CN104260364A - Preparation method of fiber-reinforced thermoplastic product - Google Patents
Preparation method of fiber-reinforced thermoplastic product Download PDFInfo
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- CN104260364A CN104260364A CN201410386508.XA CN201410386508A CN104260364A CN 104260364 A CN104260364 A CN 104260364A CN 201410386508 A CN201410386508 A CN 201410386508A CN 104260364 A CN104260364 A CN 104260364A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
Abstract
The invention relates to a preparation method of a fiber-reinforced thermoplastic product. The preparation method comprises the following steps: (1) thermoplastic resin powder and reinforced fibers are mixed by a mixed dipping device; and (2) the mixture is molten through hot pressing or extrusion, and is pressed and cooled to obtain a molded product. The preparation method uses the reinforced fibers and recovered wastes, so that the raw materials are environment-friendly and low in cost, and no secondary pollution is generated; and the molded product is light in mass and high in strength, can be recycled, has wide purposes in industry, and has higher economic and social values.
Description
Technical field
The present invention relates to fiber and reclaim waste material preparation field, particularly relating to a kind of preparation method of fiber reinforced thermolplastic goods.
Background technology
In the manufacturing process of thermoplastic composite, be melt impregnation (dry method) or slurry impregnation (wet method) be all need first fiber opening to be become ultimate fibre, enter next process again, be glass fibre or chemical fibre or cotton fibriia be all pencil, hundreds and thousands of ultimate fibres are had inside mass of fibers, the reason of this bundle fiber bunchy has natural such as linen-cotton, has the artificial such as chemical fibre and glass fibre that manufacture, no matter which kind of fiber, it is tight and dead for combining between ultimate fibre and ultimate fibre, has External Force Acting just can open.
Now conventional mixer only has below or the rotor of both sides is broken up bundle fiber, due to rotor negligible amounts, every mass of fibers bundle is made to touch the probability of rotor relatively also less, and the rotor direction of motion is separately a kind of vertical and barrel wall, the effect played for the fibre bundle being parallel to barrel wall is very little, can not effectively break up fibre bundle, so need the mixer of better effects if to replace.
The hybrid infusion device also not finding that there is at present practical value and prospects for commercial application uses in the manufacturing process of thermoplastic composite, and whole technique is simple, and cost is low, can the pressing of production high strength.
Summary of the invention
The preparation method of a kind of fiber reinforced thermolplastic goods of the present invention, utilize enhancing fiber and reclaim waste material, raw material environmental protection and cost is low, do not produce secondary pollution, pressing quality is light, intensity is high, can recycling again, industrially there is extensive use, there is very high economy and social value.
The preparation method of a kind of fiber reinforced thermolplastic goods of the present invention, comprising:
(1) thermoplastic resin flour mill is worn into 10-30 object powder; Then with hybrid infusion device by the enhancing fiber of powder and 0.5 ~ 2cm by mass percentage 40 ~ 70%:30 ~ 60% mix, obtain compound;
(2) be laid in heating and melting molding die after the compound mixed being weighed by product weight, then mould put into the melting temperature that heating and melting multilayer film pressure device is heated to thermoplastic resin; Then the fused materials heated is dropped into compression molding in press die, obtains pressing;
Or above-mentioned broken material is dropped into extrusion melt material in extrusion screw rod; Then by fused materials by after extrusion neck ring mold, straight forming or drop into compression molding in press die, obtains pressing.
Thermoplastic resin in described step (1) is PP, PE, PVC, PET, PA etc.; Enhancing fiber is glass fibers string, chemical fibre.
The structure of the hybrid infusion device in described step (1) is: comprise urceolus, fly cutter assembly and shaft, the middle part lateral arrangement of described urceolus has shaft, described shaft is evenly arranged several blade groups, each blade group is made up of the blade that stretches out be evenly arranged along shaft periphery, each madial wall stretching out blade and urceolus is close to, and perpendicularly on the medial surface of described urceolus has been evenly arranged fly cutter assembly.
One as described immersion system is supplemented, evenly distributed in the rotating shaft of described fly cutter assembly have the some groups of fly cuttves be evenly arranged along shaft circumference face, the quantity often organizing fly cutter is 4-6, the length of the fly cutter of different group is inconsistent, in order to can fully hit fiber in different positions.
