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Preparation method for unsaturated polyester resin reinforced and toughened by modified natural plant fiber and bio-based material

A technology of natural plant fiber and polyester resin, which is used in the preparation of bio-based materials to strengthen and toughen unsaturated polyester resin, can solve the problems of unfavorable circular development, harm to human body and environment, etc. in the field of modified natural plant fiber , to achieve the effect of improving biodegradability, protecting the environment and excellent mechanical properties

Inactive Publication Date: 2019-11-08
浙江衡昶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, environmental protection issues have attracted more and more attention. However, traditional modified materials are mostly petroleum-based materials, which are not conducive to recycling development, or are harmful to human body and the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method for reinforcing and toughening unsaturated polyester resin by modified natural plant fibers and bio-based materials, the preparation method comprising the following steps:

[0018] (1) Preparation method of modified okara: Grind soybean okara with a high-speed pulverizer, and then add 1 wt% of soybean okara in 3 batches. The coupling agent is N-2-aminoethyl-3- Aminopropyltrimethoxysilane, mixed for 3 minutes each time, dried at 80 degrees for 2 hours; then placed in a ball mill, ball milled for 4 hours; crushed with a high-speed pulverizer for 1 minute, sieved through 150 mesh, and dried at 100 degrees for 1 hour;

[0019] (2) Preparation method of modified bean dregs A: treat the modified bean dregs prepared in step (1) with a bio-based toughening modifier, and record it as modified bean dregs A; the specific method is as follows: add bio-based Toughening improver, the bio-based toughening improver uses epoxy fatty acid methyl ester, mixed with a h...

Embodiment 2

[0023] A preparation method for reinforcing and toughening unsaturated polyester resin by modified natural plant fibers and bio-based materials, the preparation method comprising the following steps:

[0024] (1) Preparation method of modified okara: Grind soybean okara with a high-speed pulverizer, then add 1.5 wt% coupling agent of soybean okara in 3 batches, the coupling agent is vinyltriacetoxysilane, each time Mix for 5 minutes, dry at 60 degrees for 1 hour; then put it in a ball mill, ball mill for 4 hours; crush it with a high-speed pulverizer for 1 minute, sieve through 150 mesh, and dry at 60 degrees for 1 hour;

[0025] (2) Preparation method of modified bean dregs A: treat the modified bean dregs prepared in step (1) with a bio-based toughening modifier, and record it as modified bean dregs A; the specific method is as follows: add bio-based Toughening improver, bio-based toughening improver adopts epoxy soybean oil, mixed with high-speed pulverizer for 5 minutes, a...

Embodiment 3

[0029] A preparation method for reinforcing and toughening unsaturated polyester resin by modified natural plant fibers and bio-based materials, the preparation method comprising the following steps:

[0030] (1) Preparation method of modified okara: Grind soybean okara with a high-speed grinder, then add 0.5 wt% of soybean okara in 3 batches of coupling agent, the coupling agent is isopropyl dioleic acid acyloxy ( Dioctyl phosphate acyloxy) titanate, mixed for 3 minutes each time, dried at 80 degrees for 4 hours; then placed in a ball mill, ball milled for 4 hours; crushed with a high-speed pulverizer for 3 minutes, sieved to 120 mesh, and dried at 80 degrees 2h;

[0031] (2) Preparation method of modified bean dregs A: treat the modified bean dregs prepared in step (1) with a bio-based toughening modifier, and record it as modified bean dregs A; the specific method is as follows: add bio-based Toughening improver, bio-based toughening improver adopts epoxy fatty acid octyl ...

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PUM

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Abstract

The invention relates to a preparation method for unsaturated polyester resin reinforced and toughened by modified natural plant fiber and a bio-based material. According to the invention, a bio-basedtoughening material is employed, modified soybean dreg fiber is adopted as a reinforcement, and thermosetting molding is performed to prepare a composite material. Soybean dregs are widely availableand low in cost, and can better bond with a polyester matrix after surface modification by a coupling agent. A biobased toughening improver is any one or a mixture of more selected from the group consisting of epoxidized soybean oil, epoxy ester and epoxy fatty acid ester. The method provided by the invention improves both the mechanical properties and the biodegradability of the unsaturated polyester composite material, and is simple in process and low in cost.

Description

technical field [0001] The invention relates to the field of processing unsaturated polyester resin composite materials, in particular to a method for preparing unsaturated polyester resin reinforced and toughened by modified natural plant fibers and bio-based materials. Background technique [0002] Unsaturated polyester resin is a linear polymer thermosetting resin containing ester bonds and carbon-carbon double bonds. become. Due to the simple production process and excellent comprehensive performance, it is widely used in large quantities. However, due to the high degree of cross-linking, the general unsaturated polyester resin is brittle, easy to crack, and low in strength, which cannot meet the needs of some production applications. Therefore, it is necessary to improve its strength and toughness. [0003] In the traditional processing process, inorganic fillers, nanoparticles, rubber elastomers and other objects are often used to modify unsaturated polyester resins....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L99/00C08L91/00C08K5/1515
CPCC08L67/06C08L2201/06C08L2205/03C08L2205/16C08L99/00C08K5/1515C08L91/00
Inventor 朱峻毅
Owner 浙江衡昶科技有限公司
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