CN101792983A - Aramid fiber paper for aerospace and manufacturing method thereof - Google Patents
Aramid fiber paper for aerospace and manufacturing method thereof Download PDFInfo
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- CN101792983A CN101792983A CN 201010125398 CN201010125398A CN101792983A CN 101792983 A CN101792983 A CN 101792983A CN 201010125398 CN201010125398 CN 201010125398 CN 201010125398 A CN201010125398 A CN 201010125398A CN 101792983 A CN101792983 A CN 101792983A
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Abstract
The invention relates to an aramid fiber paper for aerospace, belonging to the technical field of speciality paper; the aramid fiber paper is characterized in that: the aramid fiber paper is manufactured by aramid fiber 1313 and aramid fiber 1414 with 1.3-1.5:1 of weight ratio essentially; the manufacturing method comprises the following steps: after the aramid fiber 1414 is mixed with the aramid fiber 1313 in a fibrid mode, and then pulping, hot rolling and press polishing processes are carried out to obtain the aramid fiber paper; the aramid fiber paper has good mechanical intensity and good insulating strength, is used for an aerospace cellular structure and has good effect.
Description
Technical field
The invention belongs to the speciality paper technical field, be specifically related to a kind of aramid fiber paper for aerospace and method for making thereof.
Background technology
Aramid fiber is one of principal item of world's high-performance fiber.It has excellent mechanical property, and stable chemical property and desirable electric property are widely used in many fields such as Aero-Space, industry, automobile daily product, electronics.
Aramid fiber is an aromatic polyamide fibre, is the big molecule of synthesis type that is made of the interconnected aryl of amido link, and wherein amido link has at least 85% directly to be connected on 2 aryl rings.U.S. trade federation was with its called after " aramid fibers " in 1974.What use the most extensively at present is p-aramid fiber and meta-aramid.
The full name of meta-aramid is a poly, is called for short MPIA.Meta-aramid is at first begun one's study in 1956 by du pont company, realizes suitability for industrialized production in 1967, american goods name NOMEX, and China is called aramid fiber 1313.P-aramid fiber is a PPTA, is called for short PPTA, is that du pont company was succeeded in developing in 1971, put into production in 1972, and definite designation is KEVLAR that China is called Fanglun l414.The aramid fiber 1313 fiber is a low modulus fiber, and the Fanglun l414 fiber is a high modulus fibre; The former percentage elongation height, latter's percentage elongation is low.Be reflected on the paper properties, the percentage elongation of Fanglun l414 fiber aramid fiber paper is lower than the percentage elongation of aramid fiber 1313 fiber aramid fiber paper.
Aramid fiber paper substrate composite (be called for short aramid fiber paper) is made by a certain percentage with aramid fiber short fiber (also claiming aramid short fiber) and Fanglun slurry cake (also claiming fibrid) mostly, a spot ofly is equipped with the goods that terylene or string are made different purposes with the aramid fiber short fiber.Aramid fiber paper is the ideal material of making the rebecca cover.The cellular material that uses aramid fiber paper to make can increase substantially aircraft component rigidity, alleviates quality and can satisfy features requirement such as wave penetrate capability.Adopt the good inorfils such as quartz fibre of carbon fiber, wideband wave penetrate capability of aramid fiber and it and absorbing property excellence to mix the making paper base material, requirement that can the implementation structure lighting.
China is concentrating one's energy to develop airliner and large-scale military transportation airplane at present, as the high-performance light aeronautical material that has found application in the aircraft abroad, the aramid fiber paper honeycomb structure homemade beat in the aircraft the application meeting more and more widely.In the prior art, these materials adopt meta-aramid (Fanglun l414) or meta-aramid+pulp to make usually, and the intensity of paper is not high, thickness is big.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of aramid fiber paper for aerospace is provided, it adopts fibrid or fibrid+polyester fiber to make, and mechanical strength, dielectric strength are good.
Another object of the present invention has provided the method for making of described aramid fiber paper.
The following technical scheme of the concrete employing of the present invention:
A kind of aramid fiber paper for aerospace is characterized in that, be in essence by aramid fiber 1313 and Fanglun l414 according to weight ratio 1.3～1.5: 1 makes.
Described Fanglun l414 be with the form of fibrid with after aramid fiber 1313 mixes, again through manufacturing paper with pulp, hot rolling and calendaring technology make.
Described aramid fiber paper for aerospace also comprises polyester fiber.
