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Desulfurized gypsum regenerated plastic composite material as well as preparation method and application thereof

A technology of recycled plastics and composite materials, applied in the field of composite materials, can solve the problems of waste plastics not easy to age and degrade, ecological environment damage, etc., and achieve the effect of no wood knots and low water absorption

Active Publication Date: 2021-07-30
湖北声荣再生资源利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since waste plastics are not easy to age and degrade at room temperature, white pollution is increasing day by day, causing serious damage to the ecological environment

Method used

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  • Desulfurized gypsum regenerated plastic composite material as well as preparation method and application thereof
  • Desulfurized gypsum regenerated plastic composite material as well as preparation method and application thereof
  • Desulfurized gypsum regenerated plastic composite material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0025] (1) Prepare raw materials by the raw material formula shown in Table 1:

[0026] Table 1 raw material formula (by each component accounts for the percentage of raw material gross weight)

[0027]

[0028] (2) Add desulfurized gypsum and silane coupling agent into the mixer, and release after stirring for 5 minutes to obtain desulfurized gypsum modified by silane coupling agent.

[0029] (3) Put the desulfurized gypsum modified by the silane coupling agent prepared in step (2) into the high-speed mixer together with the rest of the raw materials, set the speed at 1000 rpm, turn on the high-speed mixer, stir for 10 minutes, and discharge the materials for use .

[0030] (4) Granulation: Put the mixed raw materials into the granulator. The temperature of the granulator is set at 220°C, 200°C, 190°C, 180°C, 175°C, 175°C, 170°C, and 170°C. After high-temperature plasticization, it is extruded from a granulation die and cut into composite material granules with a diamete...

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Abstract

The invention relates to a desulfurized gypsum regenerated plastic composite material as well as a preparation method and application thereof. The preparation method comprises the steps of preparing raw materials comprising the following components in percentage by weight: 55%-75% of silane coupling agent modified desulfurized gypsum, 25%-40% of regenerated plastic, 2.2%-2.8% of maleic anhydride and 1.5%-2.5% of calcium stearate, uniformly mixing the raw materials, and enabling the raw materials to be sequentially subjected to melting granulation and extrusion molding to obtain the desulfurized gypsum regenerated plastic composite material. The compressive strength of the prepared desulfurized gypsum regenerated plastic composite material can reach 41.7 MPa, the elastic modulus can reach 5089 MPa, the combustion index is 132-202 W / s, and the desulfurized gypsum regenerated plastic composite material is a material which is high in strength, good in water resistance and nonflammable. The desulfurized gypsum regenerated plastic composite material profile can be applied to the fields of traffic, gardens, municipal engineering, packaging and the like.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a desulfurized gypsum recycled plastic composite material and a preparation method and application thereof. Background technique [0002] Desulfurization gypsum coal-fired power plant is a by-product of sintering flue gas desulfurization. With the gradual popularization of sintering flue gas desulfurization equipment, the output of desulfurization gypsum is increasing day by day. The main component of desulfurization gypsum is CaSO 4 2H 2 O, the content is about 90wt%. The water content of desulfurized gypsum is relatively large, about 10wt% to 17wt%, and the main ash is Fe 2 o 3 and SiO 2 , contains more types of impurities, higher content of chlorine, mainly soluble salts, and its crystals contain impurities both inside and on the surface. my country's sintering flue gas desulfurization is still in the development period, and the utilization of desulfurizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/30C08K9/06C08K5/098C08K5/1539C08K13/06
CPCC08K3/30C08K9/06C08K5/098C08K5/1539C08K13/06C08K2003/3045C08L2207/20C08L23/12
Inventor 张利森张晓年林宏时朱发军何建波张鹏林瑜涂婕
Owner 湖北声荣再生资源利用有限公司
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