CN105924777A - Long fiber reinforced thermoplastic composite material and application thereof - Google Patents
Long fiber reinforced thermoplastic composite material and application thereof Download PDFInfo
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- CN105924777A CN105924777A CN201610351371.3A CN201610351371A CN105924777A CN 105924777 A CN105924777 A CN 105924777A CN 201610351371 A CN201610351371 A CN 201610351371A CN 105924777 A CN105924777 A CN 105924777A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/14—Copolymers of propene
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention relates to a long fiber reinforced thermoplastic composite material and application thereof and belongs to the technical field of research, development, production and application of novel environmentally friendly materials. The composite material contains homopolymerized PP, copolymerized PP, glass fiber and the like, has the characteristics of low density, high strength and the like, can replace traditional metal components and high-construction-cost modified engineering plastics, can effectively reduce component weight reduced (reduced by 40% or above on the original base) while ensuring component performance, can well achieve various goals of energy saving and automotive light-weighting, meanwhile can be recycled and is an environmentally friendly product. The application of the long fiber reinforced thermoplastic composite material in passenger vehicle structure components fills the application blank of domestic G-LFT-D in the passenger vehicle structure components, the quality of passenger vehicles can be effectively improved, pollution is reduced, the weights of the passenger vehicles are reduced, and accordingly fuel consumption is reduced.
Description
Technical field
The present invention relates to a kind of composite and application thereof, particularly relate to a kind of long fiber reinforced thermoplastic composites and answer
With, belong to Novel environment-friendlymaterial material research and development, production, applied technical field.
Background technology
G-LFT-D is mainly used in automobile structure and half hitch component, passenger car front-end bracket, instrumental panel skeleton, seat America and Europe
The structural members such as chair skeleton, rear lifting door, the half hitch component such as spare tyre cabin, spare tyre case lid, end backplate uses G-LFT-D the most in a large number
Molding；Usage amount at America and Europe since two thousand G-LFT-D rises year by year, 2015, and G-LFT-D usage amount is 55
Ten thousand tons, account for the 70% of whole thermoplastic composite usage amount.
In China, G-LFT-D enters later, and beginning industrial applications from 2010, early stage is mainly used in coach air conditioner
Cover, begins to use in recent years on passenger vehicle bottom backplate, and total usage amount is little, and within 2015, the passenger car consumption whole year is less than 2000
Ton；Use on passenger car structural member still belongs to blank.
Summary of the invention
The technical problem to be solved is to overcome the defect of prior art to provide a kind of long fiber reinforcement thermoplastic composite material
Material, this composite has the advantages such as proportion is little, intensity is big.Additionally, the present invention further provides this long fiber reinforcement thermoplastic
The application of property composite.
Of the present invention technical problem is that is realized by techniques below scheme.
A kind of long fiber reinforced thermoplastic composites, it is 60 by percentage by weight～the molten mixture of 80% and weight hundred
Proportion by subtraction be 20～40% the glass fibre of equal length be prepared from.
Further, above-mentioned long fiber reinforced thermoplastic composites, containing weight ratio in described molten mixture is 1～5:1
Homopolymerization PP, copolymerization PP；Account for homopolymerization PP and copolymerization PP gross weight 0.2～0.5% even containing HY-101 model Aluminate
The 24# white oil of connection agent；With the gross weight of homopolymerization PP, copolymerization PP than be 10～20:2～8:3～the mEPDM of 10:100, POE,
PP-g-MAH；Account for homopolymerization PP and copolymerization PP gross weight 1%～5% by toughener SY-PP, dispersant 200 mesh EBS,
UV absorbent UV326 or the mixed carrier of GW-944, antioxidant DLTP composition.
The weight ratio of above-mentioned long fiber reinforced thermoplastic composites, described HY-101 model titanate coupling agent and 24# white oil
For 1:5；Toughener SY-PP, dispersant 200 mesh EBS, UV absorbent UV326 or GW-944 in described mixed carrier,
The weight ratio of antioxidant DLTP is 2:1:1:1.
Above-mentioned long fiber reinforced thermoplastic composites, a length of 25.4mm of the glass fibre of described equal length, by 48
The continuous glass fibre fixed length cutting of EW758-2400 forms.
