CN110202906A - A kind of preparation process of plant fiber enhancing thermoplastic composite - Google Patents
A kind of preparation process of plant fiber enhancing thermoplastic composite Download PDFInfo
- Publication number
- CN110202906A CN110202906A CN201910536825.8A CN201910536825A CN110202906A CN 110202906 A CN110202906 A CN 110202906A CN 201910536825 A CN201910536825 A CN 201910536825A CN 110202906 A CN110202906 A CN 110202906A
- Authority
- CN
- China
- Prior art keywords
- plant fiber
- thermoplastic composite
- fiber enhancing
- composite
- pressure
- Prior art date
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- 239000000835 fibers Substances 0.000 title claims abstract description 88
- 239000002131 composite materials Substances 0.000 title claims abstract description 50
- 230000002708 enhancing Effects 0.000 title claims abstract description 41
- 238000002360 preparation methods Methods 0.000 title claims abstract description 37
- 238000000034 methods Methods 0.000 title claims abstract description 30
- 229920001169 thermoplastics Polymers 0.000 title claims abstract description 28
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000005755 formation reactions Methods 0.000 claims abstract description 4
- 238000002203 pretreatment Methods 0.000 claims abstract description 4
- 239000002759 woven fabrics Substances 0.000 claims abstract description 4
- 241000196324 Embryophyta Species 0.000 claims description 43
- 239000004744 fabrics Substances 0.000 claims description 43
- 239000010408 films Substances 0.000 claims description 41
- 241001081830 Degeneriaceae Species 0.000 claims description 27
- 235000013311 vegetables Nutrition 0.000 claims description 26
- 239000003292 glue Substances 0.000 claims description 25
- 239000011347 resins Substances 0.000 claims description 24
- 229920005989 resins Polymers 0.000 claims description 24
- FPYJFEHAWHCUMM-UHFFFAOYSA-N Maleic anhydride Chemical compound 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- VZCYOOQTPOCHFL-UHFFFAOYSA-N fumaric acid Chemical compound 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- 239000007788 liquids Substances 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling 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
- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—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 not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
-
- 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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
-
- 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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/12—Pressure
Abstract
Description
Technical field
The present invention relates to a kind of preparation processes of plant fiber enhancing thermoplastic composite.
Background technique
Plant fiber is widely used on composite material as natural reproducible material, since plant fiber is in height Temperature will appear carbonization i.e. not heatproof the characteristics of, therefore be have no idea by extrusion process realize composite material produce.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies of existing technologies, a kind of plant fiber enhancing thermoplastic composite is provided Preparation process can carry out film production by squeezing out extruding equipment, then standby continuous by continuous double steel bands multiple mechanism with pressure Plant fiber enhancing PP composite material sheet.
Realizing the technical solution of above-mentioned purpose is: a kind of preparation process of plant fiber enhancing thermoplastic composite, packet Include following steps:
Woven fabric step: sponge is made into vegetable fibre fabric by S1；
S2, pre-treatment step: being made into water-soluble emulsion as matrix using the High Flowability PP resin that maleic anhydride is grafted, And water-soluble emulsion is equably sprayed to the front and back sides for the vegetable fibre fabric that the step S1 is obtained, using infrared baking oven It is dried, so that one layer of polarity PP coating is adhered in the front and back sides of vegetable fibre fabric respectively；
S3, pultrusion film formation step: the High Flowability PP resin pultrusion for being grafted maleic anhydride using casting films extrusion equipment At the modified glue film of PP, the grammes per square metre scope of the modified glue film of the PP is 20 grams per square meters~200 grams per square meters；
S4 unreels step: will be unreeled by the pretreated vegetable fibre fabric of step S2 continuous using unwinding device On the steel band of double steel band compounding machines with pressure, while glue film will be modified equably by the good PP of step S3 pultrusion by unwinding equipment The front and back sides of vegetable fibre fabric are laid in, and with the movement of steel band, the modified glue film laying together with vegetable fibre fabric of PP On continuous double steel bands compounding machine with pressure；
