CN208430073U - Fiber alignment enhances thermoplastic polymer composite material precast body - Google Patents
Fiber alignment enhances thermoplastic polymer composite material precast body Download PDFInfo
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- CN208430073U CN208430073U CN201820952530.XU CN201820952530U CN208430073U CN 208430073 U CN208430073 U CN 208430073U CN 201820952530 U CN201820952530 U CN 201820952530U CN 208430073 U CN208430073 U CN 208430073U
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Abstract
Fiber alignment enhances thermoplastic polymer composite material precast body, is related to a kind of composite preform.Purpose is that the feeding difficult point that solves the problems, such as to prepare fibre reinforced thermoplastic polymer composite material using long fibre or continuous fiber in existing extrusion process is big.The utility model fiber alignment enhancing thermoplastic polymer composite material precast body is made of polymeric matrix and fiber；Polymeric matrix is web-like or tabs shape；Fibers parallel is between the egative film and cover plate that polymeric matrix length direction is set to the polymeric matrix of the volume layer inner space of the polymeric matrix of web-like, polymeric matrix inner cavity or tabs shape.The precast body can directionally bring long fibre or continuous fiber into extruder by polymeric matrix when squeezing out, and realize feeding, solving the problems, such as can not feeding when long fibre or continuous fiber are difficult to mix and squeeze out with polymer particle.The utility model is suitable for preparing composite material.
Description
Technical field
The utility model relates to a kind of thermoplastic polymer composite material precast bodies.
Background technique
The high mechanical properties and design of fibre reinforced thermoplastic polymer composite material are strong, and application field is very extensive.
Wherein polymer is primary and reclaiming type thermoplastic polymer, such as polyethylene, polypropylene, polylactic acid, polyvinyl chloride, ethylene-vinegar
Sour ethylene copolymer, engineering plastics etc.；Reinforcing fiber is divided into natural fiber and two kinds of artificial fiber.Natural fiber includes that wood is fine
The naturally occurring fiber such as dimension, bamboo fibre, cotton fiber, flaxen fiber, stalk fibre, natural fiber have it is light it is high-strength, degradable,
Outstanding advantages of environmentally protective, is used widely in the various fields such as transport, decorations, garden furniture；Artificial fiber
Including carbon fiber, glass fibre, aramid fiber, nylon fiber, polyester fiber, basalt fibre, metallic fiber etc., artificial fiber
Has many advantages, such as the specific strength of superelevation, specific modulus, antifatigue, by anti-in aerospace, chemistry as structural material and functor
Rotten, field of wind power generation is widely applied.Extrusion process is to prepare the common side of fibre reinforced thermoplastic polymer composite material
Method, is divided into two kinds of one-step shaping method and two one-step forming methods, and one-step shaping method is that the staple fiber that will be mixed and polymer particle are straight
Tap into row extrusion molding；And two one-step forming methods are that the staple fiber that will be mixed and plastic pellet first carry out extruding pelletization, then will be short
The compound particle of fiber and polymer carries out extrusion molding.The continuous production of composite material may be implemented in extrusion process, and product is cut
Face size and exterior appearance can realize that preparation process is stablized, and high production efficiency by mold design.
Preparing fibrous raw material used in fibre reinforced thermoplastic polymer composite material by extrusion process at present is staple fiber,
Length is 0.01~3mm；For long fibre or continuous fiber, presently, there are the problem of be: 1, fibre density is low and size
Greatly, in physical mixed, the long fibre of lightweight can be wound, it is difficult to be mixed with polymer particle；2, current extrusion process
Feeding manner is self weight feeding, and length is easy greater than the fiber of 3mm since fibre length is excessive in charging in the prior art
The problems such as winding, accumulation occurs causes to extruder feeding difficulty, or even can not feeding.Therefore, long fibre or continuously fibre at present
Dimension is difficult to prepare polymer composites.And long fibre or continuous fiber are better than the reinforcing effect of staple fiber, meet tubing winding,
The requirement of secondary mould pressing etc..
Utility model content
The utility model in order to solve in existing extrusion process using long fibre or continuous fiber preparation fibre-reinforced thermoplastic
Property polymer composites the big problem of feeding difficult point, propose that a kind of fiber alignment enhancing thermoplastic polymer composite material is pre-
Body processed.
