CN109016556A - A kind of chopped strand enhancing thermoplastic resin plate and preparation method thereof - Google Patents
A kind of chopped strand enhancing thermoplastic resin plate and preparation method thereof Download PDFInfo
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- CN109016556A CN109016556A CN201810586522.2A CN201810586522A CN109016556A CN 109016556 A CN109016556 A CN 109016556A CN 201810586522 A CN201810586522 A CN 201810586522A CN 109016556 A CN109016556 A CN 109016556A
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- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 109
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims description 10
- 239000000835 fiber Substances 0.000 claims abstract description 57
- 239000011159 matrix material Substances 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 241000446313 Lamella Species 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 239000000088 plastic resin Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009331 sowing Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims description 2
- 239000004595 color masterbatch Substances 0.000 claims description 2
- -1 compatilizer Substances 0.000 claims description 2
- 239000007822 coupling agent Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims 1
- 238000000748 compression moulding Methods 0.000 abstract description 18
- 238000000465 moulding Methods 0.000 abstract description 6
- 239000011521 glass Substances 0.000 description 35
- 239000010410 layer Substances 0.000 description 32
- 238000005452 bending Methods 0.000 description 23
- 238000012360 testing method Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 238000005070 sampling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
- B29C70/14—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
- B29K2105/14—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles oriented
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The present invention provides a kind of chopped strands to enhance thermoplastic resin plate, chopped strand enhancing thermoplastic resin plate is vertically divided into n region along plate width direction, n >=2, chopped strand enhancing thermoplastic resin plate is made of at least 3 layers of chopped fibers and resin matrix, chopped strand is divided into two parts according to the difference in laying direction in chopped fibers, the laying direction of first part's chopped strand and plate width direction are perpendicular, the laying direction of second part chopped strand and first part's chopped strand form angle Θ, angle Θ in each region belongs to A:0-30 °, one of them in B:30-60 ° or C:60-90 ° of three ranges, range belonging to angle Θ is different between adjacent area, wherein, the range of angle Θ does not include 0 °.In chopped strand enhancing thermoplastic resin plate of the invention, the designability of the angle Θ of chopped strand length and chopped strand, while so that plate is had many advantages, such as outstanding compression molding, integrated molding, mechanical property with higher.
Description
Technical field
The present invention relates to technical field of polymer materials, enhance thermoplastic resin plate more particularly to a kind of chopped strand
And preparation method thereof.
Background technique
Reinforcing fiber is directly applied in the form of non-individual body, uncomfortable although significant mechanical property can be obtained
Integrated molding for complex components.For using the continuous fiber of multidirectional braiding, one side higher cost, another party
It is special that the dipping of fiber buckling caused by face weaves and thermoplastic resin not exclusively affects the final mechanics of product to a certain extent
Property；For using continuous fiber one-way tape to carry out laying, laying angle, the design of laminate structures, the interlayer knot between different layers
Resultant force is very big on the influence of the characteristic of plate, therefore the angle of laying, quantity and combination process are particularly important in laminating technology,
To sum up either it certainly will all will lead to the raising of product cost by increasing cost of labor or equipment investment, so to a certain degree
On limit the extensive use of continuous fiber reinforced thermoplastic resin composite material.The chopped strand enhancing occurred currently on the market
In composite board, has in the form of the thermoplastic resin of extrusion coats ready-made chopped mat, also has chopped fiber
Laminated form directly is carried out with the thermoplastic resin piece of extrusion, regardless of the fiber interweaving angle which kind of form is chopped cannot be into
The simple subregional design of row, the poor interface binding power caused between fiber and thermoplastic resin of the dipping effect of thermoplastic resin
It is weaker, dramatically affect the mechanical property and its stability of chopped strand reinforcing material.
Summary of the invention
The object of the present invention is to provide a kind of chopped strands to enhance thermoplastic resin plate, chopped strand length and short
Cut the designability that angle is overlapped between fiber, make plate have the advantages that outstanding compression molding, integrated molding it is same
When, mechanical property with higher.
Another object of the present invention is to provide a kind of preparation sides of above-mentioned chopped strand enhancing thermoplastic resin plate
Method.
