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High-elasticity thermoplastic rubber and preparation method thereof

A technology of thermoplastic rubber and high elasticity, applied in the field of plastic and rubber products, can solve the problems of poor high temperature resistance and reduced ability of auto parts to recover deformation, and achieve the effect of improving elastic performance

Active Publication Date: 2021-09-07
佛山市湘聚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the applicant found in the course of practice that after the automobile parts made of highly elastic neoprene are placed at a high temperature of 70°C, the ability of the automobile parts to recover from deformation will be greatly reduced
This shows that the high-temperature resistance effect of high-elastic neoprene rubber is relatively poor at present, and some auto parts that have elastic performance requirements at high temperatures cannot be prepared by existing neoprene rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of high elasticity thermoplastic rubber, its preparation method comprises the following steps:

[0061] S1. Preparation of modified ceramics:

[0062] Mix 10kg of silicon nitride ceramic powder with a particle size range of 75-150µm and 30kg of alumina ceramic powder with a particle size of 75-150µm to obtain a ceramic material, add 8kg of linoleic acid to the ceramic material, and continue stirring until Linoleic acid is evenly mixed with ceramic materials to produce modified ceramics;

[0063] S2, 25kg polychloroprene, 10kg modified ceramics, 32kg polyurethane prepolymer, 4kg calcium stearate and 1kg defoamer BG-201 were evenly stirred to obtain a stirring material;

[0064]S3. Mix, extrude, and cool the mixing material to obtain thermoplastic rubber; wherein, the temperature of each zone of the extruder is as follows: 170°C in zone 1, 175°C in zone 2, 180°C in zone 3, 180°C in zone 4, and 180°C in zone 5 185°C, Zone 6 185°C.

Embodiment 2

[0066] A kind of high elasticity thermoplastic rubber, its preparation method comprises the following steps:

[0067] S1. Preparation of modified ceramics:

[0068] Stir 15kg of silicon nitride ceramic powder with a particle size range of 75-150µm and 40kg of alumina ceramic powder with a particle size range of 75-150µm to obtain a ceramic material, add 12kg of linoleic acid to the ceramic material, and continue stirring. Until the linoleic acid is evenly mixed with the ceramic material, the modified ceramic can be prepared;

[0069] S2, 35kg polychloroprene, 12.5kg modified ceramics, 42kg polyurethane prepolymer, 6kg zinc stearate and 1.5kg defoamer AKN-3801 were stirred evenly to obtain a stirring material;

[0070] S3. Mix, extrude, and cool the mixing material to obtain thermoplastic rubber; wherein, the temperature of each zone of the extruder is as follows: Zone 1 is 175°C, Zone 2 is 180°C, Zone 3 is 185°C, Zone 4 is 185°C, Zone 5 190°C, zone 6 190°C.

Embodiment 3

[0072] A kind of high elasticity thermoplastic rubber, its preparation method comprises the following steps:

[0073] S1. Preparation of modified ceramics:

[0074] Mix 20kg of silicon nitride ceramic powder with a particle size range of 75-150µm and 50kg of alumina ceramic powder with a particle size of 75-150µm to obtain a ceramic material, add 16kg of linoleic acid to the ceramic material, and continue stirring until Linoleic acid is evenly mixed with ceramic materials to produce modified ceramics;

[0075] S2, 45kg polychloroprene, 15kg modified ceramics, 52kg polyurethane prepolymer, 8kg polyethylene wax and 2kg defoamer AKN-3801 were stirred evenly to obtain a stirring material;

[0076] S3. Mix, extrude, and cool the mixing material to obtain thermoplastic rubber; wherein, the temperature of each zone of the extruder is as follows: 180°C in zone 1, 180°C in zone 2, 185°C in zone 3, 185°C in zone 4, and 185°C in zone 5 190°C, zone 6 190°C.

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Abstract

The invention relates to the field of plastic rubber products, and particularly discloses high-elasticity thermoplastic rubber and a preparation method thereof. The high-elasticity thermoplastic rubber is prepared from the following raw materials: polychloroprene, a polyurethane prepolymer and modified ceramic prepared from silicon nitride ceramic powder, aluminum oxide ceramic powder and linoleic acid; the preparation method comprises the following steps: S1, uniformly stirring the polychloroprene, the modified ceramic, the polyurethane prepolymer, the lubricant and the defoaming agent to obtain a stirred material; S2, mixing, extruding and cooling the stirred material to obtain the thermoplastic rubber. The high-elasticity thermoplastic rubber provided by the invention can still keep better elastic property after standing in a high-temperature environment of 70 DEG C, and can be used in the high-temperature environment of 70 DEG C.

Description

technical field [0001] The application relates to the field of plastic rubber products, more specifically, it relates to a high elastic thermoplastic rubber and its preparation method. Background technique [0002] Neoprene rubber, also known as chloroprene rubber and Xinping rubber, is a synthetic rubber produced by polymerization of chloroprene as the main raw material. It has the characteristics of high elasticity and solvent resistance, and is currently widely used in the manufacture of auto parts Wait. [0003] In recent years, with the continuous development of the economy, the demand for highly elastic neoprene in industrial products and auto parts is increasing. However, the applicant found in the course of practice that after placing the auto parts made of highly elastic chloroprene rubber at a high temperature of 70° C., the ability of the auto parts to recover from deformation will be greatly reduced. This shows that the high-temperature resistance effect of hig...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L11/00C08L93/00C08K3/34C08K3/22C08K9/04C08K3/26
CPCC08L75/04C08L2205/03C08L2201/08C08K2003/265C08K2003/2227C08K2201/005C08L11/00C08K3/34C08K3/22C08K9/04C08L93/00C08K3/26
Inventor 郭世林莫家永
Owner 佛山市湘聚新材料有限公司
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