CN102416717B - Production method of cluster-shaped fiber thermoplastic composite sheet material - Google Patents
Production method of cluster-shaped fiber thermoplastic composite sheet material Download PDFInfo
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- CN102416717B CN102416717B CN 201110206891 CN201110206891A CN102416717B CN 102416717 B CN102416717 B CN 102416717B CN 201110206891 CN201110206891 CN 201110206891 CN 201110206891 A CN201110206891 A CN 201110206891A CN 102416717 B CN102416717 B CN 102416717B
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Abstract
The invention discloses a production method of a cluster-shaped fiber thermoplastic composite sheet material. By the adoption of technological processes such as pneumatic process, dispersion, mixing, adherence, settlement for web formation, dusting, baking, composite typing and the like, the length-cut fiber bundle is fully dispersed to form cluster-shaped fiber so as to raise the uniform effect of adhering fiber and mixed powders, reduce the content of the mixed powders in the base felt and improve the fiber orientation and fiber web structure in the base felt. As the product is formed into an integral structure, the shear behavior of the product in the invention is superior to that of products of the same kind. In addition, as the fiber form has isotropy, mechanical properties, such as tensile performance and bending resistance in each direction, of the product in the invention are superior to those of products of the same kind, and the longitudinal and transverse strength ratio is reduced. The fiber in the blank felt is not damaged by the machinery fixed network, thus raising expansion rate of the composite sheet material, reduce density and increase the strength quality of the cluster-shaped fiber composite sheet material.
Description
Technical field
The present invention relates to a kind of production method of fiber thermoplastic composite sheet material, particularly relate to a kind of production method of cluster-shaped fiber thermoplastic composite sheet material.
Background technology
The glass fibre that automotive trim is commonly used both at home and abroad at present strengthens plastic composite board material (Glassmat reinforced thermoplastics), is called for short GMT sheet material.No matter be wet method and dry process, fiber orientation in such sheet material obviously, cause the vertical transverse strength ratio of wet processing composite board fiber all to be greater than 1: 2.2, the vertical transverse strength ratio of dry process composite board fiber all is greater than 1: 1.5, and the combing acupuncture fiber base felt uniformity in dry process is poor, irregularity is all 4%～7%, difference due to vertical transverse strength, at present height stretching gadget is remained by increasing material unit are grammes per square metre and realizes, the material reducing effect of lightweight is not remarkable; Separately because the base felt of wet processing is the paper technology manufacture by having improved, it replaces the water in traditional slurry with foam, usually slurry plays and carries fiber and mineral filler is formed to the fiber base felt, thereby this process equipment drops into greatly, energy consumption is high, Industrial Wastewater Treatment is difficult; The base felt of dry process is to manufacture by the combing needling process of non-manufacturing process, thereby production process is more, and it is larger that the quality of base felt is affected by operation, and in production, each operation easily produces dust, affects the pollution of employee's healthy and environment.
Other its preparation process are for example: the name of application on 03 08th, 2010 is called " a kind of production method of glass fibre reinforced thermoplastic sheet " (number of applying for a patent: 201010118786.9, open notification number: CN101792552A, open date of declaration: patented technology 2010.08.04).This invention provides a kind of production method of glass fibre reinforced thermoplastic sheet, the technological process of production comprises: glass fibre unreels and dividing sinker, glass fibre infiltrates, dynamic powder adherence, cutting air-flow mixes, the baking composite setting, it is characterized in that Non-twisting glass fibre is after unreeling dividing sinker, glass fiber bundle after dividing sinker and glass monofilament are by infiltrating, dynamic powder adherence, drying is cut off after processing, glass fiber bundle and glass monofilament complete equably and mix by the air-flow mixing chamber with polypropylene (PP) powder mixed airflow, mixed material enters the air flow deflector dispersing chamber again, mixed material is disperseed under the effect of cutting of swirling eddy, become scattered about equably the base felt that forms unordered disorder on the conveyer belt of bottom.Due to the rear formation glass bundle that is uniformly dispersed of glass in this technique, the glass monofilament formed seldom, thereby under the effect of cutting of swirling eddy, can not fully be disperseed after glass bundle and the attached PP of monofilament bag, cause in sheet material voidage larger, the plate surface flatness is poor, in sheet material, PP content of powder ratio can't reduce, and board cost is higher.