The present invention is achieved by the following technical solutions:
A kind of chopped strand enhancing thermoplastic resin plate, chopped strand enhancing thermoplastic resin plate vertically divide along plate width direction
For a region, n >=2, chopped strand enhancing thermoplastic resin plate is made of at least 3 layers of chopped fibers and resin matrix, short
It cuts in fibrous layer chopped strand and two parts, the laying direction of first part's chopped strand and plate is divided into according to the difference in laying direction
Wide direction is perpendicular, and the laying direction of second part chopped strand and first part's chopped strand form angle Θ, each region
Interior angle Θ belongs to one of them in A:0-30 °, B:30-60 ° or C:60-90 ° three ranges, angle Θ between adjacent area
Affiliated range is different, wherein the range of angle Θ does not include 0 °.Angle Θ small region, perpendicular to plate width direction
Moldability is good；The mechanical property in angle Θ big region, all directions is good, but in the moldability perpendicular to plate width direction
It can be insufficient.In this way, the area in one block of chopped strand enhancing thermoplastic resin plate just with n different chopped strand angle Θ
Domain, each piece of region have the advantages that corresponding angle Θ, and the chopped strand for not needing to be fabricated separately n block difference angle Θ in this way increases
Then heat-flash plastic resin plate is attached by fastener, greatly simplify processing technology.
The plate width direction direction vertical for chopped strand enhancing thermoplastic resin plate region separator bar, with chopped fibre
Length, the numerical values recited of width of dimension enhancing thermoplastic resin plate are unrelated.Wherein, chopped strand enhances thermoplastic resin plate
The transition region that region separator bar both sides have a bit of chopped strand for belonging to different range angle Θ mutually to mix.
Preferably, the chopped fibers of chopped strand enhancing thermoplastic resin plate, by central core successively outward until most
Outer one layer, the length of interior one layer any chopped strand is less than the length of outer one layer any chopped strand or interior one layer is appointed
The length of a piece chopped strand is greater than the length of outer one layer any chopped strand, when the layer sum of chopped fibers is even number
When, central core is most interior two layers.By the way that the shortest chopped fibers of chopped strand length are arranged in plate surface, Ke Yiti
The mobility of high plate surface layer is molded figuration effect to improve；By the way that the longest chopped fibers of chopped strand length are arranged
In plate surface, the impact resistance and other mechanical properties of plate can be improved.
Preferably, the chopped fibers of chopped strand enhancing thermoplastic resin plate, by central core along two sides successively outward
Until outermost one layer, the distribution of lengths of the chopped strand of the identical layer of the number of plies is consistent, when the chopped fibers number of plies is even number, in
Central layer is most interior two layers.The identical layer of the number of plies is the layer symmetrical with plate median plane, and the chopped strand of these symmetrical layers is long
When degree distribution is consistent, the warpage that chopped strand enhances thermoplastic resin plate is low.
Preferably, in chopped strand enhancing thermoplastic resin plate, the chopped fibre in any layer chopped fibers
The length of dimension is identical.
Preferably, in chopped strand enhancing thermoplastic resin plate, angle Θ is numerical value, angle between adjacent area
Θ is different.When angle Θ is a numerical value rather than value range, chopped strand laying in plate has more regularity, can be with
Further increase compression molding property and mechanical property.
The length of the chopped strand is 3-60mm.
The chopped strand enhances thermoplastic resin plate, by weight percentage, chopped strand 20wt%-60wt%,
Resin matrix 40wt%-80wt%.
The chopped strand is selected from least one of carbon fiber, natural fiber, mineral fibres；The resin matrix
It is mixed selected from any one thermoplastic resin or a variety of thermoplastic resins with arbitrary proportion；It is also added in the resin matrix
At least one of coupling agent, compatilizer, antioxidant, lubricant, color masterbatch, filler.
The chopped strand enhancing thermoplastic resin plate thickness range is 2mm-20mm.
The preparation method of above-mentioned chopped strand enhancing thermoplastic resin plate, comprising the following steps:
A) resin matrix heating, which is extruded into after film drench, is layed onto the continuous fiber being unfolded in parallel, is formed to the upper and lower of continuous fiber
Its Composite is then obtained continuous fiber thermoplastic resin sheet by heating folder rod pressurization by cladding；
B) continuous fiber thermoplastic resin sheet is chopped to obtain the chopped strand enhancing thermoplastic resin of setting width, length
Rouge piece；
C) according to chopped strand length, the setting of angle, chopped strand enhancing thermoplastic resin sheet is broadcasted sowing on conveyer belt, it is short
Cut overlapped by set angle between fiber reinforced thermoplastic resin sheets and along transmission tape travel then at 190-220 DEG C into
Row thermal finalization obtains chopped strand enhancing thermoplastic resin sheet lamella until completing scheduled length；
D chopped strand length) is set with the preparation of A-C step, the chopped strand of angle enhances thermoplastic resin sheet lamella；
E) by setting stack chopped strand enhancing thermoplastic resin sheet lamella, carry out laminatedization, finally carry out it is crosscutting obtain it is short
Cut fiber-reinforced thermoplastic resin plate.
