CN104109984A - Polyoxadiazole fiber paper based on polyoxadiazole fiber, and preparation method thereof - Google Patents
Polyoxadiazole fiber paper based on polyoxadiazole fiber, and preparation method thereof Download PDFInfo
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- CN104109984A CN104109984A CN201310129371.5A CN201310129371A CN104109984A CN 104109984 A CN104109984 A CN 104109984A CN 201310129371 A CN201310129371 A CN 201310129371A CN 104109984 A CN104109984 A CN 104109984A
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Abstract
The invention provides a polyoxadiazole fiber paper based on a polyoxadiazole fiber, and a preparation method thereof. The preparation method comprises the following steps: adding 0-60wt% of the polyoxadiazole fiber, 0-70wt% of a short terylene fiber and 0-0.05wt% of a dispersion assistant to water, and uniformly dispersing the above raw material to obtain a slurry; carrying out networking molding on the slurry, papermaking to obtain a wet paper sheet, dehydrating the wet paper sheet, squeezing, and drying; and carrying out press finishing molding on the dried wet paper sheet. The polyoxadiazole fiber paper compounded with an electric engineering film has the advantages of excellent dielectric strength, good high temperature resistance, good chemical stability and good adaptability, and is suitable for motors, electric appliances, and F and H grade electrical insulating materials.
Description
Technical field
The present invention relates to a kind of polyoxadiazole fibers paper and preparation method thereof, belong to fiber synthesized paper manufacturing technology field.
Background technology
Polyoxadiazole fibers belongs to heteroaromatic compounds, can under the hot conditions of 350 ℃, use, and is applicable to electrical equipment and electrical and F, H level electrically insulating material composite product, its technological process of production simply, does not need special installation, raw material is easy to get, and cost is low, easily realizes industrialization.
Polyoxadiazole fibers paper Shi polyoxadiazole fibers and pulp cause paper according to paper technology, through hot-forming, make again, through thering is good dielectric strength with electrician with the composite after Film laminated, good resistance to elevated temperatures, the advantage such as chemical stability and adaptability, as the insulating materials in electrical equipment and electrical.High temperature resistant synthetic-fibre insulating paper mainly contains du pont company and produces Nomex paper (Nomex), but price is very high.After polyoxadiazole fibers paper and films for electrical purposes are compound, can be used for liner insulation, turn-to-turn insulation and slot insulation in electrical equipment and electrical, this product has that heat resistance is good, excellent electrical properties and the advantage such as cheap, the needs that adapt to China F, H level motor insulation material, meet the requirements of industrial department to heat resistance fiber such as high temperature resistant electrically insulating material and national defence, metallurgy, transportation.And can partly replace Nomex paper, and cheap, saved the energy, there is good development prospect.
In addition, adopt existing technologies because polyoxadiazole fibrid is very long sometimes, and inhomogeneous, there is strong hydrophobic performance, in the process of washing dehydration, fiber is easily intertwined, be difficult to spread out, have a strong impact on the performance of polyoxadiazole fibers, the invention provides a kind of making beating and discongest and chemical assistant method, it is well dispersed in water, and prevents from reassociating between fiber.
Summary of the invention
The object of this invention is to provide and take the preparation method that polyoxadiazole fibers is raw material polyoxadiazole fibers paper a kind of preparation, overcome prior art deficiency, the dispersiveness of paper making pulp polyoxadiazole fibers is increased.
To achieve these goals, the invention provides a kind of method of preparing polyoxadiazole fibers paper, said method comprising the steps of:
I) prepare slurry, respectively polyoxadiazole fibers and other components are disperseed, are mixed slurry;
Ii) net forming copy paper on slip, obtain l Water Paper page;
Iii) will obtain the dehydration of l Water Paper page, squeezing, dry;
Iv) dried page carries out press polish moulding.
Wherein, in step I) in, polyoxadiazole fibrid is discongested to making beating and process, and add micro-dispersant, conventional dispersant has hydroxyl silicones, silane coupler, sodium carboxymethylcellulose etc., and Shi polyoxadiazole fibers is well dispersed in water, and prevents from reassociating between fiber.Dispersant mainly contains three effects to the fiber in water: the coating lubrication 1), to fiber surface; 2), the thickening power to decentralized medium; 3), change the electric potential of fiber.Beating degree to 42 to be pulled an oar ~ 48 complete this step operation.
