CN1990927A - Method of preparing fiber reinforcement thermoplastic plastics felt premixed material by stitch-bonding method - Google Patents
Method of preparing fiber reinforcement thermoplastic plastics felt premixed material by stitch-bonding method Download PDFInfo
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- CN1990927A CN1990927A CN 200510134918 CN200510134918A CN1990927A CN 1990927 A CN1990927 A CN 1990927A CN 200510134918 CN200510134918 CN 200510134918 CN 200510134918 A CN200510134918 A CN 200510134918A CN 1990927 A CN1990927 A CN 1990927A
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- fortifying fibre
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Abstract
The invention relates to a method for producing the pre-mixed body of fiber reinforced thermoplastic felt in knitting method. Base and reinforced fiber are produced into felt by knitting method, which is used as the pre-mixed body of fiber reinforced thermoplastic. It comprises that A, base and reinforced fiber with weight ratio of 95-20:5-80 is set on the creel equally and is sent to short-cut machine; B, mixed fiber after short-cut is dropped on the forming net belt evenly to form felt stock; C, the felt stock is fed into knitting machine to be knitted so as to produce finished knitting felt. The knitting felt with reinforced and base fibers produced in the invention is transported in convenience. In using, it can be cut to needed dimension according to the demand of product and is formed by plate hot-pressing technology. The produced plated is provided with high mechanical property and tensile strength. The residual rim leftover can be reused and the waste ratio of material is almost zero. It is provided with low cost of transporting and machining in production.
Description
Technical field
Technical field involved in the present invention is a composite, and especially the moulding process of thermoplastic composite is the method that a kind of loop bonding legal system is equipped with fiber reinforcement thermoplastic plastics felt premixed material specifically.
Background technology
Present existing technology one is a GMT sheet material technology, has two kinds of production methods, all comparative maturities.A kind of is dry process, and it is with fiberglass needled mat and polypropylene foil or the alternate sandwich-like that is overlapped into of melt polypropylene, adds through the double-steel belt pressing machine heating and pressurizing of special use, cooling to be pressed into sheet material; Another kind method is a wet method, also claims to copy the paper method, and it is that glass chopped yarn is mixed making beating with polypropylene powder, by sedimentation, suction defoam, moisture enters drying oven and dries, again through the double-steel belt pressing machine heating and pressurizing, cool off to pressurize and be fixed to sheet material.The shortcoming of dry method is that melt polypropylene viscosity is big, is difficult to the thorough impregnation glass fibre, thereby makes the contact area of matrix plastic and fortifying fibre few, and interface bond strength is poor, sheet material internal porosity height, and this just makes the mechanical strength of sheet material give a discount; Be difficult to remove and introduce auxiliary agent such as flocculant during wet moulding, influenced the performance of sheet material, the TENSILE STRENGTH of sheet material, stretch modulus, bending strength, bending modulus, impact strength, heat distortion temperature etc. are not high.The product that these two kinds of methods are not only produced has dipping not exclusively or such or such defective such as fiber is short, and the operation line length, and equipment is huge, operating difficulties, and technical sophistication, the sheet material cost of manufacture is higher, and required amount of investment is also quite big, has restricted applying of it.The sheet material that GMT technology makes, its reinforced fiber content generally are up to about 40% (percentage by weight), rethink just to improve to be difficult to.
Patent WO2005039871 has proposed a kind of forming method of new Nomex.It is on the continuous carpet veneer of the glass fibre that makes, and repaves one deck matrix fiber, carries out acupuncture so on demand after the MULTILAYER COMPOSITE again, can be pressed into sheet material then.This method has improved the mixed effect of matrix plastic and fortifying fibre, but on material monolithic, layer and interlayer still have serious non-uniform phenomenon.And this method needs to produce earlier glass fibre continuous felt, many one production processes.
Summary of the invention
What the present invention will solve is exactly the problem that above-mentioned prior art exists, and is equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material for people provide a kind of loop bonding legal system.
