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Method for preparing low-odor thermoplastic elastomer composition

A thermoplastic elastomer, low odor technology, applied in the production of bulk chemicals, etc., can solve problems such as difficulty in achieving the best effect, and achieve the effect of being conducive to popularization and application, low production cost and good performance

Inactive Publication Date: 2018-11-02
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, this method of simply relying on deodorants is often difficult to achieve the best results

Method used

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  • Method for preparing low-odor thermoplastic elastomer composition
  • Method for preparing low-odor thermoplastic elastomer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 50kg of ethylene / hexene-1 copolymer (LG Chemical LC175X, melt flow rate 1.1 g / 10min, density 0.870g / cm 3), 40kg of filler oil (SUNPAR2280, American Sun), 25g of antioxidant 1010, 50g of antioxidant 168, 500g of medical stone (particle size 2500 mesh), 500g of zinc ricinoleate, after being fully mixed and absorbed by stirring, A twin-screw extruder with an L / D ratio of 48:1 was added, the feeding rate was 50 g / min, and the screw speed was 100 rpm; supercritical carbon dioxide fluid was added to the twin-screw extruder from the second heating zone. Extruder, the mass of supercritical carbon dioxide fluid is 20% of the mass of polyethylene, and the feeding rate is 10 g / min. The twin-screw extruder is divided into 10 heating zones, of which the temperature of the first heating zone is 160°C, and the temperature of the other heating zones is 130°C to 180°C. Vacuum devolatilization in the 8th zone, extrude the pelletized strands and cut into pellets by water cooling to...

Embodiment 2

[0042] Weigh 50kg of ethylene / octene-1 copolymer (Dow Chemical ENGAGE 8440, melt flow rate 1.6 g / 10min, density 0.897g / cm 3 ), 30kg of filler oil (SUNPAR2280, American Sun), 50g of Antioxidant 1010, 100g of Antioxidant 168, 1500g of Maifan Stone (2500 mesh size), 250g of Zinc Ricinoleate, fully mixed and absorbed by stirring, A twin-screw extruder with an L / D ratio of 48:1 was added, the feeding rate was 50 g / min, and the screw speed was 100 rpm; supercritical carbon dioxide fluid was added to the twin-screw extruder from the second heating zone. Extruder, the mass of supercritical carbon dioxide fluid is 10% of the mass of polyethylene, and the addition rate is 5g / min. The twin-screw extruder is divided into 10 heating zones, of which the temperature of the first heating zone is 160°C, and the temperature of the other heating zones is 130°C to 180°C. Vacuum and devolatilize in the 8th heating zone, extrude the pelletized strands, and cut into pellets by water cooling to obta...

Embodiment 3

[0044] Weigh 30kg of ethylene / octene-1 copolymer (Dow ENGAGE 8150, melt flow rate, 0.5g / 10min, density 0.868g / cm 3 ), 45kg of filler oil (SUNPAR2280, American Sun), 75g of antioxidant 1076, 100g of antioxidant 168, 2500g of medical stone (particle size 2500 mesh), 350g of zinc ricinoleate, after stirring and mixing, add A twin-screw extruder with an L / D ratio of 48:1, a feed rate of 50 g / min, and a screw speed of 100 rpm; supercritical carbon dioxide fluid is added to the extruder from the second heating zone of the twin-screw extruder. Out of the machine, the mass of supercritical carbon dioxide fluid is 30% of the mass of polyethylene, and the addition rate is 15g / min. The twin-screw extruder is divided into 10 heating zones, of which the temperature of the first heating zone is 160°C, and the temperature of the other heating zones is 130°C to 180°C. Vacuum and devolatilize in the 8th heating zone, extrude the pelletized strands, and cut into pellets by water cooling to obt...

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Abstract

The invention discloses a method for preparing a low-odor thermoplastic elastomer composition and belongs to the technical field of materials. The composition at least comprises 100 parts of thermoplastic elastomer, 30-150 parts of filling oil, 0.05-0.15 part of a primary antioxidant, 0.1-0.3 part of an auxiliary antioxidant, 1.0-5.0 parts of a deodorant and 0.1-1.0 part of an odor chelating agent. By using supercritical carbon dioxide assisted extrusion, heat and oxygen degradation of the polyethylene in the extrusion process can be effectively inhibited, dissolution of small molecule volatiles is greatly accelerated, and the small molecule volatiles are removed in front of an extruder mouth model in a pressure relief extraction manner. The method disclosed by the invention is simple in process, wide in application range, low in production cost and favorable for popularization and application.

Description

technical field [0001] The present invention relates to a preparation method for a low odor thermoplastic elastomer composition. Background technique [0002] Thermoplastic Elastomer (TPE) means that it has good properties of vulcanized rubber (ie elasticity) at room temperature, and has the melt fluidity and reusability of thermoplastic engineering plastics at high temperature. It can be plasticized and deformed and still maintain its rubbery shape. elastic polymer materials. It can also directly use the traditional processing methods of plastics to manufacture finished products with faster processing methods than traditional vulcanized rubber, such as injection molding, extrusion molding, blow molding and calendering. And it has the advantages of light weight (low density), environmental protection (recyclable, non-toxic burning), long service life (more than 5 to 10 times that of traditional rubber), large processing variability, and low total product cost. In recent ye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L91/00C08K13/02C08K5/134C08K5/526C08K3/34C08K5/098C08K5/3492C08K13/04C08K7/26C08K5/527B29B9/06B29C47/92B29C48/92
CPCB29B9/06C08K2201/003C08L23/0815C08L91/00C08K13/02C08K5/1345C08K5/526C08K3/34C08K5/098C08L23/08C08K5/34924C08K5/527C08K13/04C08K7/26Y02P20/54
Inventor 左胜武王晶袁小亮邱敦瑞徐振明傅勇
Owner SINOPEC YANGZI PETROCHEM
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