CN101792552B - Method for manufacturing glass fibre reinforced thermoplastic sheet - Google Patents
Method for manufacturing glass fibre reinforced thermoplastic sheet Download PDFInfo
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- CN101792552B CN101792552B CN2010101187869A CN201010118786A CN101792552B CN 101792552 B CN101792552 B CN 101792552B CN 2010101187869 A CN2010101187869 A CN 2010101187869A CN 201010118786 A CN201010118786 A CN 201010118786A CN 101792552 B CN101792552 B CN 101792552B
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- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 20
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 15
- 239000004743 Polypropylene Substances 0.000 claims abstract description 80
- 229920001155 polypropylene Polymers 0.000 claims abstract description 80
- 239000000843 powder Substances 0.000 claims abstract description 67
- -1 polypropylene Polymers 0.000 claims abstract description 45
- 238000002156 mixing Methods 0.000 claims abstract description 32
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- 239000000203 mixture Substances 0.000 claims description 29
- 210000001161 mammalian embryo Anatomy 0.000 claims description 19
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 6
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Abstract
The invention discloses a method for manufacturing a glass fibre reinforced thermoplastic sheet, which comprises the following steps: (1) uncoiling and splitting glass fibres, namely splitting untwisted rough yarns; (2) soaking the glass fibres, namely uniformly and fully wetting flocculent foaming bodies obtained on the surfaces of the glass fibres; (3) dynamic powder adhering, namely atomizing mixed powder of the glass fibres and polypropylene (PP) so as to be uniformly adhered to the glass fibres; (4) slitting and gas-flow mixing, namely cutting the glass fibres obtained by the step (3), performing gas-flow mixing treatment on the cut glass fibres falling into a mixing chamber to prepare the mixed powder of the glass fibres and the polypropylene (PP), adding the powder into a deflection loosening chamber for loosening under the action of air flow, and dispersing the loosened powder onto a conveyor belt to form a blank felt; and (5) baking, compositing and shaping, namely baking theblank felt obtained by the step (4) at a high temperature for plasticizing, compositing and shaping the plasticized blank felt, and compositing an adhesive film and a non-woven fabric to form a sheet. The sheet has the advantages of no strength difference in the longitudinal and horizontal directions, obvious weight reducing and material reducing effect, high fire resistance, and recyclable leftovers and scraps in the production process.
Description
Technical field:
The present invention relates to automobile and other vehicles inside gadget fields, specifically refer to a kind of production method of glass fibre reinforced thermoplastic sheet.
Background technology:
At present domestic and international automotive trim glass fibre reinforced thermoplastic sheet (Glass mat reinforced thermoplastics) commonly used, be called for short GMT sheet material, because the limitation of adhesive-bonded combing, lapping, Nomex technology, cause the limitation of glass fibre directivity, fiber most of orientation in the lapping process is horizontal, and the vertical transverse strength ratio that makes sheet material is all greater than 2 times; Because glass fibre and polypropylene (PP) fiber difference of specific gravity is bigger, basic felt homogeneity is relatively poor in combing, lapping process, and percentage of variation is all 4%～7%; Glass fibre damages bigger in shredding, combing, needling process, has weakened the intensity of sheet material; Because the mixing of polypropylene powder and polypropylene fibre and glass fibre, coat inhomogeneously, can only satisfy service requirements to improve polyacrylic content, thereby cause the cost of sheet material higher.At present, the GMT sheet material that domestic adhesive-bonded technology is produced can't satisfy the quality requirements of automotive interior material fully, as characteristic index such as height stretching, lightweight, fire-retardant, environmental protection.Lightweight fiberglass strengthens thermoplastic sheet (GMT) in the market, because the difference of vertical transverse strength, height stretching gadget is remained by increase material unit surface grammes per square metre realize that the effect of lightweight material reducing is not remarkable; In addition because the limitation of combing needling process, acupuncture base felt raw material all adopts glass fibre to become net with polypropylene (PP) blending in of fibers, fire retardant adds difficulty, and design fire-retardant and rate of combustion only limits to carry out surface treatment at the sheet material compound working procedure, and the flame retardant resistance of sheet material is relatively poor.
