is a non-oxidizing biocide; the acidity regulator is acid.

8. The method for preparing the slurry according to any one of claims 1 to 7, comprising the following steps:

1S: preparing 1 container, and putting the acidity regulator and normal-temperature water into the container to be stirred and dispersed to obtain an aqueous solution containing the acidity regulator, wherein the usage amount of the normal-temperature water accounts for 40-70% of the total water amount;

2S: adding a filling agent into the aqueous solution obtained in the step 1S, heating to a first preset temperature, keeping the temperature for a preset time, and cooling to a second preset temperature to obtain a solution containing the filling agent;

3S: dissolving the film forming agent in a small amount of water to form a film forming agent emulsion, wherein the amount of the water accounts for 5-10% of the total water amount;

4S: and (4) sequentially adding the film-forming agent emulsion in the step (3), the binder, the penetrating agent and the bactericide into the solution in the step (2), then supplementing the rest water, and stirring uniformly.

9. Glass fibers produced by coating the slurry of any one of claims 1 to 7.

10. Use of the paste according to any one of claims 1 to 7 in the field of electronic cloth production.

Technical Field

The application relates to the technical field of glass fiber manufacturing, in particular to the technical field of glass fiber electronic cloth production, and specifically relates to a slurry capable of reducing air permeability of glass fiber electronic cloth, and a preparation method and application thereof.

Background

The glass fiber electronic cloth is formed by interweaving glass fiber electronic yarns in a warp-weft mode. In the weaving process, high-speed friction is generated between warp yarns and weft yarns, drop wires, heddles, reeds and the like, and the yarns are easy to have various abnormal cloth cover qualities such as elastic warps, warp fluffing, broken warps and the like. In order to improve the wear resistance of the warp, a layer of sizing agent is coated on the warp in the warping or warp combining stage of the glass fiber electronic cloth so as to improve the wear resistance of the yarn.

At present, the conventionally used sizing agent has low production cost, stable viscosity, strong adhesion to warp, high strength and strong wear resistance after sizing the warp, and is easy to size and desize.

For example, the invention patent of Chinese invention publication No. CN 108726897A, named as a secondary size for electronic grade glass fiber yarn, sized glass fiber yarn and corresponding glass fiber cloth, discloses a secondary size for electronic grade glass fiber yarn, and the secondary size obtained by researching the matching use of polyvinyl alcohol, waterborne polyurethane, polyethylene glycol and lubricant can not only protect warp yarns to meet the requirements of high-speed weaving process, but also has the performance characteristics of easy desizing, less residual fat after thermal burning, and the like.

The invention discloses a textile size and a preparation method thereof, wherein the Chinese publication number is CN 106480728A, the name is an invention patent of the textile size and the preparation method thereof. The sizing agent comprises a main material and an auxiliary agent, and the mass percentage of each component in the textile sizing agent is as follows: 82-88% of main material and 12-18% of auxiliary agent; the main materials comprise nano silicon dioxide modified starch, pea starch, phosphate starch, acrylic acid, butyl acrylate, acrylamide, sodium sulfamate, diphenylmethane and protein amino acid; the auxiliary agent comprises methanol, 2-naphthol, monochloroacetic acid and NaOH, and the yarn sized by the textile size has stable performance and enhanced strength and wear resistance.

However, the sizing agent disclosed above has too large wrapping force on warp yarns in the production and application process, too small gaps inside yarn bundles, too small yarn width and insufficient yarn looseness, so that the air permeability of the glass fiber electronic cloth is too large, and the resin impregnation in the subsequent production and processing process of downstream customers is not facilitated.

Therefore, in order to reduce the air permeability of the glass fiber electronic cloth, increase the width of the warp, improve the looseness of the warp and improve the resin permeability of downstream customers, a novel sizing agent needs to be developed, so that the glass fiber and the product thereof prepared by coating the glass fiber can obviously achieve the purpose in production, and the production and market requirements are better met.

Disclosure of Invention

The application aims at the problems and provides novel glass fiber electronic cloth slurry, and the glass fiber electronic cloth made of glass fibers produced by coating the slurry has the advantages of high yarn loosening degree, warp yarn line width, low electronic cloth air permeability and the like.

According to one aspect of the application, a glass fiber electronic cloth sizing agent is provided, and comprises the following components in percentage by weight:

filling agent: 3.0 to 7.0 percent

Film-forming agent: 1.0 to 3.0 percent

Adhesive: 0.7 to 1.5 percent

Acidity regulator: 0.5 to 1.5 percent

Penetrant: 0.01 to 0.07 percent

And (3) bactericide: 0.006-0.01 percent

Water: 86.92-94.784 percent.