One as described immersion system is preferred, the described central axis stretching out blade and shaft or arrange in 45 ° of angles, in order that the stirring scope making to stretch out blade more greatly, easilier to be dug by fiber.
Another kind as described immersion system is preferred, the circumference cut surface often organizing fly cutter composition on described fly cutter assembly is vertical with rotating shaft or arrange in 45 ° of angles, in like manner, being also to make the rotation of fly cutter assembly increase, hitting and more increasing to the probability of fiber.
One as described immersion system is supplemented, and the height of described fly cutter assembly is less than the height of the blade stretching out blade one end, and this structure makes to stretch out fiber that blade digs all the time in the slewing area of fly cutter assembly, is conducive to hitting dispersion.
Described fly cutter assembly is driven by the motor be arranged on outside urceolus, and motor can be servomotor, is convenient to control the rotating speed of fly cutter assembly.
The upper end of described urceolus is furnished with circular arc valve, and this circular arc valve is manually opened or pneumatic unlatching, and this circular arc valve embeds urceolus and also flushes with outer tube inner wall, prevents outside the fiber in urceolus from dispersing.
The quantity adding fly cutter arranged by the multipoint fly cutter of multi-angle, increases the probability of fly cutter and fiber bundles contact.
The present invention makes full use of convection current mixing principle, namely utilizes the upthrow motion of material in mixing arrangement to form fluidized bed, produces instantaneous weight loss, make it to reach best admixture.In fluidized bed field, material overcomes centrifugal force with certain peripheral speed, and material, under specific overlapped blades effect, moves axially, and realizes mixing in comprehensive scope, forms random optimal movement state.In the mixing chamber with certain peripheral speed, form fluidized bed, the material in layer mixes under the effect of convection current mixing principle, and is being in state of weightlessness instantaneously, thus obtains a homogeneous mixture.
The principle of fiber dispersion is that the strength of more than 2 different directions acts on fibre bundle, fibre bundle is loosened and is opened into ultimate fibre, this strength or can be described as shearing force, these are sheared, and the speed of strength is faster, strength is larger, the words of same speed, distance is far away, strength is larger, and constantly repeat shearing force and be applied to fibre bundle, fibre bundle is just cut into ultimate fibre.
In the setting and selection of blade, the angle of paddle determines to stir direction, and must meet 1 condition, be exactly will material toward fly cutter upthrow.Conventional has paddle blade structure preferably flat, because flat blade turning over materials is shed toward both sides, the distance that fly cutter shed by material is moderate, and two kinds of object proximity speed is also than comparatively fast, and impact the shearing force produced enough large, fiber dispersion effectiveness comparison is good.
In addition, paddle size determine shed material number, paddle width design covers barrel as far as possible, the material that such leakage is turned over is few, mixing is also even, Blade height is higher than the height of fly cutter group, and design creates to fly cutter the space that rapidly impacts material like this, do not allow material stop near fly cutter, because from fly cutter more close to, dispersion effect is poorer.
When carrying out mixing, the length of corresponding fiber is the longest can 25mm, is longlyer just difficult to realization and fully breaks up, and the solid particle simultaneously added can be 10-40 object size, without the need to too small particle, and wherein preferred 30 object sizes.
Described paddle at an angle rotate make fiber and powder in cylindrical shell radially, the upset of axis, hoop combined-circulation flowing and shedding, the fly cutter simultaneously installing the High Rotation Speed of surrounding makes fiber and powder impact rapidly again and again and produces shearing force by fibre bundle and disperse, and fiber and powder produce the positive and negative charge that attracts each other and be adhering to each other together because material polarity is different, realize fully mixing of polymeric matrix powder and fiber.
The structure of the heating and melting molding die in described step (2) is: comprise metal formed frame and release cloth, described metal formed frame is placed on the upper end of lower supporting plate, bottom knockout cloth has been folded up between described metal formed frame and lower supporting plate, the inside casing region of described metal formed frame is placed with thermoplastic composite blank, the upper end of this thermoplastic composite blank is coated with release cloth, and described bottom knockout cloth and the area of upper release cloth are greater than the region area that metal formed frame surrounds.
The thickness of described metal formed frame is between 4mm-20mm, the height of this size makes thermoplastic composite blank can not be extruded from the gap between upper release cloth and metal formed frame, also ensure that thermoplastic composite blank fully can be subject to pressure and the thermally equivalent of moulding press.