The utility model fiber alignment enhances thermoplastic polymer composite material precast body by polymeric matrix and fiber structure
At；
The polymeric matrix is web-like or tabs shape；Adjacent volume layer constitutes volume layer in the polymeric matrix of the web-like
Gap, most interior volume layer inside is polymer matrix intracoelomic cavity；The polymeric matrix of the tabs shape is made of egative film and cover plate；Lid
Piece overlays on egative film, and one of side of cover plate and one of side of egative film are affixed；
The fibers parallel in polymeric matrix length direction be set to the polymeric matrix of web-like volume layer inner space,
Between the egative film and cover plate of the polymeric matrix of polymeric matrix inner cavity or tabs shape；
The fiber is long fibre or continuous fiber；
The egative film and cover plate with a thickness of 0.03~1mm；
The mass ratio of the polymeric matrix and fiber is 1:(0.11~9)；
Wherein, it after polymeric matrix being rolled into tubular precast body or polymeric matrix being folded slabbing precast body, realizes
Cladding of the polymeric matrix to fiber；It is able to solve long fibre or continuous fiber and is difficult to the problem of mixing with polymer particle；
The polymeric matrix is continuous sheet polymer or non-woven fabrics；
The long stapled length is 10~1000mm；The long fibre is natural fiber or synthetic fibers；It is described continuous
Fiber is natural fiber or synthetic fibers；The natural fiber is wood-fibred, bamboo fibre, cotton fiber, flaxen fiber or stalk fibre
One or more of；The synthetic fibers are one or more of inorfil, metallic fiber or organic fiber；The nothing
Machine fiber is carbon fiber, glass fibre or basalt fibre；The organic fiber is that aramid fiber, nylon fiber or polyester are fine
Dimension；
The material of the polymeric matrix is high density polyethylene (HDPE), polyethylene, polypropylene, polylactic acid, polyvinyl chloride, poly- cream
One or more of acid, ethylene-vinyl acetate copolymer or engineering plastics；The preparation side of the continuous sheet polymeric matrix
Method are as follows: weigh polymer particle and coupling agent, stretched after being uniformly mixed through hot pressing, extrusion-blown modling, extrusion, squeeze out curtain coating or pressure
Prolong, obtains continuous sheet polymeric matrix；The mass ratio of the polymer particle and coupling agent is 1:(0.02~0.08)；It is described
Coupling agent is metatitanic acid lipid coupling agent, isocyanates coupling agent, maleic anhydride grafted polyethylene coupling agent, maleic anhydride grafting
One or more of ized polypropylene coupling agent or silane coupling agent；
The non-woven fabrics material is in terylene, polypropylene fibre, aramid fiber, acrylic fibers, polyamide fibre, polyolefin fibrids, polyvinyl or spandex
It is one or more of.
Above-mentioned fiber alignment enhancing thermoplastic polymer composite material precast body is as raw material in composite material preparation
Using specifically sequentially including the following steps:
By fiber alignment enhancing thermoplastic polymer composite material precast body be placed on heat pressing forming machines carry out it is hot-forming；
Or the fiber end of fiber alignment enhancing thermoplastic polymer composite material precast body towards extruder feed inlet and to extrusion
Then machine feeding carries out extrusion molding；Or fiber alignment is enhanced to the fiber end of thermoplastic polymer composite material precast body
Towards extruder feed inlet and to extruder feeding, then squeezed out, finally by mold mouth discharge carry out calendering formation；Or
By the fiber end of fiber alignment enhancing thermoplastic polymer composite material precast body towards the feed inlet of extruder and to extrusion
Machine feeding, is then squeezed out, and finally mold mouth discharges and carries out pouring molding；Or fiber alignment is enhanced into thermoplastic polymer
The fiber end of composite preform towards extruder feed inlet and to extruder feeding, then squeezed out, finally will
The discharging of mold mouth is wound molding；Or fiber alignment is enhanced to the fiber end court of thermoplastic polymer composite material precast body
To extruder feed inlet and to extruder feeding, then squeezed out, finally by mold mouth discharge carry out lamination molding；Or it will
Fiber alignment enhances the fiber end of thermoplastic polymer composite material precast body towards the feed inlet of extruder and to extruder
Then feeding is squeezed out, be finally pressed and molded the discharging of mold mouth；
The utility model have it is following the utility model has the advantages that
The utility model coats long fibre or continuous fiber first with polymeric matrix to obtain precast body, prefabricated
Body can directionally bring long fibre or continuous fiber into extruder by polymeric matrix when squeezing out, and realize feeding, while benefit
It is mixed with extruder, solving when long fibre or continuous fiber are difficult to mix and squeeze out with polymer particle can not feeding
Problem；It is prepared using the utility model precast body and realizes one-step shaping extrusion or hot pressing, the utility model when prepared by composite material
The polymer composites medium-length fibre or continuous fiber of precast body preparation are to align, and fiber contains in polymer composites
Amount can reach 90%, and mechanical property is better than short fiber reinforced thermoplastic polymer composite material；The fiber in extrusion process
It is stretched, improves the mechanical property of composite material.
