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Method for preparing high filling polyvinyl chloride or polyolefin composite material by employing industrial solid wastes

A polyvinyl chloride and composite material technology, which is applied in the field of chemical material preparation, can solve the problems that the mechanical properties of composite materials need to be improved, the mechanical properties of composite materials are not good, and the large-scale industrial application is limited, so as to achieve high added value of products and improved processing. Performance, low cost effect

Active Publication Date: 2013-09-25
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Looking at the work of predecessors, we can see that my country is still in its infancy in the preparation of composite materials from industrial solid waste, and its technical force is relatively weak. Most of the work focuses on the development of low-fill composite materials (the weight ratio of solid waste to resin is less than 50%), and a few Patent documents (CN102372880A, CN102344618A) reported high filling (the weight ratio of solid waste to resin is greater than 50%), but the mechanical properties of composite materials are not good or even there is no public test data
[0011] In short, although the predecessors have carried out some work on the preparation of composite materials from industrial solid waste, there are still problems such as small solid waste filling and the mechanical properties of composite materials need to be improved, which limits the large-scale industrial application of related technologies to a certain extent.

Method used

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  • Method for preparing high filling polyvinyl chloride or polyolefin composite material by employing industrial solid wastes
  • Method for preparing high filling polyvinyl chloride or polyolefin composite material by employing industrial solid wastes
  • Method for preparing high filling polyvinyl chloride or polyolefin composite material by employing industrial solid wastes

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Experimental program
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Effect test

Embodiment 1

[0041] The phosphogypsum was roasted at 800°C for 0.5 hours, cooled, crushed and finely ground through a 100-mesh sieve. The composite surface modifier (silane coupling agent and titanate coupling agent, the weight ratio of the two is 1:0.1) is used to modify the surface of the above phosphogypsum powder, and the mass ratio of phosphogypsum to composite modifier is 100:0.5. 100 parts of polyvinyl chloride, 500 parts of surface-modified phosphogypsum, 50 parts of plasticizer (palm oil and dioctyl phthalate, the weight ratio of the two is 1:0.1), heat stabilizer stearic acid 2 parts, 10100.2 parts of antioxidant, and 5 parts of lubricant polyethylene wax were uniformly mixed in a high-speed mixer, and then granulated by a plastic granulator at 170°C or directly injection-molded by an injection molding machine to make phosphogypsum filled with 80% PVC composite.

Embodiment 2

[0043] The desulfurized gypsum was roasted at 500°C for 5 hours, and after cooling, it was pulverized and finely ground through a 1000-mesh sieve. The surface modification treatment of the above-mentioned desulfurized gypsum powder is carried out by using a composite surface modifier (silane coupling agent and aluminate coupling agent, the weight ratio of which is 1:10). The mass ratio of desulfurized gypsum to composite modifier is 100:0.5. 100 parts of polyvinyl chloride, 500 parts of surface-modified phosphogypsum, 5 parts of plasticizer (epoxidized soybean oil and diisooctyl phthalate, the weight ratio of the two is 1:10), heat stabilizer 20 parts of lauric acid, 10765 parts of antioxidant, and 0.2 parts of lubricant paraffin are uniformly mixed in a high-speed mixer, and then granulated by a plastic granulator at 250 ° C or directly injection-molded by an injection molding machine to make high-filled polyethylene. composite material.

Embodiment 3

[0045] 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 dose ratio is 100:2. 100 parts of polypropylene, 100 parts of surface-modified fly ash, 25 parts of plasticizer (peanut oil and diallyl phthalate, the weight ratio of the two is 1:5), 10 parts of heat stabilizer isooctanoic acid 2 parts of antioxidant CA, 1 part of lubricant polystearic acid are evenly mixed in a high-speed mixer, granulated by a plastic granulator at 200 ℃ or directly injection molded by an injection molding machine to make a high-filling polypropylene compound Material.

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Abstract

The invention discloses a method for preparing a high filling polyvinyl chloride or polyolefin composite material by employing industrial solid wastes and belongs to the field of chemical materials. According to the method, the industrial solid wastes and polyvinyl chloride or polyolefin serve as main raw materials, the industrial solid wastes are subjected to surface modification, the compatibility between the industrial solid wastes and the polyvinyl chloride or polyolefin is improved, the liquidity and processability of the composite material is improved by utilizing a compound plastifier, and the composite material is subjected to mixing and pelleting under the coaction of a proper amount of aids, so that the high filling polyvinyl chloride or polyolefin composite material is prepared. The method is simple in process, low in cost and high in additional value of products. The composite material has the characteristics of high filling amount of industrial solid wastes, enough strength and toughness, environment friendliness, stable performance and the like and can be widely applied to preparing green building materials and advanced engineering products in various fields of national economy.

Description

technical field [0001] The invention relates to a method for preparing high-filled polyvinyl chloride or polyolefin composite materials by using bulk industrial solid waste (phosphogypsum, desulfurized gypsum, fly ash, metallurgical slag, calcium carbonate powder, etc.), belonging to the technical field of chemical material preparation . Background technique [0002] Since the reform and opening up, my country's coal power, metallurgy, inorganic chemical industry and other basic industries have made great progress. While making great contributions to the national economy, they have also produced a large amount of industrial solid waste, such as fly ash, desulfurized gypsum, phosphorus Gypsum, metallurgical slag, waste calcium carbonate stone powder, etc., these bulk industrial solid waste urgently need to find a way out through technological progress. [0003] Coal is the main energy source in my country, and its consumption is growing rapidly year by year. In 2012, it reach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L23/06C08L23/12C08L27/06C08K13/06C08K9/06C08K9/04C08K3/00C08K3/30C08K3/26C08K5/00C08K5/1515C08K5/12C08K5/09C08K5/098C08K5/01
Inventor 向兰梁吉
Owner TSINGHUA UNIV
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