A kind of method preparing above-mentioned long fiber reinforced thermoplastic composites, comprises the steps:
(1) homopolymerization PP and the weight ratio of copolymerization PP are 1～5:1 to mix in mixed at high speed still, be subsequently adding homopolymerization PP with
Copolymerization PP gross weight 0.2～the 24# white oil containing HY-101 model aluminate coupling agent of 0.5%, described HY-101 model titanium
Acid esters coupling agent is 1:5 with the weight ratio of 24# white oil, PP is carried out blending and modifying, obtains a blending and modifying PP, standby；
(2) by a blending and modifying PP:mEPDM:POE:PP-g-MAH by weight 100:10-20:2-8:3-10's
Ratio mix homogeneously, obtains mixture, standby；
(3) in step (2), the mixture of gained adds homopolymerization PP and copolymerization P gross weight 1%～5% by toughener
SY-PP, dispersant 200 mesh EBS, UV absorbent UV326 or the mixing of GW-944, antioxidant DLTP composition
Carrier, toughener SY-PP, dispersant 200 mesh EBS, UV absorbent UV326 or GW-944 in described mixed carrier,
The weight ratio of antioxidant DLTP is 2:1:1:1, through high-speed stirred mix homogeneously, obtains secondary blending and modifying PP, standby；
(4) one-level double screw extruder sets mixture output as the 60～80% of final products weight, the temperature of each bringing-up section
Degree controls at 200 DEG C～230 DEG C, and step (3) gained secondary blending and modifying PP melts through one-level double screw extruder,
Molten mixture, standby；
(5) automatic cutting equipment sets glass fibre output as the 20～40% of final products weight, by 48
The continuous fiber of EW758-2400 to automatic cutting equipment, carries out fixed length cutting to it by conveyance conduit, a length of
25.4mm, obtains the glass fibre of equal length, standby；
(6) drop to the glass fibre of step (5) gained equal length, on the molten mixture of step (4) gained, pass through
The glass fibre of molten mixture and equal length is carried out mixture by two grades of double screw extruders, regulation temperature be 200 DEG C～230 DEG C and
Rotating speed 150r/min, on the premise of the glass fibre infiltration completely ensureing equal length, reduces the rotating speed of double screw extruder extremely
120r/min, reduces the damage of the length to glass fibre；
(7) material extruded by two-stage double screw extruder, is described long fiber reinforced thermoplastic composites.
The application in preparing passenger car structural elements of the above-mentioned long fiber reinforced thermoplastic composites, such as, apply in preparation
The passenger car structural members such as passenger car front-end bracket, instrumental panel skeleton, chair framework or the half hitch component such as spare tyre cabin, end backplate etc..
Long fiber reinforced thermoplastic composites of the present invention, its material used is in prior art and can directly obtain
Material, e.g., homopolymerization PP is HOPP, and copolymerization PP is COPP, and mEPDM is polymerization catalyzed by metallocene institute
The ethylene propylene diene rubber obtained, POE is the vistanex of 20% octene or is polyolefin elastomer, and PP-g-MAH is polypropylene
With maleic anhydride graft copolymer, EBS is N.N '-1, double 18 (carbon) amide of 2-second diyl, and UV326 is 2'-(2'-hydroxyl
-3'-the tert-butyl group-5'-aminomethyl phenyl)-5-chlorobenzotriazole, GW-944 is poly-{ [6-[(1,1,3,3-tetramethyl butyl) amino]]-1,3,5-
Triazine-2,4-[(2,2,6,6 ,-tetramethyl-4-piperidyl) imino group]-1,6-oneself two support [(2,2,6,6-tetramethyl-4-piperidyl) imino group],
DLTP is the double lauryls of thio-2 acid etc..
Long fiber reinforced thermoplastic composites of the present invention is obtained by specific material proportion and specific preparation technology,
There is the characteristics such as density is low, intensity is big, at passenger car structural members such as passenger car front-end bracket, instrumental panel skeleton, chair frameworks
Use with on the half hitch component product such as spare tyre cabin, end backplate, traditional metalwork and the modified engineering involved great expense can be replaced
Working of plastics, can effectively alleviate pts wt (reducing by more than 40% on the basis of former) while ensureing part performance, can
Preferably realize energy-conservation and automotive light weight technology the objectives, the simultaneously recyclable recycling of these goods, for environmentally friendly machine.This
Long fiber reinforced thermoplastic composites described in invention has filled up domestic G-LFT-D riding in the application of passenger car structural member
The application of bassinet structure parts is blank, can effectively promote passenger car quality, reduces and pollutes, and reduces passenger car weight thus reduces
Oil consumption.