Detailed description of the invention
Fig. 1 is 1 schematic diagram of polymeric matrix prepared in embodiment 1；
Fig. 2 is the sectional view of the tubular precast body prepared in embodiment 1；
The sectional view of the tabs shape precast body prepared in Fig. 3 embodiment 2；
The sectional view of the tabs shape precast body prepared in Fig. 4 embodiment 3.
Specific embodiment:
The technical solution of the present invention is not limited to the following list, further includes between each specific embodiment
Any reasonable combination.
Specific embodiment 1: present embodiment fiber alignment enhances thermoplastic polymer composite material precast body by polymerizeing
Object matrix 1 and fiber 2 are constituted；
The polymeric matrix 1 is web-like or tabs shape；Adjacent volume layer constitutes volume in the polymeric matrix 1 of the web-like
Lamellar spacing 4, most interior volume layer inside is polymer matrix intracoelomic cavity 5；The polymeric matrix 1 of the tabs shape is by egative film 6 and cover plate 7
It constitutes；Cover plate 7 overlays on egative film 6, and one of side of cover plate 7 and one of side of egative film 6 are affixed；
The fiber 2 is parallel to the volume layer gap 4 that 1 length direction of polymeric matrix is set to the polymeric matrix 1 of web-like
Between the egative film 6 and cover plate 7 of the polymeric matrix of internal, 5 inside of polymer matrix intracoelomic cavity or tabs shape；
The fiber 2 is long fibre or continuous fiber.
Present embodiment have it is following the utility model has the advantages that
Present embodiment coats long fibre or continuous fiber first with polymeric matrix to obtain precast body, prefabricated
Body can directionally bring long fibre or continuous fiber into extruder by polymeric matrix when squeezing out, and realize feeding, while benefit
It is mixed with extruder, solving when long fibre or continuous fiber are difficult to mix and squeeze out with polymer particle can not feeding
Problem；It is prepared using present embodiment precast body and realizes one-step shaping extrusion or hot pressing, present embodiment when prepared by composite material
The polymer composites medium-length fibre or continuous fiber of precast body preparation are to align, and fiber contains in polymer composites
Amount can reach 90%, and mechanical property is better than short fiber reinforced thermoplastic polymer composite material；The fiber in extrusion process
It is stretched, improves the mechanical property of composite material.
Specific embodiment 2: the present embodiment is different from the first embodiment in that: the polymeric matrix is to connect
Continuous sheet polymer or non-woven fabrics.Other steps and parameter are same as the specific embodiment one.
Specific embodiment 3: the present embodiment is different from the first and the second embodiment in that: the polymeric matrix 1
Mass ratio with fiber 2 is 1:(0.11~9).Other steps and parameter are the same as one or two specific embodiments.
Specific embodiment 4: unlike one of present embodiment and specific embodiment one to three: the long fibre
Length be 10~1000mm.Other steps and parameter are identical as one of specific embodiment one to three.
Specific embodiment 5: unlike one of present embodiment and specific embodiment one to four: the egative film 6 with
Cover plate 7 with a thickness of 0.03~1mm.Other steps and parameter are identical as one of specific embodiment one to four.