The name of 05 month 22 days calendar year 2001 application is called " the stirring-spraying fluidized bed and application in preparing fibre reinforced composites " (number of applying for a patent: 01112947.6, open notification number: CN1327905A, open date of declaration: patented technology 2001.12.26).This invention provides a kind of stirring-spraying fluidized bed and application in preparing fibre reinforced composites, its of technological process of production employing is stirring-spraying fluidized bed, using air as fluidizing agent, in fluid bed by fluidisation with stir and to realize fully mixing of polymeric matrix and fiber, and fibre bundle is disperseed for the monofilament of adsorpting polymerization thing matrix, to reach the abundant infiltration of glass fiber yarn and basal body interface, by the enlarging separator, form the base felt.In this technique, glass all forms the glass bundle after disperseing, the glass monofilament formed seldom, the length of glass fibre is 4～20mm, in glass fibre and substrate mixture, the quality of glass fiber bundle is 30～40%, the content of PP powder is 70～40%, the density of sheet material is larger, but this art plate only can be for half structure material of automotive trim.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of sheet material shear behavior that makes and improves, increase tension and the anti-bending mechanics performance of all directions of sheet material, improve the expansion rate of composite board, reduce density, the production method of the cluster-shaped fiber thermoplastic composite sheet material of the intensity quality of increase composite board.
In order to solve the problems of the technologies described above, the production method of cluster-shaped fiber thermoplastic composite sheet material provided by the invention, comprise (1), fiber cutting, (2), pneumatic dispersion-mixing-adhesion, (3), mix and settle into net, (4), the dusting of base felt, (5), the baking composite setting, described (1), fiber cutting: fiber cutting becomes the filament of fixed length;
Described (2), pneumatic dispersion-mixing-adhesion: the filament after shearing enters into the jet of pneumatic dispersion mixing chamber under the effect of delivery air via conveyance conduit, after being subject to delivery air, rising diffusing air current and organizing the side direction stirring more cutting the mutual shear action of air-flow, the filament that enters into pneumatic dispersion mixing chamber obtains fully disperseing to form cluster-shaped fiber and fibre single thread; Simultaneously, the cluster-shaped fiber of dispersion and fibre single thread evenly mix and adhere to the mixed-powder sprayed into; Cluster-shaped fiber after disperseing, mix, adhering to and fibre single thread are stirred by ascending air and side direction and cut the effect that air-flow forms flow field, continuously by transfer passage, are delivered to the mixing expansion chamber;
Described (3), mix and settle into net: cluster-shaped fiber and fibre single thread enter the mixing expansion chamber, the cluster-shaped fiber that is stained with mixed-powder descends slowly and lightly in becoming net sedimentation bucket with fibre single thread and mixed-powder under the effect in gravity and flow field, the cluster-shaped fiber that becomes net sedimentation bucket will be stained with mixed-powder is deposited in on the net conveyer belt with fibre single thread and mixed-powder uniformly, successively the cluster-shaped fiber that is stained with mixed-powder of sedimentation and fibre single thread and mixed-powder have formed the mixed and disorderly unordered three-dimensional cluster-shaped fiber embryo felt of multiple-layer stacked, it is one fixed width, thickness, the even bulk base felt of cluster-shaped fiber.
Described (1), fiber cutting are achieved in that non-twist fiber roving are rolled and makes it be with upper electrostatic charge simultaneously, fibre bundle with electrostatic charge passes through the combing of licker-in card wire, further produce relative sliding between the monofilament of fibre bundle, loosen, disperse, the fibre bundle after dispersion and monofilament are sheared the filament that becomes fixed length.
Fiber after described dispersion and the sheared length of monofilament are 10mm～150mm.
In described step (2), pneumatic dispersion-mixing-adhesion: the mixed-powder sprayed into is with static.
In described step (2), pneumatic dispersion-mixing-adhesion: the unsteady gas plate that the transfer passage bottom is provided with provides the gas that floats to provide unsteady power to the cluster-shaped fiber in transfer passage and fibre single thread.
The flow of the air-flow of described unsteady gas plate is 10～60m
3/ h.
Described (3), mixing settle in net: cluster-shaped fiber and fibre single thread spray the mixed-powder that static electrification is arranged after entering and mixing expansion chamber.
In described step (2), pneumatic dispersion-mixing-adhesion: the flow of described delivery air is 5～20m
3/ h; The flow of the rising diffusing air current of described pneumatic dispersing chamber is 20～100m
3/ h.