A kind of aramid fiber paper for aerospace is characterized in that, comprises the steps:
1) raw material is prepared: Fanglun l414 is made the fibrid slurry earlier, mixes according to weight ratio 1: 1.3～1.5 with the aramid fiber 1313 fiber then; Make the suspension of 0.05-0.2% concentration again through washing, dispersion, dispersant is a calgon, dispersant dosage 0.1-0.3%;
2) manufacture paper with pulp
3) hot pressing: hot pressing pressure is 13～15MPa, and hot pressing roller rotating speed is 1～3m/min, and the hot pressing number of times is 2～3 times, and hot pressing temperature is 230～290 ℃;
4) press polish.
The preparation of described fibrid comprises the steps: the Fanglun l414 fiber solution is sent in the precipitation machine, mixes under the high speed shear effect, separates out the fiber of the tiny film strip of fiber, at last through washing, after making beating is refining, obtains the fibrid slurry; Long 3～the 4mm of Fanglun l414 fiber before the making beating, fibre diameter 40～80 μ m, the long 1～2mm of making beating back fiber, diameter 20～40 μ m; Beating process is: 45～50 ° of SR of beating degree; Beating time is 4～6h; Beating consistency 1.5%～2.5%.
In order to increase the initial strength of aramid fiber paper, before manufacturing paper with pulp, add the polyester fiber of blended fiber gross weight 2-3%, as adhesive.
Compared with prior art, the present invention has following beneficial effect:
1) aramid fiber paper of the present invention compared with prior art no matter from the mechanical strength aspect, or the dielectric strength aspect, has all surpassed the level of prior art, specifically sees the following form:
Table 1 aramid fiber paper of the present invention is compared with the prior art table
2) aramid fiber paper of the present invention is as in the manufacturing of cellular board, because of the hot melt of polyester fiber in the paper shrinks the space that forms, helps the infiltration of different viscosities sizing material.And aramid fiber paper of the present invention is under 300 ℃ temperature, and shrinkage factor is very little, has good heat endurance, has kept good tensile strength.
The specific embodiment
Embodiment
A kind of aramid fiber paper for aerospace is characterized in that, comprises the steps:
1) raw material is prepared: Fanglun l414 is made the fibrid slurry earlier, mixes according to weight ratio 1: 1.3～1.5 with the aramid fiber 1313 fiber then; Make the suspension of 0.05-0.2% concentration again through washing, dispersion, dispersant is a calgon, dispersant dosage 0.1-0.3%;
The different proportioning influences of table 2 Fanglun l414 with aramid fiber 1313
| Proportioning | TENSILE STRENGTH N/mm | Tearability mN | Compressive resistance KV/mm |
| ??1.7 | ??35.25 | ??1042.35 | ??18.87 |
| ??1.5 | ??40.20 | ??1098.40 | ??16.01 |
| ??1.3 | ??41.96 | ??1259.20 | ??15.58 |
| ??1.1 | ??43.10 | ??1529.85 | ??12.42 |
Along with the increase of staple fiber proportion, TENSILE STRENGTH increases, and the tearability increase is bigger, and compressive resistance descends.Consider in use the strength character of aramid fiber paper is had relatively high expectations, so determine that aramid fiber paper fibre furnish is 1.3～1.5.
2) manufacture paper with pulp: the formation of sheet influence that former is manufactured paper with pulp to aramid fiber paper is very big, also is control paper quality and the key equipment that improves intensity, evenness.The Nomex paper of E.I.Du Pont Company is to adopt oblique net paper machine to produce.But tiltedly net is when manufacturing paper with pulp the paper stock of high quantitative, difficult drainage, and the restriction of resistance of being netted and shaping length is especially for the paper stock of difficult drainage, even low quantitative its ability of paper of manufacturing paper with pulp also can be restricted.The present invention adopts cylinder mould machine, and its stream slurry road is more conducive to the long stapled dispersion of aramid fiber, and slurry is easier to be uniformly distributed on the forming net.In addition, because the present invention adopts fibre length big, so the concentration of fiber pulp is very low.
3) hot pressing: hot pressing pressure is 13～15MPa, and hot pressing roller rotating speed is 1～3m/min, and the hot pressing number of times is 2～3 times, and hot pressing temperature is 230～290 ℃;
4) press polish.
The preparation of described fibrid comprises the steps: the Fanglun l414 fiber solution is sent in the precipitation machine, mixes under the high speed shear effect, separates out the fiber of the tiny film strip of fiber, at last through washing, after making beating is refining, obtains the fibrid slurry; Long 3～the 4mm of Fanglun l414 fiber before the making beating, fibre diameter 40～80 μ m, the long 1～2mm of making beating back fiber, diameter 20～40 μ m; Beating process is: 45～50 ° of SR of beating degree; Beating time is 4～6h; Beating consistency 1.5%～2.5%.
Claims (6)
1. an aramid fiber paper for aerospace is characterized in that, be in essence by aramid fiber 1313 and Fanglun l414 according to weight ratio 1.3～1.5: 1 makes.
