Degradation method of resin matrix glass fiber reinforced plastic composite materials

A technology of composite materials and glass fiber reinforced plastics, which is applied in the chemical industry, can solve problems such as undiscovered and environmental impacts, and achieve the effects of low cost, low requirements, and low processing costs

Inactive Publication Date: 2012-12-26
天津市天联滨海复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, resin-based FRP composite materials have been widely used in China. Generally speaking, the service life of this material is 10-50 years. However, these materials will produce a large amount of The existence of these wastes will have a great impact on the environment. Now, there are a large number of waste resin-based FRP composite materials that need to be treated every year in China, but there is no effective treatment of these waste resin-based FRP composite materials. method

Method used

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  • Degradation method of resin matrix glass fiber reinforced plastic composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 As shown, the degradation method of the resin-based FRP material provided in this example is to add 2 / 3 capacity of benzyl alcohol into the reaction kettle 1 under normal pressure conditions, and then add 300g of the ortho-phthalic unsaturated polyester resin base that needs to be degraded. For FRP composite materials, it should be ensured that the composite materials are completely immersed in benzyl alcohol, then 0.3g of tripotassium phosphate is added, and then the temperature of the reactor 1 is raised to 190°C, and the temperature is maintained for 20h, thus the above-mentioned ortho-phthalic unsaturated The polyester resin-based FRP composite material is thermally degraded into glass fibers and o-phthalic unsaturated polyester resin, and finally the glass fiber and o-phthalic unsaturated polyester resin are separated.

Embodiment 2

[0017] Such as figure 1 As shown, the degradation method of the resin-based FRP material provided in this embodiment is to add 2 / 3 capacity of benzyl alcohol in the reaction kettle 1 under normal pressure conditions, and then add 346kg of 10mm thick m-benzene type unsaturated polystyrene that needs to be degraded. For the ester resin-based FRP composite material, it should be ensured that the composite material is completely immersed in benzyl alcohol, then 3.46g of tripotassium phosphate is added, and then the temperature of the reaction kettle 1 is raised to 190°C, and the temperature is maintained for 25h, thus the above m-benzene Type unsaturated polyester resin-based FRP composite material is thermally degraded into glass fiber and isophthalic unsaturated polyester resin, and finally the glass fiber and isophthalic unsaturated polyester resin are separated.

Embodiment 3

[0019] Such as figure 1 As shown, the degradation method of the resin-based FRP material provided in this embodiment is to add 2 / 3 capacity of benzyl alcohol in the reaction kettle 1 under normal pressure conditions, and then add 8mm thick (1.05kg) vinyl resin that needs to be degraded It should be ensured that the resin-based FRP material is completely submerged in benzyl alcohol, then 1g of tripotassium phosphate is added, and then the temperature of the reactor 1 is raised to 190°C, and the temperature is maintained for 22 hours, thereby compounding the resin-based FRP The material is thermally degraded into glass fiber and resin, and finally the glass fiber and resin are separated.

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Abstract

The invention provides a degradation method of resin matrix glass fiber reinforced plastic composite materials. The resin matrix glass fiber reinforced plastic composite materials are soaked in benzyl alcohol serving as a solvent under an ordinary pressure, simultaneously tripotassium phosphate is added to serve as a catalyst, then treatment is carried out at a temperature of 190 DEG C for 15-25 hours, and the resin matrix glass fiber reinforced plastic composite materials are degraded into glass fibers and resin. The degradation method of resin matrix glass fiber reinforced plastic composite materials has the following advantages: (1) the used degradation material benzyl alcohol is a food additive, is non-toxic, free of harm, low in cost and wide in source; (2) a degradation process is carried out under the ordinary pressure and has low requirements on equipment; (3) the degradation solvent and the catalyst can be repeatedly used so that the treatment cost is low; and (4) the degradation process cannot damage components in the resin matrix glass fiber reinforced plastic composite materials, such as the glass fibers, can recover the components, and can be used in fields with low strength requirements.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for degrading a resin-based FRP composite material. Background technique [0002] Resin-based FRP composites are mainly composed of resin and glass fibers. At present, resin-based FRP composite materials have been widely used in China. Generally speaking, the service life of this material is 10-50 years. The existence of these wastes will have a great impact on the environment. At present, there are a large number of waste resin-based FRP composite materials in China that need to be treated every year, but no effective treatment of these waste resin-based FRP composite materials has been found. method. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a method for degrading resin-based FRP composite materials that is safe, environmentally friendly and has low operating cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/04C08L67/06C08L101/02C08K7/14C03B37/01
CPCY02P20/143Y02W30/62
Inventor 邹勋
Owner 天津市天联滨海复合材料有限公司
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