Accompanying drawing explanation
Fig. 1 long fiber reinforced thermoplastic composites of the present invention preparation flow figure
Detailed description of the invention
Below by detailed description of the invention, the present invention is described in further detail, but is only intended to help and understands the present invention, make
Professional and technical personnel in the field are capable of or use the present invention, and the present invention does not constitute any restriction.
The preparation of embodiment 1 long fiber reinforced thermoplastic composites of the present invention
Composition:
A kind of long fiber reinforced thermoplastic composites, it is by the molten mixture that percentage by weight is 70% and percentage by weight
It is that the glass fibre of the equal length of 30% is prepared from；Containing the homopolymerization PP of 30kg, 10kg copolymerization in described molten mixture
PP, 0.12kg contain the 24# white oil of HY-101 model aluminate coupling agent, 6kgmEPDM, 2kgPOE,
2.4kgPP-g-MAH, 1.2kg by toughener SY-PP, dispersant 200 mesh EBS, UV absorbent UV326, anti-
The mixed carrier of oxidant DLTP composition；Described HY-101 model titanate coupling agent weight is 0.02kg, 24# white oil
Weight is 0.1kg；In described mixed carrier toughener SY-PP weight be 0.48kg, dispersant 200 mesh EBS weight be 0.24kg,
UV absorbent UV326 weight is 0.24kg, antioxidant DLTP weight is 0.24kg；The glass fibers of described equal length
The a length of 25.4mm of dimension, is formed by the continuous glass fibre fixed length cutting of 48 EW758-2400.
Preparation method, comprises the steps:
(1) homopolymerization PP mixes in mixed at high speed still with copolymerization PP, is subsequently adding containing HY-101 model Aluminate coupling
The 24# white oil of agent, carries out blending and modifying to PP, obtains a blending and modifying PP, standby；
(2) by PP, mEPDM, POE, PP-g-MAH ratio mix homogeneously, mixture is obtained, standby；
(3) mixture of gained adds by toughener SY-PP, dispersant 200 mesh EBS, ultraviolet in step (2)
Light absorbers UV326, antioxidant DLTP composition mixed carrier, through high-speed stirred mix homogeneously, obtain secondary be blended change
Property PP, standby；
(4) one-level double screw extruder sets mixture output as the 70% of final products weight, the temperature control of each bringing-up section
System is at 200 DEG C～230 DEG C, and step (3) gained secondary blending and modifying PP melts through one-level double screw extruder, obtains melted
Mixture, standby；
(5) automatic cutting equipment sets glass fibre output as the 30% of final products weight, by 48 EW758-2400
Continuous fiber by conveyance conduit to automatic cutting equipment, it is carried out fixed length cutting, a length of 25.4mm, obtains isometric
The glass fibre of degree, standby；
(6) drop to the glass fibre of step (5) gained equal length, on the molten mixture of step (4) gained, pass through
The glass fibre of molten mixture and equal length is carried out mixture by two grades of double screw extruders, regulation temperature be 200 DEG C～230 DEG C and
Rotating speed 150r/min, on the premise of the glass fibre infiltration completely ensureing equal length, reduces the rotating speed of double screw extruder extremely
120r/min, reduces the damage of the length to glass fibre；
(7) material extruded by two-stage double screw extruder, is described long fiber reinforced thermoplastic composites.
The preparation of embodiment 2 long fiber reinforced thermoplastic composites of the present invention
Composition:
A kind of long fiber reinforced thermoplastic composites, it is by the molten mixture that percentage by weight is 60% and percentage by weight
It is that the glass fibre of the equal length of 40% is prepared from；Containing the homopolymerization PP of 10kg, 10kg copolymerization in described molten mixture
PP, 0.04kg contain the 24# white oil of HY-101 model aluminate coupling agent, 4kgmEPDM, 1.6kgPOE,
2kgPP-g-MAH, 0.2kg by toughener SY-PP, dispersant 200 mesh EBS, UV absorbent GW-944, anti-
The mixed carrier of oxidant DLTP composition；Described HY-101 model titanate coupling agent weight is 0.006kg, 24# white oil
Weight is 0.034kg；In described mixed carrier toughener SY-PP weight be 0.08kg, dispersant 200 mesh EBS weight be
0.04kg, UV absorbent GW-944 weight are 0.04kg, antioxidant DLTP weight is 0.04kg；Described equal length
The a length of 25.4mm of glass fibre, the continuous glass fibre fixed length cutting of 48 EW758-2400 form.
