CN115071162A - Fiber-reinforced anti-collision beam and preparation process and application thereof - Google Patents
Fiber-reinforced anti-collision beam and preparation process and application thereof Download PDFInfo
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- CN115071162A CN115071162A CN202210696793.XA CN202210696793A CN115071162A CN 115071162 A CN115071162 A CN 115071162A CN 202210696793 A CN202210696793 A CN 202210696793A CN 115071162 A CN115071162 A CN 115071162A
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- 238000002360 preparation method Methods 0.000 title description 5
- 239000000835 fiber Substances 0.000 claims abstract description 61
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 44
- 239000002131 composite material Substances 0.000 claims abstract description 43
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 claims abstract description 35
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 25
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 13
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- 239000000463 material Substances 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
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- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 claims description 4
- 229920006245 ethylene-butyl acrylate Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
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- 239000003822 epoxy resin Substances 0.000 claims description 2
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 3
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- 238000010998 test method Methods 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
-
- 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
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/006—PBT, i.e. polybutylene terephthalate
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- 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
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
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- 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
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
-
- 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
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- 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
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3044—Bumpers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
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- Laminated Bodies (AREA)
Abstract
The invention discloses a fiber-reinforced anti-collision beam which comprises a main beam and reinforcing ribs, wherein the main beam comprises an outer continuous fiber-reinforced thermoplastic resin layer and an inner chopped fiber-reinforced thermoplastic resin layer; the continuous fiber reinforced thermoplastic resin layer is composed of a continuous fiber reinforced thermoplastic composite material A, and the continuous fiber reinforced thermoplastic composite material A comprises 30-50 parts by weight of thermoplastic resin, 30-70 parts by weight of continuous fiber and 1-5 parts by weight of compatilizer; the chopped fiber reinforced thermoplastic resin layer and the reinforcing ribs are composed of chopped fiber reinforced thermoplastic composite material B, and the chopped fiber reinforced thermoplastic composite material B comprises 20-80 parts by weight of thermoplastic resin, 20-50 parts by weight of chopped fibers and 2-6 parts by weight of compatilizer. The fiber reinforced anti-collision beam has the advantage of higher strength and is suitable for front and rear anti-collision beams of automobiles.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a fiber reinforced anti-collision beam and a preparation process and application thereof.
Background
The impact beam is installed around the vehicle to reduce the shock generated when the vehicle is collided. The impact beam is generally made of a cold-rolled steel sheet having a relatively high strength, so as to improve the strength of the impact beam against an external force. However, cold-rolled steel sheets are heavy and thus are difficult to use in the tendency of reducing weight of vehicles. To reduce the weight of impact beams, more researchers have focused on high strength fiber reinforced composites.
In order to maintain a high strength of the impact beam and further reduce the weight of the impact beam, fibers are often added to the raw materials from which the impact beam is made. For example, chinese patent application CN108312656A discloses a carbon fiber composite material for an impact beam, which comprises a plain carbon fiber impregnated layer and a twill carbon fiber impregnated layer alternately arranged in sequence, wherein the number of layers of the plain carbon fiber impregnated layer and the twill carbon fiber impregnated layer is 4-6. However, the manufacturing methods of the prior art impact beam are generally the following two methods: 1. and 2, respectively and independently forming the reinforcing ribs and the main beam, and then welding, connecting in the form of bolts, clamping grooves and the like or connecting in other physical modes, and injecting the reinforcing ribs into the main beam after the main beam is formed. However, the reinforcing ribs of the two methods are easy to peel off from the main beam during stress, so that the strength of the anti-collision beam is reduced.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a fiber reinforced anti-collision beam which has the advantages of light weight and higher strength compared with an anti-collision beam with the same thickness.
Another object of the present invention is to provide a method of making and use of the fiber-reinforced impact beam.
The invention is realized by the following technical scheme:
a fiber reinforced anti-collision beam comprises a main beam outside the anti-collision beam and reinforcing ribs inside the anti-collision beam, wherein the main beam comprises an outer continuous fiber reinforced thermoplastic resin layer and an inner chopped fiber reinforced thermoplastic resin layer; the continuous fiber reinforced thermoplastic resin layer is composed of a continuous fiber reinforced thermoplastic composite material A, and the continuous fiber reinforced thermoplastic composite material A comprises 30-50 parts by weight of thermoplastic resin, 30-70 parts by weight of continuous fiber and 1-5 parts by weight of compatilizer; the chopped fiber reinforced thermoplastic resin layer and the reinforcing ribs are composed of chopped fiber reinforced thermoplastic composite material B, and the chopped fiber reinforced thermoplastic composite material B comprises 20-80 parts by weight of thermoplastic resin, 20-50 parts by weight of chopped fibers and 2-6 parts by weight of compatilizer.
