CN101165271A - Method for preparing aramid fiber fibre composite sheet material - Google Patents
Method for preparing aramid fiber fibre composite sheet material Download PDFInfo
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- CN101165271A CN101165271A CNA2006100220810A CN200610022081A CN101165271A CN 101165271 A CN101165271 A CN 101165271A CN A2006100220810 A CNA2006100220810 A CN A2006100220810A CN 200610022081 A CN200610022081 A CN 200610022081A CN 101165271 A CN101165271 A CN 101165271A
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Abstract
The present invention discloses composite aramid fiber sheet making process, and is especially process of making sheet with aramid fiber/polyester paper or aramid fiber/polyphenyl thioether paper as material. Aramid fiber/polyester paper or aramid fiber/polyphenyl thioether paper is produced into different types of sheet through superposing, heating in hot roller and pressurizing. During the production, PET film or polyphenyl thioether film to act as adhesive is added between two sheets of paper, and this simplifies the production process, raises the product performance and lowers the production cost.
Description
Technical field
The invention belongs to the synthetic fibre paper field, particularly a kind of manufacture method of aramid fiber fibre composite sheet material.
Background technology
Aramid fiber paper has very high TENSILE STRENGTH, fire-retardant, insulating properties that the coefficient of expansion is low, corrosion-resistant and excellent.But because fusing point and decomposition temperature are approaching, can not be with melt extruding or the method for heating and mould pressing is processed.Therefore make that sheet material need add other binder or thermoplastic carries out compound.Since poly paper (Nomex paper) comes out, there is a large amount of relevant patents to deliver (United States Patent (USP) 3756908,5667900), its manufacture method all is to be structural fibers with poly staple fibre, pulp; The fibrid made from the poly resin is that binding agent is produced.Because this staple fibre, pulp, fibrid are hydrophobics, are difficult to be uniformly dispersed in water, the evenness that is ferreted out paper is difficult to reach requirement.The more important thing is that this paper does not have tangible fusing point, fusing point can't be made thin sheet material by the method for heated lamination and use near decomposition temperature, does not satisfy growing electronics, the needs of electrical equipment industry.
In United States Patent (USP) 5948543, disclose the use resin and made binding agent, Fanglun 1414 and poly aramid fiber bonding has been made the laminated material of aramid nonwoven thing.
(application number: 200380100809.1), disclose folder one deck polyester film in two-layer aramid fiber paper, the method for producing sheet material by hot pressing in the Chinese invention patent ublic specification of application.Because the bond properties between polyester film and the aramid fiber paper poor (because of the surface energy of aramid fiber paper is too low, unfavorable bonding with other material) needs to adopt special heat seal technology just can reach instructions for use.As polyester film being made three layers, the skin polyester bigger with the aramid fiber affinity, make by the relatively poor polyester of compatibility with the mechanics better performances for internal layer.And when producing sheet material, need produce earlier behind the aramid fiber paper compound with mylar again, then by being hot pressed into sheet material.Obviously, do like this and not only increased operation and also increased cost.
In view of the as above shortcoming of prior art, the objective of the invention is to study a kind of manufacture method of aramid fiber fibre composite sheet material, it is easy to make it to have technology, the characteristics that production cost is lower.
Summary of the invention
The manufacture method of aramid fiber fibre composite sheet material, adopt following step:
1) contain in the blank paper paper: aramid fiber 50-80 weight portion, thermoplasticity cohere fiber 20-50 weight portion.Behind the aramid fiber cutting short-forming fiber, discongest in the waterpower fluffer by the 0.01%-0.1% weight concentration and to make slurries (A), thermoplasticity is cohered fiber discongest in the waterpower fluffer by the 0.01%-0.1% weight concentration and make slurries (B); Slurries (A), (B) are joined by described weight portion join in the slurry still, add the modulation of suitable conventional dispersant and thickener and obtain paper pulp,, dewater shapings of on general paper machine, manufacturing paper with pulp of the slurries after preparing, predrying, the ground paper after predrying from drying tunnel by making blank paper paper; 2) with 1) the blank paper that obtains is incorporated into and is heated to thermoplasticity in the drying tunnel and coheres the above 20-50 of fusing point ℃ of fiber, and two-layer or two-layer above substrate paper is piled up further compression heat sealing on heat bundle machine; Paper after the heat seal is incorporated in the chill roll cools off; Obtain the finished product sheet material through press polish, side cut, shaping, rolling again.