Using following embodiment verifying the utility model has the beneficial effects that
Embodiment 1: illustrate that the present embodiment, the present embodiment long fibre orientation enhancing thermoplastic polymer are multiple in conjunction with Fig. 1 and Fig. 2
The preparation method of condensation material sequentially includes the following steps:
Step 1: preparing polymeric matrix
Polymer particle and coupling agent are weighed, obtains the shaped polymer matrix of serialgram through hot pressing after being uniformly mixed；
The continuous sheet polymeric matrix with a thickness of 0.3mm；The mass ratio of the polymer particle and coupling agent is
1:0.03；The thermoplastic polymer is high density polyethylene (HDPE) (HDPE)；The coupling agent is that maleic anhydride grafted polyethylene is even
Join agent；
Step 2: fiber is mated formation and is wrapped up
Long fibre uniform parallel is mated formation on the surface of continuous sheet polymeric matrix, then by sheet polymer matrix with
Fibre length direction is that axis is rolled into tubular precast body；The mass ratio of the long fibre and continuous sheet polymeric matrix is 4:6；Institute
Stating long stapled length is 150mm；The long fibre is tossa；
The tubular precast body that this step obtains is made of polymeric matrix 1 and fiber 2, and polymeric matrix 1 is web-like, web-like
Polymeric matrix in adjacent volume layer constitute volume layer gap 4, be polymer matrix intracoelomic cavity 5 inside most interior volume layer；Fiber is flat
Row is inside the volume layer gap 4 that polymeric matrix length direction is set to the polymeric matrix 1 of web-like；
Step 3: composite material extrusion moulding
By the fiber end of tubular precast body towards the feed inlet of extruder and to extruder feeding, then squeezed out,
Long fibre orientation enhancing thermoplastic polymer composite material is obtained after mold mouth cooling and shaping；
The processing temperature section of extruder when being squeezed out is 140 DEG C~175 DEG C；
Mass percent shared by fiber in long fibre orientation enhancing thermoplastic polymer composite material manufactured in the present embodiment
It is 40%, the impact strength of the long fibre orientation enhancing thermoplastic polymer composite material of preparation is 17.8 KJ/m2, bending is by force
Degree is 55.3 MPa, and tensile strength is 60.5 MPa.
Embodiment 2:
Illustrate the present embodiment, the preparation of the present embodiment long fibre orientation enhancing thermoplastic polymer composite material in conjunction with Fig. 3
Method sequentially includes the following steps:
Step 1: preparing polymeric matrix
Polymer particle and coupling agent are weighed, obtains continuous sheet polymeric matrix through hot pressing after being uniformly mixed；
The continuous sheet polymeric matrix with a thickness of 0.06mm；The mass ratio of the polymer particle and coupling agent is
1:0.04；The thermoplastic polymer is high density polyethylene (HDPE) (HDPE)；The coupling agent is that maleic anhydride grafted polyethylene is even
Join agent；
Step 2: fiber is mated formation and is wrapped up
Long fibre uniform parallel is mated formation on the surface of continuous sheet polymeric matrix, then by sheet polymer matrix with
Fibre length direction is that axis is folded into tabs shape precast body；The mass ratio of the long fibre and continuous sheet polymeric matrix is 3:
7；The long stapled length is 100mm；The long fibre is bamboo fibre；
The tubular precast body that this step obtains is made of polymeric matrix 1 and fiber 2, and polymeric matrix 1 is tabs shape, folding
The polymeric matrix 1 of sheet is made of egative film 6 and cover plate 7；Cover plate 7 overlays on egative film 6, one of side of cover plate 7 with
One of side of egative film 6 is affixed；Fiber 2 is parallel to the polymer matrix that 1 length direction of polymeric matrix is set to tabs shape
Between the egative film 6 and cover plate 7 of body；
Step 3: composite material extrusion moulding
By the long fibre end of tabs shape precast body towards the feed inlet of extruder and to extruder feeding, then squeezed
Out, long fibre orientation enhancing thermoplastic polymer composite material is obtained after mold mouth cooling and shaping；It is described to squeeze when being squeezed out
The processing temperature of machine is 140 DEG C~175 DEG C out；
Mass percent shared by fiber in long fibre orientation enhancing thermoplastic polymer composite material manufactured in the present embodiment
It is 30%, the impact strength of the long fibre orientation enhancing thermoplastic polymer composite material of preparation is 18.1 KJ/m2, bending is by force
Degree is 48.2 MPa, tensile strength 52.7MPa.