The invention has the following beneficial effects:
The present invention is by being divided into n parts of regions for chopped strand enhancing thermoplastic resin plate, in region or interregional chopped fibre
Angle Θ between dimension has designability, while the planning of fibre length has been carried out in symmetrical level, to improve plate
Compression molding property, the integrated Fast Modular compacting that complex parts may be implemented is standby, and can guarantee components key position
Mechanical property with higher；For the demand for cooperating actual product to develop, the lesser shape position in local strengthening position and the angle R
Realized by optimizing collocation to different angle Θ and fibre length, make plate moulding at components have both excellent mould
Molded property and mechanical property.
Detailed description of the invention
Fig. 1: the schematic shapes of components A；
Fig. 2: the schematic shapes of components A, length unit mm；
Fig. 3: the schematic shapes of components A, the length unit angle mm, R are 20mm.
Specific embodiment
Further illustrate that the present invention, following implementation are that the present invention is preferably implemented below by specific embodiment
Mode, but embodiments of the present invention are not limited by following embodiments.
The preparation method of embodiment 1-4 and comparative example 1-3 chopped strand enhancing thermoplastic resin plate:
Resin matrix heating, which is extruded into after film drench, to be layed onto the continuous fiber being unfolded in parallel, up and down packet of the formation to continuous fiber
It covers, is then pressurizeed by heating folder rod by its Composite, continuous fiber thermoplastic resin sheet；By continuous fiber thermoplastic resin
Sheet material is chopped to obtain the chopped strand enhancing thermoplastic resin sheet of setting width, length；According to chopped strand length, angle
Setting, chopped strand enhancing thermoplastic resin sheet is broadcasted sowing on conveyer belt, is pressed between chopped strand enhancing thermoplastic resin sheet
Set angle is overlapped and then carries out thermal finalization at 190-220 DEG C along transmission tape travel, until completing predetermined
Length, obtain chopped strand enhancing thermoplastic resin sheet lamella；Chopped strand length, angle are set according to above step preparation
The chopped strand of degree enhances thermoplastic resin sheet lamella；Chopped strand enhancing thermoplastic resin sheet lamella is stacked by setting, into
Row laminatedization, finally carrying out the crosscutting chopped strand that obtains enhances thermoplastic resin plate.
Each performance test methods:
(1) between fiber intertexture angle test method: using reflection-type optical microscope to board samples surface obtained into
Row observation, surface pattern are recorded by way of taking pictures, and are calculated using image-J software to interfibrous angle
Characterization；
(2) compression molding property: by chopped strand enhancing thermoplastic resin plate compression molding under the conditions of identical cavity depth
For components A, shape as illustrated in the accompanying drawings from 1 to 3, is formed for the product of compression molding by measurement with a thickness of former plate thickness
The angle R of product bending place afterwards, if closer to the angle R of design, compression molding property is better at the angle R of product edge after molding；
(3) notch impact strength: chopped strand enhancing thermoplastic resin plate is pressed and molded as components A, shape such as attached drawing
Shown in 1-3, with a thickness of former plate thickness, using GB/T 1843-2008 " measurement of plastics cantilever beam impact strength " standard, V-type
Notch takes 5 Duplicate Samples to be tested, and batten takes the direction for being parallel to region segmentation line, and final result is averaged；
(4) bending strength/bending modulus: chopped strand enhancing thermoplastic resin plate is pressed and molded as components A, shape is such as
Shown in attached drawing 1-3, with a thickness of former plate thickness, using GB/T1449-2005 " fibre reinforced plastics bending property test method "
Standard, test speed 2mm/min take 5 Duplicate Samples to be tested, and batten takes the direction for being parallel to region segmentation line, most terminates
Fruit is averaged.
After chopped strand enhancing thermoplastic resin plate is molded into components A, interception test notch impact strength, bending are strong
Degree, bending modulus batten direction be it is parallel with plate width direction, and embodiment 1-4 interception batten position be raw sheet material in
Heart position, batten interception position and direction are identical as embodiment 1-4's in comparative example 1-3.