Adopt method of the present invention, directly using aramid fiber and polyester (or polyphenylene sulfide) fiber is raw material, by wet papermaking process aramid fiber/polyester (or polyphenylene sulfide) fiber hair paper of manufacturing paper with pulp.Before the papermaking, these two kinds of staple fibres are dispersed in respectively in the water, carry out mechanical beating and grinding and make fiber fibrillation, in joining the slurry still, mix in proportion then.When copying paper, the fiber of two kinds of fibrillation is weave in disorderly, and blank paper is after hot pressing, and the polyester fiber fusion is bonded together aramid fiber, has fundamentally solved aramid fiber and polyester fiber and has cohered bad problem.Both avoided to use other binder at compound tense, also simplified manufacturing technique at aramid fiber and polyester fiber.The product sheet material not only has high strength, high temperature resistant, corrosion-resistant, advantages such as moisture absorption ratio is low, insulating properties are good, high elongation, and production technology is simple, and production cost is low, and is more competitive on market.
Description of drawings
Fig. 1 is a sheet production schematic flow sheet of the present invention
The specific embodiment
The aramid fiber that the present invention uses is not limited to Fanglun 1313.Can adopt Fanglun 1414 or aromatic heterocyclic modified aramid fiber.
In order further to improve the insulating properties of sheet material, can carry out surface treatment to synthetic sheet material of the present invention.Surface conditioning agent can be solvent type aramid fiber resin solution, also can be water miscible organosilyl water emulsion.Preferred surface conditioning agent is organosilicon drilling additives GW-2.
Joining when slurry, for the denseness that increases fiber slurry with that fiber is distributed is more even, and in order to make ground paper before setting, keep certain intensity, should add a spot of inorganic gel (SM) and/or high molecular polyethylene glycol oxide joining when starching in water.The about 0.3-0.8% of consumption adjusts according to the viscosity of thickener and the feature of paper.
It is similar that the present invention prepares aramid fiber/polyester or the aramid fiber/method of polyphenylene sulfide blank paper and general wet papermaking method.Specific practice 1), Fanglun 1313 is separated by 0.01-0.1% weight concentration comb, make slurries A; Pet fiber is separated by 0.01-0.1% weight concentration comb, made slurries B.2), slurries A and B are mixed and made into paper pulp in joining the slurry still; Again above-mentioned paper pulp is adopted the shaping of manufacturing paper with pulp of conventional papermaking process; Dehydration, dry and preheating, be pressed into blank paper in advance.This blank paper can wind up separately as semi-finished product and use for making sheet material.
The method that the present invention prepares aramid fiber/polyester or aramid fiber/polyphenylene sulfide sheet material continuously as shown in Figure 1.Wherein 1 is aramid fiber/polyester or aramid fiber/polyphenylene sulfide paper roll, and 2 is that carry-over pinch rolls 3 are the high temperature drying tunnel, and 4 is that heat is pricked roller, and 5 is chill roll, and 6 is polyester film or polyphenylene sulfide paper (or film) volume; Also can be aramid fiber/polyester or aramid fiber/polyphenylene sulfide paper roll (using) for making thick sheet material.When making aramid fiber/polyester sheet, composite sheet on the aramid fiber/polyester volume (1,6) given by carry-over pinch rolls send in the drying tunnel (3) after pressing evenly, in drying tunnel, composite sheet is preheating to (about 230-240 ℃) near the polyester fiber fusing point, send into heat again and prick in the roller (the about 250-260 of temperature ℃ of compression heat sealing, linear pressure 1000-2000N/cm), enter cooling in the chill roll, typing then, promptly obtain aramid fiber/polyester composite sheet material.
