Thermoplastic Compound Plate-Shaped Material, Method For Manufacturing And Articles Manufactured Using The Same

a technology of thermoplastic compound plate and material, applied in the field of thermoplastic composite sheet, can solve the problems of insufficient strength and defects at welded lines, and achieve the effects of excellent mechanical properties, not only mechanical properties, such as bending strength, bending elastic modulus, impact strength and linear thermal expansion coefficien

Inactive Publication Date: 2007-08-30
SAMBARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016] Therefore, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide composite sheet which is excellent in not only mechanical properties, such as bending strength, bending elastic modulus, impact strength and linear thermal expansion coefficient, but also secondary processability, and is suitable for molding into various structures, such as panels for use as building materials, and automobile parts, as well as a manufacturing method thereof and an article manufactured therefrom.

Problems solved by technology

However, the products manufactured by this method have a problem in that they are insufficient in strength or cause defects at welded lines, due to insufficient fiber length.

Method used

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  • Thermoplastic Compound Plate-Shaped Material, Method For Manufacturing And Articles Manufactured Using The Same
  • Thermoplastic Compound Plate-Shaped Material, Method For Manufacturing And Articles Manufactured Using The Same
  • Thermoplastic Compound Plate-Shaped Material, Method For Manufacturing And Articles Manufactured Using The Same

Examples

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example 1

[0047] According to the inventive method as described above, a fiber-reinforced continuous prepreg tape having a thickness of 0.25 mm and a width of 25 mm is obtained by impregnating 40% by weight of glass fiber with thermoplastic polypropylene resin, a 4 mm-thick prepreg sheet was manufactured by weaving or laminating the fiber-reinforced continuous prepreg tape in order to use in manufacturing of a thermoplastic composite sheet. The sheet was measured for bending strength, sheet impact strength and Izod impact resistance, and the results are shown in Table 2 below.

example 2

[0050] According to the inventive method as described above, a prepreg layer woven or laminated with a continuous fiber prepreg tape having a thickness of 0.25 mm and a width of 25 mm, obtained by impregnating 40% by weight of glass fibers with thermoplastic polypropylene resin, was laminated in two layers on each of both sides of 1 mm-thick center layers made of a long fiber-resin composite, thus manufacturing a laminated sheet with a total thickness of 3 mm. The sheet was measured for bending strength, sheet impact strength and Izod impact strength, and the results are shown in Table 3 below.

example 3

[0054] According to the inventive method as described above, the continuous reinforcing fiber-impregnated prepreg layer 20 with a thickness of 0.5 mm was woven or laminated with a reinforcing fiber-impregnated prepreg tape with a thickness of 0.25 mm and a width of 25 mm, which has been obtained by impregnating thermoplastic polypropylene resin into glass fibers. The prepreg layer 20 was laminated in one layer on each of both sides of the 10 mm-thick center layer 10 consisting of a composite layer of 40% by weight of chaff and polypropylene resin. Between the center layer 10 and the continuous reinforcing fiber-impregnated prepreg layer 20, a 0.5 mm-thick polypropylene adhesive layer was provided and the layers were melt-adhered to each other, thus manufacturing a laminated sheet with a thickness of 12 mm. The sheet was measured for bending strength, sheet impact strength and Izod impact strength, and the results are shown in Table 4 below.

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Abstract

The present invention relates to a recyclable thermoplastic composite sheet which is excellent in mechanical properties, such as bending strength, bending elastic modulus, impact strength and linear thermal expansion coefficient, and also in secondary processability, and suitable for molding into various structures, such as panels for use as building materials, and automobile parts, as well as a manufacturing method thereof and an article manufactured therefrom. The sheet comprises: a center layer of a thermoplastic composite material comprising 40% by weight of reinforcing fibers with an average length of 1-30 mm and 60% by weight of a thermoplastic resin containing an organic filler; and a continuous reinforcing fiber-impregnated prepreg layer laminated on at least one surface of the upper surface and lower surface of the center layer, the prepreg layer comprising 5-65% by weight of reinforcing fibers and 35-95% by weight of a thermoplastic resin containing a small amount of inorganic filler.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a filing under 35 U.S.C. 371 of International Application No. PCT / KR2005 / 001250 filed Apr. 29, 2005, entitled “Thermoplastic Compound Plate-Shaped Material, Method for Manufacturing and Artides Manufactured Using the Same,” claiming priority of Korean Patent Application No. 10-2004-0030641 filed Apr. 30, 2004, which applications are incorporated by reference herein in their entirety. TECHNICAL FIELD [0002] The present invention relates to a thermoplastic composite sheet, a manufacturing method thereof and an article manufactured therefrom. Particularly, the thermoplastic composite sheet can substitute for wood and steel panels. BACKGROUND ART [0003] Japanese patent laid-open publication No. Hei 4-19935 discloses a process of forming decorative wood laminates, such as sheets, by impregnating fine wood and cellulose powder with urea resin, drying and neutralizing the impregnated material, and entraining the neutralized...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D04H13/00B32B27/04B32B3/26B32B27/02B32B27/12B60R19/03E04C2/296
CPCB32B27/12Y10T156/1028E04C2/296B32B5/024B32B5/20B32B5/245B32B27/20B32B27/32B32B2260/021B32B2260/046B32B2262/067B32B2262/101B32B2266/025B32B2605/08B32B2607/00B60R19/03Y10T428/249924Y10T428/24994Y10T428/249953B32B27/02
Inventor YOUN, SANG JUNJEONG, HO GAB
Owner SAMBARK
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