CN117923810A - Electronic grade glass fiber super spun yarn slurry and preparation method and application thereof - Google Patents
Electronic grade glass fiber super spun yarn slurry and preparation method and application thereof Download PDFInfo
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- CN117923810A CN117923810A CN202311790455.3A CN202311790455A CN117923810A CN 117923810 A CN117923810 A CN 117923810A CN 202311790455 A CN202311790455 A CN 202311790455A CN 117923810 A CN117923810 A CN 117923810A
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- glass fiber
- spun yarn
- electronic grade
- grade glass
- fiber super
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 55
- 239000002002 slurry Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000007613 slurry method Methods 0.000 title description 2
- 238000004513 sizing Methods 0.000 claims abstract description 38
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 28
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 229920000881 Modified starch Polymers 0.000 claims abstract description 20
- 239000004368 Modified starch Substances 0.000 claims abstract description 20
- 235000019426 modified starch Nutrition 0.000 claims abstract description 20
- 229920001290 polyvinyl ester Polymers 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000009990 desizing Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002344 surface layer Substances 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 4
- 238000009941 weaving Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 6
- 238000002679 ablation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention provides electronic grade glass fiber super spun yarn slurry, and a preparation method and application thereof. The electronic grade glass fiber super spun yarn slurry comprises polyvinyl alcohol, polyvinyl ester, modified starch and pure water; wherein, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 5-15%, the mass content of polyvinyl ester is 1-5%, and the mass content of modified starch is 8-12%. The electronic grade glass fiber super spun yarn sizing agent can be well coated on the surface layer of sizing, and can better wrap raw yarns on an air jet loom so as to avoid yarn breakage and dispersion, thereby being beneficial to subsequent weaving production.
Description
Technical Field
The invention relates to the technical field of glass fibers, in particular to electronic grade glass fiber super spun yarn slurry and a preparation method and application thereof.
Background
At present, glass fiber electronic yarns are formed by twisting continuous glass filaments, and are woven to form electronic cloth, so that the electronic cloth is manufactured into Copper-clad plates (coppers CLAD LAMINATE) and then used for electronic industry products such as printed circuit boards (Printed Circuit Board). Due to the rapid development of the electronic industry market, the production of electronic grade glass fiber yarns in China continues to rapidly increase in recent years, and the electronic grade glass fiber yarns become the largest production country in the world.
The electronic grade glass fiber yarn adopts tank furnace drawing technology, molten glass flows into a bushing through a bushing production device (the bushing shape is similar to a trough-shaped container with a nozzle hole on a bottom plate), the bushing itself modulates glass liquid to a proper temperature through electric current heating and maintains enough uniform temperature distribution, the glass liquid flows out from a bushing on the bottom plate, and the glass liquid is drawn into continuous glass fiber yarn by a high-speed rotating wire drawing machine after flowing out from the bottom plate.
The glass fiber has the characteristics of chemical stability, electrical insulation, good strength and the like, and is mainly used as an electric insulation material, a reinforced material of glass fiber reinforced plastic and the like, but has the defects of brittleness, poor wear resistance and the like. The electronic yarn is a glass fiber high-end product, the technical barrier of the industry is extremely high, and the production process is extremely complex and severe. At present, the diameter of a conventional glass monofilament is 5-9 mu m, and the surface of a super fine electronic yarn cop with the diameter of the monofilament is 4-5 mu m is smooth, the strength is low, so that the sizing rate is required to be high; however, the sizing agent conventionally used for glass monofilaments cannot be well coated on the surface layer of the sizing yarn, which is unfavorable for the production and preparation of super fine electronic yarns.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide electronic grade glass fiber super spun yarn sizing agent, a preparation method and application thereof, wherein the sizing agent can be well coated on the surface layer of sizing yarn, and can better wrap raw yarn on an air jet loom so as to avoid yarn breakage and dispersion, thereby being beneficial to subsequent weaving production.
The invention provides electronic grade glass fiber super spun yarn slurry, which comprises polyvinyl alcohol, polyvinyl ester, modified starch and pure water; wherein, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 5-15%, the mass content of polyvinyl ester is 1-5%, and the mass content of modified starch is 8-12%.
Preferably, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 8-12%, the mass content of polyvinyl ester is 2-4%, and the mass content of modified starch is 8-12%.
In the present invention, the volatile content of the polyvinyl alcohol is 5 to 6%. The polyvinyl alcohol with higher volatile components is selected and the sizing agent formula is adjusted, so that the polyvinyl alcohol can be better coated on the surface layer of sizing yarns, the raw yarns can be better wrapped on an air jet loom, yarn breakage and dispersion are avoided, and the decomposition and desizing of a treatment section are facilitated. In addition, the viscosity of the polyvinyl alcohol is 2 to 7 mPas and the pH value is 6 to 7.