Along with developing rapidly of domestic automobile industry, automotive industry is left the waste material of society for also in continuous growth, the leftover bits that automotive trim production is produced have caused environmental pollution, can not burn, bury for the leftover bits that every day, pile up like a mountain, be the difficult problem of numerous board materials production producers of puzzlement and automotive upholstery producer.The automobile recovery and reuse of waste rate of developed country has reached 85%, and particularly European Union member countries make laws, and adopts the way of listing and producing, and who produces and be responsible for recovery whom, otherwise inaccurate production.
Summary of the invention:
The object of the present invention is to provide the basic indifference of a kind of vertical transverse strength, lightweight material reducing effect significantly, the production method of base material mixes more evenly, cost is low, good flame resistance, leftover bits can recycle and reuse, cost performance is high glass fibre reinforced thermoplastic sheet.
The object of the present invention is achieved like this, the production method of glass fibre reinforced thermoplastic sheet comprises the steps:
(1), glass fibre unreels and dividing sinker: roving is carried out dividing sinker, press arts demand, make it form successive monofilament or multifilament;
(2), glass fibre soaks into: soak into device by glass fibre, step " (1) " established continuous monofilament or multifibres fiberglass surfacing are soaked into fully with polar handle;
(3), dynamic powder adherence:, polypropylene (PP) mixed powder that atomizes is sticked to step " (2) " equably soaked on the glass fibre of handling with polar by dynamic powder adherence device;
(4), cutting air-flow mixes: by cutting the air-flow mixing device, with the glass fibre after the dynamic powder adherence of step " (3) ", cut off through after the drying treatment, glass fibre is finished equably by the air-flow mixing section with polypropylene (PP) powder mixed airflow and is mixed, mixture enters the air flow deflector dispersing chamber again, make mixture under the effect of cutting of swirling eddy, obtain disperseing, become scattered about the embryo felt that forms unordered disorder on the travelling belt of bottom equably;
(5), baking composite setting: step " (4) " embryo felt is reached purposes such as hydrofuge, softening, fusion, plasticizing through high bake,, form glass fibre reinforced thermoplastic sheet (GMT) by composite setting.
Described dynamic powder adherence by dynamic powder adherence device, makes glass fibre and polypropylene (PP) mixed powder be with positive and negative charge respectively.
Described dynamic vaporific powder diameter is at 0.1nm～100 μ m;
Described glass fibre length can be cut into 12.5mm～150mm;
In the air-flow combination treatment that step " (4) " atomizing mixing section carries out, this high pressure draft contains mixed powders such as fire retardant (nitrogen phosphorus composition), stablizer, dispersion agent, lubricant, swelling agent.
Because above-mentioned making has adopted glass fibre to soak into processing step, makes glass fibre wetting fully, by changing the steeping fluid composition, make glass fibre after process is soaked into, the surface connects polar group, improves bond properties.
Dynamic powder adherence processing step: by polypropylene (PP) powder and fire retardant and other relevant auxiliary agent powder of the atomizing of air compression atomizing device, at glass fibre during by dynamic powder adherence device, stick to its surface equably, the thickness of powder is controlled by the adjusting process parameter, thereby make in embryo felt plasticizing making sheet process, can improve the bounding force between the glass fibre effectively, can reduce polyacrylic content effectively again, reduce cost, increase the flame retardant effect of sheet material, improve performances such as stretching, flexural strength.
Vaporific powdered material realizes that by air compression atomizing device air compression atomizing device is to adopt existing installation on the market, as the equipment of grand horse equipment company limited.
Cut air-flow hybrid technique step: with dynamic powder adherence, the glass fibre of drying treatment, shear the length that becomes certain-length according to the sheet material design requirements and cut fiber, when the length after the cut-out is cut glass fibre and is fallen within opening for feed, polypropylene (PP) mixture is under the formed suction function of air-flow, glass fibre is brought to mixing section rapidly, under the effect of air-flow, glass fibre and polypropylene (PP) mixture obtains further uniform mixing, mixed logistics enters the air flow deflector dispersing chamber, under the effect of cutting of swirling eddy, obtain disperseing, become scattered about equably on the travelling belt of bottom.This method is to the glass fibre not damaged, the orientational disorder disorder of fiber, the intensity indifference of the vertical, horizontal of sheet material after the moulding; The fiber percentage of variation of sheet material need not realize that lightweight material reducing effect is remarkable by increasing material unit surface grammes per square metre all 1%～3% to height stretching gadget; The fire-retardant pre-treatment of glass fibre and cut the fire retardant that air-flow adds in mixing obviously improves the flame retardant effect of sheet material; Spray into the powder of mixing section, except polypropylene powder, also comprise other auxiliary agents such as mineral filler, sheet material and moulding corner feed back, can reduce material cost greatly like this.
