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PPSU reclaimed material and preparation process thereof

A technology of recycled materials and nozzle materials, applied in the field of recycled plastics, can solve the problems affecting the reuse of PPSU recycled materials and the poor weather resistance of PPSU recycled materials, and achieve the effects of improving weather resistance, improving flow performance, and improving weather resistance.

Active Publication Date: 2021-09-24
日彩复合塑料(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the processing temperature of PPSU nozzle material is increased, although the air mark problem of PPSU recycled material has been solved, the problem of poor weather resistance of PPSU recycled material has occurred, which affects the reuse of PPSU recycled material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of PPSU regenerated material, its preparation process is as follows:

[0056] 0.5kg 3-(3-(tert-butyl)-4-hydroxyphenyl) octadecyl propionate, 1.2kg tris(2,4-di-tert-butylphenyl) phosphite, 0.5kg 2 '-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2.4kg 1,2,3,4-butane tetracarboxylic acid and 2, 2-Bis(hydroxymethyl)-1,3-propanediol and 3-hydroxy-2,2-dimethylpropanal, 1,2,2,6,6-pentamethyl-4-piperidinyl ester The polymer is added to 995.4kg of PPSU nozzle material, mixed evenly and sent to the extruder for kneading and extrusion, and finally the PPSU regenerated material is obtained by pelletizing machine; wherein, the screw speed in the extruder is 580rpm, and the extruder is equipped with 10 temperature setting zones, Zone 1: 325-335°C, Zone 2: 325-335°C, Zone 3: 320-330°C, Zone 4: 320-330°C, Zone 5: 310-320°C, Zone 6: 310-320°C, zone 7: 310-320°C, zone 8: 320-330°C, zone 9: 325-335°C, zone 10: 330-340°C, the temperature of the extruder head is...

Embodiment 2

[0059] A kind of PPSU regenerated material, its preparation process is as follows:

[0060] 1.0kg 3-(3-(tert-butyl)-4-hydroxyphenyl) octadecyl propanoate, 1.0kg tris(2,4-di-tert-butylphenyl) phosphite, 1.0kg 2 '-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2.0kg 1,2,3,4-butane tetracarboxylic acid and 2, 2-Bis(hydroxymethyl)-1,3-propanediol and 3-hydroxy-2,2-dimethylpropanal, 1,2,2,6,6-pentamethyl-4-piperidinyl ester The polymer is added to 995kgPPSU nozzle material, mixed evenly and sent to the extruder for kneading and extrusion, and finally the PPSU regenerated material is obtained by pelletizing machine; wherein, the screw speed in the extruder is 590rpm, and the extruder is equipped with 10 1 temperature setting zone, Zone 1: 330-340°C, Zone 2: 330-340°C, Zone 3: 325-335°C, Zone 4: 325-335°C, Zone 5: 315-325°C, Zone 6: 315 -325°C, zone 7: 315-325°C, zone 8: 325-335°C, zone 9: 330-340°C, zone 10: 335-345°C, the temperature of the extruder head is 345...

Embodiment 3

[0063] A kind of PPSU regenerated material, its preparation process is as follows:

[0064] 1.5kg 3-(3-(tert-butyl)-4-hydroxyphenyl) octadecyl propionate, 0.8kg tris(2,4-di-tert-butylphenyl) phosphite, 1.5kg 2 '-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 1.6kg 1,2,3,4-butane tetracarboxylic acid and 2, 2-Bis(hydroxymethyl)-1,3-propanediol and 3-hydroxy-2,2-dimethylpropanal, 1,2,2,6,6-pentamethyl-4-piperidinyl ester The polymer is added to 994.6kg of PPSU nozzle material, mixed evenly and sent to the extruder for kneading and extrusion, and finally the PPSU regenerated material is obtained by pelletizing machine; wherein, the screw speed in the extruder is 600rpm, and the extruder is equipped with 10 temperature setting zones, Zone 1: 335-345°C, Zone 2: 335-345°C, Zone 3: 330-340°C, Zone 4: 330-340°C, Zone 5: 320-330°C, Zone 6: 320-330°C, zone 7: 320-330°C, zone 8: 330-340°C, zone 9: 335-345°C, zone 10: 340-350°C, the temperature of the extruder head is...

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Abstract

The invention relates to the field of regenerated plastics, and particularly discloses a PPSU reclaimed material and a preparation process thereof. The PPSU reclaimed material is prepared by mixing a low-volatility hindered phenol antioxidant, a high-temperature-resistant phosphite ester antioxidant, a low-volatility benzotriazole ultraviolet light absorber, 1, 2, 3, 4-butanetetracarboxylic acid, 2,2-bis (hydroxymethyl)-1, 3-propylene glycol, 3-hydroxy-2, 2-dimethyl propionaldehyde, a polymer of 1, 2, 2, 6, 6-pentamethyl-4-piperidyl ester and a PPSU drainage opening material according to a certain proportion. The PPSU reclaimed material is free of gas marks in the surface and good in weather resistance, and the service life of the PPSU reclaimed material is prolonged.

Description

technical field [0001] This application relates to the field of recycled plastics, more specifically, it relates to a PPSU recycled material and its preparation process. Background technique [0002] PPSU is an amorphous thermoplastic that is highly transparent, highly hydrolytically stable, and can withstand repeated steam sterilization. Therefore, PPSU materials are often used in the production of baby bottles, medical device parts and other fields. [0003] Among them, in the processing and production of PPSU, it is inevitable to produce some outlet materials, that is, some products with substandard quality. In order to save resources and reduce carbon emissions, people usually reuse these nozzle materials. [0004] In the process of reusing the PPSU nozzle material, the inventor found that the PPSU regenerated material is prone to air marks. Therefore, it is necessary to increase the processing temperature of PPSU nozzle material to reduce the viscosity of PPSU nozzle...

Claims

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Application Information

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IPC IPC(8): C08L81/06C08L67/00C08L83/04C08K9/04C08K3/22C08K5/134C08K5/3492C08K5/526C08K5/523C08K5/3475
CPCC08L81/06C08L2201/08C08K2201/011C08K2003/222C08L67/00C08L83/04C08K9/04C08K3/22C08K5/1345C08K5/34924C08K5/526C08K5/523C08K5/3475Y02W30/62
Inventor 李嘉荣
Owner 日彩复合塑料(深圳)有限公司
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