In the invention, the monofilament diameter of the electronic grade glass fiber super spun yarn is 4-5 mu m.
The invention also provides a preparation method of the electronic grade glass fiber super spun yarn slurry, which comprises the following steps:
s1: adding pure water into the slurry mixing cylinder for stirring;
s2: adding polyvinyl alcohol into a slurry mixing cylinder for stirring, and heating after complete dissolution;
s3: adding polyvinyl ester and modified starch into the sizing cylinder, continuously heating and preserving heat after the polyvinyl ester and the modified starch are completely dissolved, and obtaining the electronic grade glass fiber super spun yarn sizing agent.
Specifically, in the step S2, the temperature is raised to 60-70 ℃; in the step S3, the temperature is raised to 100-120 ℃, and the temperature is kept for 4-6 hours.
The invention also provides application of the electronic grade glass fiber super spun yarn slurry in preparation of electronic grade glass fiber super spun yarns.
The invention also provides a preparation method of the electronic grade glass fiber super spun yarn, which comprises the steps of performing continuous desizing and closed smoldering after the electronic grade glass fiber super spun yarn sizing agent is adopted for sizing; wherein the temperature during continuous desizing is 350-380 ℃; the temperature is 350-380 ℃ and the time is 30-50h when the pot is closed and braised.
Aiming at the special superfine and wear-resistant properties of the electronic grade glass fiber super spun yarn and the like, the sizing section has very strict process requirements on the electronic grade glass fiber super spun yarn; according to the invention, the sizing agent formula is optimized, so that sizing agent can be well coated on the surface layer of sizing yarn, and raw yarn can be better wrapped on an air-jet loom so as to avoid yarn breakage and dispersion, and sizing agent at the front section can be removed in the subsequent weaving production process, so that the desizing performance of the rear section process is ensured.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms also include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The electronic grade glass fiber super spun yarn slurry of the embodiment consists of polyvinyl alcohol, polyvinyl ester, modified starch and pure water; wherein, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 10 percent, the mass content of polyvinyl ester is 3 percent, the mass content of modified starch is 10 percent, and the balance is pure water; the polyvinyl alcohol used had a volatile content of 5.5%, a viscosity of 5 mPas and a pH of 6.5.
The preparation method of the electronic grade glass fiber super spun yarn slurry in the embodiment is as follows:
according to the composition of the sizing agent, adding pure water into a sizing cylinder for stirring, then adding polyvinyl alcohol for stirring, heating to 70 ℃ after complete dissolution, then adding polyvinyl ester and modified starch, continuously heating to 110 ℃ after complete dissolution, and preserving heat for 5 hours to obtain the electronic grade glass fiber super spun yarn sizing agent.
Example 2
The electronic grade glass fiber super spun yarn slurry of the embodiment consists of polyvinyl alcohol, polyvinyl ester, modified starch and pure water; wherein, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 8%, the mass content of polyvinyl ester is 2%, the mass content of modified starch is 8%, and the balance is pure water; the polyvinyl alcohol used had a volatile content of 5.5%, a viscosity of 5 mPas and a pH of 6.5.
The preparation method of the electronic grade glass fiber super spun yarn slurry in the embodiment is as follows:
according to the composition of the sizing agent, adding pure water into a sizing cylinder for stirring, then adding polyvinyl alcohol for stirring, heating to 60 ℃ after complete dissolution, then adding polyvinyl ester and modified starch, continuously heating to 120 ℃ after complete dissolution, and preserving heat for 4 hours to obtain the electronic grade glass fiber super spun yarn sizing agent.
Example 3
The electronic grade glass fiber super spun yarn slurry of the embodiment consists of polyvinyl alcohol, polyvinyl ester, modified starch and pure water; wherein, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 12%, the mass content of polyvinyl ester is 4%, the mass content of modified starch is 12%, and the balance is pure water; the polyvinyl alcohol used had a volatile content of 5.5%, a viscosity of 5 mPas and a pH of 6.5.
The preparation method of the electronic grade glass fiber super spun yarn slurry in the embodiment is as follows:
according to the composition of the sizing agent, adding pure water into a sizing cylinder for stirring, then adding polyvinyl alcohol for stirring, heating to 60 ℃ after complete dissolution, then adding polyvinyl ester and modified starch, continuously heating to 120 ℃ after complete dissolution, and preserving heat for 4 hours to obtain the electronic grade glass fiber super spun yarn sizing agent.
