CN105034491A - Polypropylene glass fiber composite material and preparation method thereof - Google Patents
Polypropylene glass fiber composite material and preparation method thereof Download PDFInfo
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- CN105034491A CN105034491A CN201510391576.XA CN201510391576A CN105034491A CN 105034491 A CN105034491 A CN 105034491A CN 201510391576 A CN201510391576 A CN 201510391576A CN 105034491 A CN105034491 A CN 105034491A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
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- B32B17/064—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a polypropylene glass fiber composite material and a preparation method thereof. The method is characterized in that a plurality of layers of polypropylene sheets and a plurality of layers of glass fiber cloths are alternately stacked and compacted to form a pre-impregnated sheet, the fusion index of the polypropylene sheets is 10-20, the gram weight of the glass fiber cloths is 350-400g/m<2>, and the proportion of glass fibers in the pre-impregnated sheet is 50-65%. The above scheme makes the glass fiber cloths and polypropylene have good infiltrating effect, and enhancement effects of the good physical performances of polypropylene and the mechanical performances of the glass fibers are fully reflected. The bending performance of per unit g/m<2> of the material is optimal, and the material is maximally saved; and the method has the advantages of simple process, continuous production, high production efficiency, easy control of the production process, and optimal comprehensive cost.
Description
Technical field
The invention belongs to thermoplastic composite field, relate to thermoplastic composite sheet material and composite board, particularly relate to a kind of polypropylene glass fiber composite material and preparation method thereof.
Background technology
Thermoplastic is as polypropylene, Merlon etc., there is the advantages such as specific strength is high, nonpoisonous and tasteless, comprehensive mechanical property is strong, and thermoplastic not only itself can recycling, and the material that itself and glass fibre, carbon fiber etc. are combined into also can recycling.Therefore, the composite of polypropylene and glass fibre, carbon fiber etc. is widely used in fields such as automobile, building, household electrical appliances, wind-powered electricity generations.Along with the requirement of energy-conserving and environment-protective, the light-weighted requirement of client to material is more and more higher, particularly sheet material and sheet material, the acceptable weight of common customer is all at below 5kg/m2, so both reach the requirement of loss of weight, it is also more convenient that workman installs carrying, and thermoplastic composite can meet the requirement of client to weight just.Meanwhile, for security consideration, client is also more and more higher for the fire protection requirement of thermoplastic sheet, just can be reached the requirement of client by the anti-flammability of modification raising PP composite material.
But thermoplastic, due to the high characteristic of at high temperature its distinctive viscosity, makes the wellability of itself and reinforcing material poor, is difficult to obtain desirable and stable mechanical strength.CN104175612A provides a kind of way of thermoplastic sheet, use MODIFIED PP film and glass fabric preheat roll molded become plate.The method effect of impregnation is poor, and mechanical strength is low.In order to improve effect of impregnation, CN102765230B discloses a kind of application process of complex fabric cloth, and the mode being replaced laying hot pressing by polypropylene layer of cloth, glass fabric, polypropylene layer of cloth prepares composite sheet.The method complex procedures, operating pressure is large, and high to equipment requirement, efficiency is extremely low.Composite sheet is prepared in CN102675727B stacked mold pressing after being evenly sprinkling upon glass layer of cloth containing polyacrylic mixed powder thing.The method needs powder, and dispersing uniformity is bad, poor working environment, and efficiency is low.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide excellent polypropylene flame redardant glass fiber composite material of a kind of specific strength and preparation method thereof, technique is comparatively simple, can also carry out continuous prodution, and integrated cost is optimum.
To achieve the above object, present invention employs following technical scheme:
A kind of polypropylene glass fiber composite material, comprising: be pressed into preimpregnation sheet material by multi-layer polypropylene sheet and some layers of alternate the stacking of glass-fiber-fabric, the melt index of described polypropylene foil is 10 ~ 20, and the grammes per square metre of described glass-fiber-fabric is 350 ~ 400g/m
2, in preimpregnation sheet material, glass proportion is 50% ~ 65%.
As preferably, described preimpregnation sheet material is compounded in upper surface and/or the lower surface of intermediate core layer.
As preferably, described intermediate core layer is polypropylene sheet core or polypropylene honeycomb core, and the thickness of polypropylene sheet core is greater than polypropylene foil.