The thickness range of the continuous fiber reinforced thermoplastic resin layer in the main beam is 2-7mm, and the thickness range of the chopped fiber reinforced thermoplastic resin layer is 0.1-1 mm; the thickness range of the reinforcing ribs is 1-6 mm.
The chopped fibers have an average length in the range of 1 to 3 mm.
In the continuous fiber reinforced thermoplastic resin layer, the number of the continuous fibers is more than or equal to 3.
The main beam and the reinforcing ribs are integrally formed through die assembly, and are not welded or connected in other modes.
The thermoplastic resin is at least one of PP, PA, PBT and PC; in order to ensure the compatibility among all structures of the anti-collision beam, the main beam and the reinforcing ribs of the anti-collision beam are made of the same thermoplastic resin. Wherein, PP can have a melt index of 10-60 g/10min (230 ℃, 2.16kg under the test condition), PA can have a melt index of 10-60 g/10min (230 ℃, 2.16kg under the test condition), PBT can have a melt index of 10-60 g/10min (250 ℃, 2.16kg under the test condition), and PC can have a melt index of 10-60 g/10min (300 ℃, 1.2kg under the test condition).
Specifically, the PA resin may be PA6, PA610, XC 030.
The continuous fiber is at least one of continuous carbon fiber and continuous glass fiber;
the compatilizer is at least one selected from maleic anhydride grafted polypropylene, maleic anhydride grafted POE, ethylene-butyl acrylate grafted maleic anhydride, ethylene-butyl acrylate grafted glycidyl methacrylate and epoxy resin;
the chopped fiber is at least one selected from chopped carbon fiber and chopped glass fiber.
The continuous fiber reinforced thermoplastic composite material A and/or the chopped fiber reinforced thermoplastic resin composite material B also comprise 0-3 parts of auxiliary agent by weight; the auxiliary agent is at least one selected from an antioxidant, a lubricant and a weather-resistant agent.
The preparation method process of the fiber reinforced anti-collision beam comprises the following steps:
step A, winding the continuous fiber reinforced thermoplastic composite material A into a coiled material after the continuous fiber reinforced thermoplastic composite material A is immersed in a melting forced mould, and then cutting the coiled material to obtain a continuous fiber reinforced thermoplastic resin prepreg sheet with set width and length;
b, laying layers of the continuous fiber reinforced thermoplastic resin prepreg sheets with the set number of layers, and performing heat setting to obtain a thermoplastic composite material A plate;
and step C, placing the preheated thermoplastic composite material A plate cushion on a mould, extruding the molten chopped fiber reinforced thermoplastic composite material B on the thermoplastic composite material A plate, and then closing the mould for forming to obtain the fiber reinforced anti-collision beam.
The invention relates to an application of a fiber reinforced anti-collision beam, which is used for a vehicle-mounted front/rear anti-collision beam.
The invention has the following beneficial effects:
the preparation process can enable the main beam of the anti-collision beam to comprise the inner-layer chopped fiber thermoplastic resin layer with a certain thickness, and the inner-layer chopped fiber thermoplastic resin layer and the reinforcing ribs are integrally formed and made of the same composite material, so that the reinforcing ribs are firmly connected to the main beam of the anti-collision beam, and the integral strength is remarkably improved compared with the anti-collision beam with the same thickness.
Drawings
FIG. 1: crashproof roof beam structure chart.
FIG. 2: the crashproof roof beam structure schematic diagram, reference numeral 1 is the girder, and reference numeral 2 is the strengthening rib.
FIG. 3: the composite material structure of the main beam and the reinforcing ribs is simplified, wherein the reference numeral 11 is a continuous fiber thermoplastic resin layer, and the reference numeral 12 is a chopped fiber thermoplastic resin layer.
FIG. 4: and (5) an anti-collision beam test method diagram.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
PA 6: XC030, melt index 30g/10min, strain age;
PP-1: PPH-MN60, melt index 60g/10min China petrochemical North sea refining, LLC; PP-2: SP179, melt index 11g/10min, Middleyama;
continuous carbon fiber: the brand number is T700SC-12000-50C, and the manufacturer is Dongli;
continuous glass fiber: the trade mark is EDR 17-2400-;
short carbon fiber: the average length is 3mm, the trade mark is PAN 24t, and the manufacturer is Mitsubishi chemical;
chopped glass fiber: the average length is 3mm, the mark is 560A, and the manufacturer is a boulder group;
a compatilizer A: PC-28, maleic anhydride grafted ethylene-octene copolymer elastomer, manufacturer Foshan Berth;
a compatilizer B: YD019, epoxy, kaien shanghai of the manufacturer;
antioxidant: the same species is used for the commercial and parallel examples and comparative examples.