Embodiment 1:
In the present embodiment, chopped strand, which enhances, has 6 layers of chopped fibers, the weight of glass chopped strands in thermoplastic resin plate
Amount percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate
Plate width is 1550mm, length 558.4mm, with a thickness of 3mm；Wherein chopped strand enhances thermoplastic resin plate along plate width direction
Vertically it is divided into 3 parts of regions by 1:1.8:1, from left to right, first part's glass chopped strands laying direction is vertical in every part of region
Angle Θ between plate width direction, second part glass chopped strands and first part's glass chopped strands is respectively distributed to 0-
Within the scope of 30 °, 60-90 °, 0-30 °, wherein the range of angle Θ does not include 0 °；The length of the glass chopped strands of each layer is successively
For 5mm/ 10mm/ 20mm/ 20mm/ 10mm/ 5mm.
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Embodiment 2:
In the present embodiment, chopped strand, which enhances thermoplastic resin plate, has 6 layers of chopped fibers, the weight of glass chopped strands
Percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate plate
Width is 1550mm, length 558.4mm, with a thickness of 3mm；Wherein chopped strand enhancing thermoplastic resin plate is pressed along plate width direction
1:1.8:1 is vertically divided into 3 parts of regions, from left to right, in every part of region first part's glass chopped strands laying direction perpendicular to
Plate width direction, angle Θ between second part glass chopped strands and first part's glass chopped strands is 15 °, 60-90 °,
15°；The length of the glass chopped strands of each layer is followed successively by 5mm/ 10mm/ 20mm/ 20mm/ 10mm/ 5mm.
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Embodiment 3:
In the present embodiment, chopped strand, which enhances thermoplastic resin plate, has 6 layers of chopped fibers, the weight of glass chopped strands
Percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate plate
Width is 1550mm, length 558.4mm, with a thickness of 3mm；Wherein chopped strand enhancing thermoplastic resin plate is pressed along plate width direction
1:1.8:1 is vertically divided into 3 parts of regions, from left to right, in every part of region first part's glass chopped strands laying direction perpendicular to
Plate width direction, the angle Θ between second part glass chopped strands and first part's glass chopped strands are respectively distributed to 0-
Within the scope of 30 °, 60-90 °, 0-30 °；The distribution of lengths of the glass chopped strands of each layer is followed successively by 4-5mm/9- 10mm/ 18-
20mm/ 18-20mm/ 9-10mm/ 4-5mm。
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Embodiment 4:
In the present embodiment, chopped strand, which enhances thermoplastic resin plate, has 6 layers of chopped fibers, the weight of glass chopped strands
Percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate plate
Width is 1550mm, length 558.4mm, with a thickness of 3mm；Wherein chopped strand enhancing thermoplastic resin plate is pressed along plate width direction
1:1.8:1 is vertically divided into 3 parts of regions, from left to right, in every part of region first part's glass chopped strands laying direction perpendicular to
Plate width direction, the angle Θ between second part glass chopped strands and first part's glass chopped strands are respectively distributed to 0-
Within the scope of 30 °, 60-90 °, 0-30 °, wherein the range of angle Θ does not include 0 °；The length of the glass chopped strands of each layer is successively
For 2mm/ 10mm/ 20mm/ 20mm/ 10mm/ 2mm.
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Comparative example 1:
In this comparative example, chopped strand, which enhances thermoplastic resin plate, has 6 layers of chopped fibers, the weight of glass chopped strands
Percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate plate
Width is 1550mm, length 558.4mm, with a thickness of 3mm；Wherein chopped strand enhancing thermoplastic resin plate is pressed along plate width direction
1:1.8:1 is vertically divided into 3 parts of regions, from left to right, in every part of region first part's glass chopped strands laying direction perpendicular to
Plate width direction, the angle Θ between second part glass chopped strands and first part's glass chopped strands are respectively distributed to 0-
Within the scope of 45 °, 45-90 °, 0-45 °, wherein the range of angle Θ does not include 0 °；The length of the glass chopped strands of each layer is successively
For 5mm/ 10mm/ 20mm/ 20mm/ 10mm/ 5mm.