The invention will be further described below in conjunction with accompanying drawing
Description of drawings:
Fig. 1 is a glass fibre reinforced thermoplastic sheet manufacture craft schema
Fig. 2 soaks into the apparatus structure synoptic diagram for glass fibre
Fig. 3 is Fig. 2 A-A sectional structure synoptic diagram
Fig. 4 is dynamic powder adherence apparatus structure synoptic diagram
Fig. 5 is for cutting air-flow mixing device structural representation
Fig. 6 is Fig. 5 A-A sectional structure synoptic diagram
Embodiment:
With reference to Fig. 1---Fig. 6, the production method of glass fibre reinforced thermoplastic sheet comprises the steps:
(1), glass fibre unreels and dividing sinker: roving is carried out dividing sinker, press arts demand, make it form monofilament or multifibres continuous fibre;
(2), glass fibre soaks into: by glass infiltration apparatus 2, step " (1) " has been formed successive monofilament or multifibres fiberglass surfacing soaked into fully with polar and handle;
(3), dynamic powder adherence:, polypropylene (PP) mixed powder that atomizes is sticked to soaking on the glass fibre of handling with polar of step " (2) " equably by dynamic powder adherence device 4;
(4), cutting air-flow mixes: by cutting air-flow mixing device 6, with the glass fibre after the dynamic powder adherence of step " (3) ", cut off through after the drying treatment, glass fibre is finished equably by air-flow mixing section 30 with polypropylene (PP) powder mixed airflow and is mixed, mixture flow 2A enters air flow deflector dispersing chamber 32, make mixture under the effect of cutting of swirling eddy, obtain disperseing, become scattered about the embryo felt 2B that forms unordered disorder on the travelling belt 7 of bottom equably;
(5), baking composite setting: step " (4) " embryo felt is reached hydrofuge, softening, fusion, plasticizing through overbaking, and the embryo felt 2B after the plasticizing forms glass fibre reinforced thermoplastic sheet (GMT) through non-woven fabrics, glued membrane composite setting.
Described dynamic powder adherence by dynamic powder adherence device 4, makes glass fibre and polypropylene (PP) mixed powder be with positive and negative charge respectively.
Described dynamic vaporific powder diameter is at 0.1nm～100 μ m;
Described glass fibre length can be cut into 12.5mm～150mm;
After glass fibre 24 unreels by glass fibre and divides yarn feeding device 1 to handle in this technology, soak into device 2 by glass fibre, glass fibre after surface treatment is finished the adhesion of the mixed powder of polypropylene (PP) and other auxiliary agents to glass fibre by dynamic powder adherence device 4; After glass fibre drying device 5 drying treatment after the adhesion, be brought into and cut air-flow mixing device 6, be prepared into glass fibre, polypropylene (PP) the powder mixture 2A of unordered disorder, become scattered about driving and conveying belt 7, form unordered disorderly embryo felt 2B; By transmission conveying appliance 7, be delivered to apparatus for baking 8, embryo felt 2B is through apparatus for baking 8 baking, reaches hydrofuge, softening, fusion, plasticizing purpose.Embryo felt 2B after the plasticizing finishes compound, the typing of sheet material through composite setting device 9.Formation has certain intensity, thickness successive glass fibre reinforced thermoplastic sheet, and sheet material to the processing of cutting means 10, reaches the sheet material 11 of process requirement through in length and breadth continuously.
Glass fibre unreels the branch yarn feeding device, is for roving being carried out dividing sinker, making its continuous fibre that forms monofilament or many monofilament, to satisfy down to the sufficient infiltration requirement of operation to glass fibre.
