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Stone-plastic profile and preparation method thereof

A stone-plastic and profile technology, applied in the field of stone-plastic profiles and their preparation, can solve the problems of difficult recycling of waste residues, complex process, secondary pollution, etc., and achieve the goals of widening the scope of recycling, simple preparation methods, and ensuring uniformity Effect

Pending Publication Date: 2021-11-19
ZHEJIANG YASHA DECORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Dicyandiamide waste residue, one of the three kinds of industrial waste residue, is a waste residue that is difficult to recycle, and there are few reports about the industrial utilization method of dicyandiamide waste residue in the prior art
In the prior art, dicyandiamide waste residue is mostly used as the raw material for preparing calcium carbonate or calcium oxide, and the process is relatively complicated and easily causes secondary pollution
As the market demand for dicyandiamide increases, more and more dicyandiamide waste residues are produced. A large amount of dicyandiamide waste piles not only takes up a lot of open space, but also has a great impact on the environment.

Method used

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  • Stone-plastic profile and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] S1 Pretreatment of returned materials: the collected returned materials are crushed and screened for later use;

[0027] S2 Pretreatment of dicyandiamide waste residue: air-dry or heat-dry dicyandiamide waste residue until the water content is 5%~6%, and then sieve to obtain dicyandiamide waste residue powder with a particle size of 2000~3000 mesh;

[0028] S3 Removal of impurities: removing the dicyandiamide waste slag powder obtained in step S2 at a temperature of 350° C. in an oxygen-containing air flow, and the impurities include carbon black and nitrogen-containing compounds;

[0029] S4 Mixing of raw materials: Add polyvinyl chloride, recycled materials, dicyandiamide waste residue, acrylic resin, stabilizer, chlorinated polyethylene, polypropylene wax and stearic acid into the heat mixing tank in proportion to stir, and raise the temperature to As high as 110°C, then transfer the raw materials to the cold mixing tank to continue stirring, and stop stirring when t...

Embodiment 2

[0034] S1 Pretreatment of returned materials: the collected returned materials are crushed and screened for later use;

[0035] S2 Pretreatment of dicyandiamide waste residue: air-dry or heat-dry the dicyandiamide waste residue until the water content is 8%~10%, and then sieve to obtain dicyandiamide waste residue powder with a particle size of 2000~3000 mesh;

[0036] S3 Removal of impurities: removing the dicyandiamide waste slag powder obtained in step S2 at a temperature of 450° C. in an oxygen-containing air flow, and the impurities include carbon black and nitrogen-containing compounds;

[0037] S4 Mixing of raw materials: Add polyvinyl chloride, recycled materials, dicyandiamide waste residue, acrylic resin, stabilizer, chlorinated polyethylene, polypropylene wax and stearic acid into the heat mixing tank in proportion to stir, and raise the temperature to As high as 130°C, then transfer the raw materials to the cold mixing tank to continue stirring, and stop stirring w...

Embodiment 3

[0042] S1 Pretreatment of returned materials: the collected returned materials are crushed and screened for later use;

[0043] S2 Pretreatment of dicyandiamide waste residue: air-dry or heat-dry the dicyandiamide waste residue until the water content is 9%~10%, and then sieve to obtain dicyandiamide waste residue powder with a particle size of 2000~3000 mesh;

[0044] S3 Removal of impurities: removing the dicyandiamide waste slag powder obtained in step S2 at a temperature of 600° C. in an oxygen-containing air flow, and the impurities include carbon black and nitrogen-containing compounds;

[0045] S4 Mixing of raw materials: Add polyvinyl chloride, recycled materials, dicyandiamide waste residue, acrylic resin, stabilizer, chlorinated polyethylene, polypropylene wax and stearic acid into the heat mixing tank in proportion to stir, and raise the temperature to As high as 135°C, then transfer the raw materials to the cold mixing tank to continue stirring, and stop stirring w...

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Abstract

The invention discloses a stone-plastic profile, which is prepared from the following raw materials in parts by weight: 50 to 100 parts of polyvinyl chloride, 50 to 100 parts of recycled material, 200 to 400 parts of dicyandiamide waste residue, 4 to 8 parts of acrylic resin, 6 to 13 parts of stabilizer, 4 to 7 parts of chlorinated polyethylene, 2 to 4.5 parts of external lubricant and 2 to 4 parts of internal lubricant. The stone-plastic profile is prepared through the steps of S1, pretreatment of the recycled material, S2, pretreatment of the dicyandiamide waste residue, S3, removal of impurities, S4, mixing of the raw materials and S5, extrusion molding of the stone-plastic profile. According to the stone-plastic profile, the dicyandiamide waste residues are used for replacing calcium carbonate to prepare the stone-plastic profile, so that the preparation method is simple and convenient, the production cost of the stone-plastic profile is reduced, a new thought is provided for treatment and recycling of the dicyandiamide waste residues, environmental pollution is reduced, and land resource occupation is reduced.

Description

technical field [0001] The invention relates to the technical field of manufacturing building materials, in particular to a stone-plastic profile and a preparation method thereof. Background technique [0002] PVC stone-plastic profile is a high-quality new material, which has the characteristics of small color difference in large area, uniform appearance color pattern, good overall decoration effect, high strength, complete variety, bright color, small specific gravity, and reduced building load. However, most of the stone powder used in PVC stone plastic profiles is natural stone powder. Natural stone is a non-renewable resource, and a large amount of mining and use will inevitably cause resource shortage. In the long run, it is necessary to find a method for preparing stone-plastic profiles that can replace or reduce the amount of natural stone powder used. [0003] Dicyandiamide waste residue, one of the three kinds of industrial waste residues, is a waste residue that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L33/00C08L23/28C08K3/26
CPCC08L27/06C08K2003/265C08L2207/20C08L33/00C08L23/286C08K3/26
Inventor 丁欣欣王文广周东珊朱书荻彭伟
Owner ZHEJIANG YASHA DECORATION
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