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Comparative example 2:
In this comparative example, chopped strand, which enhances thermoplastic resin plate, has 6 layers of chopped fibers, the weight of glass chopped strands
Percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate plate
Width is 1550mm, length 558.4mm, with a thickness of 3mm；Region is not divided, first part's glass chopped strands laying direction is hung down
Directly the angle Θ between plate width direction, second part glass chopped strands and first part's glass chopped strands is distributed in 0-
Within the scope of 30 °, wherein the range of angle Θ does not include 0 °；The length of the glass chopped strands of each layer is followed successively by 5mm/ 10mm/
20mm/ 20mm/ 10mm/ 5mm。
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Comparative example 3:
In this comparative example, chopped strand, which enhances thermoplastic resin plate, has 6 layers of chopped fibers, the weight of glass chopped strands
Percentage is 50wt%, and the weight percent of PP matrix is 50wt%；Chopped strand enhances thermoplastic resin plate plate
Width is 1550mm, length 558.4mm, with a thickness of 3mm；Region is not divided, first part's glass chopped strands laying direction is hung down
Directly the angle Θ between plate width direction, second part glass chopped strands and first part's glass chopped strands is distributed in 60-
Within the scope of 90 °；The length of the glass chopped strands of each layer is followed successively by 5mm/ 10mm/ 20mm/ 20mm/ 10mm/ 5mm.
The chopped strand enhances thermoplastic resin plate, is molded into components A, sampling and testing its compression molding property, notch
Impact strength, bending strength, bending modulus, test result are as shown in table 1.
Table 1: each the performance test results of embodiment and comparative example
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Compression molding property (mm) | +3.5 | +2.5 | +3.5 | +2 | +4.5 | +3.5 | 4.5 |
| Notch impact strength, MPa | 115 | 115 | 110 | 95 | 110 | 105 | 115 |
| Bending strength, MPa | 210 | 210 | 200 | 185 | 205 | 195 | 210 |
| Bending modulus, GPa | 10.5 | 10.5 | 10 | 8.5 | 10 | 8.5 | 10.5 |
Can be seen that chopped strand of the invention from embodiment 1-4 enhances thermoplastic resin plate, according to the feature of components A,
Plate is divided into the region of 1:1.8:1, wherein the fibre length on both sides is shorter, and zone fiber intertexture angle is smaller to be more conducive to
Compression molding, the angle R is smaller, and the profile of molding is more three-dimensional；From embodiment 1/3 as can be seen that discovery chopped strand enhances thermoplasticity
When chopped strand length is fixed value in resin sheet lamella, better performances；From embodiment 1/4 as can be seen that chopped strand
Length is investigated, when chopped strand is less than 3mm, compression molding property is improved it is more obvious, but it is notch impact strength, curved
Qu Qiangdu, bending modulus have to be declined by a small margin.Although from comparative example 1 as can be seen that having divided region, the intertexture of fiber
Not within the scope of the invention, each performance cannot all reach requirement to angle；It can be seen that from comparative example 2-3 and do not divide region, nothing
Method obtains the advantages of two kinds of chopped strand intertexture angles simultaneously.
Claims (10)
1. a kind of chopped strand enhances thermoplastic resin plate, which is characterized in that chopped strand enhances thermoplastic resin plate edge
Plate width direction is vertically divided into n region, n >=2, chopped strand enhance thermoplastic resin plate by least 3 layers of chopped fibers and
Resin matrix is constituted, and chopped strand is divided into two parts according to the difference in laying direction in chopped fibers, and first part is chopped fine
The laying direction of dimension and plate width direction are perpendicular, and the laying direction of second part chopped strand is formed with first part's chopped strand
Angle Θ, the angle Θ in each region belong to one of them in A:0-30 °, B:30-60 ° or C:60-90 ° three ranges,
Range belonging to angle Θ is different between adjacent area, wherein the range of angle Θ does not include 0 °.
2. chopped strand according to claim 1 enhances thermoplastic resin plate, which is characterized in that chopped strand enhancing heat
The chopped fibers of plastic resin plate, by central core successively outward until outermost one layer, interior one layer any chopped strand
Length is less than the length of outer one layer any chopped strand or the length of interior one layer of any chopped strand is greater than outer one layer and appoints
The length of a piece chopped strand, when the layer sum of chopped fibers is even number, central core is most interior two layers.
3. chopped strand according to claim 2 enhances thermoplastic resin plate, which is characterized in that chopped strand enhancing heat
The chopped fibers of plastic resin plate, by central core along two sides successively outward until outermost one layer, the identical layer of the number of plies it is short
The distribution of lengths for cutting fiber is consistent, and when the chopped fibers number of plies is even number, central core is most interior two layers.
4. chopped strand according to claim 3 enhances thermoplastic resin plate, which is characterized in that the chopped strand
Enhance in thermoplastic resin plate, the length of the chopped strand in any layer chopped fibers is identical.