A preparation method for polypropylene glass fiber composite material, by glass fabric and polypropylene foil by together with alternately laminated, then is pressed into preimpregnation sheet material through steel belt pressing machine; Described steel belt pressing machine is divided into bringing-up section and cooling section, bringing-up section and cooling section all have pressue device, the thermal treatment zone and cooling zone are divided into upper and lower two separate units by two steel bands by steel belt pressing machine, heading-length is 8 ~ 10m, cooling section is 4 ~ 8m, bringing-up section is divided into three independent partitions, and pressure and temperature can independently control; Heat pressing process is: district's temperature 80 ~ 250 DEG C, pressure 0.1 ~ 1MPa; Two district's temperature 190 ~ 250 DEG C, pressure 4 ~ 6MPa; Three district's temperature 190 ~ 250 DEG C, pressure 4 ~ 6MPa, total hot pressing time 3min ~ 5min, then through cooling section cooling and shaping; Wherein, described glass-fiber-fabric processes through silane coupler, and film forming agent is PP wax or vinylacetate; Described polypropylene foil maleic anhydride inoculated polypropylene is made.
As preferably, when preparing thicker sheet material, can first individual layer preimpregnation good, then multiple-layer stacked hot pressing.When preparing thicker sheet material, the optional pp sheet of middle core or PP honeycomb core.
The present invention, owing to have employed above technical scheme, makes glass-fiber-fabric and polypropylene have better effect of impregnation, and the mechanical performance embodying polyacrylic good physical behavior and glass fully strengthens effect.Under unit square meter grammes per square metre, the bending property of material is optimum, saves material most, and technique is comparatively simple, and can also carry out continuous prodution, production efficiency is high, and production process easily controls, and integrated cost is optimum.
Accompanying drawing explanation
Fig. 1 is the structural representation of preimpregnation sheet material of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1:
A kind of polypropylene glass fiber composite material, comprising: be pressed into preimpregnation sheet material by 3 layer polypropylene sheets and 2 layers of alternate stacking of glass-fiber-fabric, the melt index of described polypropylene foil is 10 ~ 20, and the grammes per square metre of described glass-fiber-fabric is 350 ~ 400g/m
2, in preimpregnation sheet material, glass proportion is 50% ~ 65%.
In the present embodiment, described preimpregnation sheet material is compounded in upper surface and/or the lower surface of intermediate core layer.Described intermediate core layer is polypropylene sheet core or polypropylene honeycomb core, and the thickness of polypropylene sheet core is greater than polypropylene foil.
A preparation method for polypropylene glass fiber composite material, by glass fabric and polypropylene foil by together with alternately laminated, then is pressed into preimpregnation sheet material through steel belt pressing machine; Described steel belt pressing machine is divided into bringing-up section and cooling section, bringing-up section and cooling section all have pressue device, the thermal treatment zone and cooling zone are divided into upper and lower two separate units by two steel bands by steel belt pressing machine, heading-length is 8 ~ 10m, cooling section is 4 ~ 8m, bringing-up section is divided into three independent partitions, and pressure and temperature can independently control; Heat pressing process is: district's temperature 80 ~ 250 DEG C, pressure 0.1 ~ 1MPa; Two district's temperature 190 ~ 250 DEG C, pressure 4 ~ 6MPa; Three district's temperature 190 ~ 250 DEG C, pressure 4 ~ 6MPa, total hot pressing time 3min ~ 5min, then through cooling section cooling and shaping; Wherein, described glass-fiber-fabric processes through silane coupler, and film forming agent is PP wax or vinylacetate; Described polypropylene foil maleic anhydride inoculated polypropylene is made.
Preimpregnation sheet material as shown in Figure 1, layers of material stacks and is followed successively by polypropylene foil 1, glass-fiber-fabric 2, polypropylene foil 1, glass-fiber-fabric 2, polypropylene foil 1.First this structure is pressed into preliminary-dip piece, then two-layer preliminary-dip piece is compounded in the upper and lower surface of PP sheet or the upper and lower surface of PP honeycomb core.
