A kind of isocyanate cross-linked soybean oil-based resin/natural fiber composite material

A soybean oil-based resin and natural fiber technology, applied in the field of natural plant fiber reinforced resin composite materials, can solve the problems of poor heat resistance, low cross-linking degree of epoxy soybean oil acrylate, high viscosity, etc., and achieve improved cross-linking degree Effect

Active Publication Date: 2016-10-05
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a soybean oil-based resin / natural fiber composite material cross-linked by isocyanate, which solves the shortcomings of epoxy soybean oil acrylate, such as low cross-linking degree, high viscosity and poor heat resistance at room temperature, which cannot be used in large quantities. Problems in the preparation of natural fiber composites

Method used

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  • A kind of isocyanate cross-linked soybean oil-based resin/natural fiber composite material
  • A kind of isocyanate cross-linked soybean oil-based resin/natural fiber composite material
  • A kind of isocyanate cross-linked soybean oil-based resin/natural fiber composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Raw materials: natural fiber is hemp fiber (hemp fiber count is 130, average length is 3cm), purchased from Anhui Tongling Sanxing Hemp Industry Co., Ltd.; soybean oil derivative is epoxy soybean oil acrylate (AESO) (model: F03 ; Viscosity (23°C): 8000~20000cps; acid value: ≤ 12 mgKOH / g), purchased from Jiangsu Litian Technology Co., Ltd.; crosslinking agent is 3-isopropyl-dimethylbenzyl isocyanate (TMI), Purchased from TCI (Shanghai) Chemical Industry Development Co., Ltd.; the initiator was tert-butyl peroxybenzoate (TBPB), purchased from Sigma-Aldrich (Shanghai) Trading Co., Ltd.

[0023] Natural Fiber / Vegetable Oil Based Thermosetting Resin Composites:

[0024] The preparation process of isocyanate-crosslinked soybean oil-based resin is as follows: soybean oil derivatives (90g) and crosslinking agent (10g) are placed in a round bottom flask, and stirred with a magnetic stirrer for 15-30min at room temperature to obtain large Soybean oil-based thermosetting resin mi...

Embodiment 2

[0028] Raw materials: natural fiber is hemp fiber (hemp fiber count is 130, average length is 3cm), purchased from Anhui Tongling Sanxing Hemp Industry Co., Ltd.; soybean oil derivative is epoxy soybean oil acrylate (AESO) (model: F03 ; Viscosity (23°C): 8000~20000cps; acid value: ≤ 12 mgKOH / g), purchased from Jiangsu Litian Technology Co., Ltd.; crosslinking agent is 3-isopropyl-dimethylbenzyl isocyanate (TMI), Purchased from TCI (Shanghai) Chemical Industry Development Co., Ltd.; the initiator was tert-butyl peroxybenzoate (TBPB), purchased from Sigma-Aldrich (Shanghai) Trading Co., Ltd.

[0029] Natural Fiber / Vegetable Oil Based Thermosetting Resin Composites:

[0030] The preparation process of isocyanate-crosslinked soybean oil-based resin is as follows: put soybean oil derivatives (85g) and crosslinking agent (15g) in a round-bottomed flask, and stir with a magnetic stirrer for 15-30min at room temperature to obtain vegetable oil Base thermosetting resin mixture; soybea...

Embodiment 3

[0034]Raw materials: natural fiber is hemp fiber (hemp fiber count is 130, average length is 3cm), purchased from Anhui Tongling Sanxing Hemp Industry Co., Ltd.; soybean oil derivative is epoxy soybean oil acrylate (AESO) (model: F03 ; Viscosity (23°C): 8000~20000cps; acid value: ≤ 12 mgKOH / g), purchased from Jiangsu Litian Technology Co., Ltd.; crosslinking agent is 3-isopropyl-dimethylbenzyl isocyanate (TMI), Purchased from TCI (Shanghai) Chemical Industry Development Co., Ltd.; the initiator was tert-butyl peroxybenzoate (TBPB), purchased from Sigma-Aldrich (Shanghai) Trading Co., Ltd.

[0035] Natural Fiber / Vegetable Oil Based Thermosetting Resin Composites:

[0036] The preparation process of isocyanate-crosslinked soybean oil-based resin is as follows: soybean oil derivatives (80g) and crosslinking agent (20g) are placed in a round-bottomed flask, and stirred with a magnetic stirrer for 15-30min at room temperature to obtain large Soybean oil-based thermosetting resin m...

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Abstract

The invention discloses an isocyanate-cross-linked soybean oil-based resin / natural fiber composite material and a preparation method thereof. The method comprises the following steps: adopting a di-functional group isocyanate monomer as a cross-linking agent of epoxy soybean oil acrylate, and preparing soybean oil-based thermosetting resin of which the degree of cross linking, the viscosity and the heat resistance are greatly improved; carrying out hot press molding for natural fiber, the isocyanate-cross-linked soybean oil-based resin and an initiator, and thus obtaining the natural fiber-reinforced soybean oil-based resin composite material. The prepared natural fiber-reinforced soybean oil-based thermosetting resin composite material has good tensile strength, tensile modulus, bending strength, bending modulus and impact strength.

Description

technical field [0001] The invention belongs to the technical field of natural plant fiber reinforced resin composite materials, in particular to an isocyanate-crosslinked soybean oil-based resin / natural fiber composite material. Background technique [0002] In natural plant fiber reinforced polymer composites, the most commonly used thermosetting resins are epoxy resins, phenolic resins and unsaturated polyester resins. Generally, these thermosetting resins have good mechanical properties, chemical resistance and process performance, but the environmental and air pollution problems caused by the volatilization of toxic substances (such as formaldehyde, styrene, etc.) during use have caused great focus on. In addition, the continuous depletion of petroleum resources and rising prices have forced people to seek and develop new renewable bio-based resins. Acrylate epoxidized soybean oil (AESO) is obtained by reacting soybean oil with acrylic acid after epoxidation. At prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/02C08L91/00C08K5/14C08J3/24C08K5/29
Inventor 邱仁辉刘文地谢天顺陈婷婷沈云玉许博皓张其运
Owner FUJIAN AGRI & FORESTRY UNIV
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