Preparation method, comprises the steps:
(1) homopolymerization PP mixes in mixed at high speed still with copolymerization PP, is subsequently adding containing HY-101 model Aluminate coupling
The 24# white oil of agent, carries out blending and modifying to PP, obtains a blending and modifying PP, standby；
(2) by PP, mEPDM, POE, PP-g-MAH ratio mix homogeneously, mixture is obtained, standby；
(3) mixture of gained adds by toughener SY-PP, dispersant 200 mesh EBS, ultraviolet in step (2)
Light absorbers GW-944, antioxidant DLTP composition mixed carrier, through high-speed stirred mix homogeneously, obtain secondary be blended change
Property PP, standby；
(4) one-level double screw extruder sets mixture output as the 60% of final products weight, the temperature control of each bringing-up section
System is at 200 DEG C～230 DEG C, and step (3) gained secondary blending and modifying PP melts through one-level double screw extruder, obtains melted
Mixture, standby；
(5) automatic cutting equipment sets glass fibre output as the 40% of final products weight, by 48 EW758-2400
Continuous fiber by conveyance conduit to automatic cutting equipment, it is carried out fixed length cutting, a length of 25.4mm, obtains isometric
The glass fibre of degree, standby；
(6) drop to the glass fibre of step (5) gained equal length, on the molten mixture of step (4) gained, pass through
The glass fibre of molten mixture and equal length is carried out mixture by two grades of double screw extruders, regulation temperature be 200 DEG C～230 DEG C and
Rotating speed 150r/min, on the premise of the glass fibre infiltration completely ensureing equal length, reduces the rotating speed of double screw extruder extremely
120r/min, reduces the damage of the length to glass fibre；
(7) material extruded by two-stage double screw extruder, is described long fiber reinforced thermoplastic composites.
The preparation of embodiment 3 long fiber reinforced thermoplastic composites of the present invention
Composition:
A kind of long fiber reinforced thermoplastic composites, it is by the molten mixture that percentage by weight is 80% and percentage by weight
It is that the glass fibre of the equal length of 20% is prepared from；Containing the homopolymerization PP of 50kg, 10kg copolymerization in described molten mixture
PP, 0.3kg contain the 24# white oil of HY-101 model aluminate coupling agent, 12kgmEPDM, 4.8kgPOE,
6kgPP-g-MAH, 3kg by toughener SY-PP, dispersant 200 mesh EBS, UV absorbent UV326, antioxygen
The mixed carrier of agent DLTP composition；Described HY-101 model titanate coupling agent weight is the weight of 0.05kg, 24# white oil
Amount is 0.25kg；In described mixed carrier toughener SY-PP weight be 1.2kg, dispersant 200 mesh EBS weight be 0.6kg,
UV absorbent UV326 weight is 0.6kg, antioxidant DLTP weight is 0.6kg；The glass fibre of described equal length
A length of 25.4mm, the continuous glass fibre fixed length cutting of 48 EW758-2400 form.
Preparation method, comprises the steps:
(1) homopolymerization PP mixes in mixed at high speed still with copolymerization PP, is subsequently adding containing HY-101 model Aluminate coupling
The 24# white oil of agent, carries out blending and modifying to PP, obtains a blending and modifying PP, standby；
(2) by PP, mEPDM, POE, PP-g-MAH ratio mix homogeneously, mixture is obtained, standby；
(3) mixture of gained adds by toughener SY-PP, dispersant 200 mesh EBS, ultraviolet in step (2)
Light absorbers UV326, antioxidant DLTP composition mixed carrier, through high-speed stirred mix homogeneously, obtain secondary be blended change
Property PP, standby；
(4) one-level double screw extruder sets mixture output as the 60% of final products weight, the temperature control of each bringing-up section
System is at 200 DEG C～230 DEG C, and step (3) gained secondary blending and modifying PP melts through one-level double screw extruder, obtains melted
Mixture, standby；
(5) automatic cutting equipment sets glass fibre output as the 40% of final products weight, by 48 EW758-2400
Continuous fiber by conveyance conduit to automatic cutting equipment, it is carried out fixed length cutting, a length of 25.4mm, obtains isometric
The glass fibre of degree, standby；
(6) drop to the glass fibre of step (5) gained equal length, on the molten mixture of step (4) gained, pass through
The glass fibre of molten mixture and equal length is carried out mixture by two grades of double screw extruders, regulation temperature be 200 DEG C～230 DEG C and
Rotating speed 150r/min, on the premise of the glass fibre infiltration completely ensureing equal length, reduces the rotating speed of double screw extruder extremely
120r/min, reduces the damage of the length to glass fibre；
(7) material extruded by two-stage double screw extruder, is described long fiber reinforced thermoplastic composites.