5. chopped strand according to claim 1 enhances thermoplastic resin plate, which is characterized in that the chopped strand
Enhance in thermoplastic resin plate, angle Θ is numerical value, and angle Θ is different between adjacent area.
6. chopped strand according to claim 4 enhances thermoplastic resin plate, which is characterized in that the chopped strand
Length be 3-60mm.
7. according to right want 5 described in chopped strand enhancing thermoplastic resin plate, which is characterized in that the chopped strand increases
Heat-flash plastic resin plate, by weight percentage, chopped strand 20wt%-60wt%, resin matrix 40wt%-80wt%.
8. chopped strand according to claim 7 enhances thermoplastic resin plate, which is characterized in that the chopped strand
Selected from least one of carbon fiber, natural fiber, mineral fibres；The resin matrix is selected from any one thermoplastic resin
Or a variety of thermoplastic resins are mixed with arbitrary proportion；In the resin matrix also added with coupling agent, compatilizer, antioxidant,
At least one of lubricant, color masterbatch, filler.
9. chopped strand according to claim 8 enhances thermoplastic resin plate, which is characterized in that the chopped strand
Enhancing thermoplastic resin plate thickness range is 2mm-20mm.
10. the preparation method of the described in any item chopped strand enhancing thermoplastic resin plates of claim 1-9, feature exist
In, comprising the following steps:
A) resin matrix heating, which is extruded into after film drench, is layed onto the continuous fiber being unfolded in parallel, is formed to the upper and lower of continuous fiber
Its Composite is then obtained continuous fiber thermoplastic resin sheet by heating folder rod pressurization by cladding；
B) continuous fiber thermoplastic resin sheet is chopped to obtain the chopped strand enhancing thermoplastic resin of setting width, length
Rouge piece；
C) according to chopped strand length, the setting of angle, chopped strand enhancing thermoplastic resin sheet is broadcasted sowing on conveyer belt, it is short
Cut overlapped by set angle between fiber reinforced thermoplastic resin sheets and along transmission tape travel then at 190-220 DEG C into
Row thermal finalization obtains chopped strand enhancing thermoplastic resin sheet lamella until completing scheduled length；
D chopped strand length) is set with the preparation of A-C step, the chopped strand of angle enhances thermoplastic resin sheet lamella；
E) by setting stack chopped strand enhancing thermoplastic resin sheet lamella, carry out laminatedization, finally carry out it is crosscutting obtain it is short
Cut fiber-reinforced thermoplastic resin plate.
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|---|---|---|---|---|
| CN1151935A (en) * | 1995-10-20 | 1997-06-18 | Ykk株式会社 | Process for producing molding sheet material fiber-reinforced modling sheet material produced by process and boxtoe of safety shoes made by use of material |
| CN105252842A (en) * | 2015-10-30 | 2016-01-20 | 安徽佳力奇航天碳纤维有限公司 | Carbon fiber flat structural member |
| JP2016180037A (en) * | 2015-03-24 | 2016-10-13 | 三菱レイヨン株式会社 | Carbon fiber-reinforced thermoplastic resin composite material, and molded body using the same |
| US20170173826A1 (en) * | 2015-12-21 | 2017-06-22 | Palo Alto Research Center Incorporated | Fiber reinforced thermoplastic sheets for thermoforming |
| CN106965860A (en) * | 2017-02-28 | 2017-07-21 | 江苏理工学院 | A kind of fiber hybrid composite automobile engine cover |
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2018
- 2018-06-08 CN CN201810586522.2A patent/CN109016556B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151935A (en) * | 1995-10-20 | 1997-06-18 | Ykk株式会社 | Process for producing molding sheet material fiber-reinforced modling sheet material produced by process and boxtoe of safety shoes made by use of material |
| JP2016180037A (en) * | 2015-03-24 | 2016-10-13 | 三菱レイヨン株式会社 | Carbon fiber-reinforced thermoplastic resin composite material, and molded body using the same |
| CN105252842A (en) * | 2015-10-30 | 2016-01-20 | 安徽佳力奇航天碳纤维有限公司 | Carbon fiber flat structural member |
| US20170173826A1 (en) * | 2015-12-21 | 2017-06-22 | Palo Alto Research Center Incorporated | Fiber reinforced thermoplastic sheets for thermoforming |
| CN106965860A (en) * | 2017-02-28 | 2017-07-21 | 江苏理工学院 | A kind of fiber hybrid composite automobile engine cover |
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| CN109016556B (en) | 2020-10-23 |
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