At step I i) in adopt to adopt oblique net forming paper machine to carry out upper net forming copy paper.
At step I ii) in adopt two one press dewatering of blanket of two rollers, 100 ~ 110 ℃ of bake out temperatures.
Step I v) in calender pressure 0.3MPa, 15 ~ 20 ms/min of speed of a motor vehicle limits, 15 meters ~ 20 ms/min of press polish speed.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1: process chart as shown in Figure 1, with beater, polyoxadiazole fibers, terylene staple fiber are dispersed in the aqueous solution, Qi Zhong polyoxadiazole fibers 35%(percentage by weight), terylene staple fiber 65%(percentage by weight), in the aqueous solution, add the concentration of sodium carboxymethylcellulose (CMC) 0.005%(in the aqueous solution) as dispersing aid, obtain finely dispersed suspension.Two kinds of liquid are mixed, obtain the slurry of concentration 0.02%; Approach flow moulding copy paper, form l Water Paper page; By acquisition l Water Paper page squeeze, dewatered drying, bake out temperature is 100 ℃; Dried paper industry is carried out press polish, calender pressure 0.3MPa, and 15 ~ 20 ms/min of speed of a motor vehicle limits, 15 meters ~ 20 ms/min of press polish speed, obtain finished paper.
Embodiment 2: process chart as shown in Figure 1, with beater, polyoxadiazole fibers, terylene staple fiber are dispersed in the aqueous solution, Qi Zhong polyoxadiazole fibers 40%(percentage by weight), terylene staple fiber 60%(percentage by weight), in the aqueous solution, add the concentration of sodium carboxymethylcellulose (CMC) 0.01%(in the aqueous solution) as dispersing aid, obtain finely dispersed suspension.Two kinds of liquid are mixed, obtain the slurry of concentration 0.03%; Approach flow moulding copy paper, form l Water Paper page; By acquisition l Water Paper page squeeze, dewatered drying, bake out temperature is 100 ℃; Dried paper industry is carried out press polish, calender pressure 0.3MPa, and 15 ~ 20 ms/min of speed of a motor vehicle limits, 15 meters ~ 20 ms/min of press polish speed, obtain finished paper.
Embodiment 3: process chart as shown in Figure 1, with beater, polyoxadiazole fibers, terylene staple fiber are dispersed in the aqueous solution, Qi Zhong polyoxadiazole fibers 45%(percentage by weight), terylene staple fiber 55%(percentage by weight), in the aqueous solution, add the concentration of sodium carboxymethylcellulose (CMC) 0.015%(in the aqueous solution) as dispersing aid, obtain finely dispersed suspension.Two kinds of liquid are mixed, obtain the slurry of concentration 0.04%; Approach flow moulding copy paper, form l Water Paper page; By acquisition l Water Paper page squeeze, dewatered drying, bake out temperature is 100 ℃; Dried paper industry is carried out press polish, calender pressure 0.3MPa, and 15 ~ 20 ms/min of speed of a motor vehicle limits, 15 meters ~ 20 ms/min of press polish speed, obtain finished paper.
Because polyoxadiazole fibers is a kind of inertia macromolecular material, so with Kapton or polyester film compound after, its superior performance just can better embody, so the composite (polyoxadiazole fibers paper-adhesive-Kapton-adhesive-polyoxadiazole fibers paper after Dui polyoxadiazole fibers paper and Kapton are compound) detect, table 1 is the testing result of embodiment 1
Table 1
Table 2 is the testing result of embodiment 2
Table 2
Table 3 is the testing result of embodiment 3
Table 3
Above-described embodiment limits the preferred embodiment of the present invention, all according to the equivalent transformation of Spirit Essence of the present invention or modification, all should be encompassed in protection scope of the present invention.
Claims (6)
1. a preparation method for the polyoxadiazole fibers paper that the polyoxadiazole fibers of take is raw material, is characterized in that comprising the following steps:
I) prepare slurry, respectively polyoxadiazole fibers and other components are disperseed, are mixed slurry;
Ii) net forming copy paper on slip, obtain l Water Paper page;
Iii) will obtain the dehydration of l Water Paper page, squeezing, dry;
Iv) dried page carries out press polish moulding.
2. preparation method according to claim 1, is characterized in that: the percentage by weight of each component described step I) is: according to percentage by weight ， polyoxadiazole fibers 0% ~ 60%, terylene staple fiber 0% ~ 70%, cellulose 0 ~ 0.05%.
