CN102352576A - Preparation method for polyimide fiber paper - Google Patents
Preparation method for polyimide fiber paper Download PDFInfo
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- CN102352576A CN102352576A CN2011103003667A CN201110300366A CN102352576A CN 102352576 A CN102352576 A CN 102352576A CN 2011103003667 A CN2011103003667 A CN 2011103003667A CN 201110300366 A CN201110300366 A CN 201110300366A CN 102352576 A CN102352576 A CN 102352576A
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Abstract
The invention provides a preparation method for polyimide fiber paper, which comprises the following steps: defibering and dispersing chopped polyimide fibers into single fibers; adding chemicals, such as poly ethylene oxide (PEO), styrene butadiene latex, cationic polyacrylamide (CPAM) and the like, to pulp; then manufacturing the paper with the pulp by using a paper machine; and performing hot pressing on paper sheets by using a hot press. In the preparation method, the production cost of polyimide fiber molding can be effectively reduced, and the strength of the paper sheets is enhanced, and the application range of the prepared polyimide fiber paper is wider.
Description
Technical field
The invention belongs to the crossing domain of paper industry and material, be specifically related to a kind of preparation method of polyimide fiber paper.
Background technology
Polyimide fiber is a kind of high-performance fiber; Have the characteristics of the heat-resisting oxidation-stabilized performance of high-modulus, high strength, low water absorption, high-low temperature resistant, resistance to chemical attack, hydrolysis, anti-irradiation, excellent electric insulating and excellence, it has wide application future in aerospace industry, electric insulation, atomic energy industry, satellite, nuclear submarine and microelectronics industry.High-tech area mainly is to be used for aerospace industry, electric insulation, atomic energy industry, satellite, nuclear submarine and microelectronics industry in modern times.
The composite that utilizes polyimide fiber and its resin to constitute can be applied to the high-tech industry widely, like the structural material of the structural material in Aviation cable, flexible printing cable, high-temperature insulation electrical equipment, space rocket engine jet pipe, the atomic energy facility, aero-engine, the structural material of new fighter.But because manufacturing cost has limited the use of polyimide fiber.
Aramid fiber paper is special chemical fiber paper with fastest developing speed in the high-temperature insulation paper in the world; Has excellent physical and mechanical properties; Stability, anti-flammability, electrical insulating property and radiation resistance are the important foundation materials in the fields such as Aeronautics and Astronautics, national defence, electronics, communication, environmental protection, chemical industry and ocean development preferably.Utilize the aramid fiber paper base material of aramid fiber preparation, have high strength, low distortion, high temperature resistant, resistance to chemical attack, fire-retardant and excellent electric insulation property.
But the maximum operation (service) temperature of aramid fiber paper base material has bibliographical information about 200 ℃ at present, and aramid fiber paper can use more than the 10a down at 180 ℃, is higher than industrial organic high temperature-resistant paper service life; At 200 ℃ of xeothermic state held 1000h, mechanical strength still keeps original 75%; At 120 ℃ is hot state held 1000h, and it is original more than 60% that mechanical strength keeps; Decompositing a small amount of CO more than 370 ℃
2, CO and N
2Gas (land Zhao Qing, Zhang Meiyun, Wang Zhijie, Wu Yangyu. aramid fiber paper and progress [J]. insulating materials, 2006, (4) .).
Summary of the invention
The object of the present invention is to provide the preparation method of a kind of production cost polyimide fiber paper low, simple to operate.
To achieve these goals, the present invention has adopted following technical scheme:
(1) weak point is cut polyimide fiber and discongest into single fiber;
(2) add the styrene-butadiene latex of the short polyethylene glycol oxide (PEO) of cutting polyimide fiber over dry quality 0.02～0.1% and 3～15% and the PAMC (CPAM) of styrene-butadiene latex quality 0.5～4% in the approach system before copying paper; Make through step (1) weak point of discongesting cut polyimide fiber mix with water, polyethylene glycol oxide (PEO), styrene-butadiene latex and PAMC (CPAM) the water suspension slurry, the short-and-medium mass fraction of cutting polyimide fiber of water suspension slurry is 0.05-1%;
(3) with the water suspension slurry through header box or head box on paper machine, through the chemical action, friction, entanglement of self, bonding or its incorporate together, forming quantitatively is 30～100g/m
2Page, with hot press hot-pressing processing is carried out on the page surface then, polyimide fiber paper.
The length that said weak point is cut polyimide fiber is 1-15mm.
The process of discongesting of said step (1) was discongested in trough-style pulp beater 10～50 minutes for weak point is cut polyimide fiber, discongested under 1～3Kg power 20～60 minutes adding again.
Said paper machine is cylinder paper machine, fourdrinier paper machine or tiltedly nets paper machine.
