CN106739387A - A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization - Google Patents
A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization Download PDFInfo
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- CN106739387A CN106739387A CN201510811342.6A CN201510811342A CN106739387A CN 106739387 A CN106739387 A CN 106739387A CN 201510811342 A CN201510811342 A CN 201510811342A CN 106739387 A CN106739387 A CN 106739387A
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- composite material
- reinforced composite
- steel belt
- polypropylene
- pressing machine
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Classifications
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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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
-
- 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
Abstract
The present invention relates to a kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization, comprise the following steps：First, low melting point acrylic resin is extruded into melt or directly uses film；" sandwich " structure is stacked into the high-melting-point polypropylene fibre or fabric for being cooled to 10 DEG C -20 DEG C or normal temperature again, base layer and fibrage replace or interval composition；Finally continuous prodution is realized using double-steel belt pressing machine pressurization, you can obtain the controllable polypropylene self-reinforced composite material of thickness.Present invention process is simple, and production efficiency is high, low production cost, and the excellent product performance for preparing.
Description
Technical field
The invention belongs to field of composite material preparation, especially a kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization.
Background technology
Polypropylene wide material sources, it is cheap, it is one of five big general-purpose plastics, the features such as shaping with good physical and mechanical properties, chemical resistance and easy processing；But polypropylene there is also shortcoming, such as intensity is not high, finished product shrinkage factor is big, the easy warpage of product.In order to overcome these shortcomings, it is modified using modification by copolymerization, blending, composite strengthening etc. typically.
Current polypropylene modification is general based on glass, inorganic matter nano-particle, organic matter blend graft etc., due to being not belonging to material of the same race with polypropylene, the difference of physicochemical properties is certainly existed between matrix and reinforcement, compatibility is bad, the composite that then researcher starts R and D matrix and reinforcement is material of the same race.
1975, Britain Capitai and Porter proposed single polymers composite first based on high density polyethylene (HDPE)（SPCs, single polymer composites）Concept.
1993, Hine and Ward was successfully prepared Self-reinforced Polyethylene Composites, but processing temperature window very little using pressure sintering.
2007, Alcock and Peijis was successfully prepared polypropylene self-reinforced composite material using coetrusion, and the use of co-polymeric resin significantly expands processing temperature window.
2012, Kmetty á and B á r á ny T were prepared for polypropylene self-reinforced composite material using injection molding process, and the use of polypropylene thermoplastic elastomer further expands processing temperature window.
The main preparation methods of current self-reinforced composite material have pressure sintering, overheat method and film insertion pressure sintering etc..
Pressure sintering is to prepare composite by using the fiber of same material, band, the mode that heat pressurization with matrix of weaving cotton cloth, and is also most ripe, topmost preparation method, but its processing temperature window very little.
Overheat method is by stretching fiber, to limit its contraction, so as to control moving freely for strand in fiber, the melt temperature of fiber will be improved, and complex higher than the fiber of non-stretched orientation, but technique, relatively costly.
Method laminated into type is that resin matrix first is hot pressed into film, then is alternately stacked placement with fiber or fabric, and hot pressing prepares composite.
The content of the invention
The purpose of the present invention is exactly to provide that a kind of processing temperature window is big, high performance polypropylene self-reinforced composite material preparation method for the defect for overcoming several techniques of the above.
In order to solve the above technical problems, the technical scheme that the present invention prepares polypropylene self-reinforced composite material is as follows：
Step（1）First, low melting point acrylic resin is extruded into melt or directly uses film；Step（2）" sandwich " structure is stacked into the high-melting-point polypropylene fibre or fabric for being cooled to 10 DEG C -20 DEG C or normal temperature again, base layer and fibrage replace or interval composition；Step（3）Continuous prodution finally is realized using double-steel belt pressing machine pressurization, that is, obtains polypropylene self-reinforced composite material.
The step（1）Low melting point polypropylene for low melting point COPP.
The step（2）" sandwich " structure in the fibrage number of plies be 1 layer and the above number of plies.
The step（3）Device therefor is double-steel belt pressing machine, and hot pressing temperature is 160-180 DEG C, and steel belt operating speed is 0.1-15m/min, and the pressure of hot pressing is 3-15MPa.
