CN116065379A - Desizing liquid and desizing method for ultrathin glass fiber electronic cloth - Google Patents
Desizing liquid and desizing method for ultrathin glass fiber electronic cloth Download PDFInfo
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- CN116065379A CN116065379A CN202310249235.3A CN202310249235A CN116065379A CN 116065379 A CN116065379 A CN 116065379A CN 202310249235 A CN202310249235 A CN 202310249235A CN 116065379 A CN116065379 A CN 116065379A
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- desizing
- glass fiber
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
- D06L1/14—De-sizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
An ultra-thin glass fiber electronic cloth desizing and desizing method belongs to the technical field of glass fiber desizing. Desizing methods of the prior art, which burn off desizing and other desizing, may result in fabric wrinkling and affect fabric quality. The composition of the invention comprises, by weight, 10-17% of HCl, 5-8% of sodium peroxide, 10-15% of potassium permanganate and the balance of water. The ultra-thin characteristic of ultra-thin glass fiber electronic cloth is utilized, hydrochloric acid is adopted to match potassium permanganate, so that the ultra-thin glass fiber electronic cloth is easier to fully soak, the removal efficiency is higher, and multiple desizing steps are avoided. The phenomenon that the ultrathin glass fiber electronic cloth is wrinkled when passing through a plurality of rollers or ovens is avoided, and the quality of the cloth cover is improved.
Description
Technical Field
An ultra-thin glass fiber electronic cloth desizing and desizing method belongs to the technical field of glass fiber desizing.
Background
In order to reduce the possibility of warp fuzzing in weaving of the electronic cloth, a layer of sizing agent needs to be coated on the surface of the warp as a protective film, so that the permeability with resin can be influenced when the PCB copper-clad plate is manufactured, and the sizing agent needs to be burnt out before the electronic cloth passes through the coupling agent treatment liquid.
In the prior art, most of the slurry is burnt out at a high temperature of 420 ℃ generally by means of heat energy generated by natural gas combustion, but the desizing effect is not ideal due to non-uniformity of high-temperature heating. 104. 106, 1037, which are also called ultrathin glass fiber electronic cloth due to the ultrathin property of the glass fiber cloth, the light and thin ultrathin electronic cloth is easy to flutter when passing through a ceramic fiber board oven, so that the electronic cloth is wrinkled when passing through more guide rollers or winding, and the quality of the cloth is seriously affected; in addition, the ultrathin glass fiber electronic cloth is more difficult to desize due to finer cloth surface gaps or holes, the desizing efficiency is further reduced, and therefore more guide rollers are needed to pass, and the probability of cloth surface flaws is higher.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the desizing and desizing method for the ultrathin glass fiber electronic cloth overcomes the problems of low desizing efficiency and large cloth cover damage in the prior art, and is high in desizing efficiency, uniform in desizing and low in cloth cover damage.
The technical scheme adopted for solving the technical problems is as follows: the desizing liquid of the ultrathin glass fiber electronic cloth is characterized in that: the components comprise 10-17 wt% of HCl, 5-8 wt% of sodium peroxide, 10-15 wt% of potassium permanganate and the balance of water according to the weight ratio; the hydrochloric acid is from aqueous solution of hydrochloric acid.
The principle is as follows: the starch slurry on the surface of the glass fiber electronic cloth firstly generates dextrin under the action of dilute hydrochloric acid, and the dextrin is continuously hydrolyzed in hot water to generate maltose; the maltose contains aldehyde groups and hydroxyl groups, and potassium permanganate is used as a strong oxidant to react with the maltose to generate carbon dioxide, manganese dioxide and potassium manganate so as to realize desizing.
In the prior art, other desizing liquid mostly adopts the principle that alkali or other swelling agents are adopted to make the swelling foam of the surface sizing agent of the glass fiber cloth separate, but the experiment of the invention finds that because of the ultrathin characteristic of the ultrathin glass fiber electronic cloth, the gaps or holes in the cloth surface are finer, and the holes or gaps in the cloth surface are easier to be blocked after the starch of a macromolecular chain is swelled and foamed, the desizing liquid is not easy to fully enter the holes, so that the desizing difficulty of the ultrathin glass fiber electronic cloth is higher, and more complicated guide rollers and more desizing procedures or times are needed to ensure the desizing effect. The desizing liquid of the invention utilizes the ultrathin property of ultrathin glass fiber electronic cloth, adopts HCl to be matched with potassium permanganate, carries out desizing in a mode of direct hydrolysis and chain breaking, avoids the swelling process of starch, is easier to fully soak, has higher removal efficiency, and avoids multiple desizing steps. After the desizing liquid is soaked, the surface sizing agent of the glass fiber cloth can be sufficiently removed only by one desizing roller, so that the phenomenon that the ultrathin glass fiber electronic cloth is wrinkled when passing through a plurality of rollers or ovens is avoided, and the cloth cover quality is improved.