Described lower supporting plate is rectangle sheet metal, and it is provided with handle along long limit, and handle is that workman directly need not contact the metal formed frame of high temperature and thermoplastic composite blank just can easily take out by lower supporting plate from moulding press.
Described upper release cloth and bottom knockout cloth are the Teflon cloth not gluing heat material, and when making the demoulding, thermoplastic composite blank can not be bonded on release cloth and bottom knockout cloth.
The structure of the heating and melting multilayer film pressure device in described step (2) is: comprise heated press, described heated press comprises frame and lifting processing platform, described frame becomes " Jiong " font, described frame " Jiong " character form structure is built with some heating plates be arranged in parallel, in described frame, corresponding every block heating plate is furnished with up-down adjustment control device, heater is provided with in described heating plate, the both sides, front and back of described frame are all furnished with lifting processing platform, are placed with molding die described in this between heating plate.
The upper end of described lifting processing platform is evenly provided with the roller parallel with the long limit of heating plate.
The two ends of described roller are furnished with the standing-rack of standing for personnel.
The thickness of described metal formed frame is between 4mm-20mm, the height of this size makes thermoplastic composite blank can not be extruded from the gap between upper release cloth and metal formed frame, also ensure that thermoplastic composite blank fully can be subject to pressure and the thermally equivalent of moulding press.
Described lower supporting plate is rectangle sheet metal, and it is provided with handle along long limit, and handle is that workman directly need not contact the metal formed frame of high temperature and thermoplastic composite blank just can easily take out by lower supporting plate from moulding press.
3 pieces of heating plates be arranged in parallel at least are housed in described frame.
Range when opening between two pieces adjacent in described heating plate is 250mm.
Described up-down adjustment control device independently controls the open and close of corresponding heating plate.It is to open separately heating material that one deck to molten condition to take out material and to drop into blank that every one deck independently controls opening and closing, and is less than other hot pressing layers of open-interval maintenance hot pressing state.
The fused materials surrounding heated is folded into the size less than product mold by folding being specially in described step (2) inward.Because surrounding material during heating is low relative to middle part temperature of charge, for homogeneous heating need the material of surrounding to be folded to middle part again mold pressing just can obtain product of good performance.
Described extrusion screw rod, at feeding section, extrude on trip segment and exhaust section and be provided with spiral shell rib, described feeding section with extrude trip segment and be connected, described exhaust section is arranged in be extruded in the middle part of trip segment, the excursion of the ratio of described feeding section and the spiral shell rib width extruded in trip segment and screw channel width is 0.24-0.62, the screw channel width sum of whole screw rod is more than 1.2 times of spiral groove depth sum, the volume of the maximum screw channel of described feeding section and the ratio of other section of minimum flight channel volume are 1.8:1, described extruding in trip segment is furnished with plasticizing mixing section, the length of this plasticizing mixing section is less than 10% of whole spiro rod length.
Traditional incorgruous conical double-screw is mainly used in extruding of the goods such as section bar and tubing, because it needs material to extrude under stable high pressure condition, so the helical pitch of screw rod designs less usually, screw thread quantity is many simultaneously, shear strong, but significantly limit the dischargeable capacity of screw rod, and then output is extruded in restriction.For GMT material, screw thread means that the volume of screw channel is restricted more, and then have influence on the lifting of output, the too small pressure brought of screw channel volume is excessive simultaneously, sheared the length that good general has influence on fiber, reduce product properties, so be 0.24-0.62 by the excursion of feeding section and the ratio of extruding spiral shell rib width in trip segment and screw channel width, and screw channel width sum accounts for 66% ~ 75% of whole spiro rod length, the volume of screw channel obtains very large expansion, extrusion pressure suitably reduces, the laminar flow that internal batch brings because of pressure reduces with shearing, the length of fiber obtains reservation.
The screw channel width sum of whole screw rod is more than 1.2 times of spiral groove depth sum, make the shearing suffered by material little, particularly feeding section adopts wide screw channel, dark screw channel so that the feeding of the material of bulk density below 0.3 ton/cubic metre, traditional cone twin-screw is then contrary, be generally that groove depth sum is greater than groove width sum, screw thread quantity is many, shear strong.