Preferably, the content of each component is expressed by weight percent as follows:

filling agent: 4.0 to 6.0 percent

Film-forming agent: 1.5 to 2.5 percent

Adhesive: 0.8 to 1.2 percent

Acidity regulator: 0.8 to 1.2 percent

Penetrant: 0.03 to 0.05 percent

And (3) bactericide: 0.006-0.01 percent

Water: 89.04 to 92.864 percent.

Preferably, the filler is modified starch; more preferably, the filler can be one or a mixture of modified sweet potato powder, carbamate phosphate starch or modified mung bean powder.

Preferably, the film forming agent is one or a mixture of more of refined emulsifying wax, waterborne polyurethane and isopropyl myristate.

Preferably, the binder is one or a mixture of several of polyacrylamide, polyacrylate or phenolic resin.

Preferably, the acidity regulator is an acid; more preferably, the acidity regulator is glacial acetic acid or/and oxalic acid.

Preferably, the penetrating agent is one or a mixture of more of dioctyl sodium sulfosuccinate, diethyl hexyl sulfosuccinate sodium salt or modified silicone oil.

Preferably, the bactericide is a non-oxidative bactericide, and more preferably, the bactericide is one or a mixture of more of isothiazolinone, tebuconazole and pyraclostrobin.

The filler has the functions of filling gaps inside the yarn bundles and improving the loose degree of the yarn bundles. Preferably, the filler described herein is a starch-based filler. Starch is an organic high molecular substance formed by polymerization of glucose units. In the sizing process, hydroxyl on a molecular chain can be effectively adsorbed on the surface of the glass fiber to fill gaps among the glass fibers; meanwhile, in the post-treatment high-temperature desizing process, a large amount of gas is released due to heating of starch, and the loosening degree of yarn bundles is improved. Preferably, the filler is one or a mixture of modified sweet potato powder, carbamate phosphate starch or modified mung bean powder. The filler used in the present application is, for example, modified sweet potato starch, and specifically, the molecular weight of the selected modified starch is up to millions, which not only can effectively fill the interior of the yarn, but also can increase the width of the warp yarn. The content of the starch-based filler used in the present invention is in the range of 3% to 7%, preferably 4% to 6%, more preferably 4.5% to 5.5%.

The film forming agent can effectively improve the wear resistance between the yarn and a mechanical part and reduce the powder falling problem in the weaving process. The film forming agent is preferably one or a mixture of more of refined emulsifying wax, waterborne polyurethane and isopropyl myristate. The film forming agent used in the present application is a refined emulsifying wax, specifically, the selected refined emulsifying wax is a 56# paraffin emulsion, a 58# paraffin emulsion or a 60# paraffin emulsion, the particle diameter of the wax emulsion is 5-10 micrometers, and the wax emulsion can be adhered to the surface of the slurry after being dried to form a smooth protective film. The content range of the film forming agent used in the present application is 1.0% to 3.0%, preferably 1.5% to 2.5%, and more preferably 1.8% to 2.2%.

In order to ensure the smoothness of the weaving process and reduce the defects of the cloth cover, certain tension needs to be given to the warp yarns. In order to improve the strength of the yarn and avoid the quality problems of fuzzing and the like caused by breakage of individual single fibers after being subjected to tension, the bundling property of the yarn needs to be improved and the uniform stress of the yarn is ensured, so that the sizing agent further comprises a binder. Preferably, the binder is one or a mixture of several of polyacrylamide, polyacrylate or modified phenolic resin. The binder is polyacrylamide, a large number of amide groups are contained in polyacrylamide molecular chains, and a high-strength net-shaped winding structure can be formed after drying, so that the bundling property and strength of yarns are improved, and the occurrence of fluffing is reduced. The content range of the binder used in the present application is 0.7% to 1.5%, preferably 0.8% to 1.2%.

In order to improve the stability of the slurry, avoid self-aggregation of the slurry solution in water, increase the viscosity of the slurry and influence the sizing effect, the pH value of the slurry needs to be controlled within a proper range, and therefore, the slurry component also comprises an acidity regulator. Preferably, the acidity regulator herein is an acid; more preferably, the acidity regulator is glacial acetic acid or/and oxalic acid. Illustratively, the acidity regulator is glacial acetic acid. The content range of the acidity regulator used in the present application is 0.5% to 1.5%, preferably 0.8% to 1.2%.

With the increasing production efficiency, the warping speed of the yarn is faster and faster, and the retention time of the yarn in the size box is gradually shortened. Therefore, the application needs to introduce a high-efficiency penetrant to enable the size to quickly and sufficiently permeate into the yarn. Preferably, the penetrating agent used in the application is one or a mixture of more of dioctyl sodium sulfosuccinate, diethyl hexyl sulfosuccinate sodium salt or modified silicone oil; illustratively, the osmotic agent is dioctyl sodium sulfosuccinate. The content range of the penetrant used in the present application is 0.01% to 0.07%, preferably 0.03% to 0.05%.