Examples 1-6 methods of making fiber reinforced impact beams: step A, winding a continuous fiber reinforced thermoplastic composite material A (the mixture ratio of continuous carbon fibers, PA6 and a compatilizer A is shown in a table) into a coiled material (the temperature is 300 ℃) after melting and forced in-mold impregnation, and then cutting to obtain a continuous fiber reinforced thermoplastic resin prepreg sheet with set width and length; b, laying layers of the continuous fiber reinforced thermoplastic resin prepreg sheets with the set number of layers, and carrying out heat setting to obtain a thermoplastic composite material A plate (the temperature is 280 ℃); and step C, placing the preheated thermoplastic composite material A plate pad on a mould, extruding the molten chopped fiber reinforced thermoplastic composite material B (the mixture ratio of the chopped carbon fibers, the PA6 and the compatilizer A is shown in a table) on the thermoplastic composite material A plate, and then closing the mould to mold (the temperature is 300 ℃) to obtain the fiber reinforced anti-collision beam.
Example 7/8 and comparative example 1 method of making a fiber reinforced impact beam: step A, winding a continuous fiber reinforced thermoplastic composite material A (the mixture ratio of continuous glass fiber, PP and compatilizer B is shown in a table) into a coiled material (the temperature is 280 ℃) after melting and forced in-mold impregnation, and then cutting to obtain a continuous fiber reinforced thermoplastic resin prepreg sheet with set width and length; b, laying layers of the continuous fiber reinforced thermoplastic resin prepreg sheets with the set number of layers, and carrying out heat setting to obtain a thermoplastic composite material A plate (the temperature is 220 ℃); and step C, placing the preheated thermoplastic composite material A plate cushion on a mold, extruding the molten chopped fiber reinforced thermoplastic composite material B (the proportions of the chopped glass fiber, the PP and the compatilizer B are shown in a table) on the thermoplastic composite material A plate, and then closing the mold to form (the temperature is 230 ℃) to obtain the fiber reinforced anti-collision beam.
Comparative example 2: impregnating a continuous fiber reinforced thermoplastic composite material A (the proportions of continuous glass fibers, PP and compatilizer B are shown in a table) in a melting forced mould, winding the impregnated material into a coiled material (the temperature is 280 ℃), and cutting the coiled material to obtain a continuous fiber reinforced thermoplastic resin prepreg sheet with set width and length; laying layers of the continuous fiber reinforced thermoplastic resin prepreg sheets with the set number of layers, carrying out heat setting to obtain a thermoplastic composite material A plate (the temperature is 230 ℃), placing the preheated thermoplastic composite material A plate on a die, carrying out die assembly molding (the temperature is 240 ℃), obtaining a fiber reinforced anti-collision beam main beam, and carrying out injection molding on a chopped fiber reinforced thermoplastic composite material B (the proportion of chopped glass fibers, PP and a compatilizer B is shown in a table) to obtain a reinforcing rib through an injection molding means, thus obtaining the fiber reinforced anti-collision beam.
The test methods are as follows:
(1) the strength test method comprises the following steps: referring to fig. 4, the two ends of the impact beam are supported, the middle is pressed, and the maximum bearing pressure before the impact beam breaks is measured.
Table 1: examples 1-6 parameters and test results for impact beams
Table 2: examples 7-8 and comparative examples 1-2 impact beams parameters and test results
As can be seen from example 7 and comparative example 1, when the main beam chopped fiber reinforced thermoplastic resin layer is too thin, the connection between the reinforcing ribs and the main beam is not firm enough, and the strength is significantly low.
From example 7 and comparative example 2, it can be seen that the strength is further reduced by using injection molding to prepare the reinforcing bar.