Example 4
Adopting the electronic grade glass fiber super spun yarn sizing agent of the embodiment 1 to carry out continuous desizing and closed smoldering after sizing in a conventional manner; wherein, the temperature during continuous desizing is 360 ℃, the temperature during closed smoldering is 360 ℃ and the time is 40h.
The ablation amount was measured after continuous desizing and closed smoldering, respectively, and the results are shown in Table 1.
Example 5
Adopting the electronic grade glass fiber super spun yarn sizing agent of the embodiment 2 to carry out continuous desizing and closed smoldering after sizing in a conventional manner; wherein, the temperature during continuous desizing is 350 ℃, the temperature during sealing smoldering is 350 ℃ and the time is 50h.
The ablation amount was measured after continuous desizing and closed smoldering, respectively, and the results are shown in Table 1.
Example 6
Adopting the electronic grade glass fiber super spun yarn sizing agent of the embodiment 3 to carry out continuous desizing and closed smoldering after sizing in a conventional manner; wherein, the temperature during continuous desizing is 380 ℃, the temperature during sealing smoldering is 380 ℃ and the time is 30h.
The ablation amount was measured after continuous desizing and closed smoldering, respectively, and the results are shown in Table 1.
Comparative example 1
The volatile content of the polyvinyl alcohol used for removal is 0.5%; the temperature at continuous desizing was 410 ℃; the procedure of example 4 was followed except that the temperature at the time of sealing was 410℃and the time was 70 hours.
The ablation amount was measured after continuous desizing and closed smoldering, respectively, and the results are shown in Table 1.
TABLE 1 detection results of ablation after continuous desizing and closed smoldering
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The electronic grade glass fiber super spun yarn slurry is characterized by comprising polyvinyl alcohol, polyvinyl ester, modified starch and pure water; wherein, the mass content of polyvinyl alcohol in the electronic grade glass fiber super spun yarn slurry is 5-15%, the mass content of polyvinyl ester is 1-5%, and the mass content of modified starch is 8-12%.
2. The electronic grade glass fiber super spun yarn slurry of claim 1, wherein the volatile content of the polyvinyl alcohol is 5-6%.
3. The electronic grade glass fiber super spun yarn slurry of claim 1, wherein the viscosity of the polyvinyl alcohol is 2-7 mpa.s and the pH value is 6-7.
4. The electronic grade glass fiber super spun yarn slurry of claim 1, wherein the monofilament diameter of the electronic grade glass fiber super spun yarn is 4-5 μm.
5. The method for preparing the electronic grade glass fiber super spun yarn slurry according to any one of claims 1 to 4, which is characterized by comprising the following steps:
s1: adding pure water into the slurry mixing cylinder for stirring;
s2: adding polyvinyl alcohol into a slurry mixing cylinder for stirring, and heating after complete dissolution;
s3: adding polyvinyl ester and modified starch into the sizing cylinder, continuously heating and preserving heat after the polyvinyl ester and the modified starch are completely dissolved, and obtaining the electronic grade glass fiber super spun yarn sizing agent.
6. The method according to claim 5, wherein in step S2, the temperature is raised to 60-70 ℃.
7. The preparation method according to claim 5, wherein in step S3, the temperature is raised to 100-120 ℃, and the temperature is kept for 4-6 hours.
8. Use of the electronic grade glass fiber super spun yarn slurry of any one of claims 1-4 in the preparation of electronic grade glass fiber super spun yarn.
9. The preparation method of the electronic grade glass fiber super spun yarn is characterized in that the electronic grade glass fiber super spun yarn sizing agent of any one of claims 1-4 is adopted for continuous desizing and closed smoldering after sizing; wherein the temperature during continuous desizing is 350-380 ℃.
10. The method according to claim 9, wherein the temperature at which the braising is closed is 350-380 ℃ for 30-50 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311790455.3A CN117923810A (en) | 2023-12-25 | 2023-12-25 | Electronic grade glass fiber super spun yarn slurry and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311790455.3A CN117923810A (en) | 2023-12-25 | 2023-12-25 | Electronic grade glass fiber super spun yarn slurry and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117923810A true CN117923810A (en) | 2024-04-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311790455.3A Pending CN117923810A (en) | 2023-12-25 | 2023-12-25 | Electronic grade glass fiber super spun yarn slurry and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117923810A (en) |
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2023
- 2023-12-25 CN CN202311790455.3A patent/CN117923810A/en active Pending
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