Various microorganisms are easy to breed in the storage process of the beam, so that the beam is mildewed and affects the quality of the yarn. Therefore, the slurry composition of the present application further comprises a proper amount of a bactericide. Preferably, the bactericide described herein is a non-oxidizing bactericide; more preferably, the non-oxidative bactericide is one or a mixture of more of isothiazolinone, tebuconazole and pyraclostrobin. Illustratively, the bactericide is tebuconazole. The content range of the bactericide used in the application is 0.006% -0.01%.

The role of the water in this application is to disperse the components of the slurry, which is preferably deionized water.

According to a second aspect of the present application, there is provided a preparation method of the glass fiber electronic cloth paste, the preparation method comprising the steps of:

1S: preparing 1 container, and putting the acidity regulator and normal-temperature water into the container to be stirred and dispersed to obtain an aqueous solution containing the acidity regulator, wherein the usage amount of the normal-temperature water accounts for 40-70% of the total water amount;

2S: adding a filling agent into the aqueous solution obtained in the step 1S, heating to a first preset temperature, keeping the temperature for a preset time, and cooling to a second preset temperature to obtain a solution containing the filling agent;

3S: dissolving the film forming agent in a small amount of water to form a film forming agent emulsion, wherein the amount of the water accounts for 5-10% of the total water amount;

4S: sequentially adding the film-forming agent emulsion in the step 3S, the binder, the penetrating agent and the bactericide into the solution in the step 2S, then supplementing the rest water, and uniformly stirring;

wherein the first preset temperature in the step 2S is 70-90 ℃; the preset time is 20-40 min; the second predetermined temperature is 50-70 ℃.

According to a third aspect of the present application, there is provided a glass fiber product produced by coating the glass fiber electronic cloth paste.

According to a fourth aspect of the application, the application of the glass fiber electronic cloth slurry in the field of electronic cloth production is provided, and the slurry can be used for producing glass fiber electronic cloth with low air permeability.

The application has the following beneficial effects:

based on a large amount of laboratory research and production application, the proportion of the sizing agent for reducing the air permeability of the glass fiber electronic cloth is prepared, and the yarns are filled by selecting a proper filling agent; the friction force of the yarn to mechanical parts is reduced by matching with a proper film forming agent; the appropriate adhesive is matched, so that the bundling property and the strength of the yarn are improved; the proper penetrating agent is matched, so that the sizing agent can quickly and fully penetrate into the yarn; meanwhile, the acidity regulator and the bactericide are added to maintain the stability of the slurry performance. In a word, the glass fiber electronic cloth size can effectively improve the yarn width of the glass fiber electronic cloth, reduce the air permeability of the glass fiber electronic cloth, and simultaneously ensure that the yarns have enough lubricating property and bundling property in the weaving process, thereby reducing the generation of cloth cover defects.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described clearly and completely in conjunction with the specific embodiments of the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. 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 scope of protection of the present application. 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 specific formulations of the glass fiber electronic cloth slurry of the present application in examples 1 to 10 are further shown in Table 1. Wherein, the content of each component of the glass fiber electronic cloth sizing agent is expressed by weight percentage.

TABLE 1

Components	Example 1	Example 2	Example 3	Example 4	Example 5
						Filler	3	6	7	5	4
Film forming agent	1	2.5	3	2	1.5
						Binder	0.7	1.2	1.5	1.1	0.8
Acidity regulator	0.5	1.2	1.5	1	0.8
						Penetrant	0.01	0.05	0.07	0.04	0.03
Bactericide	0.006	0.01	0.01	0.008	0.006
						Water (W)	94.784	89.04	86.92	90.852	92.864

TABLE 1 (preface)

In the embodiments 1-5, the filler is modified sweet potato powder; the film forming agent is 60# paraffin emulsion; the binder is polyacrylamide; the acidity regulator is glacial acetic acid; the penetrating agent is sodium dioctyl sulfosuccinate; the bactericide is isothiazolinone;

in examples 6 to 8, the filler was carbamate phosphate starch; the film forming agent is waterborne polyurethane; the binder is polyacrylate; the acidity regulator is oxalic acid; the penetrating agent is sodium dioctyl sulfosuccinate; the bactericide is tebuconazole;

in examples 9 to 10 of the present application, the filler was modified mung bean flour; the film forming agent is isopropyl myristate; the binder is polyacrylate; the acidity regulator is glacial acetic acid and oxalic acid; the penetrating agent is sodium dioctyl sulfosuccinate; the bactericide is pyraclostrobin.