Claims (10)
1. A fiber reinforced anti-collision beam comprises a main beam (1) and reinforcing ribs (2), and is characterized in that the main beam comprises an outer continuous fiber reinforced thermoplastic resin layer (11) and an inner chopped fiber reinforced thermoplastic resin layer (12); the continuous fiber reinforced thermoplastic resin layer (11) is composed of a continuous fiber reinforced thermoplastic composite material A, and the continuous fiber reinforced thermoplastic composite material A comprises 30-50 parts by weight of thermoplastic resin, 30-70 parts by weight of continuous fiber and 1-5 parts by weight of compatilizer; the chopped fiber reinforced thermoplastic resin layer (12) and the reinforcing ribs (2) are composed of chopped fiber reinforced thermoplastic composite materials B, and the chopped fiber reinforced thermoplastic composite materials B comprise 20-80 parts by weight of thermoplastic resin, 20-50 parts by weight of chopped fibers and 2-6 parts by weight of compatilizer.
2. The fiber reinforced impact beam as claimed in claim 1, wherein the thickness of the continuous fiber reinforced thermoplastic resin layer in the main beam (1) is in the range of 2-7mm, and the thickness of the chopped fiber reinforced thermoplastic resin layer is in the range of 0.1-1 mm; the thickness range of the reinforcing ribs (2) is 1-6 mm.
3. The fiber reinforced impact beam of claim 1, wherein the chopped fibers have an average length in the range of 1-3 mm.
4. The fiber reinforced impact beam according to claim 1, wherein the number of the continuous fiber reinforced thermoplastic resin layers (11) is 3 or more.
5. The fiber reinforced impact beam of claim 1, wherein the main beam and the reinforcing ribs are integrally formed by die assembly.
6. The fiber reinforced impact beam of claim 1, wherein the thermoplastic resin is at least one selected from the group consisting of PP, PA, PBT, PC; the melt index of PP is 10-60 g/10min, and the test condition is 230 ℃ and 2.16 kg; the PA has a melt index of 10-60 g/10min, and the test conditions are 230 ℃ and 2.16 kg; the melt index of the PBT is 10-60 g/10min, and the test condition is 250 ℃ and 2.16 kg; the melt index of PC is 10-60 g/10min, and the test condition is 300 ℃ and 1.2 kg.
7. The fiber reinforced impact beam of claim 1, wherein the continuous fibers are selected from at least one of continuous carbon fibers, continuous glass fibers; the compatilizer is at least one selected from maleic anhydride grafted polypropylene, maleic anhydride grafted POE, ethylene-butyl acrylate grafted maleic anhydride, ethylene-butyl acrylate grafted glycidyl methacrylate and epoxy resin; the chopped fiber is at least one selected from chopped carbon fiber and chopped glass fiber.
8. The fiber reinforced impact beam of claim 1, further comprising 0 to 3 parts by weight of an auxiliary agent in the continuous fiber reinforced thermoplastic composite material a and/or the chopped fiber reinforced thermoplastic resin composite material B; the auxiliary agent is at least one selected from an antioxidant, a lubricant and a weather-resistant agent.
9. A process for manufacturing a fibre-reinforced impact beam as claimed in any one of claims 1 to 8, characterized in that it comprises the following steps:
step A, winding the continuous fiber reinforced thermoplastic composite material A into a coiled material after the continuous fiber reinforced thermoplastic composite material A is immersed in a melting forced mould, and then cutting the coiled material to obtain a continuous fiber reinforced thermoplastic resin prepreg sheet with set width and length;
b, laying layers of the continuous fiber reinforced thermoplastic resin prepreg sheets with the set number of layers, and performing heat setting to obtain a thermoplastic composite material A plate;
and step C, placing the preheated thermoplastic composite material A plate cushion on a mould, extruding the molten chopped fiber reinforced thermoplastic composite material B on the thermoplastic composite material A plate, and then closing the mould for forming to obtain the fiber reinforced anti-collision beam.
10. Use of a fibre-reinforced impact beam as claimed in any one of claims 1 to 8, in a vehicle front/rear impact beam.
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| CN1990961A (en) * | 2005-12-28 | 2007-07-04 | 曾建祥 | Composite material moulded well covers |
| CN102574335A (en) * | 2009-08-26 | 2012-07-11 | 拜尔材料科学股份公司 | Fiber-reinforced polyurethane molded part with three-dimensional raised structure |
| CN109109339A (en) * | 2018-07-12 | 2019-01-01 | 凌云工业股份有限公司上海凌云汽车研发分公司 | The preparation of thermoplastic resin based composite material and the method for enhancing anticollision component |
| CN113021939A (en) * | 2021-02-09 | 2021-06-25 | 博戈橡胶塑料（株洲）有限公司 | Manufacturing method of light-weight part based on continuous fibers and common fibers and product |
| CN114006116A (en) * | 2021-09-28 | 2022-02-01 | 上海瓴荣材料科技有限公司 | Thermoplastic composite sandwich battery box tray and manufacturing method thereof |
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