Glass fibre soaks into device, is a kind of fiberglass surfacing treatment unit, comprises agitator motor 12, swivel plate 13, foamed pot 16.Be provided with swivel plate 13 in the foamed pot 16, moving teeter column 19, quiet teeter column 20, compressed air inlet 14 and steeping fluid inlet 15.Moving teeter column 19 is fixed on the swivel plate 13, and quiet teeter column 20 is contained on the base plate 17, and base plate is equipped with filtering net 18 17 times.When steeping fluid and air for continuous constantly entered foamed pot 16, agitator motor 12 drove moving teeter column 19 rotations, and whole steeping fluid is stirred, and makes its and quiet teeter column 20 that certain speed of relative movement be arranged, and forms cutting apart and stirring steeping fluid.Used steeping fluid contains a large amount of tensio-active agents, when steeping fluid is stirred, air can enter in the liquid, tensio-active agent can carry out embedding to air, in whole steeping fluid, just form a large amount of bubbles like this, the foam that generates in the foamed pot forms the foam with homogeneous diameter through filter screen 18, the two rollers 3 of the level that enters.When glass fibre 24, when entering the two roller 3 of level with certain speed, the foam on the two rollers 3 of the level that is deposited in will be handled fiberglass surfacing.
Dynamic powder adherence device, shell 22 inner chambers divide two parts, and the bottom is a taper store holder 26, and top is the mixing section 21 of square container, described taper store holder 26 bottoms are provided with material outlet, and a side of mixing section 21 and the plane of symmetry thereof are provided with rectangular glass fibre inlet; The tourelle 25 of a positively charged; Pretreated glass fiber bundle 24 lotus that becomes positively charged during by tourelle 25, and enter mixing section 21, vaporific mixed powder is in dust gun 23 is sprayed on mixing section 21, have electrostatic power unit on the dust gun 23, make through negative charge on the mixed powder band of dust gun 23, mixed powder evenly sticks under the electrostatic effect above the glass fibre 24 by mixing section, reach fully evenly adhering to of mixed powder and glass fiber bundle, the glass fibre 24 of the band coating layer that forms, tourelle 25, dust gun 23 be static electrification not also.
The mixed powder that does not stick to glass fibre 24 surfaces falls into taper store holder 26, and transfers to cylindrical Powder Recovery jar 27 by outlet.
Described mixed powder is the mixture that includes toner and auxiliary agent, comprises in fire retardant, oxidation inhibitor, softening agent, tinting material, coupling agent, the stablizer one or more.
Cut the air-flow mixing device, glass cuts off break bar 29, rubber tire 28, mixing section 30, airflow nozzle 31 and air flow deflector dispersing chamber 32, dispersing nozzle 33, airflow nozzle 31 can be provided with 1～4 at the mixing section periphery, glass cuts off break bar 29 glass fibre 24 is sheared the fiber that becomes certain-length, the glass fibre that cuts off falls into cuts air-flow mixing section 30 opening for feeds, polypropylene (PP) mixture is under the formed suction function of air-flow, glass fibre is brought to mixing section 30 rapidly, under the effect of air-flow, glass fibre with
Polypropylene (PP)Mixture 2A obtains further uniform mixing, and mixed logistics enters air flow deflector dispersing chamber 32, cuts at the air-flow of dispersing nozzle 33 generations to obtain under the effect disperseing, and becomes scattered about equably on the travelling belt of bottom, forms the embryo felt of unordered disorder.Glass fibre length can be cut into the length of 12.5mm～150mm.
Cutting the air-flow mixture comprises: polypropylene (PP) such as polypropylene (PP) 140#, polyethylene (PE) or polypropylene (PP) and polyethylene (PE) mixture, relevant auxiliary agent etc.Relevant auxiliary agent comprises solid-state and liquid two kinds of forms, and solid-state have: fire retardant (nitrogen phosphorus composition 4～8%), stablizer (0.001～1%), dispersion agent (0.05～2%), lubricant (3～5%), swelling agent (1～3%); Liquid state has: fire retardant (nitrogen phosphorus composition 4～8%), liquid highly compressed carbonic acid gas (CO
2), nitrogen (N
2), air etc.
E Foerderanlage 7, apparatus for baking 8, composite setting device 9 among the present invention, all adopt the sophisticated processing unit of present every profession and trade to shear 10 etc. in length and breadth, glass fibre polypropylene (PP) the powder embryo felt hydrofuge of the unordered disorder of the certain width that will form by said apparatus, thickness, area density, softening, fusion, compound, typing, cooling, solidify, form glass fibre reinforced thermoplastic sheet (GMT).
The present invention also can be widely used in building materials, medical facilities, sports equipment field.
