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A continuous fiber reinforced thermoplastic resin composite sheet and its application

A technology for enhancing thermoplastic and thermoplastic resins, applied in the direction of synthetic resin layered products, laminated, layered products, etc., can solve the problem of reducing the weight of automobiles, and achieve the effect of reducing weight, high strength and rigidity

Active Publication Date: 2018-04-13
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using LFT long glass fiber reinforced thermoplastic composite material to injection mold the car door substrate is the mainstream technology in the current industry. Using LFT long glass fiber reinforced thermoplastic composite material to injection mold the car door substrate thickness is 1.2~2.6mm, which still cannot meet the needs of automobiles. Lightweight requirements, therefore, it is necessary to study a composite material that can not only maintain the corresponding mechanical properties of the existing door substrate, but also can be made thinner on the basis of the existing composite door substrate, thereby further reducing the weight of the car

Method used

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  • A continuous fiber reinforced thermoplastic resin composite sheet and its application
  • A continuous fiber reinforced thermoplastic resin composite sheet and its application
  • A continuous fiber reinforced thermoplastic resin composite sheet and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: as figure 1 As shown, a continuous fiber-reinforced thermoplastic resin composite sheet includes a middle layer 1, and a surface layer 2 compounded on the upper and lower surfaces of the middle layer 1, and a total of three layers of unidirectional continuous fiber reinforcement The thermoplastic resin prepreg is laid according to [90° / 0° / 90°] or [0° / 90° / 0°] layup method. The three layers of unidirectional continuous fiber-reinforced thermoplastic resin prepreg sheets are all the same alkali-free glass fiber reinforced polypropylene sheet, the content of glass fiber is 70wt%, the thickness of the middle layer 1 is 0.3mm, and the thickness of the two-side layer 2 is is 0.15mm, and the surface density of the middle layer 1 is 480g / m 2 , the areal density of both sides layer 2 is 240g / m 2 . In the composite sheet produced according to this plan, the mass ratio of the fibers parallel to the fiber length direction of the surface layer to the fibers perpendic...

Embodiment 2

[0024] Embodiment 2: the thickness of the middle layer 1 is 0.27mm, the thickness of the two-side layer 2 is 0.15mm, and the surface density of the middle layer 1 is 432g / m 2 , the areal density of both sides layer 2 is 240g / m 2, the rest are the same as in Example 1, the mass ratio of the fibers parallel to the fiber length direction of the surface layer to the fibers perpendicular to the fiber length direction of the surface layer in the composite sheet produced according to this scheme is 0.9:1, and the composite sheet is in the 0° direction The tensile strength on the surface is 405MPa and the tensile modulus is 19GPa; the tensile strength on the 90° direction is 325MPa and the tensile modulus is 16 GPa. The size of the composite sheet is 800mm×600mm, the thickness is 0.57mm, and the weight is 437g.

Embodiment 3

[0025] Embodiment 3: the thickness of the middle layer 1 is 0.33mm, the thickness of the two-side layer 2 is 0.15mm, and the surface density of the middle layer 1 is 500g / m 2 , the areal density of both sides layer 2 is 240g / m 2 , the rest are the same as in Example 1, the mass ratio of the fibers parallel to the fiber length direction of the surface layer to the fibers perpendicular to the fiber length direction of the surface layer in the composite sheet produced according to this scheme is 1.1:1, and the composite sheet is in the 0° direction The tensile strength on the surface is 415MPa, and the tensile modulus is 18GPa; the tensile strength on the 90° direction is 338MPa, and the tensile modulus is 15GPa. The size of the composite sheet is 800mm×600mm, the thickness is 0.63mm, and the weight is 480g.

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Abstract

The invention discloses a continuous fiber reinforced thermoplastic resin composite sheet and application thereof.The sheet comprises at least one middle layer and surface layers compounded to the upper and lower surfaces of the middle layer.The surface layers on the upper and lower surfaces and the middle layer are all prepared from a one-way continuous fiber reinforced thermoplastic resin preimpregnation sheet through hot-pressing and compounding.The mass ratio of fiber, parallel to length direction of surface layer fiber, in the continuous fiber reinforced thermoplastic resin composite sheet to fiber, perpendicular to the length direction of the surface layer fiber, in the continuous fiber reinforced thermoplastic resin composite sheet is (0.9-1.1):1.The mechanical properties of the composite sheet in the 0-degree direction and the 90-degree direction are approximate or the same.The composite sheet will not curl and is used as an automobile door base plate, and the thickness and weight of the automobile door base plate can be further reduced on the basis of meeting the requirement for the corresponding mechanical property.

Description

technical field [0001] The invention relates to the field of automobile interior door substrates, in particular to a continuous fiber reinforced thermoplastic resin composite sheet and its application as an automobile interior door substrate. Background technique [0002] Automobile lightweight technology is one of the effective ways to save energy and improve driving performance, and it is also one of the key technical goals pursued by domestic and foreign automobile manufacturers. The main way to reduce the weight of automobiles is to reduce the structural weight through reasonable structural design and the use of lightweight materials (such as composite materials, magnesium-aluminum alloys, plastics, etc.) under the premise of ensuring performance, so as to achieve energy-saving and environmental protection functions. [0003] At present, door substrates for automobiles are injection molded using metal or LFT long glass fiber reinforced thermoplastic composites. Using me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/08B32B27/04B32B33/00B32B37/10B32B37/06B32B37/08B32B38/00B32B38/08B32B43/00C08L23/12C08L51/06C08L91/06C08L23/06C08L23/30C08K7/14B29C70/34
CPCB29C70/34B32B5/08B32B33/00B32B37/06B32B37/08B32B37/10B32B38/0004B32B38/0036B32B38/08B32B43/003B32B2260/021B32B2260/046B32B2307/50C08L23/12C08L2205/03C08L2205/035C08L51/06C08L91/06C08L23/06C08L23/30C08K7/14
Inventor 黄险波陈大华范欣愉孙雅杰金思宇李晓拓熊鑫
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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