CN116922872A - Continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and preparation method and application thereof - Google Patents

Continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and preparation method and application thereof Download PDF

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Publication number
CN116922872A
CN116922872A CN202210373719.4A CN202210373719A CN116922872A CN 116922872 A CN116922872 A CN 116922872A CN 202210373719 A CN202210373719 A CN 202210373719A CN 116922872 A CN116922872 A CN 116922872A
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CN
China
Prior art keywords
continuous fiber
cfrtp
reinforced thermoplastic
fiber reinforced
sheet
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210373719.4A
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Chinese (zh)
Inventor
叶连付
汪磊
郎江山
刘志勇
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Wuxi Bojin Auto Parts Co ltd
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Wuxi Bojin Auto Parts Co ltd
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Publication date
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Priority to CN202210373719.4A priority Critical patent/CN116922872A/en
Publication of CN116922872A publication Critical patent/CN116922872A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B29B11/12—Compression moulding
    • 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
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • 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
    • C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • 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
    • C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • 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
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/06—Polyamides derived from polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2477/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The invention relates to the technical field of high polymer materials, in particular to a continuous fiber reinforced thermoplastic Composite (CFRTP) sheet, a preparation method and application thereof. The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet comprises, in weight percent: 60% of continuous fibers, 40% of thermoplastic resin; the thickness of the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet is not limited. The invention also relates to a preparation method and application of the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet. The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet is prepared by an infrared heating mode process and is suitable for industrial mass production. The composite sheet can be made into any shape and specification, and is suitable for various automobile reduction composite materials.

Description

Continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and preparation method and application thereof
Technical Field
The invention relates to a composite sheet and a preparation method thereof, in particular to a continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and a preparation method and application thereof.
Background
The continuous fiber reinforced thermoplastic composite material (CFRTP) sheet is a high-strength, high-rigidity and high-toughness composite material which is manufactured by taking continuous fibers as a reinforcing material, taking thermoplastic resin as a matrix, heating, rolling and forming the thermoplastic resin into a continuous fiber strip, cutting the continuous fiber strip, and then using different angles to lay up an infrared heating die for high-pressure curing.
Disclosure of Invention
The invention aims to provide a continuous fiber reinforced thermoplastic Composite (CFRTP) sheet with high strength, high rigidity and high toughness, which is suitable for industrial mass production.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet comprises the following mixed components in percentage by weight: a continuous fiber ribbon made of 60% continuous fibers and 40% thermoplastic resin.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet material is characterized in that continuous fiber strips are laminated and arranged according to the modes of 0 DEG, 45 DEG and 90 DEG except for the weight percentage.
The thickness of the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet is not limited, and is generally 0.2 mm-10 mm, preferably 0.6 mm-5 mm. The specific thickness is determined according to the actual application scene of the composite material sheet.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet is formed by laying one or more strips of glass fiber, carbon fiber or aramid fiber. If the fibrous material is a single fibrous tape laid, the glass fibers are preferred.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet of the present invention includes thermoplastic resins including, but not limited to, at least one of polyamide 6, polyhexamethylene adipamide, polypropylene.
It is another object of the present invention to provide a method for preparing said continuous fiber reinforced thermoplastic Composite (CFRTP) sheet.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet can be realized in an infrared heating mode, and is suitable for industrial mass production.
The specific preparation method of the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet comprises the following steps:
1) Uniformly mixing, heating, rolling and forming the continuous fibers and the resin according to the amount to obtain the continuous fiber strip, wherein the temperature is in the melting temperature range of the thermoplastic resin, generally 180-320 ℃ and the time is 60-300 s;
2) Stacking and arranging the continuous fiber strips according to the amounts in a mode of 0 degree, 45 degrees and 90 degrees;
3) Uniformly heating the continuous fiber strip in an infrared high-temperature environment, wherein the temperature is in the melting temperature range of the thermoplastic resin, generally 200-400 ℃ and the time is 60-300 s;
4) Placing the continuous fiber strip in the molten state in a closed high-pressure die, controlling the pressure to be 5000-36000 kN, performing heat preservation and pressure maintaining molding (60-300 s), and naturally cooling to obtain the continuous fiber reinforced thermoplastic composite material (CFRTP) sheet.
It is a further object of the present invention to provide the use of a thermoplastic fiber Composite (CFRTP) sheet.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet can be cut and spliced at will to prepare preformed bodies with different shapes and sizes, and is suitable for processing and forming various automobile composite component products. The processing and forming method can adopt various processing and forming methods for preparing products by resin fiber composite materials in the prior art, such as compression molding, roll forming, resin transfer molding and the like, and is particularly suitable for resin transfer molding. The thermoplastic fiber Composite (CFRTP) sheet of the present invention can have high dimensional accuracy and high productivity even when parts of complex shapes are produced.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet of the invention has the following advantages: (1) low density, high strength and good impact toughness; (2) short processing and forming time and low manufacturing cost; and (3) the product can be recycled and is environment-friendly.
The continuous fiber reinforced thermoplastic Composite (CFRTP) sheet of the invention for preparing automobile parts has the following advantages: (1) The molding speed is high, the production efficiency is high, and the continuous batch production is realized; (2) Can be cut and spliced at will to prepare preformed bodies with different shapes and sizes; (3) The dimensional accuracy is high, is fit for preparing the automobile spare part of complicated shape.
Drawings
FIG. 1 is a schematic view of the product and fiber orientation according to an embodiment of the present invention.
Fig. 2 is a schematic illustration of a continuous fiber ribbon manufacturing process according to an embodiment of the invention.
Fig. 3 is a schematic illustration of a continuous fiber reinforced thermoplastic Composite (CFRTP) sheet preparation process in accordance with an embodiment of the invention.
In FIG. 2, 1. Continuous fibers, 2. Thermoplastic resin, 3. Heat, 4. Rollers, 5. Continuous fiber ribbon.
Fig. 3, 6, continuous fiber ribbon, 7, cut, 8, heated die, 9, cooled set, 10, continuous fiber reinforced thermoplastic Composite (CFRTP) sheet.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, and it should be noted that the following embodiments are only for further description of the present invention and should not be construed as limiting the scope of the present invention, and some insubstantial modifications and adjustments of the present invention by those skilled in the art from the present disclosure are still within the scope of the present invention.
Comprises the following components: 60% of continuous fibers and 40% of thermoplastic resin. The specific preparation process comprises the following steps: 1) Mixing the following components in percentage by weight: 4, uniformly mixing, heating, rolling and solidifying the continuous fibers and the thermoplastic resin to obtain the continuous fiber strip, wherein the temperature is generally 180-320 ℃ and the time is 60-300 s; 2) Arranging the 17 layers of continuous fiber strips in a lamination mode of 0 degree, 45 degrees and 90 degrees; 3) Uniformly heating the continuous fiber strips placed in a laminated way in an infrared high-temperature environment, wherein the temperature is in the melting temperature range of the thermoplastic resin, generally 200-400 ℃ and the time is 60-300 s; 4) Placing the continuous fiber strip in the molten state in a closed high-pressure die, controlling the pressure to be 5000-36000 kN, performing heat preservation and pressure maintaining molding (60-300 s), and naturally cooling to obtain the continuous fiber reinforced thermoplastic composite material (CFRTP) sheet with the thickness of 5mm.
While the foregoing has been a description of the general and specific embodiments of the invention in detail, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims (9)