Embodiment 3
Illustrate the present embodiment, the preparation of the present embodiment long fibre orientation enhancing thermoplastic polymer composite material in conjunction with Fig. 4
Method sequentially includes the following steps:
Step 1: preparing polymeric matrix
Polymer particle and coupling agent are weighed, obtains continuous sheet polymeric matrix through hot pressing after being uniformly mixed；
The continuous sheet polymeric matrix with a thickness of 0.05mm；The mass ratio of the polymer particle and coupling agent is
1:0.06；The thermoplastic polymer is polypropylene；The coupling agent is maleic anhydride inoculated polypropylene coupling agent；
Step 2: fiber is mated formation and is wrapped up
Long fibre uniform parallel is mated formation on the surface of continuous sheet polymeric matrix, then by sheet polymer matrix with
Fibre length direction is that axis folds slabbing precast body；The mass ratio of the long fibre and continuous sheet polymeric matrix is 5:5；
The long stapled length is 500mm；The long fibre is sisal fiber；
The tubular precast body that this step obtains is made of polymeric matrix 1 and fiber 2, and polymeric matrix 1 is tabs shape, folding
The polymeric matrix 1 of sheet is made of egative film 6 and cover plate 7；Cover plate 7 overlays on egative film 6, one of side of cover plate 7 with
One of side of egative film 6 is affixed；Fiber 2 is parallel to the polymer matrix that 1 length direction of polymeric matrix is set to tabs shape
Between the egative film 6 and cover plate 7 of body；
Step 3: composite material extrusion moulding
By the long fibre end of tabs shape precast body towards the feed inlet of extruder and to extruder feeding, then squeezed
Out, long fibre orientation enhancing thermoplastic polymer composite material is obtained after mold mouth cooling and shaping；It is described to squeeze when being squeezed out
The processing temperature of machine is 145 DEG C~185 DEG C out；
Mass percent shared by fiber in long fibre orientation enhancing thermoplastic polymer composite material manufactured in the present embodiment
It is 50%, the impact strength of the long fibre orientation enhancing thermoplastic polymer composite material of preparation is 16.2KJ/m2, bending is by force
Degree is 65.6MPa, tensile strength 73.4MPa.
Claims (5)
1. a kind of fiber alignment enhances thermoplastic polymer composite material precast body, it is characterised in that: the composite preform
It is made of polymeric matrix (1) and fiber (2)；
The polymeric matrix (1) is web-like or tabs shape；Adjacent volume layer constitutes volume in the polymeric matrix (1) of the web-like
Lamellar spacing (4), most interior volume layer inside is polymer matrix intracoelomic cavity (5)；The polymeric matrix (1) of the tabs shape is by egative film
(6) it is constituted with cover plate (7)；Cover plate (7) overlays on egative film (6), and the one of side and egative film (6) of cover plate (7) are wherein
One side is affixed；
The fiber (2) is parallel to the volume layer gap that polymeric matrix (1) length direction is set to the polymeric matrix (1) of web-like
(4) between the egative film (6) and cover plate (7) of the polymeric matrix of internal, polymer matrix intracoelomic cavity (5) inside or tabs shape；
The fiber is long fibre or continuous fiber.
2. fiber alignment according to claim 1 enhances thermoplastic polymer composite material precast body, it is characterised in that: institute
Stating polymeric matrix is continuous sheet polymer or non-woven fabrics.
3. fiber alignment according to claim 1 enhances thermoplastic polymer composite material precast body, it is characterised in that: institute
The mass ratio for stating polymeric matrix (1) and fiber (2) is 1:(0.11~9).
4. fiber alignment according to claim 1 enhances thermoplastic polymer composite material precast body, it is characterised in that: institute
Stating long stapled length is 10~1000mm.
5. fiber alignment according to claim 1 enhances thermoplastic polymer composite material precast body, it is characterised in that: institute
Egative film (6) are stated with cover plate (7) with a thickness of 0.03~1mm.
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| CN201820952530.XU CN208430073U (en) | 2018-06-20 | 2018-06-20 | Fiber alignment enhances thermoplastic polymer composite material precast body |
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| CN201820952530.XU CN208430073U (en) | 2018-06-20 | 2018-06-20 | Fiber alignment enhances thermoplastic polymer composite material precast body |
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