The present invention adopts following technical scheme: use the loop bonding method that matrix fiber and fortifying fibre are made felt (loop bonding felt), as the fiber reinforced thermoplastics premix, this premix can be directly used in the hot-forming of fiber reinforced thermoplastics goods, and this method comprises the steps:
A. with matrix fiber and fortifying fibre by 95～20: 5～80 weight ratio evenly is positioned on the creel, is introduced into chopping machine then together;
B. the even land of blended fiber after short the cutting form the felt base on the moulding guipure;
C. felt base feeding loop bonding head is carried out loop bonding, promptly make finished product loop bonding felt.
From the angle of material property, the fusing point of fortifying fibre should be higher than used matrix fiber more than 10 ℃; The preferred weight ratio of matrix fiber and fortifying fibre is 60～40: 40～60, when the needs material has good surface appearance, can select the high ratio of matrix fiber.
Matrix fiber of the present invention is a polypropylene fibre, and fortifying fibre is a glass fibre.
Its filament diameter of matrix fiber of the present invention is between 6 microns to 1 millimeter, and preferable range is between 10 microns to 0.1 millimeter; The fortifying fibre filament diameter is between 4 microns to 0.1 millimeter, and preferable range is between 8 microns to 25 microns.
In the steps A of the present invention matrix fiber and fortifying fibre evenly be positioned on the creel and can adopt one of following method:
A, near at matrix fiber and fortifying fibre production site gap volume felt premix production site, under the situation of being convenient to transport, matrix fiber and the fortifying fibre (being commonly called as cake) that props up than spun yarn can be replaced respectively, is put in equably on the creel in required ratio, can guarantee that like this matrix fiber and fortifying fibre fully mix;
B, far away at fiber production place gap volume felt production site when transportation is inconvenient, can becomes the thicker yarn group of yarn count with fortifying fibre in the first network of required ratio with matrix fiber, and then be transported to loop bonding felt production scene.The method of the mixed fiber yarn that this just knows in the industry;
C, also can use matrix fiber, fortifying fibre the wire drawing stage with regard to mixed uniformly composite yarn.
The method that the present invention recommends to use is method A.This method can be adjusted fiber species and ratio on demand easily, has saved the doff operation, and economical, flexible, fiber has been subjected to friction, damage less.
The present invention adopts ripe loop bonding method to make the loop bonding felt that contains fortifying fibre and matrix fiber.The professional knows that the loop bonding felt does not have Nomex paulin pine, is convenient to the transportation of product, can be cut into required size and use common sheet material heat pressing process directly according to product requirement during use, carry out hot-forming, make the high composite of reinforced fiber content, its mechanical property and TENSILE STRENGTH height.And unnecessary leftover pieces also can reuse, and the waste rate of material is almost nil.Transportation, processing cost in the production also are reduced.
Shop felt, stitched technique involved in the present invention is mature technique in the industry.Can buy supporting loop bonding felt production equipment on the market.
Description of drawings
Fig. 1 is the flow chart schematic diagram that the loop bonding legal system is equipped with fiber reinforcement thermoplastic plastics felt premixed material.
1 is that creel, 2 is that fiber (comprising matrix fiber and fortifying fibre), 3 is that jockey pulley, 4 is that chopping machine, 5 is that felt base conveyer belt, 6 is that loop bonding mechanism, 7 is that loop bonding line tension roller, 8 is that loop bonding line (line that can select for use polypropylene fibre to make), 9 is that loop bonding felt, 10 is that rolling carrying roller, 11 is that felt is rolled up.
The specific embodiment
1, polypropylene fibre and glass fibre (have only been listed the weight ratio of glass fibre by the described weight ratio of table 1 in the table 1, surplus is polypropylene fibre) replace respectively, be put in equably on the creel, evenly be positioned on the creel 1, behind jockey pulley, be introduced into chopping machine together;
2. the even land of blended fiber after short the cutting form the felt base on felt base conveyer belt;
C. felt base feeding loop bonding mechanism 6 is carried out loop bonding, promptly make finished product loop bonding felt, be wound into felt volume 11.
For the ease of the performance of investigation, more this premix, we make sheet material with it, carry out mechanical property and detect, and all technologies that relate to, data are specified in down:
The loop bonding felt that makes is directly put into the hot pressing of flat plate heat mould, 190 ℃ of mould temperature, pressure 4kg/cm
2, 6 minutes time.Pressure 3kg/cm colds pressing
2, cold pressing 5 minutes time the type of cooling, water-cooled.
The every detection data of sheet material see the following form:
Regulate different glass fiber contents, we have carried out the TENSILE STRENGTH detection with the sheet material that makes, gained tables of data one:
Table one
| Glass fiber content (%) | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
| TENSILE STRENGTH (MPa) | 72 | 84 | 98 | 123 | 147 | 130 | 124 |
Reach at 60% o'clock in content of glass fiber, the TENSILE STRENGTH of sheet material has maximum.