In the design of traditional conical double-screw, the volume of feeding section screw channel is 3 times of the minimum volume of middle choked flow section screw channel, compression factor reaches about 1:3, larger compression ratio is conducive to setting up higher extrusion pressure, but strong laminar flow can be brought in stream inside, cause stream internal shear very large, the length of glass is destroyed, and then has influence on the quality of goods.In the production and application of the reality of the screw rod described in this patent, main dependence downstream press ensures the compactness of goods, so in an extruder, be 1.8:1 by the volume of the maximum screw channel of feeding section and the ratio of other section of minimum flight channel volume, thus effectively controlling the shearing of stream inside, less compression is the reduction of the interior friction between material, to retain fibre strength as far as possible, reach the object as far as possible retaining Length of Glass Fiber, ensure the mechanical property of goods.
Classic screw is in process, and the energy of material plasticizing comes from changes mechanical energy and the machine barrel heat transfer energy of mair motor.This just needs to arrange restricted section (as the master/slave thread segment of the derotation element of the little helical pitch screw thread of conical double-screw, parallel double-screw, singe screw, barrier head and pin mixing section etc.) on screw rod, plastify mixing assembly and all there is stronger shearing function, the pressure of stream inside can be strengthened while plasticizing is mixing, strengthen the laminar flow of internal batch, cut off glass.In the conical double-screw that the screw rod by present patent application forms, the little helical pitch screw thread playing metering function narrows down to 2-3 helical pitch by 10 helical pitches of conventional threads, in the single-screw extruder of present patent application, the described length extruding the plasticizing mixing section arranged in trip segment is less than 10% of whole spiro rod length, and this plasticizing mixing section is being distributed in of dispersion extrudes in trip segment or integrated distribution is extruding any position in trip segment.
Described extrusion screw rod is flat screw rod or conical screw, and two are arranged side by side and the contrary screw rod of hand of spiral just can form parallel double-screw or conical double-screw, strengthen and extrude effect.
A circle pin is all circumferentially furnished with in several spiral shell rib helical pitches on the described position of extruding close exhaust section in trip segment, material is when flowing through pin section, a lot of stock can be divided into, and next when flowing through second pin section, separated situation can be experienced once again, thus cause shunting repeatedly and mix, be conducive to strengthening the contact area of the material of melting and the particle of non-melting like this, improve heat transfer, improve the uniformity of material.Suitably mate screw speed simultaneously, control the time of staying of material, ensure the melting of material.
Further, the cross section of the circle that the pin in described spiral shell rib helical pitch surrounds and screw rod is arranged in parallel or is arranged in parallel with spiral shell rib, two kinds of arrangements can, select according to actual needs.
The diameter of described exhaust section is less than the diameter extruding trip segment, increase the surface area contacted with material, consider that raw material sources are more complicated, raw material internal moisture content is more, therefore be aided with vacuum exhaust, extract moisture in raw material, this exhaust section is furnished with double thread, its objective is the surface area expanding material, increase the possibility that material internal gas is discharged.This segment base does not originally affect plasticizing effect, and shearing force is also more weak.Moisture major part in material is here discharged.
beneficial effect
Present invention process is easy, energy-conserving and environment-protective, and its pressing prepared industrially has extensive use.
(1) brick pallets prepared of the present invention, has that quality is light, intensity is high, wear-resisting, the features such as long service life.Compared with the macromolecule PVC supporting plate of density 1800kg/ cubic meter, the density of brick pallets is 1200kg/ cubic meter, weight reduction about 35%.Same size is as the supporting plate of 850mm*680mm*18mm, and PVC supporting plate is that 18kg/ opens, and supporting plate of the present invention is 12kg/ opens.This supporting plate good weatherability: when minus 20 degrees, supporting plate Strength Changes is little, and PVC supporting plate becomes fragile when subzero, easily ruptures, and loss is large.Supporting plate unnotched impact strength of the present invention is greater than 25MJ/ ㎡, and the impact strength of PVC supporting plate is about 20MJ/ ㎡.So comparatively PVC supporting plate increase by more than 1/3rd in the service life of supporting plate of the present invention.