In described step (2), pneumatic dispersion-mixing-adhesion: it is 40～120m that the side direction of described pneumatic dispersing chamber stirs the flow of cutting air-flow
3/ h.
In described step (2), pneumatic dispersion-mixing-adhesion: described side direction stirring is cut air-flow and is comprised that air-flow is cut in the clockwise stirring of side direction and side direction stirs and cuts air-flow counterclockwise.
Electrostatic charge 50～110KV on Fibrous band contracture described in above-mentioned steps (1).
Described mixed-powder is polypropylene, polyethylene, polyvinyl chloride, polyester, calcium carbonate, talcum powder, kaolin or fire retardant filler.
Described non-twist fiber roving is carbon fiber, glass fibre, flaxen fiber or wood-fibred.
Described mixed-powder particle diameter is 75 μ m～500 μ m.
In above-mentioned steps (2), in pneumatic dispersion-mixing-static adhesion process, the mass ratio of filament and mixed-powder is 70～80: 20～30.
Step (3) mixing settles in the net processing, and the mass ratio of fibre single thread and mixed-powder is 55～70: 30～45.
Adopt the production method of the cluster-shaped fiber thermoplastic composite sheet material of technique scheme, owing to having adopted fiber dispersion, static, shear step, on Fibrous band contracture after electrostatic charge, because the band like charges repels mutually, produce and loosen and displacement thereby make between fibre single thread, roll rubber roll in addition, licker-in, the interaction of air-flow, make between the monofilament of fibre bundle and further produce relative sliding, loosen, disperse, and require the length that is cut into certain-length to cut fibre bundle and monofilament according to plate property, thereby for providing, step (2) loosens, the fibre bundle and the monofilament that disperse.
In pneumatic dispersion-mixing-static adhesion process step, the fibre bundle that delivery air will loosen, disperse and monofilament are ejected in pneumatic dispersion mixing chamber, fibre bundle and monofilament are in the process with the operation of rising diffusing air current, owing to being subject to, side direction is clockwise, both direction stirs the shear action of cutting air-flow counterclockwise, makes fibre bundle obtain fully disperseing the formation cluster-shaped fiber; The mixed-powder sprayed into mouthful static that dusts when the cluster-shaped fiber after dispersion and fibre single thread move with air-flow is issued to and mixes and adhere in the effect of electrostatic field; Cluster-shaped fiber after disperseing, mix, adhering to and filament mixture act on because of the flow field that is subject to ascending air and side direction to stir the common formation of cutting air-flow, will successively by the gas plate that floats, transfer passage, be sent to and be mixed into net arrangement.
Mix and settle in the network process step, requirement according to Product Process, the cluster-shaped fiber that mixing adheres to and filament are by the electrostatic dusting zone time, make it further adhere to a certain amount of mixed-powder, the fibre single thread and the mixed-powder that adhere to mixed-powder descend slowly and lightly in becoming net sedimentation bucket under the acting in conjunction of gravity and air velocity distribution, become net sedimentation bucket that the filament of mixing and mixed-powder are deposited in on the net conveyer belt uniformly, the fiber of successive sedimentation and the mixed and disorderly unordered three-dimensional cluster-shaped fiber embryo felt that polypropylene powder has formed multiple-layer stacked, make one fixed width, thickness, the fiber of the unordered disorder of fiber of surface density, mixed-powder base felt, this system has less damage to fiber, fibre bundle disperses effective, and the orientation disorder disorder of fiber, the vertical and horizontal intensity indifference of sheet material after moulding, the fiber irregularity of sheet forming, all 1%～2%, becomes fibre single thread in net base felt to be made as 55～70: 30～45 with the mass ratio that adheres to mixed-powder is controlled, height stretching gadget is not needed to realize by increasing material unit are grammes per square metre, and lightweight material reducing effect is remarkable, and sheet material and processing cost are all lower.
In base felt dusting processing step, comprise the moulding leftover pieces of producing sheet material in mixture, the cotton-shaped material classified, that fragmentation is processed into, the feed back addition is 10～30%, and the leftover bits rubbish produced in automotive trim production can be recycled utilization.