3. according to preparation method claimed in claim 1, it is characterized in that: described step I i), paper making pulp is sent into net forming copy paper on the paper machine that comprises head box, obtained l Water Paper page.
4. according to preparation method claimed in claim 1, it is characterized in that: described step I ii) middle operating procedure is as follows:
(1) squeezing: adopt two one press dewatering of blanket of two rollers;
(2) dry: bake out temperature is 100 ~ 110 ℃.
5. according to preparation method claimed in claim 1, it is characterized in that: in v) press polish forming process of described step I, press polish pressure is 0.3MPa 15 ~ 20 ms/min of speed of a motor vehicle limits, 15 meters ~ 20 ms/min of press polish speed.
6. the polyoxadiazole fibers of take of making according to method described in claim 1 to 5 is characterized in that as raw material polyoxadiazole fibers paper: described polyoxadiazole fibers paper has good resistance to elevated temperatures, electrical insulation capability, as transformer and motor insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129371.5A CN104109984A (en) | 2013-04-16 | 2013-04-16 | Polyoxadiazole fiber paper based on polyoxadiazole fiber, and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310129371.5A CN104109984A (en) | 2013-04-16 | 2013-04-16 | Polyoxadiazole fiber paper based on polyoxadiazole fiber, and preparation method thereof |
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| CN104109984A true CN104109984A (en) | 2014-10-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818646A (en) * | 2015-05-22 | 2015-08-05 | 江苏宝德新材料有限公司 | Fiber paper containing p-POD chopped fiber and preparation method of fiber paper |
| CN104894922A (en) * | 2015-05-22 | 2015-09-09 | 江苏宝德新材料有限公司 | Fiber paper containing m-POD precipitation fibers and preparation method and application of fiber paper containing m-POD precipitation fibers |
| WO2016188351A1 (en) * | 2015-05-22 | 2016-12-01 | 江苏宝德新材料有限公司 | Fibre paper comprising pod and preparation method therefor |
| CN106283833A (en) * | 2016-10-21 | 2017-01-04 | 江南大学 | A kind of preparation method of superhigh molecular weight polyethylene fibers paper |
| CN110349717A (en) * | 2019-07-15 | 2019-10-18 | 瑞安复合材料(深圳)有限公司 | A kind of fire retardant insulating composite material of generator high-temperature stable |
| CN110682615A (en) * | 2018-07-04 | 2020-01-14 | 康利源科技（天津）股份有限公司 | NMN insulating paper structure and production process thereof |
| CN112501951A (en) * | 2020-11-23 | 2021-03-16 | 江苏展宝新材料有限公司 | Preparation method of separation membrane composite support |
-
2013
- 2013-04-16 CN CN201310129371.5A patent/CN104109984A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818646A (en) * | 2015-05-22 | 2015-08-05 | 江苏宝德新材料有限公司 | Fiber paper containing p-POD chopped fiber and preparation method of fiber paper |
| CN104894922A (en) * | 2015-05-22 | 2015-09-09 | 江苏宝德新材料有限公司 | Fiber paper containing m-POD precipitation fibers and preparation method and application of fiber paper containing m-POD precipitation fibers |
| WO2016188351A1 (en) * | 2015-05-22 | 2016-12-01 | 江苏宝德新材料有限公司 | Fibre paper comprising pod and preparation method therefor |
| CN104818646B (en) * | 2015-05-22 | 2017-07-07 | 江苏展宝新材料有限公司 | Fibrous paper comprising p POD chopped strands and preparation method thereof |
| CN106283833A (en) * | 2016-10-21 | 2017-01-04 | 江南大学 | A kind of preparation method of superhigh molecular weight polyethylene fibers paper |
| CN106283833B (en) * | 2016-10-21 | 2018-03-02 | 江南大学 | A kind of preparation method of superhigh molecular weight polyethylene fibers paper |
| CN110682615A (en) * | 2018-07-04 | 2020-01-14 | 康利源科技（天津）股份有限公司 | NMN insulating paper structure and production process thereof |
| CN110349717A (en) * | 2019-07-15 | 2019-10-18 | 瑞安复合材料(深圳)有限公司 | A kind of fire retardant insulating composite material of generator high-temperature stable |
| CN112501951A (en) * | 2020-11-23 | 2021-03-16 | 江苏展宝新材料有限公司 | Preparation method of separation membrane composite support |
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Application publication date: 20141022 |