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Waste plastic regeneration process

A technology of waste plastics and craftsmanship, applied in the field of waste plastics regeneration, can solve the problems of poor toughness, poor wear resistance, brittle waste plastic recycled materials, etc., and achieve the effect of good toughness

Inactive Publication Date: 2021-11-26
界首市云锋再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: the technical problem of waste and old plastic regenerated materials being brittle, poor in toughness and poor in wear resistance

Method used

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  • Waste plastic regeneration process
  • Waste plastic regeneration process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Modified castor oil is made through the following steps:

[0045] After mixing 0.1mol castor oil, 100mL tetrahydrofuran and 0.34mol succinic anhydride, add castor oil and 0.5% p-toluenesulfonic acid by mass, reflux reaction at 85°C for 12h under stirring, rotary evaporation under reduced pressure, and vacuum drying at 45°C , to obtain modified castor oil.

Embodiment 2

[0047] Modified castor oil is made through the following steps:

[0048] After mixing 0.1mol castor oil, 100mL tetrahydrofuran and 36mol succinic anhydride, add castor oil and 1.2% p-toluenesulfonic acid by mass, reflux reaction at 85°C for 12h under stirring, rotary evaporation under reduced pressure, and vacuum drying at 45°C. Modified castor oil was obtained.

Embodiment 3

[0050]Dihydroxy POSS is made by the following steps:

[0051] Add 120mL of isopropanol into a flask equipped with a condenser and a magnetic stirrer, add 0.14mol of phenyltrimethoxysilane, 4mg of deionized water and 0.1mol of flake sodium hydroxide in turn under stirring, stir well, and use an oil bath to Heat the reaction system to 72°C in a pot, reflux under nitrogen atmosphere for 6 hours, then stir and react for 18 hours at room temperature, remove the isopropanol from the mixed solution by rotary evaporation, and dry it in vacuum at 65°C for 12 hours to obtain octaphenyl POSS sodium salt ;Put 0.1mol octaphenyl POSS sodium salt into a three-necked flask, under nitrogen protection, add 150mL anhydrous tetrahydrofuran, stir well, add 0.2mol triethylamine, react in ice bath at 0°C for 1h, slowly add dropwise with a constant pressure funnel 0.23mol tetrahydrofuran solution of methyldichlorosilane, the dropping rate is 2 drops / second, react for 4h, then raise the temperature to...

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Abstract

The invention discloses a waste plastic regeneration process, which belongs to the technical field of waste plastic regeneration. The technology comprises the following steps that 1, waste plastic is smashed, sieved, soaked in alkali liquor, cleaned and dried, and waste plastic particles are obtained; and 2, the waste plastic particles and an auxiliary agent are uniformly stirred and mixed at 110-120 DEG C, and extrusion granulation is conducted to obtain the waste plastic regenerated plastic. The auxiliary agent is added in the waste plastic regeneration process, so that the technical problems of brittleness, poor toughness and poor wear resistance of the waste plastic regenerated material are solved, and the auxiliary agent is obtained through gradual reaction of modified castor oil, dihydroxyl POSS, carboxyl-containing binary isocyanate and hydroxyl-terminated polyether modified polydimethoxy siloxane, so that molecules contain a POSS structure, a straight-chain siloxane chain and a polyether chain, the auxiliary agent has excellent compatibility with waste plastics, and the toughness, strength and wear resistance of waste plastic particles are improved by adding the auxiliary agent.

Description

technical field [0001] The invention belongs to the technical field of recycling waste plastics, and in particular relates to a technology for recycling waste plastics. Background technique [0002] Plastic is a polymer material, it is difficult to decompose in nature after being discarded, and it will produce toxic gas during incineration, which will endanger human health. However, waste plastics are recyclable garbage. Remaking them into plastic granules as raw materials for plastics can be recycled and reduce the pollution of waste plastics to the environment. However, waste plastic recycled materials have the disadvantages of brittleness, poor toughness and poor wear resistance. [0003] For example, Chinese patent CN107746491 B discloses a method for regenerating composite flame-retardant materials from waste plastics, including the following steps: 1) waste plastics treatment; 2) material mixing: drying waste plastic particles, fly ash, rutile titanium White powder, ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L27/06C08L75/08C08G18/66C08G18/50C08G18/61C08G18/36B29B9/06B29B9/12B29B17/04B29B17/00B29K105/00
CPCC08L23/06C08L23/12C08L27/06C08G18/6696C08G18/5096C08G18/61C08G18/36B29B9/06B29B9/12B29B17/0412B29B17/00B29B2017/001B29B2017/0015B29K2105/0005C08L2207/20C08L75/08Y02W30/62Y02W30/52
Inventor 段伟段朋朋段志豪
Owner 界首市云锋再生资源有限公司
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