(2) building template prepared of the present invention, have that quality is light, intensity is high, the feature such as wear-resisting, long service life, general turnover access times are more than 30 times, and glued board building template can only have enough to meet the need 5-6 time, and foaming PVC building template can only have enough to meet the need about 10 times.Smooth bright and clean, template splicing is tightly smooth, and after the demoulding, concrete structural surface degree, fineness all exceed the technical requirement of existing plain form, must not plaster by secondary, labor and material saving.Light easy dress.Lightweight, Technological adaptability is strong, can saw, digs, bores, follow closely, can arbitrarily form any geometry, meets various shape building formwork needs.The demoulding is easy.Plate face is not stained with by concrete, without the need to releasing agent, and the light demoulding, easy deashing.Stablize weather-proof.Mechanical strength is high, under-20 DEG C to 60 DEG C temperature conditions, does not shrink, not bulking, do not ftracture, indeformable, dimensionally stable, alkaline-resisting anticorrosion, fire-resistant waterproof, refuse mouse insect protected, be beneficial to maintenance.Template does not absorb water, without special curing or keeping.Changeability is strong.Kind, shape, specification can require customization according to architectural engineering.Low cost.The number of turnover is many, and plane mould is not less than 30 times, and post beam form is not less than 40 times, energy-conserving and environment-protective.Leftover pieces and waste and old template all can reclaim and reproduce.
(3) the leakage dropping-board prepared of the present invention, intensity can be suitable with BMC fiberglass, and have anticorrosive, anti-aging, cool in summer and warm in winter, thermal conductivity factor is low; Be beneficial to pig growth and development, the advantage such as specious.Flat smooth, antiacid basicity.Do not hinder pin, do not hinder nipple, lightweight, easy for installation.Self-cleaning function, i.e. not sticky ight soil, easy cleaning, does not have Production by Bacteria raw in Long-Time Service process.Recyclable recycling.
(4) the present invention can also the molded product of production many types, as pressings such as trench cover, pallet, plates.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention;
Fig. 2 is the structural representation of hybrid infusion device of the present invention;
Fig. 3 is the structural representation of heating and melting multilayer film pressure device of the present invention;
Fig. 4 is the schematic diagram of heating and melting multilayer film pressure device of the present invention when not working;
Fig. 5 is the schematic diagram of molding die of the present invention;
Fig. 6 is the structural representation of metal formed frame of the present invention;
Fig. 7 is the structural representation of lower supporting plate of the present invention;
Fig. 8 is the structural representation of extrusion screw rod of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
(1) thermoplastic resin flour mill is worn into 30 object powders; Then use hybrid infusion device (as shown in Figure 2) by the enhancing fiber of powder and 2cm by mass percentage 70%:30% mix, obtain compound; Wherein, enhancing fiber contains the glass fibre of 30%;
(2) material metage 17.5 kilograms mixed is laid in molding die (lower plate: 3mm corrosion resistant plate equably; The thick Teflon cloth of bottom knockout cloth: 0.65mm; Chase: length 1900mm* width 800* height 8mm; The thick Teflon cloth of upper release cloth: 0.65mm) in, as shown in Figures 3 and 4.
(3) again mould is put into heating and melting multilayer film pressure device (as shown in Figure 3) heating about 10 minutes, temperature of charge is made to reach 220 DEG C, open heated press, open upper and lower release cloth, remove mould, the material surrounding of heating and melting is folded to inward is less than die size, then material is dropped in the mould of 850*850*20mm, the compression molding of closed mold press, cooling and shaping.
Embodiment 2
(1) thermoplastic resin flour mill is worn into 20 object powders; Then with fibers mixture immersion system by the enhancing fiber of powder and 1.5cm by mass percentage 60%:40% mix, obtain compound; Wherein, enhancing fiber contains the glass fibre of 30%;
(2) get above-mentioned compound 100% and drop into extrusion melt material in extrusion screw rod (as shown in Figure 8);
(3) making fused materials be 400mm by die extrusion width, is highly the fused materials 12.5 kilograms of 40mm;
(4) again the fused materials of 12.5 kilograms is dropped in mould pressing die, the compression molding of closed mold press, cooling and shaping, obtain brick pallets.
Claims (6)
1. a preparation method for fiber reinforced thermolplastic goods, comprising:
(1) thermoplastic resin flour mill is worn into 10-30 object powder; Then with hybrid infusion device by the enhancing fiber of powder and 0.5 ~ 2cm by mass percentage 40 ~ 70%:30 ~ 60% mix, obtain compound;
(2) be laid in heating and melting molding die after the compound mixed being weighed by product weight, then mould put into the melting temperature that heating and melting multilayer film pressure device is heated to thermoplastic resin; Then the fused materials heated is dropped into compression molding in press die, obtains pressing;
Or above-mentioned broken material is dropped into extrusion melt material in extrusion screw rod; Then by fused materials by after extrusion neck ring mold, straight forming or drop into compression molding in press die, obtains pressing.
