Unlock instant, AI-driven research and patent intelligence for your innovation.

Processing method of flame retardant plastic containing halide and antimony oxide

A technology of flame-retardant plastics and antimony oxides, which is applied in the field of industrial waste treatment, can solve the problems of large halide smoke, impact, and environmental pollution, and achieve huge social and economic benefits. The process is simple and the process is pollution-free Effect

Active Publication Date: 2015-05-13
JINGMEN GEM NEW MATERIAL
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have the following defects respectively: (1) metal antimony is a rare resource on the earth, and its price is expensive, and direct landfilling will lead to serious waste of antimony resources; (2) halides have a large amount of smoke during incineration and Release a large amount of toxic and corrosive gases, causing serious pollution to the environment; and (3) in the method of directly modifying flame-retardant plastics for reuse, the presence of flame retardants has a certain impact on plastic modification

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method of flame retardant plastic containing halide and antimony oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A processing method for flame-retardant plastics containing halides and antimony oxides, comprising the following steps:

[0022] (1) Cleaning and crushing

[0023] Take flame-retardant plastics containing halides and antimony oxides, wash them, and crush them to obtain flame-retardant plastic particles with a particle size of 10-100 μm;

[0024] (2) acid leaching reaction

[0025] Take the flame-retardant plastic particles described in step (1), add a sulfuric acid solution with a concentration of 60% to carry out acid leaching, the molar ratio of sulfuric acid to the antimony contained in the flame-retardant plastic particles is 1: 0.05, and the acid leaching temperature is 280 ℃, the acid leaching reaction time is 4 hours, and the acid leaching mixed product is obtained, and the hydrohalic acid is condensed and recovered during the acid leaching reaction, and the condensation temperature is 220~240 ℃, and the mixed solution containing the hydrohalic acid is obtained...

Embodiment 2

[0030] A processing method for flame-retardant plastics containing halides and antimony oxides, comprising the following steps:

[0031] (1) Cleaning and crushing: Take flame-retardant plastics containing halides and antimony oxides, wash, and crush to obtain flame-retardant plastic particles with a particle size of 10-100 μm;

[0032] (2) acid leaching reaction: get the flame retardant plastic granules described in step (1), add the sulfuric acid solution that concentration is 98% and carry out acid leaching, the ratio of the molar number of antimony contained in sulfuric acid and flame retardant plastic granules is 1: 0.2, the acid leaching temperature is 350°C, the acid leaching reaction time is 3 hours, and the acid leaching mixed product is obtained, and the hydrohalic acid is condensed and recovered during the acid leaching reaction, and the condensation temperature is 260~280°C, and the hydrohalic acid containing mixture;

[0033] (3) Recycling plastics: take the acid ...

Embodiment 3

[0037] A processing method for flame-retardant plastics containing halides and antimony oxides, comprising the following steps:

[0038] (1) Cleaning and crushing: Take flame-retardant plastics containing halides and antimony oxides, wash, and crush to obtain flame-retardant plastic particles with a particle size of 10-100 μm;

[0039] (2) acid leaching reaction: get the flame retardant plastic granule described in step (1), add the sulfuric acid solution that concentration is 80% and carry out acid leaching, the ratio of the molar number of antimony contained in the sulfuric acid and the flame retardant plastic granule is 1: 0.1, the acid leaching temperature is 320°C, the acid leaching reaction time is 3 hours, and the acid leaching mixed product is obtained, and the hydrohalic acid is condensed and recovered during the acid leaching reaction, and the condensation temperature is 250~260°C, and the hydrohalic acid containing Mixed solution, the mixed solution containing hydro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The present invention provides a processing method of flame retardant plastic containing halide and antimony oxide, comprising washing, crushing, adding sulfuric acid for leaching to obtain an acid leaching mixed product, recycling plastic, recycling antimony and recycling halogen acid. The method can change waste into treasure and comprehensively recycle the antimony, halogen and plastic in the flame retardant plastic, is simple in process and has no pollution, and has enormous social and economic benefits.

Description

technical field [0001] The invention relates to the treatment of industrial waste, in particular to a treatment method for flame-retardant plastics containing halides and antimony oxides. Background technique [0002] Halogen-antimony flame retardants formed by the combination of halides (chlorine and bromine) and antimony oxides (mainly antimony trioxide), as a traditional and mature additive flame retardant, because of its flame retardant The effect is obvious and the price is low, so it is widely used in the flame retardancy of plastics, especially the flame retardancy of electrical thermoplastics. [0003] As the flame-retardant plastics containing halides and antimony oxides used in the early stage have reached the end of their service life, and large-scale flame-retardant plastics are about to reach the end of their service life, more and more flame-retardant plastics are being eliminated as industrial waste. Therefore, the reprocessing of these flame-retardant plasti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/00C08J11/06B29B17/00B29B17/04C22B3/46C22B30/02C01B7/01C01B7/09
CPCY02P10/20Y02W30/52Y02W30/62
Inventor 王勤郭苗苗闫梨苏陶贵
Owner JINGMEN GEM NEW MATERIAL