Preferably, the HCl content is 12-15 wt%. As the first step of reaction of the principle of the invention, the HCl needs to be fully soaked and contacted with the starch on the cloth surface in a short time, so that the HCl content with higher concentration is selected, the volatilization speed is too high when the HCl content is too high, the loss is larger at high temperature, and the preferable HCl content has the highest desizing efficiency.
Preferably, the content of the potassium permanganate is 13.5-15 wt%.
The oxidation of potassium permanganate can influence cloth cover intensity, and the preferable potassium permanganate content can avoid ultrathin glass fiber electronic cloth oxidation back surface too soft and more easily take place the fold phenomenon, can guarantee the quick, the abundant decomposition of maltose simultaneously, guarantees the desizing effect.
Preferably, the weight ratio of the HCl to the potassium permanganate is 1:1. on one hand, the fact that HCl has certain volatilization characteristics and is consumed quickly in the soaking process needs proper excess is considered, and on the other hand, the optimal desizing effect is achieved under the content ratio of HCl to potassium permanganate.
Preferably, the HCl is derived from 60wt% of dilute hydrochloric acid, and the content of the 60wt% of dilute hydrochloric acid in the desizing liquid is 20-25 wt%.
Preferably, the pH is 6-7.
A desizing method of ultrathin glass fiber electronic cloth is characterized by comprising the following steps of: the method comprises the following steps:
1) Desizing the ultrathin glass fiber electronic cloth;
2) Desizing liquid is heated to 70-90 ℃;
3) And (5) desizing the ultrathin glass fiber electronic cloth by a desizing roller after soaking the ultrathin glass fiber electronic cloth.
The desizing liquid needs higher temperature because of the high-temperature hydrolysis reaction of starch, and can ensure the mixing efficiency of hydrochloric acid, a catalyst and an oxidant at the preferable temperature, thereby improving the desizing effect, shortening the desizing time and reducing the hydrochloric acid loss.
Preferably, the desizing configuration method of the ultrathin glass fiber electronic cloth comprises the following steps:
1) Mixing HCl and water, and adding sodium peroxide for dissolution;
2) Adding potassium permanganate, stirring and dissolving.
Preferably, the desizing liquid in the step 2) is heated to 75-85 ℃.
Compared with the prior art, the invention has the following beneficial effects: the ultra-thin characteristic of ultra-thin glass fiber electronic cloth is utilized, hydrochloric acid is adopted to match potassium permanganate, desizing is carried out in a mode of direct hydrolysis and then chain breaking, the swelling process of starch is avoided, the starch is easier to fully soak, the removal efficiency is higher, and multiple desizing is avoided. After the desizing liquid is soaked, the surface sizing agent of the glass fiber cloth can be sufficiently removed only by one desizing roller, so that the phenomenon that the ultrathin glass fiber electronic cloth is wrinkled when passing through a plurality of rollers or ovens is avoided, and the cloth cover quality is improved.
Detailed Description
The present invention will be further described with reference to the following examples, with example 1 being the best mode of carrying out the invention.
Example 1
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 25wt% of dilute hydrochloric acid (with the concentration of 60 wt%) and 7wt% of sodium peroxide, 15wt% of potassium permanganate and 53wt% of water according to the weight proportion.
A desizing method of ultrathin glass fiber electronic cloth comprises the following steps:
1) Desizing liquid is prepared according to the following proportion: slowly adding dilute hydrochloric acid into water along the side of the slurry tank, and stirring for 8min by a stirrer; adding sodium peroxide, and stirring for 4min; adding potassium permanganate, stirring for 15min, and detecting the pH of the desizing liquid to be 6.5;
2) Heating to 80 ℃, and controlling the temperature change interval to be 75-85 ℃ through temperature monitoring;
3) After the ultrathin glass fiber electronic cloth is soaked and desized, desizing is performed through a desizing roller; the soaking desizing is that ultrathin glass fiber electronic cloth passes through a desizing groove from the position between two cloth rolls, and the time of the cloth in the desizing is 20s.
