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Composite laminate and method for producing same

A composite lamination and manufacturing method technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve problems such as heat transfer obstruction, excessive temperature increase, and inability to stably manufacture FRTP parts, and achieve Excellent releasability and excellent surface smoothness

Pending Publication Date: 2020-07-17
OTSUKA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, heat transfer from the heated or cooled mold to the laminate substrate is hindered due to the use of a release film
When the heat transfer from the mold to the laminate base is hindered, the melting and cooling and solidification of the thermoplastic resin become insufficient, and mechanical properties such as strength and rigidity of the obtained FRTP part decrease
If the temperature of the mold is excessively raised or lowered to solve this problem, the mold may shrink and expand repeatedly, and may be damaged
In this case, FRTP parts with good surface appearance and high quality cannot be manufactured stably

Method used

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  • Composite laminate and method for producing same
  • Composite laminate and method for producing same
  • Composite laminate and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 5 and comparative example 1～ comparative example 5

[0125] The blending ratios shown in Table 1 were melt-kneaded by a twin-screw extruder to produce pellets. In addition, the barrel temperature of the twin-screw extruder is 230°C for Examples 1 to 2 and Comparative Examples 1 to 3, 240°C for Example 3, Example 4 and Comparative Example 4, and 240°C for Examples 5 and 3. In Comparative Example 5, it was 350°C.

[0126]After drying the obtained pellets, using a film extruder (manufactured by Toyo Seiki Co., Ltd., connecting single-screw extruder D2020 (L / D=20) to LABOPLASTOMILL 4C150-01), Example 1 to Example 2 and comparative example 1~comparative example 3 with barrel temperature 230 ℃, embodiment 3, embodiment 4 and comparative example 4 with barrel temperature 240 ℃, embodiment 5 and comparative example 5 with barrel temperature 350 ℃, will from The molten resin extruded from the T-die (150 mm in width and 0.2 mm in thickness) was uniaxially stretched so that the film had a target thickness through a film pulling device, an...

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Abstract

Provided is a composite laminate which exhibits excellent mold releasability from a mold during the production process, and which has excellent surface appearance (surface smoothness). A composite laminate 1 which comprises an A layer 2 and a B layer 3, and wherein the A layer 2 is provided on one surface or both surfaces of the B layer 3. This composite laminate 1 is configured such that: the A layer 2 contains inorganic fibers (a1) that have an average fiber length of from 1 [mu]m to 300 [mu]m and a thermoplastic resin (a2); and the B layer 3 contains reinforcing fibers (b1) that have an average fiber length of 1 mm or more and a thermoplastic resin (b2).

Description

technical field [0001] The present invention relates to a fiber-reinforced composite laminate and a method for producing the composite laminate. Background technique [0002] Fiber-reinforced resins are used in various fields such as golf clubs, tennis rackets, aircrafts, and automobiles as materials that replace metals because they are light and strong. In particular, in recent years, fiber-reinforced resins have been attracting attention in the automotive field because weight reduction of automobiles has been demanded in order to achieve low fuel consumption. However, there are various problems in using fiber-reinforced resins for automobile parts. For example, fiber-reinforced resins made of thermosetting resins require heat treatment (curing reaction) after molding, and therefore cannot achieve the high productivity and low cost necessary for the manufacture of automotive parts. Therefore, instead of thermosetting resins, fiber-reinforced thermoplastic resins (hereinaf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/28C08J5/04
CPCB32B19/06B32B2260/046B32B2262/101B32B2262/106B32B2262/0269C08J5/042B32B19/02B32B2605/08B32B2605/18B32B2605/00B32B5/26C08J2377/02B32B27/20C08J5/04C08K7/02B32B2260/021C08J5/0405B32B27/18B32B27/281B32B27/34B32B2262/0261B32B2262/103B32B2262/105C08J5/043C08J5/046
Inventor 八木洋稻田幸辅
Owner OTSUKA CHEM CO LTD
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