CN105172277A - Self-reinforcing polypropylene composite panel - Google Patents
Self-reinforcing polypropylene composite panel Download PDFInfo
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- CN105172277A CN105172277A CN201510720793.9A CN201510720793A CN105172277A CN 105172277 A CN105172277 A CN 105172277A CN 201510720793 A CN201510720793 A CN 201510720793A CN 105172277 A CN105172277 A CN 105172277A
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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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
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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
- 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
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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
- 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
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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
- B32B38/00—Ancillary operations in connection with laminating processes
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0028—Stretching, elongating
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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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation method of a self-reinforcing polypropylene composite panel. The preparation method comprises the steps of adopting polypropylene woven cloth with the surface coated with polypropylene, namely fabric woven by polypropylene fibers or flat filaments obtained after stretching orientation, conducting hot-pressing on multiple layers of polypropylene woven cloth in an unrestrained mode, and obtaining the self-reinforcing polypropylene composite panel. According to the self-reinforcing polypropylene composite panel, on the basis of adoption of existing equipment, the pressing process is simplified, the processing technology window is widened, and the product performance is excellent.
Description
Technical field
The invention belongs to field of composite material preparation, be specifically related to a kind of self-reinforcing PP composite material sheet material.
Background technology
Self-reinforced material is the representative of a revolutionary advancement of macromolecular material in recent international.Analyze according to internationally famous polymer science man Prof.S.Fakirov, polymer science theory is set up since nineteen twenty-one H.Staudinger proposes macromolecule concept, since Polymeric Industry fast development that Open from This Side, macromolecule chemical industry particularly plastics industry experienced by roughly following 4 stages:
First be before the seventies in last century, it is the stage that new material constantly synthesizes, finds, this stage macromolecule chemical industry industry is constantly to synthesize new varieties synthetic resin material for representative, the techniques such as industrial quarters application is taked injection moulding, extruded, compacting, based on the resin material directly using synthesis factory to provide;
Second stage, from the eighties in last century to the beginning of this century, because market application is ever-changing, and to synthesize factory can the synthetic resin kind of suitability for industrialized production be limited, people begin through blended, fill, stretch, use physics, the chemical means such as synthetic fibers, glass fibre, carbon fibre, natural plant fibre enhancing, modified polymer material, creates the new varieties material of magnanimity numerous and complicated, meets the ever-increasing needs of people.But also there is many problems in this process, one is adding of a large amount of foreign matter, make the reuse of material very difficult, cause the huge waste of resource, on the other hand, when different material is used with after all, boundary strength is a very scabrous problem, these years inorganic material organise, the inorganization work of organic material, exactly for addressing this problem the great efforts done, but actual development is all very slow.
Three phases is the latter stage nineties, in, under beautiful scientist promotes, people propose the concept of nano modification, expect adding by a small amount of nano-substance, reach that people in the past strengthen, the effect of modification; But due to limitation of the technology, this effort progress is very slow.
Four-stage originates in European Union in 2000 and has promulgated that " EuropeanUniondirectiveontheend-of-lifeofvehicles (ELV) " subsidizes the research of thermoplasticity self-reinforced material, within 2004, first University of Leeds (UniversityofLeeds) scientist proposes single polymers composite concept and develops polyethylene system material, is domesticly called self-reinforcing polymer.
After this, the research and development of self-reinforcing polymer obtains the concern of many researchers and obtains a lot of achievement, wherein, the research of 2007, S.Houshyar confirmed that the mechanical performance of self-reinforced polymer composite not only depends on the content of fiber, also depend on the bonding interface between high-melting fibre and low-melting-point resin.
Current self-reinforcing polymer comparatively successfully suppresses manufacture method pellicular cascade method and melt molding two kinds:
Pellicular cascade method be by polymer fiber uniform winding on metal frame, then low melting point polymer film is spread, at a certain temperature by upper and lower pressing metal plates, now low melting point polymer film melts dipping polymerization fibres, in cooling procedure subsequently, bonding for the fiber entirety that becomes also is obtained self-reinforcing polymer material by low melting point polymer cooling.The shortcoming of the method is because in processing technology window, the viscosity of low melting point polymer is high, is difficult to completely by fiber impregnation, and the air in system is also difficult to discharge, and is therefore difficult to the uniformity ensureing self-reinforced material.
Melt molding is that first high-melting-point polymer and low melting point polymer to be shaped to core by the method for co-extrusion-stretching be high-melting-point polymer, and cortex is sandwich structure circle silk or the flat filament of low melting point polymer, is then compiled into fabric.The method mould is made up of metal frame and flat plate mold, and the inside dimensions of metal frame is greater than flat plate mold side dimension.When suppressing, being fixed on by fabric on a metal frame, putting between the upper and lower flat board of mould, then apply uniform temperature and pressure, now cortex polymer melts bonding, and cored structure is retained, thus obtains self-reinforcing polymer sheet material.The method advantage is that the material property obtained is good, and shortcoming is complicated operation, Process temperature ranges narrow (within 5 DEG C), limits its application.