Example 2
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 20wt% of dilute hydrochloric acid (with the concentration of 60 wt%) by weight, 8wt% of sodium peroxide, 12wt% of potassium permanganate and 58wt% of water according to the weight proportion, and the pH of the desizing liquid is detected to be 7.
The desizing method of the ultrathin glass fiber electronic cloth is the same as that of the embodiment 1, and is characterized in that the heating temperature of the step 2) is set to be 85 ℃, and the temperature change interval is controlled to be 80-90 ℃ through temperature monitoring.
Example 3
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 28wt% of dilute hydrochloric acid (with the concentration of 60 wt%) by weight, 5wt% of sodium peroxide, 10wt% of potassium permanganate and 57wt% of water by weight, and the pH of the desizing liquid is detected to be 6.
The desizing method of the ultrathin glass fiber electronic cloth is the same as that of the embodiment 1, and is characterized in that the heating temperature of the step 2) is set to be 75 ℃, and the temperature change interval is controlled to be 70-80 ℃ through temperature monitoring.
Example 4
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 17wt% of dilute hydrochloric acid (with the concentration of 60 wt%) by weight, 8wt% of sodium peroxide, 10wt% of potassium permanganate and 65wt% of water.
The desizing method of the ultrathin glass fiber electronic cloth is the same as in the embodiment 1.
Comparative example 1
A desizing method of ultrathin glass fiber electronic cloth adopts a special desizing unit, the electronic cloth passes through the middle of two ceramic fiber plates, the ceramic fiber plates are provided with heat energy generated by natural gas combustion, the ceramic fiber plates are heated, most of sizing agent on glass fibers is burned out, the temperature is controlled to be 390-420 ℃, and the cloth burning-out time per unit length is 20s.
Comparative example 2
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 15wt% of dilute hydrochloric acid (with the concentration of 60 wt%) by weight, 7wt% of sodium peroxide, 15wt% of potassium permanganate and 63wt% of water.
Comparative example 3
The desizing liquid of the ultrathin glass fiber electronic cloth comprises the following components in parts by weight of 30% by weight of dilute hydrochloric acid (with the concentration of 60% by weight), 7% by weight of sodium peroxide, 15% by weight of potassium permanganate and 48% by weight of water.
Comparative example 4
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 25wt% of dilute hydrochloric acid (with the concentration of 60 wt%) by weight, 7wt% of sodium peroxide, 9wt% of potassium permanganate and 59wt% of water.
Comparative example 5
The desizing liquid of the ultrathin glass fiber electronic cloth comprises 25wt% of dilute hydrochloric acid (with the concentration of 60 wt%) and 7wt% of sodium peroxide, 16wt% of potassium permanganate and 52wt% of water according to the weight proportion.
Performance testing
And (3) performing performance test on the desizing liquid and the desizing method, and testing the effect of the desized glass fiber electronic cloth surface.
The ultra-thin glass fiber electronic cloths of the models 106, 104 and 1037 were desized by the desizing and desizing methods of the ultra-thin glass fiber electronic cloths of the example 1 and the comparative example 1, and the test results are shown in the following table 1.
Table 1 results of performance tests for example 1 and comparative example 1
The ultra-thin glass fiber electronic cloth model 106 was desized by the desizing and desizing methods of the ultra-thin glass fiber electronic cloths of examples 2 to 4 and comparative examples 2 to 5, and the test results are shown in table 2 below.
Table 2 results of performance testing of other examples and comparative examples
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The desizing liquid of the ultrathin glass fiber electronic cloth is characterized in that: the components comprise, by weight, 10-17% of HCl, 5-8% of sodium peroxide, 10-15% of potassium permanganate and the balance of water.
2. The desizing of the ultra-thin fiberglass electronic cloth of claim 1, wherein: the content of HCl is 12-15wt%.
3. The desizing of the ultra-thin fiberglass electronic cloth of claim 1, wherein: the content of the potassium permanganate is 13.5-15 wt%.
4. The desizing of the ultra-thin fiberglass electronic cloth of claim 1, wherein: the weight ratio of the HCl to the potassium permanganate is 1:1.
5. the desizing of the ultra-thin fiberglass electronic cloth of claim 1, wherein: the HCl is derived from 60wt% of dilute hydrochloric acid, and the content of the 60wt% of dilute hydrochloric acid in the desizing liquid is 20-25 wt%.