Embodiment 1
Get the raw materials ready: alkali free glass fibre 200kg (roving, density 2.35g/cm3, diameter 12 μ m), 150#PP powder 100kg (density 0.91g/cm3,60 orders～120 orders), polyethylene (PE) powder 20kg (density 0.95g/cm3,60 orders～120 orders);
Soak into relevant auxiliary agent: stearic acid 35%, thinner 64.5%, silane coupling agent (KH550) 0.5%.
Dynamic powder adherence auxiliary agent: 150# polypropylene (PP) powder 20kg (diameter 0.1nm～50 μ m), fire retardant (nitrogen phosphorus composition) 5kg, stablizer 0.5kg.
Cut the air-flow mixed aid: fire retardant (nitrogen phosphorus composition) 10kg, stablizer 1.5kg, dispersion agent 3.0kg, lubricant 10Kg, swelling agent 6kg;
According to the design of sheet material and the requirement of operation, material is 55: 40: 5 in the ratio of glass fibre and polypropylene (PP) powder and relevant auxiliary agent in the sheet material, the fabric width 1800mm of sheet material.
The alkali free glass fibre volume forms the continuous fibre of uniform monofilament or many monofilament through unreeling dividing sinker.
Glass fibre soaks into: continuous fibre is handled through soaking into, and it is evenly wetting fully that the fiberglass surfacing that passes through is obtained, the proportioning stearic acid 35% of infiltrate, thinner 64.5%, silane coupling agent (KH550) 0.5%.
Dynamic powder adherence: the continuous dynamic powder adherence device of glass fibre process that soaks into after handling makes that fiberglass surfacing evenly adheres to one deck polypropylene (PP), the mixed powder of the auxiliary agent composition of being correlated with.Improve the bonding dynamics of sheet material glass and glass in plasticizing forming, stretching, the crooked equal strength of increase sheet material.This powder is mixed and is formed by 150# polypropylene (PP) powder (diameter 0.1nm～50 μ m), fire retardant (nitrogen phosphorus composition), stablizer.
Cutting air-flow mixes: continuous glass fibre after drying enters cuts the air-flow mixing device, further mixes and disperses, by the flow of adjustment glass and auxiliary agent, makes the embryo felt of width 2000mm, thickness 80mm, the unordered disorder of area density 1500g/m2.
Be delivered to apparatus for baking by transmission conveying appliance, the embryo felt reaches purposes such as hydrofuge, softening, fusion, plasticizing through overbaking, through non-woven fabrics, glued membrane composite setting, make and have the continuous light GMT sheet material that thickness is 4.5mm, sheet material to the processing of cutting means, is prepared into 2000mm * 1800mm * δ 4.5mm * 1450g/m through in length and breadth continuously
2Light GMT sheet material.
Physical index is seen attached list.
Embodiment 2
Processing parameter is constant, only cancels dynamic powder adherence fire retardant, cuts air-flow combination treatment glass fibre length 130mm.
Get the raw materials ready: alkali free glass fibre 200kg (roving, density 2.35g/cm3, diameter 12 μ m), 150#PP powder 100kg (density 0.91g/cm3,60 orders～120 orders), polyethylene (PE) powder 20kg (density 0.95g/cm3,60 orders～120 orders);
Soak into relevant auxiliary agent: stearic acid 35%, thinner 64.5%, silane coupling agent (KH550) 0.5%.
Dynamic powder adherence auxiliary agent: 150# polypropylene (PP) powder 20kg (diameter 0.1nm～50 μ m), stablizer 0.5kg.
Cut the air-flow mixed aid: fire retardant (nitrogen phosphorus composition) 10kg, stablizer 1.5kg, dispersion agent 3.0kg, lubricant 10Kg, swelling agent 6kg;
According to the design of sheet material and the requirement of operation, material is 55: 40: 5 in the ratio of glass fibre and polypropylene (PP) powder and relevant auxiliary agent in the sheet material, the fabric width 1800mm of sheet material.
The alkali free glass fibre volume forms the continuous fibre of uniform monofilament or many monofilament through unreeling dividing sinker.
Glass fibre soaks into: continuous fibre is handled through soaking into, and it is evenly wetting fully that the fiberglass surfacing that passes through is obtained, the proportioning stearic acid 35% of infiltrate, thinner 64.5%, silane coupling agent (KH550) 0.5%.