Compared with existing technologies, the invention has the characteristics that and advantage：
（1）Hot pressing temperature scope is 20 DEG C, has greatly widened processing temperature window；（2）In hot pressing, acrylic resin is all melted, polypropylene fibre surface portion is melted, fiber can be preferably impregnated, fibrous inner structure is remained intact substantially, and molecularly oriented is not destroyed, bonding between matrix and fiber is good, tensile property, bending property and the shock resistance of composite are drastically increased, up to 125MPa, bending strength is up to 31MPa for its tensile strength；（3）The present invention uses double-steel belt pressing machine, and process is simple, production efficiency is high, low cost；（4）Matrix and reinforcement are all polypropylene, beneficial to the recovery of material, environmental protection.
Brief description of the drawings
Fig. 1 is one kind of " sandwich " structural representation of the invention, but is not limited only to this structural representation, wherein 1 is polypropylene fibre layer, 2 is polypropylene resin layer.
Fig. 2 is the one kind in double-steel belt pressing machine production schematic diagram of the present invention, wherein 1 is polypropylene film, 2 is polypropylene fibre, 3 is steel band driving wheel, 4 is the preheating section of double-steel belt pressing machine, and 5 is the heating pressurized segment of double-steel belt pressing machine, and 6 is the cooling pressurize section of double-steel belt pressing machine.
Fig. 3 is the one kind in double-steel belt pressing machine production schematic diagram of the present invention, wherein 1 is polypropylene film, 2 is polypropylene fibre, and 3 is preheating drying tunnel, and 4 is steel band driving wheel, and 5 is the heating pressurized segment of double-steel belt pressing machine, and 6 is the cooling pressurize section of double-steel belt pressing machine.
Fig. 4 is the one kind in double-steel belt pressing machine of the present invention-extruder production schematic diagram, wherein 1 is extruder, 2 is melt polypropylene, 3 is polypropylene fibre, and 4 is steel band driving wheel, and 5 is the preheating section of double-steel belt pressing machine, 6 is the heating pressurized segment of double-steel belt pressing machine, and 7 is the cooling pressurize section of double-steel belt pressing machine.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description, but protection domain is not limited thereto.
Embodiment 1
A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization：
（1）First, acrylic resin copolymer pellet is prepared into the polypropylene-base body thin film of 0.1mm on tablet press machine, tablet press machine temperature is 200 DEG C, and pressure is 10MPa, and the time is 5min；（2）Will（1）In obtained polypropylene-base body thin film and polypropylene fibre fabric be cut into width for 0.5m sizes, and be stacked into " sandwich " structure, polypropylene fibre fabric layerses are 5 layers, and polypropylene-base body thin film is 6 layers；（3）Will（2）In " sandwich " structure be put into double-steel belt pressing machine and carry out hot pressing, hot pressing temperature is 175 DEG C, and hot pressing pressure is 10MPa, and the speed of service of steel band is 1.5m/min, prepares polypropylene self-reinforced composite material sheet material.
Through performance test, polypropylene self-reinforced composite material prepared by the method for embodiment 1 has preferably mechanical property, and, up to 125MPa, bending strength is up to 31MPa, and shock resistance is good for its tensile strength.
The above, is only presently preferred embodiments of the present invention, and any limitation is not made to the technology of the present invention scope, i.e., the equivalence changes that all contents according to scope of the present invention patent are made with modification, all should be technology category of the invention.
Claims (10)
1. a kind of method that use double-steel belt pressing machine pressurization continuously prepares polypropylene self-reinforced composite material, it is characterized in that, the composite is " sandwich " structure that multi-layer polypropylene fiber or fabric and polypropylene matrix melt or film replace or be spaced apart, continuous prodution finally is realized using double-steel belt pressing machine pressurization, the controllable polypropylene self-reinforced composite material of thickness is obtained.
2. a kind of method that use double-steel belt pressing machine pressurization as claimed in claim 1 continuously prepares polypropylene self-reinforced composite material, it is characterised in that comprise the following steps：（1）First, low melting point acrylic resin is extruded into melt or directly uses film;（2）" sandwich " structure is stacked into the high-melting-point polypropylene fibre or fabric for being cooled to 10 DEG C -20 DEG C or normal temperature again, base layer and fibrage replace or interval composition;（3）Continuous prodution finally is realized using double-steel belt pressing machine pressurization, that is, obtains polypropylene self-reinforced composite material.
3. the method that a kind of use double-steel belt pressing machine pressurization according to claim 2 continuously prepares polypropylene self-reinforced composite material, it is characterised in that the step（3）Middle device therefor is double-steel belt pressing machine.