The present invention is directed to existing technology and equipment makes fiber become the not enough and plate defect that causes of net, a kind of pneumatic by adopting, disperse, mix, static adheres to, settle into net, dusting, baking, the technological processes such as composite setting, make the long fibre bundle of cutting obtain disperseing fully to form cluster-shaped fiber, improve the even effect that fiber and mixed-powder adhere to, reduce the content of mixed-powder in the base felt, improve orientation and the fibre net structure of fiber in the base felt, simultaneously by the fiber of every group of pneumatic dispersion-web forming device of adjustment and the ratio of mixed-powder, make sheet material form the combination of sandwich structure, because the sheet material medium-length fibre exists in thermoplastic sheets with the cluster-shaped form, its molding mode is an overall structure, unlike traditional product, by paved in multi-layers, formed, do the used time in lateral external forces, there do not is delamination, lamellar spacing, the phenomenons such as layer and fault position, therefore its shear behavior is superior to like product, secondly the fiber existence form has isotropism, therefore the tension of its all directions and anti-bending mechanics superior performance, in like product, reduce vertical transverse strength ratio, another mixed-powder can be according to the market demand of sheet material, carries out modification and the processing such as fire-retardant, meets the characteristic demand of fibre sheet material, and in the embryo felt, fiber is not subject to the damage of mechanical fixed network, improve the expansion rate of composite board, reduced density, increased the intensity quality of composite board.
Technological process of the present invention is simple, and equipment investment is few, and energy consumption is low, when the solution wet processing exists contaminated wastewater defect and dry process to have the pollution defect problem of dust, is easy to form large-scale industrialized production.
The accompanying drawing explanation
Fig. 1 makes cluster-shaped fiber thermoplastic composite sheet material Whole Equipment figure.
Fig. 2 is that pneumatic dispersion-mixing-static adheres to, settles into the net arrangement structural representation.
Fig. 3 is along A-A line cut-away view in Fig. 2.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
From Fig. 1, Fig. 2 and Fig. 3, metal guide wheel and rubber tire 1, licker-in 2, directive wheel 3 and shearing break bar 4 are arranged in order rear docking cone bucket 5, and cone bucket 5 docks conveyance conduits 6;
A bottom is the tapered device that unsteady diffusing air current distributes and static distributes, its inner cone bucket 10 is provided with uniform rising diffusing air current spout 12 and 4 groups of electrostatic atomisers 13, inner cone bucket 10 is provided with jet 11,11 pairs of jets are connected to jet-stream wind entrance 7 and conveyance conduit 6, and outer cone bucket 9 is provided with the import 8 of the air-flow that floats;
A pneumatic dispersion mixing chamber 17 be connected with outer cone bucket 9, pneumatic dispersion mixing chamber 17 is provided with and stirs air-flow urceolus 16, the side direction that is provided with stirring air-flow urceolus 16 stirs and cuts air flow inlet 18, the clockwise side direction of being provided with pneumatic dispersion mixing chamber 17 stir cut air-flow spout 14 and counterclockwise side direction stir and cut air-flow spout 15, clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir and cut air-flow spout 15 each forms by four～six groups respectively, the side direction stirring is cut air-flow spout 14 and is cut air-flow spout 15 not in same plane with counterclockwise side direction stirring clockwise, pneumatic dispersion mixing chamber 17 axially on alternately arrange, clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir cut air-flow spout 15 along the drum shaft of pneumatic dispersion mixing chamber 17 to angle be 75～85 degree, the tangential angle of cylindrical shell circumference is 55～85 degree,
A transfer passage 21 be connected with pneumatic dispersion mixing chamber 17, unsteady gas plate 20 arranges along the bottom camber line of transfer passage 21, and along the mass transport direction, the uniform unsteady pore of 8～20 degree angle is arranged, and by unsteady gas plate 20, is provided with the air flow inlet 19 that floats;
A sedimentation mixing chamber 23 be connected with transfer passage 21 other ends, sedimentation mixing chamber 23 is provided with four groups of electrostatic dusting spouts 22, and bottom is for becoming net sedimentation bucket 24.
Become 24 outlets of net sedimentation bucket to being connected into net conveyer belt 25, net conveyer belt 25 front ends are to being connected to the first nonwoven running roller 28, become on net conveyer belt 25 and be provided with running roller 26 after each becomes net sedimentation bucket 24, become net conveyer belt 25 rear ends to being connected to dusting device 27, high-temperature baking device 29, glued membrane running roller 30, the second nonwoven running roller 34, composite roll 31, chill roll 32 and shearing knife 33.
