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A kind of autoclave type preparation method of thermoplastic polyester elastomer foamed particles

A technology of thermoplastic polyester and expanded particles, which is applied in the direction of coating, etc., and can solve the problems of increasing the risk of degradation of polymer resin materials

Active Publication Date: 2022-01-28
CHANGZHOU SHUNXIANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extrusion undoubtedly makes the resin undergo a high-temperature process, which will increase the risk of degradation of polymer resin materials

Method used

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  • A kind of autoclave type preparation method of thermoplastic polyester elastomer foamed particles
  • A kind of autoclave type preparation method of thermoplastic polyester elastomer foamed particles
  • A kind of autoclave type preparation method of thermoplastic polyester elastomer foamed particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 100 parts by mass of powdered thermoplastic polyester elastomer (Korean SK G140D, 100 mesh), 18 parts by mass of polyamide 12 powder (Evonik Degussa 1301 (powder)), 2 parts by mass of oxidation Aluminum powder and 3 parts by mass of calcium carbonate powder are fully mixed in a high-speed mixer, the speed of the high-speed mixer is 200 rpm, the mixing time is 8 minutes, and the mixing temperature is controlled below 50°C;

[0025] (2) At room temperature (25°C, the same below), fully disperse 10 parts by mass of mineral oil (Zhonghai Nanlian, Industrial Grade No. 46) in 30 parts by mass of ethanol to obtain a spray liquid,

[0026] (3) After the mixture obtained in step (1) is evenly sprayed with the spray liquid obtained in step (2), it is granulated by a disc granulator. Spherical particles with a diameter of 5 mm,

[0027] (4) The granule that step (3) obtains, the water of 160 mass parts, the surfactant sodium dodecylbenzene sulfonate of 2.5 mass parts join in ...

Embodiment 2

[0033] "10 mass parts of mineral oil" in step (2) is revised to "6 mass parts of mineral oil", "30 mass parts of ethanol" is revised to "18 mass parts of ethanol", and all the other operations are the same as in the embodiment 1. After heating and foaming in the reactor, the resin remains in granular form.

[0034] After testing, the foaming density of the foamed particles obtained in Example 2 is 0.42g / cm 3 , the foamed particles are processed and formed by steam forming equipment to obtain a TPEE foamed sheet with a thickness of 2cm (the mold is a concave-convex plate with a depth of 2cm, the molding pressure is 0.25MPa, the molding time is 5 minutes, and the mold peak is 20mm), demoulding After placing it at room temperature for 24 hours, test it with reference to the national standard GB / T6670-2008: the rebound rate of the falling ball reaches 65%.

Embodiment 3

[0036] "10 mass parts of mineral oil" in step (2) is revised to "3 mass parts of mineral oil", "30 mass parts of ethanol" is revised to "9 mass parts of ethanol", and all the other operations are the same as in the embodiment 1. After heating and foaming in the reactor, the resin remains in granular form.

[0037] After testing, the expanded density of the expanded particles obtained in Example 3 is 0.68g / cm 3 , the foamed particles are processed and formed by steam forming equipment to obtain a TPEE foamed sheet with a thickness of 2cm (the mold is a concave-convex plate with a depth of 2cm, the molding pressure is 0.25MPa, the molding time is 5 minutes, and the mold peak is 20mm), demoulding After placing it at room temperature for 24 hours, test it with reference to the national standard GB / T6670-2008: the rebound rate of the falling ball reaches 41%.

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Abstract

The invention belongs to the field of preparation of functional foaming materials, and particularly relates to a low-pressure kettle-type preparation method of thermoplastic polyester elastomer foaming particles. First, the initial materials are fully mixed, and then the liquid foaming agent is sprayed on the initial raw materials as a spray liquid. After the mixture is loaded, it is granulated by a granulator, and the obtained granules are first subjected to high-pressure heating and heat preservation treatment in a reactor, and then foamed at normal pressure and high temperature, and filtered after sufficient foaming to obtain foamed particles.

Description

technical field [0001] The invention belongs to the field of preparation of functional foaming materials, in particular to a low-pressure kettle-type preparation method of thermoplastic polyester elastomer foaming particles. Background technique [0002] Thermoplastic polyester elastomer (TPEE) is a linear block copolymer composed of polyester hard segment and polyether soft segment. The hard segment endows it with better high temperature resistance, strength, etc., and the soft segment endows the material with better elasticity, Low temperature resistance, etc., its excellent performance makes this material can be used in rail shock absorption, sports equipment, shoe materials and other fields. [0003] This type of material can be directly processed by thermoplastic polyester elastomer (TPEE) foamed particles. The foamed particles belong to the raw materials that have been foamed. obtained by foaming. For this type of foaming process, in order to make the foaming agent p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08L77/00C08K3/22C08K3/26C08J9/14B29B9/08B29B9/12B29B9/16
CPCC08J9/141C08J9/142C08J9/0061C08J9/0066B29B9/08B29B9/12B29B9/16C08J2203/14C08J2203/12C08J2367/00C08J2477/00C08K2003/2227C08K2003/265
Inventor 李迪顾飚董卫龙夏洋赵彦冰
Owner CHANGZHOU SHUNXIANG NEW MATERIAL TECH CO LTD
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