4. a kind of polypropylene self-reinforced composite material according to claim 2, it is characterised in that：The acrylic resin is the acrylic resin copolymer of low melting point,.
5. a kind of polypropylene self-reinforced composite material according to claim 2, it is characterised in that：The polypropylene fibre or fabric are high-melting-point, highly oriented HOPP, and the polypropylene fibre or fabric temperature of conveying are normal temperature or 10 DEG C -20 DEG C or so.
6. a kind of polypropylene self-reinforced composite material according to claim 2, it is characterised in that：The step（2）In " sandwich " structure be more than 1 layer of fibrage and 1 layer of resin bed and 1 layer of fibrage and more than 1 layer of resin bed.
7. the method that a kind of use double-steel belt pressing machine pressurization according to claim 2 continuously prepares polypropylene self-reinforced composite material, it is characterised in that the step（3）The breadth of middle product is 0.3m-1.5m.
8. the method that a kind of use double-steel belt pressing machine pressurization according to claim 2 continuously prepares polypropylene self-reinforced composite material, it is characterised in that the step（3）The temperature of middle hot pressing is 160 DEG C -180 DEG C.
9. the method that a kind of use double-steel belt pressing machine pressurization according to claim 2 continuously prepares polypropylene self-reinforced composite material, it is characterised in that the step（3）Middle steel belt operating speed is 0.1-15m/min.
10. the method that a kind of use double-steel belt pressing machine pressurization according to claim 2 continuously prepares polypropylene self-reinforced composite material, it is characterised in that the step（3）The pressure of middle hot pressing is 3-15MPa.
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| CN201510811342.6A CN106739387A (en) | 2015-11-21 | 2015-11-21 | A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization |
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| CN201510811342.6A CN106739387A (en) | 2015-11-21 | 2015-11-21 | A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107718813A (en) * | 2017-09-26 | 2018-02-23 | 江南大学 | A kind of high-performance fiber base all-polymer composite board and preparation method thereof |
| CN108819289A (en) * | 2018-08-06 | 2018-11-16 | 泰安石英复合材料有限公司 | A kind of manufacturing line and manufacturing method of luggage body |
| CN110228263A (en) * | 2019-07-12 | 2019-09-13 | 苏州洛瑞卡新材料科技有限公司 | A kind of composite membrane film sticking equipment |
| CN112549703A (en) * | 2020-12-04 | 2021-03-26 | 泰安石英复合材料有限公司 | Preparation method of PP fiber fabric laminated composite sheet and sheet obtained by method |
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| CN103112224A (en) * | 2011-11-17 | 2013-05-22 | 上海杰事杰新材料(集团)股份有限公司 | Self-reinforced polypropylene composite material and preparation method thereof |
| US20140147642A1 (en) * | 2012-09-06 | 2014-05-29 | Xamax Industries, Inc. | Composite sheet material and method for forming the same |
| CN104139591A (en) * | 2014-07-04 | 2014-11-12 | 广东宾豪旅行用品有限公司 | Toughened PP self-enhanced composite material and preparation method thereof |
| CN104608447A (en) * | 2015-01-16 | 2015-05-13 | 宁波华业材料科技有限公司 | Continuous fiber-reinforced flame-retardant PP (polypropylene) board and preparation method thereof |
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2015
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Patent Citations (6)
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| CN101293416A (en) * | 2008-06-05 | 2008-10-29 | 张锡卿 | Production method for base material of paper food container |
| CN103112224A (en) * | 2011-11-17 | 2013-05-22 | 上海杰事杰新材料(集团)股份有限公司 | Self-reinforced polypropylene composite material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107718813A (en) * | 2017-09-26 | 2018-02-23 | 江南大学 | A kind of high-performance fiber base all-polymer composite board and preparation method thereof |
| CN107718813B (en) * | 2017-09-26 | 2019-07-23 | 江南大学 | A kind of high-performance fiber base all-polymer composite board and preparation method thereof |
| CN108819289A (en) * | 2018-08-06 | 2018-11-16 | 泰安石英复合材料有限公司 | A kind of manufacturing line and manufacturing method of luggage body |
| CN110228263A (en) * | 2019-07-12 | 2019-09-13 | 苏州洛瑞卡新材料科技有限公司 | A kind of composite membrane film sticking equipment |
| CN112549703A (en) * | 2020-12-04 | 2021-03-26 | 泰安石英复合材料有限公司 | Preparation method of PP fiber fabric laminated composite sheet and sheet obtained by method |
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