The production method of cluster-shaped fiber thermoplastic composite sheet material adopts following steps:
(1), fiber dispersion, static, shear: when non-twist fiber roving rolls by metal guide wheel and rubber tire 1, make it be with electrostatic charge, fibre bundle with electrostatic charge passes through licker-in 2 card wire combings, due to the combing with licker-in 2 that rolls that is subject to metal and rubber roll 1, further produce relative sliding between the monofilament of fibre bundle, loosen, disperse, after fibre bundle after dispersion and monofilament enter shearing break bar 4 by directive wheel 3, be sheared and become the filament that length is 10mm～150mm, fibre bundle after shearing drops in cone bucket 5, it is 5～20m that jet-stream wind entrance 7 passes into flow
3the delivery air of/h, now fibre bundle is because the suction function that is subject to delivery air is brought into conveyance conduit 6,
(2), pneumatic dispersion-mixing-static adheres to: the filament after shearing enters into the jet 11 of pneumatic dispersion mixing chamber 17 under the effect of delivery air via conveyance conduit 6, be subject to delivery air, the rising diffusing air current of rising diffusing air current spout 12, and organize more clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir and cut after side direction that air-flow spout 15 sprays stirs and cut the mutual shear action of air-flow, make the fibre bundle that enters into pneumatic dispersion mixing chamber 17 obtain fully disperseing to form cluster-shaped fiber and fibre single thread, the flow of the rising diffusing air current of rising diffusing air current spout 12 is 20～100m
3/ h, clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir the side direction of cutting air-flow spout 15 to stir the flow of cutting air-flow be 40～120m
3/ h, simultaneously, the cluster-shaped fiber disperseed and fibre single thread and 4 groups of electrostatic atomisers 13 spray into the mixed-powder that the particle diameter of electrostatic charge 50～110KV is 75 μ m～500 μ m and are issued to even the mixing and adhesion in the effect of electrostatic field, and the mass ratio of filament and mixed-powder is 70～80: 20～30, cluster-shaped fiber after disperseing, mix, adhering to and fibre single thread are subject to ascending air and side direction to stir the effect that air-flow forms flow field of cutting, continuously by transfer passage 21, be delivered to and mix expansion chamber 23, the unsteady gas plate 20 that transfer passage 21 bottoms are provided with provides the gas that floats to provide unsteady power to cluster-shaped fiber and fibre single thread in transfer passage 21, and the flow of the air-flow of the gas plate 20 that floats is 10～60m
3/ h,
(3), mix and settle into net: cluster-shaped fiber and fibre single thread carry out the electrostatic mixed-powder by four groups of electrostatic dusting spouts 22 after entering and mixing expansion chamber 23, make it further adhere to a certain amount of mixed-powder, the mass ratio of fibre single thread and mixed-powder is 55～70: 30～45; The cluster-shaped fiber that is stained with mixed-powder descends slowly and lightly in becoming net sedimentation bucket 24 with fibre single thread and mixed-powder under the effect in gravity and flow field, the cluster-shaped fiber that becomes net sedimentation bucket 24 will be stained with mixed-powder is deposited in on net conveyer belt 25 with fibre single thread and mixed-powder uniformly, successively the cluster-shaped fiber that is stained with mixed-powder of sedimentation and fibre single thread and mixed-powder have formed the mixed and disorderly unordered three-dimensional cluster-shaped fiber embryo felt of multiple-layer stacked, i.e. one fixed width, thickness, the even bulk base felt of cluster-shaped fiber;
(4), base felt dusting: the bulk base felt of even cluster-shaped fiber into the net is processed base felt surface by dusting device 27 dustings after running roller 26 typings, makes its surface form 25g/m
2～45g/m
2the mixed-powder layer, to improve the flatness of plate surface, improve intensity quality and the apparent mass of composite board;
(5), baking composite setting: the base felt that step (4) is formed completes hydrofuge, softening, melting, plasticizing through high-temperature baking device 29; Base felt after plasticizing is through composite roll 31, chill roll 32 composite settings; Then complete the shearing of compound, the shearing knife 33 of nonwoven that the nonwoven running roller 28 of sheet material provides, glued membrane that glued membrane running roller 30 provides, formation has some strength, the continuous cluster-shaped fiber thermoplastic composite sheet material of thickness, and glass fibre strengthens plastic composite board material.