Summary of the invention
In order to solve above technical problem, confession of the present invention a kind of self-reinforcing PP composite material sheet material and preparation method, it is wide that the method has process window, Device-General, and feature simple to operate, is suitable for large-scale industrial production.
Solve a kind of self-reinforcing PP composite material sheet material in the present invention of above technical problem, it is characterized in that: described composite board is coated with by 2-30 layer surface the sheet material of layer structure that the upper and lower overlap of polyacrylic polypropylene woven cloth puts together, obtains through hot pressing, applies the 3-15% that polyacrylic weight per unit area part is polypropylene woven cloth weight per unit area part.
Described polypropylene woven cloth is the braid of polypropylene fibre after drawn orientation or polypropylene flat-filament braiding.
Described polypropylene woven cloth is the braid of plain weave, twill, satin weave, grid or other texture form.
The described polypropylene fibre of drawn equipment stretch orientation or the basic material of polypropylene flat-filament are HOPP, and stretch orientation multiple is 5-20 times.
Stretch orientation multiple affects timber intensity, and stretch orientation value is larger, and the strength of materials is larger, but is not that stretch orientation multiple is the bigger the better, to material during certain value easily number split.
Stretch orientation multiple described in further optimisation technique scheme is 6-12 times.
Described stretch orientation multiple is 7 times.
Described polypropylene is HOPP or the modification HOPP of high fluidity, and its melt flow rate (MFR) is 10-30g/10min.
Described hot pressing is that hot pressing is molded, and time shaping, polypropylene woven cloth pile is put into direct weighting to authorized pressure between bolster and carried out suppressing after completing.
Described hot pressing is molded, and forming temperature is 170-200 DEG C, and molding time is 10-180s, and pressure is 0.5-20MPa.
The plain weave, twill, satin weave, grid or other texture form that adopt the polypropylene fibre of drawn orientation or polypropylene flat-filament to weave in the present invention, surface is coated with polyacrylic fabric, it is one group with the polypropylene woven cloth of 2-30 layer, adopt without the way of restraint, molded by hot pressing.
Concrete preparation process is as follows:
(1) raw material and equipment is prepared: polypropylene woven cloth, polypropylene and relevant equipment;
(2) with stretcher, polypropylene woven cloth is stretched, make its stretch orientation multiple be required multiple;
(3) with coating equipment, polypropylene is coated on polypropylene woven cloth according to certain amount;
(4) the polypropylene woven cloth in step (3) is carried out cutting according to mould size, time shaping, upper and lower overlap puts together, put into direct weighting between bolster again to suppress to authorized pressure, be then cooled to less than 50 DEG C immediately, take out goods; Mould is made up of upper and lower two flat boards, mould Rimless.
The present invention all adopts existing mature equipment technology, reduces equipment investment expense and risk; Simplify pressing process, the sheet material from 2 layers to 30 layers of different-thickness can be prepared, widen processing technology window, production operation is easy, error probability reduces, make the process of product be easy to control, stability and the finished product of product quality are greatly improved, and are more suitable for large-scale industrial production.Sheet material in the present invention has good effect in the performances such as hot strength, bending strength and bending modulus.
Detailed description of the invention
With specific embodiment, technical scheme of the present invention is described below, but protection scope of the present invention is not limited thereto, described percentage is mass percent:
Embodiment 1
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, and by showering mode at woven roving surface coating polypropylene Z30S, polypropylene Z30S weight per unit area number is 10% of polypropylene woven cloth weight per unit area.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 2 layers, be placed between bolster, boost to 1MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Mould is made up of upper and lower two flat boards, mould Rimless.Polypropylene melt flow rate is 10g/10min.
Table 1
Embodiment 2
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, is the polypropylene Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 3MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 30g/10min.
Table 2
Embodiment 3
Employing stretching ratio is the polypropylene fibre grid woven cloth of 7 times, is the polypropylene Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 15g/10min.
Table 3
Embodiment 4
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, is the polypropylene Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 185 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 20g/10min.
Table 4
Embodiment 5
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, is the polypropylene Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 200 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 30s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 25g/10min.
Table 5
Embodiment 6
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, is the polypropylene Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 18MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 15g/10min.
Table 6
Embodiment 7
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, is the polypropylene Z30S of 15% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 18g/10min.
Table 7
Embodiment 8
Employing stretching ratio is the polypropylene grid woven cloth of 7 times, is the modification HOPP of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 28g/10min.
Table 8
Embodiment 9
Employing stretching ratio is the polypropylene grid woven cloth of 10 times, is the Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 23g/10min.
Table 9
Embodiment 10
Employing stretching ratio is the polypropylene grid woven cloth of 15 times, is the Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 26g/10min.
Table 10
Embodiment 11
Employing stretching ratio is the polypropylene grid woven cloth of 17 times, is the Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 22g/10min.
Table 11
Embodiment 12
Employing stretching ratio is the polypropylene grid woven cloth of 17 times, is the Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 15MPa rapidly, mold temperature set is 185 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 120s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 16g/10min.
Table 12
Embodiment 13
Employing stretching ratio is the polypropylene grid woven cloth of 17 times, is the polypropylene Z30S of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 15MPa rapidly, mold temperature set is 200 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 30s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 20g/10min.