2. aramid fiber paper for aerospace according to claim 1 is characterized in that, described Fanglun l414 be with the form of fibrid with after aramid fiber 1313 mixes, again through manufacturing paper with pulp, hot rolling and calendaring technology make.
3. aramid fiber paper for aerospace according to claim 1 is characterized in that described aramid fiber paper for aerospace also comprises the 2-3% polyester fiber.
4. the method for making of an aramid fiber paper for aerospace is characterized in that, comprises the steps:
1) raw material is prepared: Fanglun l414 is made the fibrid slurry earlier, mixes according to weight ratio 1: 1.3～1.5 with the aramid fiber 1313 fiber then; Make the suspension of 0.05-0.2% concentration again through washing, dispersion, dispersant is a calgon, dispersant dosage 0.1-0.3%;
2) manufacture paper with pulp
3) hot pressing: hot pressing pressure is 13～15MPa, and hot pressing roller rotating speed is 1～3m/min, and the hot pressing number of times is 2～3 times, and hot pressing temperature is 230～290 ℃;
4) press polish.
5. the method for making of aramid fiber paper for aerospace according to claim 4, it is characterized in that, the preparation of described fibrid comprises the steps: the Fanglun l414 fiber solution is sent in the precipitation machine, under the high speed shear effect, mix, separate out the fiber of the tiny film strip of fiber, through washing, after making beating is refining, obtain the fibrid slurry at last; Long 3～the 4mm of Fanglun l414 fiber before the making beating, fibre diameter 40～80 μ m, the long 1～2mm of making beating back fiber, diameter 20～40 μ m; Beating process is: 45～50 ° of SR of beating degree; Beating time is 4～6h; Beating consistency 1.5%～2.5%.
6. the method for making of aramid fiber paper for aerospace according to claim 4 is characterized in that, before manufacturing paper with pulp, adds the polyester fiber of blended fiber gross weight 2-3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010125398 CN101792983A (en) | 2010-03-17 | 2010-03-17 | Aramid fiber paper for aerospace and manufacturing method thereof |
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| CN 201010125398 CN101792983A (en) | 2010-03-17 | 2010-03-17 | Aramid fiber paper for aerospace and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215843A (en) * | 2013-04-02 | 2013-07-24 | 陕西科技大学 | Preparation method of para-aramid paper-base composite material for printed circuit board |
| CN106223103A (en) * | 2016-07-27 | 2016-12-14 | 陕西科技大学 | A kind of preparation method of polyester meta-aramid extrusion coating paper |
| CN107723829A (en) * | 2017-10-17 | 2018-02-23 | 蓝星（成都）新材料有限公司 | A kind of manufacture method of new aramid insulating paper |
| CN112026272A (en) * | 2020-08-17 | 2020-12-04 | 浙江工业大学 | Novel wave-absorbing material with honeycomb structure and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN101220899A (en) * | 2008-01-10 | 2008-07-16 | 绍兴市恒盛新材料技术发展有限公司 | Aramid fiber fire-resistant and heat-insulation material for fire suit and its processing technique |
| CN101343845A (en) * | 2008-07-22 | 2009-01-14 | 成都龙邦新材料有限公司 | Aramid fiber honeycomb core base stock and preparation method thereof |
| CN101368313A (en) * | 2008-09-24 | 2009-02-18 | 常熟市宝沣特种纤维有限公司 | Flame-proof fireproof facing material |
-
2010
- 2010-03-17 CN CN 201010125398 patent/CN101792983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101220899A (en) * | 2008-01-10 | 2008-07-16 | 绍兴市恒盛新材料技术发展有限公司 | Aramid fiber fire-resistant and heat-insulation material for fire suit and its processing technique |
| CN101343845A (en) * | 2008-07-22 | 2009-01-14 | 成都龙邦新材料有限公司 | Aramid fiber honeycomb core base stock and preparation method thereof |
| CN101368313A (en) * | 2008-09-24 | 2009-02-18 | 常熟市宝沣特种纤维有限公司 | Flame-proof fireproof facing material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215843A (en) * | 2013-04-02 | 2013-07-24 | 陕西科技大学 | Preparation method of para-aramid paper-base composite material for printed circuit board |
| CN106223103A (en) * | 2016-07-27 | 2016-12-14 | 陕西科技大学 | A kind of preparation method of polyester meta-aramid extrusion coating paper |
| CN107723829A (en) * | 2017-10-17 | 2018-02-23 | 蓝星（成都）新材料有限公司 | A kind of manufacture method of new aramid insulating paper |
| CN112026272A (en) * | 2020-08-17 | 2020-12-04 | 浙江工业大学 | Novel wave-absorbing material with honeycomb structure and preparation method thereof |
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Application publication date: 20100804 |