Above-mentioned mixed-powder is polypropylene, polyethylene, polyvinyl chloride, polyester, calcium carbonate, talcum powder, kaolin or fire retardant filler.
Above-mentioned non-twist fiber roving is carbon fiber, glass fibre, flaxen fiber or wood-fibred.
Metal guide wheel and rubber tire 1, licker-in 2, the directive wheel 3 of roving glass fiber bundle by this device in this technique, shear break bar 4, be treated as necessarily fibre bundle and the monofilament of loose, fixed length, the fibre bundle of cut-out and monofilament by delivery air through conveyance conduit 6 and jet 11 to pneumatic dispersion mixing chamber 17, fibre bundle and monofilament stir in delivery air, rising diffusing air current, clockwise and counterclockwise side direction and cut air-flow, reach under the effect of static mixed-powder air-flow, the abundant dispersion that has completed fibre bundle forms cluster-shaped fiber, and reaches the adhesion that mixes of fibre single thread and static mixed-powder, mixing the glass fiber adhered to delivers to and mixes expansion chamber 23 through transfer passage 21, mix the cluster-shaped fiber and the filament that adhere to and pass through electrostatic dusting, make a certain amount of static mixed-powder of its progressive adhesion, adhere to static mixed-powder fibre single thread and static mixed-powder, under the effect of gravity and air velocity distribution, descend slowly and lightly in becoming net sedimentation bucket 24, become net sedimentation bucket 24 that the filament of mixing and mixed-powder are deposited in on net conveyer belt 25 uniformly, technology requirement according to product, by the pneumatic combining form that is dispersed into net arrangement of varying number, make one fixed width, thickness, the cluster-shaped fiber of the unordered disorder of fiber of surface density, fibre single thread, mixed-powder base felt, the base felt is through typing, dusting, nonwoven, baking, glued membrane, composite setting, cooling and shaping, shear, complete the operations such as the typing of the compound and sheet material of softening, melting, glued membrane, nonwoven, cooling, curing, shearing, be prepared into there is some strength, glass fibre that thickness is continuous strengthens plastic composite board material.
The present invention compared with the prior art, because the sheet material medium-length fibre exists in thermoplastic sheets with the cluster-shaped form, its molding mode is an overall structure, unlike traditional product, by paved in multi-layers, formed, do the used time in lateral external forces, there are not the phenomenons such as delamination, lamellar spacing, layer and fault position, therefore its shear behavior is superior to like product; Secondly the fiber existence form has isotropism, therefore the tension of its all directions and anti-bending mechanics superior performance, in like product, reduce vertical transverse strength ratio; Another mixed-powder can be according to the market demand of sheet material, carry out modification and the processing such as fire-retardant, meet the characteristic demand of fibre sheet material, and in the embryo felt, fiber is not subject to the damage of mechanical fixed network, can also be by the fiber of every group of pneumatic stirring dispersing-web forming device of adjustment and the ratio of mixed-powder, form the combination of the sandwich structure of sheet material, improve the expansion rate of sheet material, reduce density, increase the quality of sheet material, this technological process simultaneously is simple, and equipment investment is few, energy consumption is low, environmental protection and easily form the advantages such as large-scale industrialized production.
The glass fibre that adopts this technique to prepare strengthens plastic composite board material, and after tested, the physical indexs such as this light weight board hot strength, stretch modulus, bending strength, bending modulus are superior.
By the following examples related content of the present invention is further illustrated.
Embodiment 1:
The diameter dimension of pneumatic dispersion mixing chamber 17 is 800mm, conveyance conduit 6 diameters be Φ 20mm, rising diffusing air current spout 12 diameter of phi 15mm, clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir the diameter of cutting air-flow spout 15 and be Φ 10mm.
Get the raw materials ready: alkali-free glass fibre 2400tex (roving, density 2.35g/cm
3, diameter 13 μ m), the glass fiber bundle sheared length is 50～75mm, 145#PP powder (density 0.91g/cm
3, 80 orders), the glue face adopts PP film 55g/m
2, nonwoven adopts the spunlace non-woven cloth 100g/m that is compounded with PE glue face
2(PE film 45g/m wherein
2, PET spunlace non-woven cloth 55g/m
2).
Glass delivery air speed is 4m/s, and rising diffusing air current speed is 3m/s, and it is 2.0m/s that side direction stirs the speed of cutting air-flow.