2. the preparation method of a kind of fiber reinforced thermolplastic goods according to claim 1, is characterized in that: the thermoplastic resin in described step (1) is PP, PE, PVC, PET or PA; Enhancing fiber is glass fibre, string, chemical fibre.
3. the preparation method of a kind of fiber reinforced thermolplastic goods according to claim 1, it is characterized in that: the structure of the fibers mixture immersion system in described step (1) is: comprise urceolus (1), fly cutter assembly (2) and shaft (3), the middle part lateral arrangement of described urceolus (1) has shaft (3), described shaft (3) is evenly arranged several blade groups (5), each blade group (5) is made up of the blade (4) that stretches out be evenly arranged along shaft (3) periphery, each blade (4) that stretches out is close to the madial wall of urceolus (1), perpendicularly on the medial surface of described urceolus (1) be evenly arranged fly cutter assembly (2).
4. the preparation method of a kind of fiber reinforced thermolplastic goods according to claim 1, it is characterized in that: the structure of the heating and melting molding die in described step (2) is: comprise metal formed frame (3) and release cloth, described metal formed frame (3) is placed on the upper end of lower supporting plate (2), bottom knockout cloth (4) has been folded up between described metal formed frame (3) and lower supporting plate (2), the inside casing region of described metal formed frame (3) is placed with thermoplastic composite blank (6), the upper end of this thermoplastic composite blank (6) is coated with release cloth (1), described bottom knockout cloth (4) and the area of upper release cloth (1) are greater than the region area that metal formed frame (3) surrounds.
5. the preparation method of a kind of fiber reinforced thermolplastic goods according to claim 1, it is characterized in that: the structure of the heating and melting multilayer film pressure device in described step (2) is: comprise heated press, described heated press comprises frame (1) and lifting processing platform (2), described frame (1) becomes " Jiong " font, described frame (1) " Jiong " character form structure is built with some heating plates (3) be arranged in parallel, the upper corresponding every block heating plate (3) of described frame (1) is furnished with up-down adjustment control device, described heating plate is provided with heater in (3), the both sides, front and back of described frame (1) are all furnished with lifting processing platform (2), heating plate described in this is placed with molding die between (3).
6. the preparation method of a kind of fiber reinforced thermolplastic goods according to claim 1, is characterized in that: the structure of the extrusion screw rod in described step (2) is: at feeding section (C), extrude on trip segment (A) and exhaust section (B) and be provided with spiral shell rib, described feeding section (C) with extrude trip segment (A) and be connected, described exhaust section (B) is arranged in extrudes trip segment (A) middle part, the excursion of described feeding section (C) and the ratio of the spiral shell rib width extruded in trip segment (A) and screw channel width is 0.24-0.62, the screw channel width sum of whole screw rod is more than 1.2 times of spiral groove depth sum, the volume of maximum screw channel and the ratio of other section of minimum flight channel volume of described feeding section (C) are 1.8:1, described extruding in trip segment (A) is furnished with plasticizing mixing section, the length of this plasticizing mixing section is less than 10% of whole spiro rod length.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583987A (en) * | 2015-12-29 | 2016-05-18 | 宁波华业材料科技有限公司 | Manufacturing method for fiber-reinforced thermoplastic compression-molded product |
| CN106883514A (en) * | 2017-03-24 | 2017-06-23 | 宁波华业材料科技有限公司 | A kind of fiberglass reinforced thermoplasticity concrete building brick supporting plate |
| CN109070498A (en) * | 2016-02-23 | 2018-12-21 | Lm Wp 专利控股有限公司 | The method for manufacturing composite laminate structure |
| CN113211707A (en) * | 2021-05-21 | 2021-08-06 | 河北强华橡胶制品有限公司 | Method for preparing high-density foam thermal insulation material by using waste foamed thermal insulation material |
| CN113276446A (en) * | 2021-03-31 | 2021-08-20 | 刘德友 | Single crystal growing furnace crucible tray raw material processing apparatus |
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| CN101049709A (en) * | 2007-03-01 | 2007-10-10 | 赵永生 | Nano composite woody material, and preparation method |
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| CN101049709A (en) * | 2007-03-01 | 2007-10-10 | 赵永生 | Nano composite woody material, and preparation method |
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