Concrete, described polypropylene screen preferred molten index is higher, generally wants melt index 10 ~ 50, make the infiltration of polypropylene and glass-fiber-fabric better, the preferred COPP of polypropylene simultaneously, COPP has better physical property, effectively can promote the performance of composite plate.The preferred ammonium polyphosphate of described Flame Retardant Agent of Polypropylene, it not only has efficient flame retardant effect, can not produce toxic gas during burning simultaneously.The preferred maleic anhydride of described polypropylene modifier, carrys out graft polypropylene with maleic anhydride, adds polyacrylic polarity, improves the adhesion of polypropylene and glass-fiber-fabric greatly, thus improves the mechanical property of final composite.Described glass-fiber-fabric preferred high strength glass-fiber-fabric, grammes per square metre is less than 400g/m2, and wherein ultimate fibre hot strength is greater than 2600MPa.The preferred amino silane of described glass-fiber-fabric coupling agent, the optional vinylacetate of film forming agent, pp wax etc.This continuous glass-fiber reinforced polypropylene compound material is the MULTIPLE COMPOSITE material that a kind of glass and acrylic resin are stacked alternately, and glass proportion is 50% ~ 65%.
Continuous glass-fiber reinforced polypropylene compound material provided by the invention, suitable auxiliary agent is utilized to carry out modification to glass-fiber-fabric and polypropylene respectively, make glass-fiber-fabric and polypropylene have better effect of impregnation, the mechanical performance embodying polyacrylic good physical behavior and glass fully strengthens effect.Adding fire retardant can make this composite can use in more areas simultaneously.Continuous glass-fiber reinforced polypropylene compound material of the present invention adopts serialization steel belt pressing machine to be composited, and production technology is simple, and production efficiency is high, and production process easily controls.
Embodiment below by way of concrete formula and production technology illustrates above-mentioned continuous glass-fiber reinforced polypropylene compound material and preparation method thereof.
Embodiment 1:
The present embodiment has carried out 3 experiments.First do preliminary-dip piece, preliminary-dip piece structure as shown in Figure 1, then with two-layer identical preliminary-dip piece direct combination, uses material as follows:
Test 1 preliminary-dip piece: 0.2mm MODIFIED PP sheet (melt index 10), 300g/m
2the glass-fiber-fabric of grammes per square metre 800tex
Test 2 preliminary-dip pieces: 0.25mm MODIFIED PP sheet (melt index 10), 400g/m
2the glass-fiber-fabric of grammes per square metre 800tex
Test 3 preliminary-dip pieces: 0.3mm MODIFIED PP sheet (melt index 10), 500g/m
2the glass-fiber-fabric of grammes per square metre 800tex
Preliminary-dip piece combination process:
One district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 220 DEG C, pressure 3MPa, three district's temperature 220 DEG C, pressure 6MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Two-layer identical preliminary-dip piece combination process:
Temperature 220 DEG C, 2kg pressure 2min, then through cold-zone cooling and shaping.
By ASTM testing standard, test with universal testing machine, test three group of formula, comparing result is as following table
| Test event | Condition | Experiment 1 | Experiment 2 | Experiment 3 |
| Bending strength (MPa) | 23℃ | 230 | 220 | 160 |
| Bending modulus (MPa) | 23℃ | 12750 | 12420 | 11025 |
Above-described embodiment sees that different grammes per square metre glass-fiber-fabric is on the impact of plate property under the prerequisite ensureing that glass fiber content is consistent.Glass grammes per square metre performance difference between 300 ~ 400g/m2 is little as can be seen from the above table, and performance is all higher, illustrates that glass is at 300g/m
2~ 400g/m
2between pp can infiltrate fully with glass, the embodiment that the performance enhancement effect of glass obtains.Conveniently produce, reduce the number of plies, glass grammes per square metre preferably controls at 350 ~ 400g/m simultaneously
2.Work as 500g/m
2time bending property have obvious decline, this illustrates that glass grammes per square metre is at 500g/m
2time above, glass establishment is too tight, and the content of glass is too high again simultaneously, causes pp not infiltrate fully, causes the reduction of physical property, the enhancing limited efficiency of glass.