Beneficial effect of the present invention is embodied in: the method that the preparation method of polyimide fiber paper according to the invention adopts conventional wet to copy paper is copied polyimide fiber and is processed page; And page carried out hot pressing, production cost is low, and is simple to operate; Adopt the polyimide fiber paper of this method preparation to have many characteristics such as high temperature resistant, intensity height; Compare with existing aramid fiber paper, not only the scope of application is wider, and can satisfy the application requirements of special dimension.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment 1
Referring to Fig. 1, (1) is cut polyimide fiber with weak point and is discongested into single fiber; The length that said weak point is cut polyimide fiber is 5mm; The process of discongesting of said step (1) was discongested in trough-style pulp beater 10 minutes for weak point is cut polyimide fiber, discongested under the 2Kg power 60 minutes adding again; (2) add the styrene-butadiene latex of the short polyethylene glycol oxide (PEO) of cutting polyimide fiber over dry quality 0.06% and 9% and the PAMC (CPAM) of styrene-butadiene latex quality 0.5% in the approach system before copying paper; Make through step (1) weak point of discongesting cut polyimide fiber mix with water, polyethylene glycol oxide (PEO), styrene-butadiene latex and PAMC (CPAM) the water suspension slurry, the short-and-medium mass fraction of cutting polyimide fiber of water suspension slurry is 1%; (3) with the water suspension slurry through header box or head box on paper machine through the chemical action, friction, entanglement of self, bonding or its incorporate together, forming quantitatively is 100g/m
2Page, with hot press hot-pressing processing is carried out on the page surface then, polyimide fiber paper, said paper machine is a cylinder paper machine.
Embodiment 2
Referring to Fig. 1, (1) is cut polyimide fiber with weak point and is discongested into single fiber; The length that said weak point is cut polyimide fiber is 1mm; The process of discongesting of said step (1) was discongested in trough-style pulp beater 30 minutes for weak point is cut polyimide fiber, discongested under the 3Kg power 40 minutes adding again; (2) add the styrene-butadiene latex of the short polyethylene glycol oxide (PEO) of cutting polyimide fiber over dry quality 0.1% and 3% and the PAMC (CPAM) of styrene-butadiene latex quality 2.5% in the approach system before copying paper; Make through step (1) weak point of discongesting cut polyimide fiber mix with water, polyethylene glycol oxide (PEO), styrene-butadiene latex and PAMC (CPAM) the water suspension slurry, the short-and-medium mass fraction of cutting polyimide fiber of water suspension slurry is 0.05%; (3) with the water suspension slurry through header box or head box on paper machine through the chemical action, friction, entanglement of self, bonding or its incorporate together, forming quantitatively is 65g/m
2Page, with hot press hot-pressing processing is carried out on the page surface then, polyimide fiber paper, said paper machine is a fourdrinier paper machine.
Embodiment 3
Referring to Fig. 1, (1) is cut polyimide fiber with weak point and is discongested into single fiber; The length that said weak point is cut polyimide fiber is 15mm; The process of discongesting of said step (1) was discongested in trough-style pulp beater 50 minutes for weak point is cut polyimide fiber, discongested under the 1Kg power 20 minutes adding again; (2) add the styrene-butadiene latex of the short polyethylene glycol oxide (PEO) of cutting polyimide fiber over dry quality 0.02% and 15% and the PAMC (CPAM) of styrene-butadiene latex quality 4% in the approach system before copying paper; Make through step (1) weak point of discongesting cut polyimide fiber mix with water, polyethylene glycol oxide (PEO), styrene-butadiene latex and PAMC (CPAM) the water suspension slurry, the short-and-medium mass fraction of cutting polyimide fiber of water suspension slurry is 0.1%; (3) with the water suspension slurry through header box or head box on paper machine through the chemical action, friction, entanglement of self, bonding or its incorporate together, forming quantitatively is 30g/m
2Page, with hot press hot-pressing processing is carried out on the page surface then, polyimide fiber paper, said paper machine be tiltedly to net paper machine.
The present invention utilizes trough-style pulp beater that the short polyimide fiber of cutting is discongested and is dispersed into single fiber; In slurry, add chemicalss such as PEO, styrene-butadiene latex, CPAM; Manufacture paper with pulp into paper with paper machine then; Through hot-pressing processing, strengthened paper strength, good intensity has satisfied it in actual central application.
The polyimide fiber paper product performance such as the following table of the present invention's preparation:
Polyimide fiber is because self structure, has characteristics such as high temperature resistant, thermally-stabilised, excellent electric insulating.Bibliographical information is arranged, the polyimide fiber of different route of synthesis and spinning is carried out thermogravimetric analysis show that its decomposition temperature that begins all can reach more than 300 ℃, the decomposition temperature that has even can reach 600 ℃.Therefore, in the place higher to temperature requirements, the polyimide fiber paper base material demonstrates bigger advantage, and the serviceability temperature of polyimide fiber paper base material can reach more than 300 ℃.
