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Thermoplastic composite elastomer material and preparation method thereof

An elastomer material and thermoplastic technology, applied in the field of thermoplastic composite elastomer materials and their preparation, can solve problems such as insufficient elasticity, difficulty, and loss of beneficial properties of materials, and achieve comprehensive performance improvement, excellent cold resistance, and excellent water resistance. Effect

Active Publication Date: 2019-03-12
SUZHOU HENGLI COMM MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, CN105255158A discloses a precursor of an elastomer composition with improved properties. The hardness, elasticity, and rheological properties of the elastomer material are superior to those of rubber or TPV alone, but this superiority is not obvious. The obtained elastomer The mechanical properties of the material cannot meet the high-strength and high-elasticity requirements of practical applications. The elasticity at room temperature is insufficient, and the elastic properties at low temperatures cannot be guaranteed. The composite material has undergone secondary cross-linking or multiple cross-linking. , the unvulcanized part of the cross-linked TPV is cross-linked again, the "sea-island" structure of TPV is destroyed, the plastic phase of the material is difficult to be compatible with more rubber phases, and the new "sea-island" structure is difficult formed, causing serious loss of beneficial properties of the material

Method used

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  • Thermoplastic composite elastomer material and preparation method thereof
  • Thermoplastic composite elastomer material and preparation method thereof
  • Thermoplastic composite elastomer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Prepare the thermoplastic composite elastomer material 1 through the following steps:

[0053] Step (1), weigh 30kg of nylon 11, 25kg of nylon 12, 45kg of carboxyl acrylate rubber, 0.5kg of anti-hydrolysis agent polycarbodiamide, 0.5kg of BASF's antioxidant B225, 1.8kg of lubricant silicone and 0.2kg of antioxidant 4,4'-bis(α,α-dimethylbenzyl)diphenylamine was put into the internal mixer, melted and blended at 190℃ for 5min, and then 2kg of vulcanization aid was added to the internal mixer Di-o-toluene guanidine, 1kg of vulcanizing agent hexamethylene dicarbamate was added after banburying for 2 minutes, and dynamic vulcanization was carried out for 20 minutes to obtain a polyamide / acrylate rubber dynamic vulcanizate;

[0054] In step (2), the polyamide / acrylate rubber dynamic vulcanizate obtained in step (1) and the thermoplastic polyurethane elastomer are mixed at a weight ratio of 7:3, and the above mixture is extruded by melt blending using a twin-screw extruder. Set th...

Embodiment 2

[0057] Prepare the thermoplastic composite elastomer material 2 through the following steps:

[0058] Step (1), weigh 25kg nylon 11, 25kg nylon 1212, 50kg carboxyl type acrylate rubber, 0.8kg anti-hydrolysis agent polycarbodiamide, 0.5kg BASF's antioxidant B225, 0.5kg Lianlong company Antioxidant 1035, 0.5kg silicone, 1.5kg sodium stearate and 0.8kg antioxidant 4,4'-bis(α,α-dimethylbenzyl)diphenylamine were put into the internal mixer at 190℃ Melt and blend for 5 minutes, then add 5 kg of vulcanization assistant di-o-toluidine to the internal mixer, add 10 kg of vulcanizing agent hexamethylene dicarbamate after banburying for 2 minutes, and carry out dynamic vulcanization for 20 minutes to obtain polyamide / Acrylic rubber dynamic vulcanizate;

[0059] In step (2), the polyamide / acrylate rubber dynamic vulcanizate obtained in step (1) is mixed with the thermoplastic polyurethane elastomer at a weight ratio of 5:5, and the above mixture is extruded by melt blending using a twin-scre...

Embodiment 3

[0062] Prepare the thermoplastic composite elastomer material 3 through the following steps:

[0063] Step (1), weigh 35kg of nylon 1010, 75kg of carboxyl type acrylic rubber, 1.6kg of anti-hydrolysis agent polycarbodiamide, 1kg of BASF's antioxidant B225, 1kg of Li'anlong's antioxidant 1035, 1.9 Kg of silicone, 1kg of sodium stearate and 0.5kg of antioxidant 4,4'-bis(α,α-dimethylbenzyl)diphenylamine were put into the internal mixer, melted and blended at 190℃ for 5min, then Add 10kg of the vulcanization assistant di-o-toluidine to the internal mixer, add 3kg of the vulcanizing agent hexamethylene dicarbamate after banburying for 2 minutes, and carry out dynamic vulcanization for 20 minutes to obtain a polyamide / acrylate rubber dynamic vulcanizate;

[0064] In step (2), the polyamide / acrylate rubber dynamic vulcanizate obtained in step (1) and the thermoplastic polyurethane elastomer are mixed at a weight ratio of 7:3, and the above mixture is extruded by melt blending using a twin...

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Abstract

The invention provides a thermoplastic composite elastomer material and a preparation method thereof. The thermoplastic composite elastomer material is prepared by mixing polyamide / acrylate rubber dynamic vulcanized rubber with thermoplastic polyurethane elastomer according to weight ratio of (3-9) to (1-7); compared with the polyamide / acrylate rubber dynamic vulcanized rubber and the thermoplastic polyurethane elastomer which are not mixed together, the thermoplastic composite elastomer material provided by the invention has significantly improved comprehensive performance, especially low temperature elastic property, low temperature tensile strength and low temperature brittleness property; at a low temperature of -35 DEG C, the low temperature tensile strength can reach 26MPa, the elongation can reach 402%, and the low temperature brittleness temperature is as low as 45 DEG C; the material also has excellent water resistance, long-term high temperature service performance, high temperature oil resistance, high elasticity and good reworkability; the materials such as wires and cables, sealing elements and hoses can make up for the technical gap in the application of the materialin the field of high-end technologies.

Description

Technical field [0001] The invention belongs to the field of elastomer composite materials, and particularly relates to a thermoplastic composite elastomer material and a preparation method thereof. Background technique [0002] In recent years, thermoplastic dynamic vulcanizates (TPV) materials have developed rapidly. Because of their high elasticity of rubber and excellent processing characteristics of thermoplastics, they are used in wires and cables, auto parts, various sealing materials, civil engineering, medical equipment It is widely used in other fields, especially in the high-end manufacturing field. The excellent heat resistance, oil resistance and high elasticity of TPV materials usually make it used to prepare products with high added value. [0003] The dynamic vulcanizate obtained by dynamic vulcanization of acrylic rubber (ACM) and polyamide (PA) is a new type of TPV material. Because the surface energy of PA is relatively close to that of ACM, there is enough betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L77/02C08L79/00C08L83/04C08L75/04C08K5/18C08K5/31
CPCC08L33/04C08L2201/08C08L2205/035C08L77/02C08L79/00C08L83/04C08L75/04C08K5/18C08K5/31
Inventor 郭清明石凯凯任小伟程晓松计瑶佳沈晓香
Owner SUZHOU HENGLI COMM MATERIAL
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