1. A continuous fiber reinforced thermoplastic Composite (CFRTP) sheet comprising, in weight percent, the following mixed components: 60% of continuous fibers and 40% of thermoplastic resin.
2. A continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to claim 1 wherein:
the continuous fiber and the thermoplastic resin are uniformly mixed according to the weight percentage, heated, rolled and molded to prepare the continuous fiber strip.
3. A continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to claim 2 wherein:
the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet is formed by cutting the continuous fiber strips and then stacking the cut continuous fiber strips in a mode of 0 DEG, 45 DEG and 90 deg.
4. A continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to claim 3 wherein:
the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet material can be made of one or more fiber materials selected from glass fiber, carbon fiber or aramid fiber.
5. A continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to claim 4 wherein:
the continuous fiber material comprises a unidirectional fiber strip material and a woven fiber strip material.
6. A continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to claim 1 wherein:
the thermoplastic resin is at least one selected from polyamide 6, polyhexamethylene adipamide and polypropylene.
7. A method of producing a continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to any one of claims 1 to 6, comprising the steps of:
uniformly mixing the continuous fibers with thermoplastic resin according to the amount, heating, rolling and forming to obtain a continuous fiber strip;
stacking the continuous fiber strips according to the angle;
uniformly heating the continuous fiber strip in an infrared high-temperature environment;
and placing the heated continuous fiber strip in a closed high-pressure die, and naturally cooling after pressure maintaining and forming to obtain the continuous fiber reinforced thermoplastic Composite (CFRTP) sheet.
8. The method of making a continuous fiber reinforced thermoplastic Composite (CFRTP) sheet according to claim 7, wherein:
the temperature range of the infrared high-temperature heating process in the step 1) is controlled to be 180-320 ℃ and the time is controlled to be 60-300 s;
the lamination mode of the step 2) is to laminate according to the modes of 0 degree, 45 degrees and 90 degrees;
the temperature range of the infrared high-temperature heating process in the step 3) is controlled to be 200-400 ℃ and the time is controlled to be 60-300 s;
4) And 4) the pressure maintaining process of the closed high-pressure die, wherein the pressure is controlled to be 5000-36000 kN.
9. Automotive composite part product made by continuous fiber reinforced thermoplastic Composite (CFRTP) sheet processing according to any one of claims 1 to 6.
CN202210373719.4A 2022-04-11 2022-04-11 Continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and preparation method and application thereof Pending CN116922872A (en)

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CN202210373719.4A CN116922872A (en) 2022-04-11 2022-04-11 Continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and preparation method and application thereof

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Application Number Priority Date Filing Date Title
CN202210373719.4A CN116922872A (en) 2022-04-11 2022-04-11 Continuous fiber reinforced thermoplastic Composite (CFRTP) sheet and preparation method and application thereof

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CN116922872A true CN116922872A (en) 2023-10-24

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