The long fiber reinforced thermoplastic composites that embodiment 4 uses the embodiment of the present invention 1 to prepare prepares back door interior lining panel
(1) according to technological requirement, the material extruding two-stage double screw extruder carries out constant length cut-to-measure and breaks, i.e. according to product
The weight of product, is input to automatic cutting system, and equipment automatic cut-to-length quantitatively cuts off, defeated by 160-180 DEG C of transfer passage of insulation
Deliver to suitable position, utilize mechanical hand to be taken off from insulation conveyer belt by material, be placed in mould；
(2) stone terminates the descending compacting of rear press and pressurizes；
(3) pressurize, when reach regulation force value 16000KN " after carry out heat-insulation pressure keeping 55s；
(4) product stripping, after press die sinking, looses core and returns, ejecting product；
(5) take product, after product completely disengages from mould, use mechanical hand or manually product taken out from mould, putting
Put in frock；
(6) post processing, polishes off product overlap, forbids the scuffing product that collides with, and product edge also must not have sawtooth etc. bad
Phenomenon；
(7) product surface is processed, eliminate releasing agent and the defect of product surface；
(8)；Carry out process of spraying paint, including priming paint, middle painting, finish paint, varnish etc.；
(9) back door interior lining panel is obtained.
Test case 1 long fiber reinforced thermoplastic composites of the present invention performance test
According to GB1463, GB/T1447-2005, GB/T1447-2005, GB/T1449-2005, GB/T1449-2005,
In GB/T1451-2005, GB/T2411-2008, GB/T1633-2000, GB/T1462-2005, GB1634, JIS K6911
Regulation, to the long fiber reinforced thermoplastic composites prepared by the embodiment of the present invention 1 with tradition LFT-D carried out performance
Test, is shown in Table 1.
Table 1 material property contrast table
As seen from the results in Table 1, long fiber reinforced thermoplastic composites of the present invention with tradition LFT-D material compared with,
Proportion substantially reduces, hot strength, stretch modulus, bending strength, bending modulus, unnotched impact strength, case hardness
(shore) significantly improves, and can replace traditional metalwork and the modified engineered plastic part involved great expense, and is ensureing part
Pts wt (reducing by more than 40% on the basis of former) can be effectively alleviated while energy, energy-conservation and automobile can be preferably realized
Light-weighted the objectives, the simultaneously recyclable recycling of these goods, for environmentally friendly machine.
Below it is only the preferred embodiment of the present invention, not in order to limit the present invention, to those skilled in the art,
Under the premise without departing from the principles of the invention, it is also possible to some improvement of making, retouching, equivalent, should be included in this
Within the protection domain of invention.
Claims (7)
1. a long fiber reinforced thermoplastic composites, it is characterised in that its by percentage by weight be 60～80% melted mixed
Compound and percentage by weight be 20～40% the glass fibre of equal length be prepared from.
Long fiber reinforced thermoplastic composites the most according to claim 1, it is characterised in that in described molten mixture
Containing the homopolymerization PP that weight ratio is 1～5:1, copolymerization PP；Account for homopolymerization PP and copolymerization PP gross weight 0.2～0.5% containing HY-101
The 24# white oil of model aluminate coupling agent；It is 10～20:2～8:3～10:100 with the gross weight ratio of homopolymerization PP, copolymerization PP
mEPDM、POE、PP-g-MAH；Account for homopolymerization PP and copolymerization PP gross weight 1%～5% by toughener SY-PP, dispersion
Agent 200 mesh EBS, UV absorbent UV326 or GW-944, the mixed carrier of antioxidant DLTP composition.
Long fiber reinforced thermoplastic composites the most according to claim 2, it is characterised in that described HY-101 model
Titanate coupling agent is 1:5 with the weight ratio of 24# white oil；Toughener SY-PP in described mixed carrier, dispersant 200 mesh EBS,
The weight ratio of UV absorbent UV326 or GW-944, antioxidant DLTP is 2:1:1:1.
Long fiber reinforced thermoplastic composites the most according to claim 3, it is characterised in that the glass of described equal length
The a length of 25.4mm of fiber, is formed by the continuous glass fibre fixed length cutting of 48 EW758-2400.