By the even base felt that settles into the mixed and disorderly unordered three-dimensional arrangement that net arrangement makes, the devices such as the base felt is compound through dusting, nonwoven, baking, glued membrane, composite roll, cooling and shaping, shearing, complete the operations such as the typing of the compound and sheet material of softening, melting, glued membrane, nonwoven, cooling, curing, shearing, the glass fibre be prepared into strengthens plastic composite board material, sheet material surface density 1570g/m
2, panel density 0.69g/cm
3, sheet metal thickness δ 3.2mm, after tested, plate stretch intensity 13.72Mpa, bending strength 10.97Mpa, elongation at break 3.12%.
Embodiment 2:
The diameter dimension of pneumatic dispersion mixing chamber 17 is 600mm, conveyance conduit 6 diameters be Φ 18mm, rising diffusing air current spout 12 diameter of phi 15mm, clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir the diameter of cutting air-flow spout 15 and be Φ 10mm.
Get the raw materials ready: alkali-free glass fibre 2400tex (roving, density 2.35g/cm
3, diameter 13 μ m), the glass fiber bundle sheared length is 50～75mm, 145#PP powder (density 0.91g/cm
3, 80 orders), polyethylene (PE) powder (density 0.95g/cm
3, 60 orders), the glue face adopts PP film 55g/m
2, nonwoven adopts needle punched non-woven fabrics 80g/m
2.
Glass delivery air speed is 5m/s, and rising diffusing air current speed is 4m/s, and it is 3m/s that side direction stirs the speed of cutting air-flow.
By the even base felt that settles into the mixed and disorderly unordered three-dimensional arrangement that net arrangement makes, the devices such as the base felt is compound through dusting, nonwoven, baking, glued membrane, composite roll, cooling and shaping, shearing, complete the operations such as the typing of the compound and sheet material of softening, melting, glued membrane, nonwoven, cooling, curing, shearing, the glass fibre be prepared into strengthens plastic composite board material, sheet material surface density 1550g/m
2, panel density 0.62g/cm
3, sheet metal thickness δ 3.0mm, after tested, plate stretch intensity 14.78Mpa, bending strength 12.68Mpa, elongation at break 2.96%.
Embodiment 3:
The diameter dimension of pneumatic dispersion mixing chamber 17 is 500mm, the diameter of phi 15mm that the glass pipe diameter is Φ 25mm, rising diffusing air current spout 12, clockwise side direction stir cut air-flow spout 14 and counterclockwise side direction stir the diameter of cutting air-flow spout 15 and be Φ 8mm.
Get the raw materials ready: alkali-free glass fibre 2400tex (roving, density 2.35g/cm
3, diameter 13 μ m), the glass fiber bundle sheared length is 70～75mm, 145#PP powder (density 0.91g/cm
3, 80 orders), polyethylene (PE) powder (density 0.95g/cm
3, 60 orders), the glue face adopts PP film 55g/m
2, nonwoven adopts needle punched non-woven fabrics 80g/m
2.
Glass delivery air speed is 3.5m/s, and rising diffusing air current speed is 3m/s, and it is 2.5m/s that side direction stirs the speed of cutting air-flow.
By the even base felt that settles into the mixed and disorderly unordered three-dimensional arrangement that net arrangement makes, the devices such as the base felt is compound through dusting, nonwoven, baking, glued membrane, composite roll, cooling and shaping, shearing, complete the operations such as the typing of the compound and sheet material of softening, melting, glued membrane, nonwoven, cooling, curing, shearing, the glass fibre be prepared into strengthens plastic composite board material, sheet material surface density 1620g/m
2, panel density 0.58g/cm
3, sheet metal thickness δ 3.5mm, after tested, plate stretch intensity 15.16Mpa, bending strength 12.83Mpa, elongation at break 3.76%.