Embodiment 1:
Blank paper in following ratio preparation present embodiment special synthetic fiber paper.
70 parts of poly amine fibers (weight portion)
30 parts of poly-terephthalic acids ethylene glycol fat fibers
The fiber number of above-mentioned poly amine fiber is that 1.5d, length 6m/m polyethylene terephthalate fiber are fiber number 1.5d, length 6m/m.
Concrete production method:
Respectively Fanglun 1313 is discongested system factory with polyethylene terephthalate's fiber by 0.05% concentration in the waterpower fluffer and become A, B liquid.Then A, B liquid are sent in the slurry-stablizing case after mixing in joining the slurry still.Simultaneously, in slurry-stablizing case, add 5 parts of high molecular polyethylene glycol oxides.Copy the paper moulding according to a conventional method, use for making sheet material dehydration, dry back directly rolling blank paper.The blank paper of producing by method shown in Figure 1 places on the paper frame (1,6) of figure.Again blank paper is passed through (temperature 180-200 ℃ of carry-over pinch rolls, linear pressure 200N/cm) gives and sending in the drying tunnel (3) after pressing evenly, send into heat after in drying tunnel, blank paper being preheating to 230-240 ℃ again and prick in the roller (temperature 250-260 ℃ of compression heat sealing, linear pressure 3000N/cm), enter cooling in the chill roll, typing then, promptly get the sheet material that thickness is 0.25-0.3mm.
Embodiment 2: will place on the paper frame (1) of accompanying drawing by the blank paper that the method shown in the example 1 is produced.Again polyphenylene sulfide paper is placed on the paper frame (6).To roll up " blank paper " on (1) and the polyphenylene sulfide paper on the paper frame (6) and give (temperature 190-200 ℃ of pressure by carry-over pinch rolls (2), linear pressure 200N/cm), send in the drying tunnel (3) evenly, send into heat after in drying tunnel, paper being preheating to 250-26 ℃ again and prick in the roller (temperature 280-300 ℃ of compression heat sealing, linear pressure 3000N/cm), enter cooling in the chill roll, typing then, promptly thickness is the sheet material of 0.3-0.35mm.
Embodiment 3: the production method of sheet material is basic identical with embodiment 1.Not existing together is to replace the Polyethylene Terephthalates to make blank paper with polyphenylene sulfide fibre, obtains the sheet material that thickness is 0.3-0.35mm.
Embodiment 4: will place on the paper frame (1) of accompanying drawing by the blank paper that example 3 methods are produced.Again polyester film (thickness 0.7mm) is placed on the paper frame (6).To roll up " blank paper " on (1) and the polyester film on the paper frame (6) and give (temperature 180-200 ℃ of pressure by carry-over pinch rolls (2), linear pressure 200N/cm) sends in the drying tunnel (3) after evenly, in drying tunnel with paper " send into heat after being preheating to 230-240 ℃ again and prick compression heat sealing (temperature 250-260 ℃; linear pressure 3000N/cm) in the roller; enter cooling in the chill roll, typing then, promptly thickness is the sheet material of 0.3-0.35mm.
The invention is not restricted to above embodiment.Can be when making composite fibre paper and sheet material by changing proportioning raw materials, the number of plies of paper, the permutation and combination method of different paper and the composite sheet and the sheet material that hot-rolled process parameter is produced different size, purposes of paper.The present invention uses coheres fiber or film is not limited to pet fiber, polyphenylene sulfide fibre and their film.Can be PA66 fiber and film, also can be PEN (PEN), polystyrene film.Polyester fiber can be pet fiber, polybutylene terephthalate (PBT) fiber.