The preparation method of the embodiment 1-5 comprises the following steps:

1S: preparing 1 container, and putting the acidity regulator and normal-temperature water into the container to be stirred and dispersed to obtain an aqueous solution containing the acidity regulator, wherein the water accounts for 50% of the total water;

2S: adding a filler into the aqueous solution obtained in the step 1S, heating to 80 ℃, keeping the temperature for 25min, and cooling to 60 ℃ to obtain a solution containing the filler;

3S: dissolving the film forming agent in a small amount of water to form a film forming agent emulsion, wherein the amount of the water accounts for 10% of the total water amount;

4S: and (4) sequentially adding the film-forming agent emulsion in the step (3), the binder, the penetrating agent and the bactericide into the solution in the step (2), then supplementing the rest water, and stirring uniformly.

The preparation method of the embodiment 6-10 comprises the following steps:

1S: preparing 1 container, and putting the acidity regulator and normal-temperature water into the container to be stirred and dispersed to obtain an aqueous solution containing the acidity regulator, wherein the water accounts for 60% of the total water;

2S: adding a filling agent into the aqueous solution obtained in the step 1S, heating to 70 ℃, keeping the temperature for 35min, and then cooling to 50 ℃ to obtain a solution containing the filling agent;

3S: dissolving the film forming agent in a small amount of water to form a film forming agent emulsion, wherein the amount of the water accounts for 5 percent of the total water amount;

4S: and (4) sequentially adding the film-forming agent emulsion in the step (3), the binder, the penetrating agent and the bactericide into the solution in the step (2), then supplementing the rest water, and stirring uniformly.

It should be noted that: the specific types and contents of the selected components do not limit the protection scope of the present application.

In order to further illustrate the beneficial effects of the application, two formulas of the sizing agent for the electronic cloth (comparative example 1 and comparative example 2) are selected as comparative examples, and the content of each component in the comparative examples 1-2 is expressed as follows:

comparative example 1:

nano silicon dioxide modified starch: 3.3 percent of

Pea starch: 1.3 percent of

Phosphate starch: 0.4 percent

Acrylic acid: 0.8 percent

Butyl acrylate: 0.5 percent

Sodium sulfamate: 0.7 percent

Diphenylmethane: 1.1 percent

Protein amino acid: 0.6 percent

Methanol: 0.82 percent

2-naphthol: 0.1 percent of

Monochloroacetic acid: 0.05 percent

NaOH：0.03％

Deionized water: 90.3 percent.

Comparative example 2:

modified sweet potato powder: 2 percent of

60# Paraffin emulsion: 4 percent of

Polyacrylamide: 0.3 percent of

Glacial acetic acid: 0.1 percent of

Sodium dioctyl sulfosuccinate: 0.1 percent of

Isothiazolinone: 0.03 percent

Deionized water: 93.47 percent.

The application carries out comparative tests on the performances of the examples 1-10 and the comparative examples 1-2, and the test method comprises the following steps:

the slurries of examples 1 to 10 and comparative examples 1 to 2 were coated on the produced products, respectively, and the temperature of the slurry tank was 65 ℃, the inlet tension of the slurry tank was 170cN, the outlet tension of the oven was 280cN, the dry partition tension was 500N, the head take-up tension was 650cN, and the single yarn tension was 10g during the production process. The produced products were subjected to performance tests, and the test results are shown in table 2.

TABLE 2 Performance test results of examples 1 to 10 and comparative examples 1 to 2

TABLE 2 (CONTINUOUS) PERFORMANCE TEST STRUCTURE FOR EXAMPLES AND COMPARATIVE EXAMPLES

As can be seen from Table 2, the average air permeability of the electronic cloth prepared by the glass fiber electronic cloth paste is reduced to 2cm³/cm²The ratio of the water to the water is less than s. And the fabric has obvious advantages in the aspects of improving the warp fuzzing of the cloth surface, increasing the width of warp yarn and shortening the impregnation time, wherein the performance of the fabric is optimal particularly in the embodiment 4.

In conclusion, the glass fiber woven electronic cloth produced by coating the glass fiber electronic cloth slurry can effectively improve the yarn width of the glass fiber electronic cloth, reduce the air permeability of the glass fiber electronic cloth, ensure that the yarn has sufficient lubricating performance and bundling performance in the weaving process, reduce the generation of cloth cover defects, and simultaneously shorten the time for the slurry to be soaked into the yarn.

Various technical features of the above-mentioned embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features of the above-mentioned embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present disclosure should be considered as being described in the present specification.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.