Claims (7)
1, a kind of loop bonding legal system is equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material, uses the loop bonding method that matrix fiber and fortifying fibre are made felt, as the fiber reinforced thermoplastics premix, it is characterized in that comprising the steps:
A. with matrix fiber and fortifying fibre by 95～20: 5～80 weight ratio evenly is positioned on the creel, is introduced into chopping machine then together;
B. the even land of blended fiber after short the cutting form the felt base on the moulding guipure;
C. felt base feeding loop bonding head is carried out loop bonding, promptly make finished product loop bonding felt.
2, loop bonding legal system as claimed in claim 1 is equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material, and the preferred weight ratio that it is characterized in that matrix fiber and fortifying fibre is 60～40: 40～60.
3, loop bonding legal system as claimed in claim 1 is equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material, it is characterized in that the fusing point of fortifying fibre is higher than used matrix fiber more than 10 ℃.
4, loop bonding legal system as claimed in claim 1 is equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material, and it is one of following to it is characterized in that described matrix fiber and fortifying fibre the method on the creel of evenly being positioned over can adopt:
A, near at matrix fiber and fortifying fibre production site gap volume felt premix production site, under the situation of being convenient to transport, matrix fiber and the fortifying fibre that props up than spun yarn can be replaced respectively, is put in equably on the creel in required ratio, can guarantee that like this matrix fiber and fortifying fibre fully mix;
B, far away at fiber production place gap volume felt premix production site when transportation is inconvenient, can becomes the thicker yarn group of yarn count with fortifying fibre in the first network of required ratio with matrix fiber, and then be transported to the needle felt production scene;
C, use matrix fiber, fortifying fibre the wire drawing stage with regard to mixed uniformly composite yarn.
5, be equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material as any described loop bonding legal system of claim 1 to 4, it is characterized in that:
A, described matrix fiber are polypropylene fibre;
B, described fortifying fibre are elected glass fibre as.
6, the method that is equipped with fiber reinforcement thermoplastic plastics felt premixed material as any described loop bonding legal system of claim 1 to 4, it is characterized in that its filament diameter of matrix fiber between 6 microns to 1 millimeter, the fortifying fibre filament diameter is between 4 microns to 0.1 millimeter.
7, loop bonding legal system as claimed in claim 6 is equipped with the method for fiber reinforcement thermoplastic plastics felt premixed material, it is characterized in that matrix fiber filament diameter preferable range is between 10 microns to 0.1 millimeter, fortifying fibre filament diameter preferable range is between 8 microns to 25 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101349186A CN100457995C (en) | 2005-12-29 | 2005-12-29 | Method of preparing fiber reinforcement thermoplastic plastics felt premixed material by stitch-bonding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101349186A CN100457995C (en) | 2005-12-29 | 2005-12-29 | Method of preparing fiber reinforcement thermoplastic plastics felt premixed material by stitch-bonding method |
Publications (2)
| Publication Number | Publication Date |
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| CN1990927A true CN1990927A (en) | 2007-07-04 |
| CN100457995C CN100457995C (en) | 2009-02-04 |
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| CNB2005101349186A Expired - Fee Related CN100457995C (en) | 2005-12-29 | 2005-12-29 | Method of preparing fiber reinforcement thermoplastic plastics felt premixed material by stitch-bonding method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851872A (en) * | 2012-08-29 | 2013-01-02 | 常州市第八纺织机械有限公司 | Stitch-knitting machine |
| CN103826336A (en) * | 2014-01-20 | 2014-05-28 | 刘中威 | Wind-driven generator electrothermal ice melting rotor blade, electrothermal chip and forming device and method |