Claims (8)
- (5), the baking composite setting (4), the dusting of base felt (3), mix and settle into net (2), pneumatic dispersion-mixing-adhesion 1. (1) the production method of a cluster-shaped fiber thermoplastic composite sheet material, comprise, fiber cutting,,,,, it is characterized in that:Described (1), fiber cutting: non-twist fiber roving is rolled and makes it be with upper electrostatic charge simultaneously, fibre bundle with electrostatic charge passes through the combing of licker-in card wire, further produce relative sliding between the monofilament of fibre bundle, loosen, disperse, the fibre bundle after dispersion and monofilament are sheared the filament that becomes fixed length;Described (2), pneumatic dispersion-mixing-adhesion: the filament after shearing enters into the jet of pneumatic dispersion mixing chamber under the effect of delivery air via conveyance conduit, after being subject to delivery air, rising diffusing air current and organizing the side direction stirring more cutting the mutual shear action of air-flow, the filament that enters into pneumatic dispersion mixing chamber obtains fully disperseing to form cluster-shaped fiber and fibre single thread; Simultaneously, the cluster-shaped fiber of dispersion and fibre single thread evenly mix and adhere to the mixed-powder sprayed into, and the mixed-powder sprayed into is with static; Cluster-shaped fiber after disperseing, mix, adhering to and fibre single thread are stirred by ascending air and side direction and cut the effect that air-flow forms flow field, continuously by transfer passage, are delivered to the mixing expansion chamber; Described mixed-powder is polypropylene, polyethylene, polyvinyl chloride or polyester;(3) described, mix and settle into net: cluster-shaped fiber and fibre single thread enter the mixing expansion chamber, the cluster-shaped fiber that is stained with mixed-powder descends slowly and lightly in becoming net sedimentation bucket with fibre single thread and mixed-powder under the effect in gravity and flow field, the cluster-shaped fiber that becomes net sedimentation bucket will be stained with mixed-powder is deposited in on the net conveyer belt with fibre single thread and mixed-powder uniformly, successively the cluster-shaped fiber that is stained with mixed-powder of sedimentation and fibre single thread and mixed-powder have formed the mixed and disorderly unordered three-dimensional cluster-shaped fiber embryo felt of multiple-layer stacked, it is one fixed width, thickness, the even bulk base felt of cluster-shaped fiber.
- 2. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 1, it is characterized in that: the fiber after described dispersion and the sheared length of monofilament are 10mm～150mm.
- 3. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 1 and 2 is characterized in that: described step (2), in pneumatic dispersion-mixing-adhesion: the unsteady gas plate that the transfer passage bottom is provided with provides the gas that floats to provide unsteady power to the cluster-shaped fiber in transfer passage and fibre single thread.
- 4. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 5, it is characterized in that: the flow of the air-flow of described unsteady gas plate is 10～60m 3/ h.
- 5. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 1 and 2 is characterized in that: described (3), mix and settle in net: cluster-shaped fiber and fibre single thread spray the mixed-powder that static electrification is arranged after entering and mixing expansion chamber.
- 6. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 1 and 2 is characterized in that: described step (2), in pneumatic dispersion-mixing-adhesion: the flow of described delivery air is 5～20m 3/ h; The flow of the rising diffusing air current of described pneumatic dispersing chamber is 20～100m 3/ h.
- 7. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 1 and 2 is characterized in that: described step (2), in pneumatic dispersion-mixing-adhesion: it is 40～120m that the side direction of described pneumatic dispersing chamber stirs the flow of cutting air-flow 3/ h.
- 8. the production method of cluster-shaped fiber thermoplastic composite sheet material according to claim 1 and 2 is characterized in that: described step (2), in pneumatic dispersion-mixing-adhesion: described side direction stirs cuts air-flow and comprises that side direction stirs clockwise and cut air-flow and side direction stirs and cuts air-flow counterclockwise.
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| CN106367885A (en) * | 2016-08-31 | 2017-02-01 | 芜湖利通新材料有限公司 | Process for producing sound isolating cotton felt |
| CN106409525B (en) * | 2016-10-11 | 2018-05-18 | 中国科学院山西煤炭化学研究所 | Graphene, conducting fibre composite material and its with the preparation method of multi-stage porous carbon composite material, its product and application |
| JP7365847B2 (en) * | 2019-10-17 | 2023-10-20 | 三菱重工業株式会社 | Composite material with reinforced fiber bundles and bolted structure |
| CN110965153A (en) * | 2019-11-29 | 2020-04-07 | 界首市佳美棉业有限公司 | PET short fiber feeding device |
| CN112661524B (en) * | 2020-12-21 | 2023-03-17 | 山东工业陶瓷研究设计院有限公司 | Mullite fiber reinforced quartz ceramic composite material and preparation method thereof |
| CN114290524B (en) * | 2021-12-03 | 2024-03-26 | 东华大学 | Device for dispersing bundled fibers into single fibers |
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