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Method for preparing light general plastic composite material by adding bulk industrial solid wastes

An industrial solid waste, general-purpose plastic technology, applied in the field of chemical material preparation, can solve the problems of unpublished test data, poor mechanical properties of composite materials, etc., and achieve the effects of high product added value, high strength and toughness, and low cost.

Inactive Publication Date: 2015-02-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Looking at the work of predecessors, we can see that it is still in its infancy in the preparation of lightweight general-purpose plastic composite materials by adding bulk industrial solid waste such as fly ash and industrial gypsum. The main work focuses on the use of foamed plastics (mainly polystyrene foam) Mechanically mix with additives to prepare insulation boards or sandwich panels, and the mechanical properties of composite materials are not good or even have no public test data

Method used

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  • Method for preparing light general plastic composite material by adding bulk industrial solid wastes
  • Method for preparing light general plastic composite material by adding bulk industrial solid wastes
  • Method for preparing light general plastic composite material by adding bulk industrial solid wastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The fly ash was roasted at 200°C for 1 hour, and after cooling, it was pulverized and finely ground through a 300-mesh sieve. Use composite surface modifier (aluminate coupling agent and titanate coupling agent, the weight ratio of the two is 1:1) to carry out surface modification treatment on the above fly ash powder, fly ash and composite modification The agent weight ratio is 100:2. 100 parts of PP, 100 parts of fly ash after surface modification, composite blowing agent (azodicarbonamide (AC), zinc oxide (ZnO) and sodium bicarbonate (NaHCO 3 ) 1:0.2:0.5) 4 parts, plasticizer (peanut oil and diallyl phthalate, the weight ratio of the two is 1:5) 12 parts, heat stabilizer isooctanoic acid 0.6 parts, antioxidant CA 0.3 parts 1. Lubricant Polystearic acid 1 part is uniformly mixed in a high-speed mixer, granulated by a plastic granulator at 180°C, and then injected and foamed. It can also be directly injected and foamed by an injection molding machine.

[0045] The p...

Embodiment 2

[0047] The phosphogypsum was roasted at 800°C for 0.5 hours, cooled, crushed and finely ground through a 100-mesh sieve. Using a composite surface modifier (silane coupling agent and titanate coupling agent, the weight ratio of the two is 1:0.1) to carry out surface modification treatment on the above phosphogypsum powder, the weight ratio of phosphogypsum to composite modifier is 100:1. 100 parts of PVC, 80 parts of surface-modified phosphogypsum, composite foaming agent (azodicarbonamide (AC), zinc oxide (ZnO) and sodium bicarbonate (NaHCO 3 ) 1:0.2:1) 3 parts, plasticizer (palm oil and dioctyl phthalate, the weight ratio of the two is 1:0.1) 10 parts, heat stabilizer stearic acid 2 parts, antioxidant 10100.2 parts 1. Lubricant Polyethylene wax 5 parts are uniformly mixed in a high-speed mixer, and then granulated by a plastic granulator at 180 ° C, and then injected and foamed. It can also be directly injected and foamed by an injection molding machine.

[0048] The perf...

Embodiment 3

[0050] The desulfurized gypsum was roasted at 500°C for 5 hours, and after cooling, it was pulverized and finely ground through a 300-mesh sieve. Use composite surface modifier (silane coupling agent and aluminate coupling agent, the weight ratio of the two is 1:10) to carry out surface modification treatment on the above-mentioned desulfurized gypsum powder, the weight ratio of desulfurized gypsum and composite modifier is 100:1.5. 100 parts of polyethylene, 100 parts of surface-modified phosphogypsum, composite foaming agent (azodicarbonamide (AC), zinc oxide (ZnO) and sodium bicarbonate (NaHCO 3 ) 1:0.1:0.3) 4 parts, plasticizer (epoxidized soybean oil and diisooctyl phthalate, the weight ratio of the two is 1:10) 5 parts, heat stabilizer lauric acid 0.5 parts, antioxidant 10760.5 parts and 0.2 parts of lubricant paraffin were uniformly mixed in a high-speed mixer, granulated by a plastic granulator at 200°C, and then injected and foamed. It can also be directly injected ...

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Abstract

The invention discloses a method for preparing a light general plastic composite material by adding bulk industrial solid wastes, and belongs to the field of preparation of chemical materials. The method comprise the following steps: with the bulk industrial solid wastes and general plastic as main raw materials, performing surface modification on the bulk industrial solid wastes to improve compatibility with the general plastic, improving the mobility and processing performance of the composite material by using a compound plasticizer, and under the combined action of an appropriate amount of a foaming agent and auxiliary agent, mixing, granulating and forming to prepare the light general plastic composite material added with the bulk industrial solid wastes. The method is simple and convenient in process and low in cost; the light general plastic composite material is light in weight, high in strength and high in added value; the light general plastic composite material prepared by the method has the characteristics of high filling amount of the industrial solid wastes, low density, good mechanical properties, strong impact resistance and the like, has excellent buffering and damping, sound-insulating and heat-insulating, insulating, corrosion-resistant and mold-resistant performances and the like; light environmentally friendly building materials and engineering products made of the light general plastic composite material can be widely applied to construction, chemical industry, metallurgy, transportation and other fields.

Description

technical field [0001] The invention relates to a method for preparing lightweight general-purpose plastic composite materials by adding bulk industrial solid waste such as fly ash and industrial gypsum, and belongs to the technical field of chemical material preparation. Background technique [0002] General-purpose plastics are collectively referred to as polyvinyl chloride, polyethylene, polypropylene, polystyrene, and ABS. The output and consumption of general-purpose plastics account for more than 80% of all plastics. It is a commonly used plastic with large output, wide application, good molding performance, and relatively low price. Through foaming treatment, the density of general-purpose plastics can be reduced to become a lightweight material. It has the characteristics of shock absorption, heat insulation, sound insulation, high specific strength, insulation and anti-corrosion. It is widely used in industry, agriculture, transportation, military and aerospace indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/06C08L23/06C08L25/06C08L55/02C08K13/06C08K9/04C08K3/00C08K9/06C08K3/30C08K3/26C08J9/08C08J9/10
CPCC08J9/08C08J9/103C08J2323/06C08J2323/12C08J2325/06C08J2327/06C08J2355/02C08L23/06C08L23/12C08L25/06C08L27/06C08L55/02C08L2203/14C08L2205/02C08L2205/03C08L91/00C08K13/08C08K11/005C08K9/04C08K5/12C08K5/09C08K13/06C08K2003/3045C08K5/1345C08L91/06C08K2003/265C08K5/098
Inventor 梁吉向兰陈浩远
Owner TSINGHUA UNIV
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