S5, heating stepses: with continuously running for steel band, the PP of vegetable fibre fabric and its front and back sides in step S4 changes Property glue film by the heating pressor areas of the continuous double steel band compounding machine with pressure, the modified glue film of PP starts to melt flowing completely, PP Modified glue film and the polarity PP coating on vegetable fibre fabric surface are combined together, and are pressed again, and composite material film is formed；
S6, cooling step: the composite material film handled by step S5 is with pressure compound by continuous double steel bands The cooling pressor areas of machine forms the composite material of plant fiber enhancing PP；
S7, cutting step: using the composite material cutting system for the plant fiber enhancing PP that cutting equipment obtains step S6 Enhance plant fibre sheet material at PP.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, in step S1, the plant fiber Material uses flaxen fiber, and the vegetable fibre fabric uses woven roving or unidirectional fiber cloth.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite in step S1, is woven using arrow shaft Flaxen fiber is woven into woven roving by machine；The unidirectional fiber cloth is warp cloth, and flaxen fiber is made into warp cloth using warping apparatus.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, in step S2, the water-soluble cream The preparation flow of liquid is as follows:
Prepared lotion is made in the High Flowability PP resin addition of maleic anhydride grafting in water first, in the preparation lotion The content of the High Flowability PP resin of maleic anhydride grafting is 40%；
Then preparation lotion is placed in 100 DEG C of emulsifying kettle and will be emulsified；
Deionized water is finally added in emulsifying kettle and is deployed into water-soluble emulsion, maleic anhydride is grafted in the water-soluble emulsion High Flowability PP resin content between 5%~20%.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, in step S2, the infrared baking oven Interior temperature is 100 DEG C~120 DEG C, and the time of drying process is 2~4 minutes.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, in step S3, the maleic anhydride The melt index range of the High Flowability PP resin of grafting is 60g/10min~200g/10min, the maleic anhydride grafting The fusing point of High Flowability PP resin is 40 DEG C~180 DEG C.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, the modified glue film of the PP with a thickness of 20 microns~200 microns.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, in step S5, continuous double steel The heating temperature of heating pressor areas with compounding machine with pressure is at 180 DEG C~200 DEG C, and pressure is in 20bar~80bar.
A kind of preparation process of above-mentioned plant fiber enhancing thermoplastic composite, in step S6, continuous double steel The temperature of cooling pressor areas with compounding machine with pressure is at 25 DEG C~40 DEG C, and pressure is in 20bar~80bar.
The preparation process of plant fiber enhancing thermoplastic composite of the invention, can be carried out by squeezing out extruding equipment Film production, then by continuous double steel band multiple mechanisms with pressure for the composite material sheet of continuous plant fiber enhancing PP.
Detailed description of the invention
Fig. 1 is the flow diagram for the preparation process that plant fiber of the invention enhances thermoplastic composite.
Specific embodiment
It is right with reference to the accompanying drawing in order to make those skilled in the art be better understood when technical solution of the present invention Its specific embodiment is described in detail:
Referring to Fig. 1, highly preferred embodiment of the present invention, a kind of preparation work of plant fiber enhancing thermoplastic composite Skill, comprising the following steps:
Woven fabric step: sponge is made into vegetable fibre fabric by S1；Sponge uses flaxen fiber, plants Fibres fabric uses woven roving or unidirectional fiber cloth, and arrow shaft braider can be used by flaxen fiber and be woven into woven roving；It is unidirectional fine Wei Bu is warp cloth, and warping apparatus can be used by flaxen fiber and be made into warp cloth；
S2, pre-treatment step: being made into water-soluble emulsion as matrix using the High Flowability PP resin that maleic anhydride is grafted, And water-soluble emulsion is equably sprayed to the front and back sides for the vegetable fibre fabric that step S1 is obtained, it is carried out using infrared baking oven It is dried, so that one layer of polarity PP coating is adhered in the front and back sides of vegetable fibre fabric respectively；Temperature in infrared baking oven is 100 DEG C~120 DEG C, the time of drying process is 2~4 minutes；