Claims (4)
1. the preparation method of a polyimide fiber paper is characterized in that may further comprise the steps:
(1) weak point is cut polyimide fiber and discongest into single fiber;
(2) add the styrene-butadiene latex of the short polyethylene glycol oxide of cutting polyimide fiber over dry quality 0.02～0.1% and 3～15% and the PAMC of styrene-butadiene latex quality 0.5～4% in the approach system before copying paper; Make through step (1) weak point of discongesting cut polyimide fiber mix with water, polyethylene glycol oxide, styrene-butadiene latex and PAMC the water suspension slurry, the short-and-medium mass fraction of cutting polyimide fiber of water suspension slurry is 0.05-1%;
(3) the water suspension slurry being formed on paper machine quantitatively is 30～100g/m
2Page, then hot-pressing processing is carried out on the page surface, polyimide fiber paper.
2. according to the preparation method of the said a kind of polyimide fiber paper of claim 1, it is characterized in that: the length that said weak point is cut polyimide fiber is 1-15mm.
3. according to the preparation method of the said a kind of polyimide fiber paper of claim 1; It is characterized in that: the process of discongesting of said step (1) was discongested in trough-style pulp beater 10～50 minutes for weak point is cut polyimide fiber, discongested under 1～3Kg power 20～60 minutes adding again.
4. according to the preparation method of the said a kind of polyimide fiber paper of claim 1, it is characterized in that: said paper machine is cylinder paper machine, fourdrinier paper machine or tiltedly nets paper machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103003667A CN102352576A (en) | 2011-09-28 | 2011-09-28 | Preparation method for polyimide fiber paper |
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| CN2011103003667A CN102352576A (en) | 2011-09-28 | 2011-09-28 | Preparation method for polyimide fiber paper |
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| CN102352576A true CN102352576A (en) | 2012-02-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747634A (en) * | 2012-07-27 | 2012-10-24 | 陕西科技大学 | Method for preparing modified polyimide fiber papers |
| CN106120458A (en) * | 2016-06-28 | 2016-11-16 | 江南大学 | A kind of preparation method of polyimides conductive paper |
| CN109183513A (en) * | 2018-09-10 | 2019-01-11 | 江西克莱威纳米碳材料有限公司 | A kind of polyimide fiber far infrared transmission paper and preparation method thereof |
| CN109503960A (en) * | 2018-12-07 | 2019-03-22 | 江苏先诺新材料科技有限公司 | A kind of polyimide fiber enhancing rubber composite material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767228A (en) * | 1994-04-09 | 1998-06-16 | Kolon Industries, Inc. | Aromatic polyamide pulp and its preparing process |
| US6312561B1 (en) * | 2000-01-21 | 2001-11-06 | E. I. Du Pont De Nemours And Company | Flame barrier compositions and their use |
| CN1834342A (en) * | 2006-04-13 | 2006-09-20 | 烟台氨纶股份有限公司 | Meta aramid fibre paper and prepn. process |
| CN1884692A (en) * | 2006-07-10 | 2006-12-27 | 陕西科技大学 | Preparation process for manufacturing insulated paper by para position fiber and meta position fiber |
-
2011
- 2011-09-28 CN CN2011103003667A patent/CN102352576A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767228A (en) * | 1994-04-09 | 1998-06-16 | Kolon Industries, Inc. | Aromatic polyamide pulp and its preparing process |
| US6312561B1 (en) * | 2000-01-21 | 2001-11-06 | E. I. Du Pont De Nemours And Company | Flame barrier compositions and their use |
| CN1834342A (en) * | 2006-04-13 | 2006-09-20 | 烟台氨纶股份有限公司 | Meta aramid fibre paper and prepn. process |
| CN1884692A (en) * | 2006-07-10 | 2006-12-27 | 陕西科技大学 | Preparation process for manufacturing insulated paper by para position fiber and meta position fiber |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747634A (en) * | 2012-07-27 | 2012-10-24 | 陕西科技大学 | Method for preparing modified polyimide fiber papers |
| CN102747634B (en) * | 2012-07-27 | 2014-11-19 | 陕西科技大学 | Method for preparing modified polyimide fiber papers |
| CN106120458A (en) * | 2016-06-28 | 2016-11-16 | 江南大学 | A kind of preparation method of polyimides conductive paper |
| CN106120458B (en) * | 2016-06-28 | 2017-10-20 | 江南大学 | A kind of preparation method of polyimides conductive paper |
| CN109183513A (en) * | 2018-09-10 | 2019-01-11 | 江西克莱威纳米碳材料有限公司 | A kind of polyimide fiber far infrared transmission paper and preparation method thereof |
| CN109183513B (en) * | 2018-09-10 | 2021-01-01 | 江西克莱威纳米碳材料有限公司 | Polyimide fiber far infrared emitting paper and preparation method thereof |
| CN109503960A (en) * | 2018-12-07 | 2019-03-22 | 江苏先诺新材料科技有限公司 | A kind of polyimide fiber enhancing rubber composite material and preparation method thereof |
| CN109503960B (en) * | 2018-12-07 | 2021-07-06 | 江苏先诺新材料科技有限公司 | Polyimide fiber reinforced rubber composite material and preparation method thereof |
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Application publication date: 20120215 |