Dynamic powder adherence: the continuous dynamic powder adherence device of glass fibre process that soaks into after handling makes that fiberglass surfacing evenly adheres to one deck polypropylene (PP), the mixed powder of the auxiliary agent composition of being correlated with.Improve the bonding dynamics of sheet material glass and glass in plasticizing forming, stretching, the crooked equal strength of increase sheet material.This powder is mixed and is formed by 150# polypropylene (PP) powder (diameter 0.1nm～50 μ m), fire retardant (nitrogen phosphorus composition), stablizer.
Cutting air-flow mixes: continuous glass fibre after drying enters cuts the air-flow mixing device, further mixes and disperses, by the flow of adjustment glass and auxiliary agent, makes the embryo felt of width 2000mm, thickness 80mm, the unordered disorder of area density 1500g/m2.
Be delivered to apparatus for baking by transmission conveying appliance, the embryo felt reaches purposes such as hydrofuge, softening, fusion, plasticizing through overbaking, through non-woven fabrics, glued membrane composite setting, make and have the continuous light GMT sheet material that thickness is 4.5mm, sheet material to the processing of cutting means, is prepared into 2000mm * 1800mm * δ 4.5mm * 1450g/m through in length and breadth continuously
2Light GMT sheet material.
Physical index is seen attached list.
Embodiment 3
The manufacture craft parameter constant is only got and is adjusted that material in glass fibre with the ratio that polypropylene (PP) reaches relevant auxiliary agent is in the sheet material: 60: 35: 5, cuts air-flow combination treatment glass fibre length 90mm.
Get the raw materials ready: alkali free glass fibre 200kg (roving, density 2.35g/cm3, diameter 12 μ m), 150#PP powder 100kg (density 0.91g/cm3,60 orders～120 orders), polyethylene (PE) powder 20kg (density 0.95g/cm3,60 orders～120 orders);
Soak into relevant auxiliary agent: stearic acid 35%, thinner 64.5%, silane coupling agent (KH550) 0.5%.
Dynamic powder adherence auxiliary agent: 150# polypropylene (PP) powder 20kg (diameter 0.1nm～50 μ m), fire retardant (nitrogen phosphorus composition) 5kg, stablizer 0.5kg.
Cut the air-flow mixed aid: fire retardant (nitrogen phosphorus composition) 10kg, stablizer 1.5kg, dispersion agent 3.0kg, lubricant 10Kg, swelling agent 6kg;
According to the design of sheet material and the requirement of operation, material is 60: 35: 5 in the ratio of glass fibre and polypropylene (PP) powder and relevant auxiliary agent in the sheet material, the fabric width 1800mm of sheet material.
The alkali free glass fibre volume forms the continuous fibre of uniform monofilament or many monofilament through unreeling dividing sinker.
Glass fibre soaks into: continuous fibre is handled through soaking into, and it is evenly wetting fully that the fiberglass surfacing that passes through is obtained, the proportioning stearic acid 35% of infiltrate, thinner 64.5%, silane coupling agent (KH550) 0.5%.
Dynamic powder adherence: the continuous dynamic powder adherence device of glass fibre process that soaks into after handling makes that fiberglass surfacing evenly adheres to one deck polypropylene (PP), the mixed powder of the auxiliary agent composition of being correlated with.Improve the bonding dynamics of sheet material glass and glass in plasticizing forming, stretching, the crooked equal strength of increase sheet material.This powder is mixed and is formed by 150# polypropylene (PP) powder (diameter 0.1nm～50 μ m), fire retardant (nitrogen phosphorus composition), stablizer.
Cutting air-flow mixes: continuous glass fibre after drying enters cuts the air-flow mixing device, further mixes and disperses, by the flow of adjustment glass and auxiliary agent, makes the embryo felt of width 2000mm, thickness 80mm, the unordered disorder of area density 1500g/m2.
Be delivered to apparatus for baking by transmission conveying appliance, the embryo felt reaches purposes such as hydrofuge, softening, fusion, plasticizing through overbaking, through non-woven fabrics, glued membrane composite setting, make and have the continuous light GMT sheet material that thickness is 4.5mm, sheet material to the processing of cutting means, is prepared into 2000mm * 1800mm * δ 4.5mm * 1450g/m through in length and breadth continuously
2Light GMT sheet material.
Physical index is seen attached list.