Table 13
Embodiment 14
Employing stretching ratio is the polypropylene grid woven cloth of 17 times, is the modification HOPP of 10% of polypropylene woven cloth weight per unit area by showering mode at woven roving surface coating weight per unit area number.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 10 layers, be placed between bolster, boost to 7.5MPa rapidly, mold temperature set is 170 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 180s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 20g/10min.
Table 14
Embodiment 15
Adopting the polypropylene grid woven cloth of stretching ratio 5 times, is the high fluidity HOPP of 3% of polypropylene woven cloth weight per unit area at woven roving surface coating weight per unit area number by showering mode.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 3 layers, be placed between bolster, boost to 0.5MPa rapidly, mold temperature set is 190 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 10s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 12g/10min.
Embodiment 16
Adopting the polypropylene grid woven cloth of stretching ratio 6 times, is the modification HOPP of 8% of polypropylene woven cloth weight per unit area at woven roving surface coating weight per unit area number by showering mode.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 20 layers, be placed between bolster, boost to 20MPa rapidly, mold temperature set is 195 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 90s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 19g/10min.
Embodiment 17
Adopting the polypropylene grid woven cloth of stretching ratio 12 times, is the modification HOPP of 5% of polypropylene woven cloth weight per unit area at woven roving surface coating weight per unit area number by showering mode.Coated polypropylene woven cloth is cut into the size matched with mould size, stack 12 layers, be placed between bolster, boost to 10MPa rapidly, mold temperature set is 175 DEG C, is cooled to less than 50 DEG C immediately, takes out goods after pressurization 70s, obtain self-reinforcing PP composite material sheet material, plate construction is layer structure.Polypropylene melt flow rate is 27g/10min.
Control group 1
Other content is as embodiment 2, and employing stretching ratio is the polypropylene grid woven cloth of 3 times.
Control group 2
Other content is as embodiment 2, and employing stretching ratio is the polypropylene grid woven cloth of 25 times.
Control group 3
Other content is as embodiment 1, and mold temperature set is 160 DEG C.
Control group 4
Other content is as embodiment 1, and polypropylene melt flow rate is 5g/10min.
Product performance index contrast is as follows:
Table 15
Claims (9)
1. a self-reinforcing PP composite material sheet material, it is characterized in that: described composite board is coated with by 2-30 layer surface the sheet material of layer structure that the upper and lower overlap of polyacrylic polypropylene woven cloth puts together, obtains through hot pressing, applies the 3-15% that polyacrylic weight per unit area part is polypropylene woven cloth weight per unit area part.
2. a kind of self-reinforcing PP composite material sheet material according to claim 1, is characterized in that: described polypropylene woven cloth is the braid of polypropylene fibre after drawn orientation or polypropylene flat-filament braiding.
3. a kind of self-reinforcing PP composite material sheet material according to claim 1 and 2, is characterized in that: described polypropylene woven cloth is the braid of plain weave, twill, satin weave, grid or other texture form.
4. a kind of self-reinforcing PP composite material sheet material according to claim 2, is characterized in that, the polypropylene fibre of described drawn orientation or the stretch orientation multiple of polypropylene flat-filament are 5-20 times.
5. a kind of self-reinforcing PP composite material sheet material according to claim 4, is characterized in that, described stretch orientation multiple is 6-12 times.
6. a kind of self-reinforcing PP composite material sheet material according to claim 5, it is characterized in that, described stretch orientation multiple is 7 times.
7. a kind of self-reinforcing PP composite material sheet material according to claim 1, is characterized in that: described polypropylene is HOPP or modification HOPP, and its melt flow rate (MFR) is 10-30g/10min.
8. a kind of self-reinforcing PP composite material sheet material according to claim 1, it is characterized in that: described hot pressing is that hot pressing is molded, time shaping, polypropylene woven cloth pile is put into direct weighting to authorized pressure between bolster and is carried out suppressing after completing.
9. a kind of self-reinforcing PP composite material sheet material according to claim 6, it is characterized in that: described hot pressing is molded, forming temperature is 170-200 DEG C, and molding time is 10-180s, and pressure is 0.5-20MPa.
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| CN106273527A (en) * | 2016-09-06 | 2017-01-04 | 安徽开润股份有限公司 | A kind of production method of the high intensity hot-forming composite of film woven cloth |
| CN108656690A (en) * | 2018-07-23 | 2018-10-16 | 沈阳丰禾包装有限公司 | A kind of high-intensity fiber composite plate structure |
| CN108656690B (en) * | 2018-07-23 | 2024-05-28 | 沈阳丰禾包装有限公司 | High-strength fiber composite board structure |
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Address after: 610041 No. fifth, second building, 5 Gaoxin East Road, Chengdu high tech Zone, Sichuan, China No. A Applicant after: Chengdu Tong Ming Creative Technology Limited Address before: 610041 No. fifth, second building, 5 Gaoxin East Road, Chengdu high tech Zone, Sichuan, China No. A Applicant before: Chengdu Tongming New Material Technology Co., Ltd. |
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Application publication date: 20151223 |