Embodiment 2:
The present embodiment has carried out 3 experiments, first does preliminary-dip piece, then uses preliminary-dip piece and 1.3mmPP sheet compound, and preliminary-dip piece structure as shown in Figure 1, uses material as follows:
The glass-fiber-fabric of experiment 1:0.25mm MODIFIED PP sheet (melt index 20) 400g/m2 grammes per square metre 800tex is stacked alternately
The glass-fiber-fabric of experiment 2:0.25mm MODIFIED PP sheet (melt index 10) 400g/m2 grammes per square metre 800tex is stacked alternately
The glass-fiber-fabric of experiment 3:0.25mm MODIFIED PP sheet (melt index 3) 400g/m2 grammes per square metre 800tex is stacked alternately
Preliminary-dip piece combination process:
One district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 220 DEG C, pressure 3MPa, three district's temperature 220 DEG C, pressure 6MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Preliminary-dip piece and 1.3mm thick pp sheet combination process:
Temperature 220 DEG C, 2kg pressure 2min, then through cold-zone cooling and shaping.
By ASTM testing standard, test with universal testing machine, test three group of formula, comparing result is as following table
| Test event | Condition | Experiment 1 | Experiment 2 | Experiment 3 |
| Bending strength (MPa) | 23℃ | 165 | 155 | 120 |
| Bending modulus (MPa) | 23℃ | 10050 | 9420 | 6036 |
Above-described embodiment is the impact of PP on plate property of different melt index.The too small meeting of polyacrylic melt index causes polyacrylic mobility inadequate as can be seen from the above table, thus insufficient with the wellability of glass, makes performance lower.When polyacrylic melt index is more than 10, polypropylene has sufficient mobility, thus also compares fully with the infiltration of glass, and Performance comparision is high.But when melt index reaches more than 10, along with the increase of polyacrylic melt index, performance boost is also little.But this makes troubles to polypropylene film-forming process, thus polyacrylic melt index preferably controls between 10 ~ 20.
Embodiment 3:
The present embodiment has carried out 3 experiments, first does preliminary-dip piece, then uses preliminary-dip piece and 1.3mmPP sheet compound, and preliminary-dip piece structure as shown in Figure 1, uses material as follows:
Experiment material: 0.25mm MODIFIED PP sheet (melt index 10), 400g/m
2the glass-fiber-fabric of grammes per square metre 800tex carries out alternately folded.
Preliminary-dip piece combination process:
Experiment 1: one district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 190 DEG C, pressure 3MPa, three district's temperature 190 DEG C, pressure 6MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Experiment 2: one district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 210 DEG C, pressure 3MPa, three district's temperature 210 DEG C, pressure 6MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Experiment 3: one district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 240 DEG C, pressure 3MPa, three district's temperature 240 DEG C, pressure 6MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Preliminary-dip piece and 1.3mm thick pp sheet combination process:
Temperature 220 DEG C, 2kg pressure 2min, then through cold-zone cooling and shaping.
Case carries out 220 DEG C, and 5 ~ 10kg pressure 3min ~ 5min, then through cold-zone cooling and shaping.
By ASTM testing standard, test with universal testing machine, test three group of formula, comparing result is as following table
| Test event | Condition | Experiment 1 | Experiment 2 | Experiment 3 |
| Bending strength (MPa) | 23℃ | 140 | 150 | 170 |
| Bending modulus (MPa) | 23℃ | 9000 | 9021 | 9013 |
Above-described embodiment is the impact of different processing temperature on plate property.The temperature of preliminary-dip piece is comparatively large to the performance impact of product as can be seen from the above table, and temperature has significantly more from 190 DEG C to the performance of 240 DEG C of sheet materials.This is because along with the increase of temperature, the mobility of PP also increases thereupon, it is intrafascicular that polypropylene just can better be dispersed in glass, wellability is increased, thus promote the mechanical property of composite plate, but after temperature acquires a certain degree, there is the problems such as easy weather stain in PP after high temperature, thus processing temperature is unsuitable too high, can not more than 250 DEG C.
Embodiment 4:
The present embodiment has carried out 3 experiments, first does preliminary-dip piece, then uses preliminary-dip piece and 1.3mmPP sheet compound, and preliminary-dip piece structure as shown in Figure 1, uses material as follows:
Experiment material: 0.25mm MODIFIED PP sheet (melt index 10) 400g/m
2the glass-fiber-fabric of grammes per square metre 800tex carries out alternately folded.