Claims (4)
1. the production method of a glass fibre reinforced thermoplastic sheet is characterized in that: comprise the steps:
(1), glass fibre unreels and dividing sinker: roving is carried out dividing sinker, press arts demand, make it form successive monofilament or multifilament;
(2), glass fibre soaks into: soak into device by glass fibre, step " (1) " established continuous monofilament or multifibres fiberglass surfacing are soaked into fully with polar handle;
(3), dynamic powder adherence:, polypropylene (PP) mixed powder that atomizes is sticked to step " (2) " equably soaked on the glass fibre of handling with polar by dynamic powder adherence device;
(4), cutting air-flow mixes: by cutting the air-flow mixing device, with the glass fibre after the dynamic powder adherence of step " (3) ", cut off through after the drying treatment, glass fibre is finished equably by the air-flow mixing section with polypropylene (PP) powder mixed airflow and is mixed, mixture enters the air flow deflector dispersing chamber again, make mixture under the effect of cutting of swirling eddy, obtain disperseing, become scattered about the embryo felt that forms unordered disorder on the travelling belt of bottom equably;
(5), baking composite setting: step " (4) " embryo felt is reached hydrofuge, softening, fusion, plasticizing purpose through high bake,, form glass fibre reinforced thermoplastic sheet (GMT) by composite setting.
2. the production method of glass fibre reinforced thermoplastic sheet as claimed in claim 1, it is characterized in that: described dynamic powder adherence by dynamic powder adherence device, makes glass fibre and polypropylene (PP) mixed powder be with positive and negative charge respectively.
3. the production method of glass fibre reinforced thermoplastic sheet as claimed in claim 1, it is characterized in that: described dynamic vaporific powder diameter is at 0.1nm～100 μ m..
4. the production method of glass fibre reinforced thermoplastic sheet as claimed in claim 1, it is characterized in that: described glass fibre length is cut into 12.5mm～150mm.
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| CN102179945B (en) * | 2011-04-25 | 2013-03-06 | 盐城市强力电工绝缘材料厂 | Production process of large-calibre epoxy glass fiber and braided strap winding extrusion draw pipe |
| CN103862807A (en) * | 2014-02-28 | 2014-06-18 | 合肥杰迈特汽车新材料有限公司 | GMT board continuous production line |
| CN105667018A (en) * | 2016-01-11 | 2016-06-15 | 南充旭阳塑料制造有限公司 | Manufacturing method of fiberglass mesh reinforced composite thermoplastic PP sheet and product |
| CN105778334B (en) * | 2016-03-16 | 2018-04-03 | 南京航空航天大学 | A kind of glass fiber thermoplastic plastic granule and preparation method thereof |
| CN107556619A (en) * | 2017-10-12 | 2018-01-09 | 深圳市惠程电气股份有限公司 | It is a kind of to be used to prepare composite board of inner and outer decorative parts of automobile and preparation method thereof |
| CN111497395A (en) * | 2020-04-20 | 2020-08-07 | 宁波拓普集团股份有限公司 | High-strength environment-friendly composite material prepared from microcellular foamed polypropylene |
| CN113290984A (en) * | 2021-04-20 | 2021-08-24 | 溧阳市山湖实业有限公司 | Low-VOC (volatile organic compound) vehicular glass fiber reinforced light thermoplastic composite board and preparation method thereof |
| CN113370376B (en) * | 2021-05-08 | 2023-09-01 | 山东永辰新材料有限公司 | Silicate fiberboard manufacturing device for homogenizing powder distribution |
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| JPH05337972A (en) * | 1992-06-10 | 1993-12-21 | Sekisui Chem Co Ltd | Production of glass fiber reinforced thermoplastic resin composite |
| JPH06306182A (en) * | 1993-04-21 | 1994-11-01 | Sumitomo Chem Co Ltd | Production of fiber-reinforced plastic sheet |
| CN100500970C (en) * | 2005-08-02 | 2009-06-17 | 中材科技股份有限公司 | Method for preparing continuous fiber reinforced thermoplastic plastic felt premix by needle puncture |
| CN101439604B (en) * | 2008-12-10 | 2011-08-31 | 黄云清 | Method for manufacturing light GMT sheet material |
| CN101418495B (en) * | 2008-12-10 | 2010-12-22 | 黄云清 | Method for preparing leached fibre felt by electrostatic dry method |
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