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Polyether ester type thermoplastic polyurethane elastomer foamed beads and preparation method thereof

A technology of thermoplastic polyurethane and foamed beads, which is applied in the field of polyether ester thermoplastic polyurethane elastomer foamed beads and its preparation, can solve the problems of poor strength, high cost, non-wear resistance, etc., and achieve the expansion of application range, The effect of high tensile strength and overcoming high cost

Inactive Publication Date: 2020-03-27
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, ETPU on the market is mainly classified into polyester type and polyether type according to raw materials. Polyester type has high strength, wear resistance, and low cost, but its performance in hydrolysis resistance, cold resistance, and mold resistance is poor, and its application field is narrow; while The polyether type is resistant to hydrolysis and low temperature, but its strength is poor, it is not wear-resistant, and its cost is high, so it cannot further expand its application field

Method used

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  • Polyether ester type thermoplastic polyurethane elastomer foamed beads and preparation method thereof
  • Polyether ester type thermoplastic polyurethane elastomer foamed beads and preparation method thereof
  • Polyether ester type thermoplastic polyurethane elastomer foamed beads and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. 50 parts by mass of polyether ester polyol (PEM-molecular weight 1000), 30 parts by mass of MDI, 10 parts by mass of 1,4-butanediol, 1 part by mass of antioxidant 126, 0.5 parts by mass of cell regulator poly Tetrafluoroethylene and 0.1 parts of the catalyst bismuth octadecanoate are accurately measured and injected into the twin-screw extruder through the pouring machine, and the temperature of the screw temperature zone is well controlled so that the TPU polymer melt and the small molecule additives are evenly mixed to obtain a homogeneous system After the melt passes through the die, it is pelletized underwater, dehydrated by a vibrating screen and dried to obtain transparent particles. Among them, the die temperature of the twin-screw extruder is 190°C, the melt pump pressure is 5MPa, the water temperature is 30°C, and the speed of the pelletizer is 3000r / min;

[0029] 2. Add the particles prepared above into the supercritical autoclave after accurate measurement...

Embodiment 2

[0031] 1. 50 parts by mass of polyether ester polyol (PEM-molecular weight 1000), 30 parts by mass of MDI, 10 parts by mass of 1,4-butanediol, 1 part by mass of antioxidant 126, 0.5 parts by mass of cell regulator poly Tetrafluoroethylene and 0.1 parts of the catalyst bismuth octadecanoate are accurately measured and injected into the twin-screw extruder through the pouring machine, and the temperature of the screw temperature zone is well controlled so that the TPU polymer melt and the small molecule additives are evenly mixed to obtain a homogeneous system After the melt passes through the die, it is pelletized underwater, dehydrated by a vibrating screen and dried to obtain transparent particles. Among them, the die temperature of the twin-screw extruder is 190°C, the melt pump pressure is 5MPa, the water temperature is 30°C, and the speed of the pelletizer is 3000r / min;

[0032] 2. Add the above-mentioned particles to the supercritical autoclave after accurate measurement,...

Embodiment 3

[0034] 1. 50 parts by mass of polyether ester polyol (PEM-molecular weight 1000), 30 parts by mass of MDI, 10 parts by mass of 1,4-butanediol, 1 part by mass of antioxidant 126, 0.5 parts by mass of cell regulator poly Tetrafluoroethylene and 0.1 parts of the catalyst bismuth octadecanoate are accurately measured and injected into the twin-screw extruder through the pouring machine, and the temperature of the screw temperature zone is well controlled so that the TPU polymer melt and the small molecule additives are evenly mixed to obtain a homogeneous system After the melt passes through the die, it is pelletized underwater, dehydrated by a vibrating screen and dried to obtain transparent particles. Among them, the die temperature of the twin-screw extruder is 190°C, the melt pump pressure is 5Mpa, the water temperature is 30°C, and the speed of the pelletizer is 3000r / min;

[0035] 2. Add the above-mentioned particles to the supercritical autoclave after accurate measurement,...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to polyether ester type thermoplastic polyurethane elastomer foamed beads and a preparation method thereof. According to the polyether ester type thermoplastic polyurethane elastomer foamed beads, a polyether polyol, a diisocyanate, a chain extender, an antioxidant, a foam stabilizer and a catalyst areadopted as raw materials to prepare a polyether ester type thermoplastic polyurethane elastomer, and the polyether ester type thermoplastic polyurethane elastomer foamed beads are further prepared through a kettle pressure foaming process. According to the preparation method, the low-molecular-weight polyether polyol is used for replacing a small-molecular dihydric alcohol to react with adipic acid, and a polyether chain segment structure is introduced into a main chain of the polyester polyol through an advanced alkyd condensation process, so that a brand-new polyether ester polyol is synthesized; the finished product has the characteristics of high tensile strength and good wear resistance of polyester type ETPU, and also has the advantages of hydrolysis resistance and good resilience of polyether type ETPU, so that the ETPU application range of is greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyether ester type thermoplastic polyurethane elastomer foaming bead and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a kind of special polymer material with excellent performance and wide application range, whose performance and processing technology are between plastic and rubber. [0003] Foam materials prepared with TPU as the matrix are widely used in various industries due to their light weight, breathability, environmental protection, and high resilience. At present, most foamed TPUs are foamed by chemical foaming agents, which will not decompose for a long time while causing environmental pollution. Supercritical physical foaming technology has become an international research hotspot due to its advantages of environmental protection and high efficiency. The expanded particles (ETPU) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08J9/12C08J9/18C08L75/06
CPCC08G18/4252C08G18/664C08G18/7671C08J9/122C08J9/18C08J2203/06C08J2203/08C08J2375/06
Inventor 刘凯良陈淑海张宁王丹王真
Owner SHANDONG INOV POLYURETHANE
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