6. The desizing of the ultra-thin fiberglass electronic cloth of claim 1, wherein: the pH is 6 to 7.
7. A desizing method of ultrathin glass fiber electronic cloth is characterized by comprising the following steps of: the method comprises the following steps:
1) Desizing the ultrathin glass fiber electronic cloth according to any one of claims 1-6;
2) Desizing liquid is heated to 70-90 ℃;
3) And (5) desizing the ultrathin glass fiber electronic cloth by a desizing roller after soaking the ultrathin glass fiber electronic cloth.
8. The method for desizing ultra-thin glass fiber electronic cloth according to claim 7, wherein the method comprises the following steps: the desizing configuration method of the ultrathin glass fiber electronic cloth comprises the following steps:
1) Mixing HCl and water, and adding sodium peroxide for dissolution;
2) Adding potassium permanganate, stirring and dissolving.
9. The method for desizing ultra-thin glass fiber electronic cloth according to claim 7, wherein the method comprises the following steps: and step 2), heating the desizing liquid to 75-85 ℃.
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| CN116065379B CN116065379B (en) | 2023-06-02 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139357A (en) * | 1977-12-08 | 1979-02-13 | Ppg Industries, Inc. | Chemical desizing of fiber glass fabric |
| CN102733033A (en) * | 2011-04-07 | 2012-10-17 | 建滔（连州）玻璃纤维有限公司 | Production method for super-low-twisted electronic grade glass fiber cloth |
| CN102926183A (en) * | 2012-10-31 | 2013-02-13 | 上海宏和电子材料有限公司 | Application of assistant agent in electronic-grade glass fiber cloth desizing and desizing process thereof |
| CN104328579A (en) * | 2014-08-27 | 2015-02-04 | 安徽丹凤电子材料股份有限公司 | Preparation process of glass fiber cloth |
| CN106567249A (en) * | 2016-10-18 | 2017-04-19 | 建滔（连州）玻璃纤维有限公司 | Novel electronic grade glass fiber cloth pulp and production method thereof |
| CN109183385A (en) * | 2018-07-25 | 2019-01-11 | 重庆天勤材料有限公司 | Electronic-grade glass fiber cloth fabric fiber opening method |
| CN110258120A (en) * | 2019-07-25 | 2019-09-20 | 清远凯荣德玻璃纤维有限公司 | A kind of production method of electronic-grade glass fiber cloth |
| CN113957701A (en) * | 2021-10-25 | 2022-01-21 | 建滔(清远)电子材料有限公司 | Ultra-thin electronic grade glass fiber cloth water-soluble one-step desizing liquid and preparation method thereof |
| CN114622409A (en) * | 2022-02-17 | 2022-06-14 | 巨石集团有限公司 | Treating agent for glass fiber electronic cloth and preparation method and application thereof |
-
2023
- 2023-03-15 CN CN202310249235.3A patent/CN116065379B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139357A (en) * | 1977-12-08 | 1979-02-13 | Ppg Industries, Inc. | Chemical desizing of fiber glass fabric |
| CN102733033A (en) * | 2011-04-07 | 2012-10-17 | 建滔（连州）玻璃纤维有限公司 | Production method for super-low-twisted electronic grade glass fiber cloth |
| CN102926183A (en) * | 2012-10-31 | 2013-02-13 | 上海宏和电子材料有限公司 | Application of assistant agent in electronic-grade glass fiber cloth desizing and desizing process thereof |
| CN104328579A (en) * | 2014-08-27 | 2015-02-04 | 安徽丹凤电子材料股份有限公司 | Preparation process of glass fiber cloth |
| CN106567249A (en) * | 2016-10-18 | 2017-04-19 | 建滔（连州）玻璃纤维有限公司 | Novel electronic grade glass fiber cloth pulp and production method thereof |
| CN109183385A (en) * | 2018-07-25 | 2019-01-11 | 重庆天勤材料有限公司 | Electronic-grade glass fiber cloth fabric fiber opening method |
| CN110258120A (en) * | 2019-07-25 | 2019-09-20 | 清远凯荣德玻璃纤维有限公司 | A kind of production method of electronic-grade glass fiber cloth |
| CN113957701A (en) * | 2021-10-25 | 2022-01-21 | 建滔(清远)电子材料有限公司 | Ultra-thin electronic grade glass fiber cloth water-soluble one-step desizing liquid and preparation method thereof |
| CN114622409A (en) * | 2022-02-17 | 2022-06-14 | 巨石集团有限公司 | Treating agent for glass fiber electronic cloth and preparation method and application thereof |
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