| CN104527104A (en) * | 2014-11-28 | 2015-04-22 | 中材科技股份有限公司 | Continuous forming device for hollow composite board-wood plastic composite material and application thereof |
| CN105216189A (en) * | 2015-10-22 | 2016-01-06 | 烟台正海合泰科技股份有限公司 | A kind of production method of automotive interior roof |
| CN108025945A (en) * | 2015-09-03 | 2018-05-11 | 日本电气硝子株式会社 | The manufacture method of fiberglas chopped strand and the manufacture method of fiberglas chopped strand mat |
| CN109056187A (en) * | 2018-06-28 | 2018-12-21 | 西安工程大学 | Utilize the method for waste and old denim and polypropylene fibre preparation cowboy's fiber reinforced polypropylene composite material |
| CN109823911A (en) * | 2019-01-28 | 2019-05-31 | 重庆国际复合材料股份有限公司 | A kind of chopped automatic wire feeder |
| CN112831906A (en) * | 2021-01-07 | 2021-05-25 | 泰山玻璃纤维有限公司 | Continuous glass fiber stitch-bonded felt production device and production method |
| CN113351032A (en) * | 2021-05-27 | 2021-09-07 | 南京圣卡孚科技有限公司 | Wet-process non-woven fabric base material and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876128A (en) * | 1989-03-31 | 1989-10-24 | E. I. Du Pont De Nemours And Company | Stitchbonded nonwoven fabric |
| CN2647570Y (en) * | 2003-06-27 | 2004-10-13 | 广州全永不织布有限公司 | Stitch bonded composite non-woven cloth |
-
2005
- 2005-12-29 CN CNB2005101349186A patent/CN100457995C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851872A (en) * | 2012-08-29 | 2013-01-02 | 常州市第八纺织机械有限公司 | Stitch-knitting machine |
| CN103826336A (en) * | 2014-01-20 | 2014-05-28 | 刘中威 | Wind-driven generator electrothermal ice melting rotor blade, electrothermal chip and forming device and method |
| CN103826336B (en) * | 2014-01-20 | 2016-01-06 | 刘中威 | Wind-driven generator electro-heat deicing rotor blade, electrothermal chip and shaped device and method |
| CN104527104B (en) * | 2014-11-28 | 2017-01-11 | 中材科技股份有限公司 | Continuous forming device for hollow composite board-wood plastic composite material and application thereof |
| CN104527104A (en) * | 2014-11-28 | 2015-04-22 | 中材科技股份有限公司 | Continuous forming device for hollow composite board-wood plastic composite material and application thereof |
| CN108025945A (en) * | 2015-09-03 | 2018-05-11 | 日本电气硝子株式会社 | The manufacture method of fiberglas chopped strand and the manufacture method of fiberglas chopped strand mat |
| CN108025945B (en) * | 2015-09-03 | 2021-04-09 | 日本电气硝子株式会社 | Method for producing glass chopped strands and method for producing glass chopped strand mat |
| CN105216189A (en) * | 2015-10-22 | 2016-01-06 | 烟台正海合泰科技股份有限公司 | A kind of production method of automotive interior roof |
| CN109056187A (en) * | 2018-06-28 | 2018-12-21 | 西安工程大学 | Utilize the method for waste and old denim and polypropylene fibre preparation cowboy's fiber reinforced polypropylene composite material |
| CN109823911A (en) * | 2019-01-28 | 2019-05-31 | 重庆国际复合材料股份有限公司 | A kind of chopped automatic wire feeder |
| CN109823911B (en) * | 2019-01-28 | 2021-02-02 | 重庆国际复合材料股份有限公司 | Short automatic wire feeding device that cuts |
| CN112831906A (en) * | 2021-01-07 | 2021-05-25 | 泰山玻璃纤维有限公司 | Continuous glass fiber stitch-bonded felt production device and production method |
| CN112831906B (en) * | 2021-01-07 | 2022-04-12 | 泰山玻璃纤维有限公司 | Continuous glass fiber stitch-bonded felt production device and production method |
| CN113351032A (en) * | 2021-05-27 | 2021-09-07 | 南京圣卡孚科技有限公司 | Wet-process non-woven fabric base material and application thereof |
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| Publication number | Publication date |
|---|---|
| CN100457995C (en) | 2009-02-04 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hefei Found Technology Co., Ltd. Assignor: Zhongcai Science & Technology Co., Ltd. Contract fulfillment period: 2009.2.14 to 2017.2.13 contract change Contract record no.: 2009340000177 Denomination of invention: Method of preparing fiber reinforcement thermoplastic plastics felt premixed material by stitch-bonding method Granted publication date: 20090204 License type: Exclusive license Record date: 2009.8.17 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.14 TO 2017.2.13; CHANGE OF CONTRACT Name of requester: HEFEI FENGDE SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20090817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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