Flexible high-density fiberboard and method for manufacturing the same

A high-density fiberboard, flexible technology, applied in the direction of manufacturing tools, flat products, and other household appliances, can solve problems such as high health risks

Inactive Publication Date: 2017-04-26
UNIV STUTTGART INST FUR TRAGKONSTRUKTIONEN & KONSTRUKTIVES ENTWERFEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the combination of natural components with polyurethane and its isocyanate content lead to high health risks

Method used

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  • Flexible high-density fiberboard and method for manufacturing the same

Examples

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Embodiment Construction

[0053] Preferred examples of the flexible high-density fiberboard of the present invention produced by the method of the present invention are described below. It should be noted, however, that the scope of the present invention is by no means limited by this example.

[0054] raw material

[0055] Straw: straw straw

[0056] Thermoplastic Elastomers: 2505 vinyl acetate-ethylene-vinyl ester copolymer powder (obtained from Wacker Chemie AG in Munich, Germany)

[0057] Straw Analysis and Preparation for Synthesis

[0058] Chemical analysis

[0059] Straws 1 and 2 were chopped and burned at 550 °C to prepare straw ash samples. The inorganic chemical components of the two straw ash samples were analyzed, and the results shown in Table 1 were obtained.

[0060] Table 1 Chemical composition of inorganic ash components of straw 1 and 2

[0061]

[0062] Humidity Assessment

[0063] The moisture content of straws 1 and 2 was measured according to the American Society of Agri...

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PUM

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Abstract

A flexible high-density fiberboard which is essentially free of formaldehyde and isocyanates comprises 70 to 90 % by weight of straw fibers, and 30 to 10 % by weight of a thermoplastic elastomer and one or more optional additive(s). Furthermore, a method for manufacturing such a flexible high-density fiberboard comprises the steps of providing straw fibers, providing a thermoplastic elastomer in powder form, optionally providing one or more additive(s), dry mixing the straw fibers, the thermoplastic elastomer powder and optionally the one or more additive(s), such that a mixture comprising 70 to 90 % by weight of the straw fibers, and 30 to 10 % by weight of the thermoplastic elastomer and one or more of the optional additive(s) is obtained, extruding the obtained mixture at a temperature such that the thermoplastic elastomer powder is in a molten state, and pressing the extruded mixture.

Description

technical field [0001] The invention relates to a flexible high-density fiberboard and a manufacturing method thereof. In particular, the present invention relates to a flexible high-density fiberboard substantially free of formaldehyde and isocyanate and comprising straw fibers and a thermoplastic elastomer and a method of making the same. Background technique [0002] Fibreboards are a class of products made from fibers of various origins (usually natural fibers from wood, sugar cane, hemp, straw, etc.) and binders or even binder-free products. Types of fiberboard include particleboard, medium density fiberboard (MDF), and hardboard. Fiberboard is sometimes used as a synonym for particleboard, but particleboard usually refers to low-density fiberboard. Fibreboard, especially MDF, is used extensively in the furniture industry. While the pieces should be visible, fiberboard is usually fitted with a veneer to give it the appearance of regular wood. In the automotive indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/00B27N3/04
CPCB27N3/002B27N3/04B27N1/003B27N3/28B27N7/005
Inventor 哈娜·达伊扬·克尼佩尔斯
Owner UNIV STUTTGART INST FUR TRAGKONSTRUKTIONEN & KONSTRUKTIVES ENTWERFEN
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