S3, pultrusion film formation step: the High Flowability PP resin pultrusion for being grafted maleic anhydride using casting films extrusion equipment At the modified glue film of PP, the grammes per square metre scope of the modified glue film of PP is 20 grams per square meters~200 grams per square meters；The modified glue film of PP with a thickness of 20 Micron~200 microns；
S4 unreels step: will be unreeled by the pretreated vegetable fibre fabric of step S2 continuous using unwinding device 2 On the steel band 11 of double steel band compounding machines with pressure, while will be equal by the modified glue film of the good PP of step S3 pultrusion by unwinding equipment 3 It is laid in the front and back sides of vegetable fibre fabric evenly, and with the movement of steel band, the modified glue film of PP is together with vegetable fibre fabric It is laid on continuous double steel bands compounding machine with pressure；
S5, heating stepses: with continuously running for steel band, the PP of vegetable fibre fabric and its front and back sides in step S4 changes Property glue film by the heating pressor areas 12 of continuous double steel band compounding machine with pressure, the modified glue film of PP starts to melt flowing completely, and PP changes Property glue film and the polarity PP coating on vegetable fibre fabric surface be combined together, press again, formed composite material film；Heating adds The heating temperature of pressure area is at 180 DEG C~200 DEG C, and pressure is in 20bar~80bar；
S6, cooling step: the composite material film handled by step S5 is by continuous double steel bands compounding machine with pressure Cooling pressor areas 13 forms the composite material of continuous plant fiber enhancing PP；The temperature of cooling pressor areas at 25 DEG C~40 DEG C, Pressure is in 20bar~80bar；
S7, cutting step: using the composite material cutting system for the plant fiber enhancing PP that cutting equipment 4 obtains step S6 Enhance plant fibre sheet material 5 at PP.
In step S2, the High Flowability PP resin of maleic anhydride grafting is for cream using the P353 series of Du Pont Change with aqueous emulsion, for the surface treatment of fabric fibre fabric, the preparation flow of water-soluble emulsion is as follows:
Prepared lotion is made in the High Flowability PP resin addition of maleic anhydride grafting in water first, in the preparation lotion The content of the High Flowability PP resin of maleic anhydride grafting is 40%；
Then preparation lotion is placed in 100 DEG C of emulsifying kettle and will be emulsified；
Deionized water is finally added in emulsifying kettle and is deployed into water-soluble emulsion, maleic anhydride is grafted in the water-soluble emulsion High Flowability PP resin content between 5%~20%.
In step S3, the High Flowability PP resin of maleic anhydride grafting squeezes out glue film and uses, and carries out glue film again and surface Processed fabric fibre fabric is combined into composite material of plant fiber on steel tape press.The step in maleic acid The melt index range of the High Flowability PP resin of acid anhydride grafting is 60g/10min~200g/10min, and fusing point is 40 DEG C~180 ℃.It is preferred that 165 DEG C of the fusing point of PP resin, may insure that temperature will not be too high in the production process of composite material in this way, so that The performance of plant fibre high-temp carbonization effect composite material.The PP resin of high fluidity just has very low when being completely melt Viscosity can be penetrated into preferably in fabric fibre when producing composite material.
In conclusion the preparation process of plant fiber enhancing thermoplastic composite of the invention, can be drawn by squeezing out It squeezes equipment and carries out film production, then enhance the composite wood of PP for continuous plant fiber by continuous double steel band multiple mechanisms with pressure Media sheet.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention, And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above Change, modification will all be fallen within the scope of claims of the present invention.
Claims (9)
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| CN101229700A (en) * | 2008-02-15 | 2008-07-30 | 南京林业大学 | Jute and plastic compound material plank stuff and manufacturing method thereof |
| CN104497414A (en) * | 2014-11-27 | 2015-04-08 | 东华大学 | Method of preparing PP/CFF thermoplastic composite material from MAPP-CFF prepreg |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101229700A (en) * | 2008-02-15 | 2008-07-30 | 南京林业大学 | Jute and plastic compound material plank stuff and manufacturing method thereof |
| CN104497414A (en) * | 2014-11-27 | 2015-04-08 | 东华大学 | Method of preparing PP/CFF thermoplastic composite material from MAPP-CFF prepreg |
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