5. the method preparing long fiber reinforced thermoplastic composites as claimed in claim 4, it is characterised in that include
Following steps:
(1) homopolymerization PP and the weight ratio of copolymerization PP are 1～5:1 to mix in mixed at high speed still, are subsequently adding homopolymerization PP together
Poly-PP gross weight 0.2～the 24# white oil containing HY-101 model aluminate coupling agent of 0.5%, described HY-101 model metatitanic acid
Ester coupling agent is 1:5 with the weight ratio of 24# white oil, PP is carried out blending and modifying, obtains a blending and modifying PP, standby；
(2) by the ratio of a blending and modifying PP:mEPDM:POE:PP-g-MAH 100:10-20:2-8:3-10 by weight
Example mix homogeneously, obtains mixture, standby；
(3) in step (2), the mixture of gained adds homopolymerization PP and copolymerization P gross weight 1%～5% by toughener
SY-PP, dispersant 200 mesh EBS, UV absorbent UV326 or the mixing of GW-944, antioxidant DLTP composition
Carrier, toughener SY-PP, dispersant 200 mesh EBS, UV absorbent UV326 or GW-944 in described mixed carrier,
The weight ratio of antioxidant DLTP is 2:1:1:1, through high-speed stirred mix homogeneously, obtains secondary blending and modifying PP, standby；
(4) one-level double screw extruder sets mixture output as the 60～80% of final products weight, the temperature of each bringing-up section
Controlling at 200 DEG C～230 DEG C, step (3) gained secondary blending and modifying PP melts through one-level double screw extruder, obtains melted
Mixture, standby；
(5) automatic cutting equipment sets glass fibre output as the 20～40% of final products weight, by 48
The continuous glass fibre of EW758-2400 to automatic cutting equipment, carries out fixed length cutting to it by conveyance conduit, a length of
25.4mm, obtains the glass fibre of equal length, standby；
(6) glass fibre of step (5) gained equal length is dropped on the molten mixture of step (4) gained, by two
The glass fibre of molten mixture and equal length is carried out mixture by level double screw extruder, and regulation temperature is 200 DEG C～230 DEG C and turns
Speed 150r/min, on the premise of the glass fibre infiltration completely ensureing equal length, reduces the rotating speed of double screw extruder extremely
120r/min, reduces the damage of the length to glass fibre；
(7) material extruded by two-stage double screw extruder, is described long fiber reinforced thermoplastic composites.
6. the long fiber reinforced thermoplastic composites described in any one of Claims 1-4 is in preparing passenger car structural elements
Application.
Application the most according to claim 6, it is characterised in that this application is for preparing passenger car front-end bracket, instrumental panel bone
The passenger car structural member such as frame, chair framework or the half hitch component such as spare tyre cabin, end backplate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107189217A (en) * | 2017-06-30 | 2017-09-22 | 通城县绿之源塑胶制品厂 | A kind of PP composite material and preparation method thereof |
| WO2020119014A1 (en) * | 2018-12-10 | 2020-06-18 | 江苏华曼复合材料科技有限公司 | Vehicle underbody shield made from lft panel material and manufacturing method therefor |
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| CN102731905A (en) * | 2012-05-22 | 2012-10-17 | 宁波泛龙塑料新材料有限公司 | Long glass fiber reinforced modified polypropylene and preparation method thereof |
| CN104997420A (en) * | 2015-07-27 | 2015-10-28 | 汤阴县薛氏机械装备有限公司 | Self-service food baker |
| CN105482242A (en) * | 2015-12-30 | 2016-04-13 | 上海普利特复合材料股份有限公司 | High-strength and high-toughness long glass fiber reinforced polypropylene composite material and preparation method thereof |
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| CN102532707A (en) * | 2011-12-26 | 2012-07-04 | 上海普利特复合材料股份有限公司 | Low-VOC (volatile organic compound) long glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN102731905A (en) * | 2012-05-22 | 2012-10-17 | 宁波泛龙塑料新材料有限公司 | Long glass fiber reinforced modified polypropylene and preparation method thereof |
| CN104997420A (en) * | 2015-07-27 | 2015-10-28 | 汤阴县薛氏机械装备有限公司 | Self-service food baker |
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| WO2020119014A1 (en) * | 2018-12-10 | 2020-06-18 | 江苏华曼复合材料科技有限公司 | Vehicle underbody shield made from lft panel material and manufacturing method therefor |
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