Preliminary-dip piece combination process:
Experiment 1: one district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 220 DEG C, pressure 2MPa, three district's temperature 220 DEG C, pressure 4MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Experiment 2: one district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 220 DEG C, pressure 2.5MPa, three district's temperature 220 DEG C, pressure 5MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Experiment 3: one district's temperature 160 DEG C, pressure 0.7MPa, two district's temperature 220 DEG C, pressure 3MPa, three district's temperature 220 DEG C, pressure 6MPa, always suppresses 4min, then through cold-zone cooling and shaping.
Preliminary-dip piece and 1.3mm thick pp sheet combination process:
Temperature 220 DEG C, 2kg pressure 2min, then through cold-zone cooling and shaping.
Case carries out 220 DEG C, and 5 ~ 10kg pressure 3min ~ 5min, then through cold-zone cooling and shaping.
By ASTM testing standard, test with universal testing machine, test three group of formula, comparing result is as following table
| Test event | Condition | Experiment 1 | Experiment 2 | Experiment 3 |
| Bending strength (MPa) | 23℃ | 140 | 150 | 155 |
| Bending modulus (MPa) | 23℃ | 9180 | 9202 | 9420 |
Above-described embodiment is the impact of different operating pressure on plate property.The performance of the pressure of preliminary-dip piece sheet material from 4MPa to 5MPa improves a lot as can be seen from the above table, and from 5MPa to 6MPa the performance boost decreased effectiveness of sheet material.This is because along with the increase of pressure, glass bundle can better be evacuated, and makes the pp of melting better to permeate, thus increase wellability, improve plate property.But the evacuation limitation of glass-fiber-fabric after braiding, after pressure acquires a certain degree, diversity promotes not obvious, and high pressure makes the requirement of equipment higher, and equipment and parts thereof also can reduce the life-span because of high pressure, and thus, operating pressure is 4 ~ 6MPa preferably simultaneously.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. a polypropylene glass fiber composite material, comprising: be pressed into preimpregnation sheet material by multi-layer polypropylene sheet and some layers of alternate the stacking of glass-fiber-fabric, it is characterized in that, the melt index of described polypropylene foil is 10 ~ 20, and the grammes per square metre of described glass-fiber-fabric is 350 ~ 400g/m
2, in preimpregnation sheet material, glass proportion is 50% ~ 65%.
2. a kind of polypropylene glass fiber composite material according to claim 1, is characterized in that, described preimpregnation sheet material is compounded in upper surface and/or the lower surface of intermediate core layer.
3. a kind of polypropylene glass fiber composite material according to claim 1, is characterized in that, described intermediate core layer is polypropylene sheet core or polypropylene honeycomb core, and the thickness of polypropylene sheet core is greater than polypropylene foil.
4. the preparation method of a kind of polypropylene glass fiber composite material according to claim 1, is characterized in that, by glass fabric and polypropylene foil by together with alternately laminated, then is pressed into preimpregnation sheet material through steel belt pressing machine; Described steel belt pressing machine is divided into bringing-up section and cooling section, bringing-up section and cooling section all have pressue device, the thermal treatment zone and cooling zone are divided into upper and lower two separate units by two steel bands by steel belt pressing machine, heading-length is 8 ~ 10m, cooling section is 4 ~ 8m, bringing-up section is divided into three independent partitions, and pressure and temperature can independently control; Heat pressing process is: district's temperature 80 ~ 250 DEG C, pressure 0.1 ~ 1MPa; Two district's temperature 190 ~ 250 DEG C, pressure 4 ~ 6MPa; Three district's temperature 190 ~ 250 DEG C, pressure 4 ~ 6MPa, total hot pressing time 3min ~ 5min, then through cooling section cooling and shaping; Wherein, described glass-fiber-fabric processes through silane coupler, and film forming agent is PP wax or vinylacetate; Described polypropylene foil maleic anhydride inoculated polypropylene is made.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105542302A (en) * | 2016-01-11 | 2016-05-04 | 南充旭阳塑料制造有限公司 | Preparing method of carbon-fiber-gridding-fabric-reinforced composite thermoplastic PP plate and product |
| 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 |
| CN109263215A (en) * | 2018-07-17 | 2019-01-25 | 东莞市建勋新材料科技有限公司 | A kind of thermoplastic composite and preparation process |
| CN111572059A (en) * | 2020-05-13 | 2020-08-25 | 株洲时代工程塑料科技有限责任公司 | Continuous glass fiber reinforced thermoplastic composite material and preparation method thereof |
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