Claims (5)
1. the manufacture method of an aramid fiber fibre composite sheet material, adopt following step to make:
1) contain in the blank paper paper: aramid fiber 50-80 weight portion, thermoplasticity cohere fiber 20-50 weight portion; Behind the aramid fiber cutting short-forming fiber, discongest in the waterpower fluffer by the 0.01%-0.1% weight concentration and to make slurries (A), thermoplasticity is cohered fiber discongest in the waterpower fluffer by the 0.01%-0.1% weight concentration and make slurries (B); Slurries (A), (B) are joined by described weight portion join in the slurry still, add the modulation of suitable conventional dispersant and thickener and obtain paper pulp,, dewater shapings of on general paper machine, manufacturing paper with pulp of the slurries after preparing, predrying.Ground paper after predrying from drying tunnel by making blank paper;
2) with 1) the blank paper that obtains is incorporated into and is heated to thermoplasticity in the drying tunnel and coheres the above 20-50 of fusing point ℃ of fiber, and two-layer or two-layer above substrate paper is piled up further compression heat sealing on heat bundle machine; Paper after the heat seal is incorporated in the chill roll cools off; Obtain the finished product sheet material through press polish, side cut, shaping, rolling again.
2. the manufacture method of aramid fiber fibre composite sheet material according to claim 1 can overlay one deck thermoplastic material film when it is characterized in that on heat bundle machine compression heat sealing between two paper.
3. the manufacture method of aramid fiber fibre composite sheet material according to claim 1 is characterized in that it is polyester or polyphenylene sulfide fibre that the thermoplasticity described in the substrate paper is cohered fiber.
4. the manufacture method of aramid fiber fibre composite sheet material according to claim 2 is characterized in that described thermoplastic material film is polyester or PPS films.
5. the manufacture method of aramid fiber fibre composite sheet material according to claim 3 is characterized in that, described polyester fiber can be pet fiber, polybutylene terephthalate (PBT) fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100220810A CN101165271A (en) | 2006-10-20 | 2006-10-20 | Method for preparing aramid fiber fibre composite sheet material |
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| CNA2006100220810A CN101165271A (en) | 2006-10-20 | 2006-10-20 | Method for preparing aramid fiber fibre composite sheet material |
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| CN101165271A true CN101165271A (en) | 2008-04-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888779A (en) * | 2011-07-18 | 2013-01-23 | 四川得阳科技股份有限公司 | Process method of coating aramid fiber resin protective layer on surface of polyphenylene sulfide fiber |
| CN109162142A (en) * | 2018-09-14 | 2019-01-08 | 天津工业大学 | A kind of tubular membrane non-woven base cloth and preparation method thereof |
| CN109355806A (en) * | 2018-11-29 | 2019-02-19 | 中山市理美办公设备有限公司 | A kind of preparation process of slim duplicator cleaning paper non-woven fabrics |
| CN113005820A (en) * | 2021-02-25 | 2021-06-22 | 陕西科技大学 | Preparation method of multilayer composite aramid paper |
-
2006
- 2006-10-20 CN CNA2006100220810A patent/CN101165271A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888779A (en) * | 2011-07-18 | 2013-01-23 | 四川得阳科技股份有限公司 | Process method of coating aramid fiber resin protective layer on surface of polyphenylene sulfide fiber |
| CN109162142A (en) * | 2018-09-14 | 2019-01-08 | 天津工业大学 | A kind of tubular membrane non-woven base cloth and preparation method thereof |
| CN109162142B (en) * | 2018-09-14 | 2021-09-03 | 天津工业大学 | Tubular membrane non-woven base fabric and preparation method thereof |
| CN109355806A (en) * | 2018-11-29 | 2019-02-19 | 中山市理美办公设备有限公司 | A kind of preparation process of slim duplicator cleaning paper non-woven fabrics |
| CN113005820A (en) * | 2021-02-25 | 2021-06-22 | 陕西科技大学 | Preparation method of multilayer composite aramid paper |
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Open date: 20080423 |