Nylon-coated thermoplastic elastomer

A thermoplastic elastomer and coating technology, which is applied in the field of nylon coated thermoplastic elastomer, can solve the problems of general coating performance, general shock absorption effect, sticky hands, etc., and achieve improved hand feeling, shock absorption performance and good shape recovery ability , good toughness and hand feeling effect

Inactive Publication Date: 2022-02-11
GUANGDONG KEYUE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Maleic anhydride can react with nylon under high temperature conditions. Many products in the market generally add a large amount of maleic anhydride graft copolymer to the material to achieve the purpose of coating. The maleic anhydride graft copolymer product has a strong smell. Too much leads to a strong product odor; and maleic anhydride and nylon amino need to react quickly at a high temperature above 230°C without a catalyst. The processing temperature is high, and the hot melt material loses a lot of heat during the flow of the mold. During the injection molding process In the middle, the place where the distance from the gate is close to the gate is covered well, and the place where the distance is far away is average or the covering force is not enough, and this kind of product is sticky
Now there are products using polyurethane coated nylon on the market, but the coating performance is average, and the release performance is poor, and the shock absorption effect is average

Method used

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  • Nylon-coated thermoplastic elastomer
  • Nylon-coated thermoplastic elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The composite adhesion enhancer is formed by mixing the main agent and the synergistic auxiliary agent according to a weight ratio of 1:5, and the main agent comprises the following steps:

[0025] Step S1. Add 1,5-pentanediamine to absolute ethanol, stir at a constant speed for 15 minutes, then add sebacic acid, continue to stir and react for 36 hours, slowly crystallize during the reaction, filter and wash with suction, collect crystals, and store at 65°C Vacuum drying to obtain an intermediate, controlling the molar ratio of 1,5-pentanediamine and sebacic acid to be 1:1;

[0026] Step S2: Add hexamethylenediamine adipate and intermediates into a reaction kettle equipped with deionized water, stir at a constant speed and add caprolactam, pass in nitrogen to exhaust the air, heat up to 240°C, and maintain the pressure in the reaction kettle at 1.6 MPa, keep warm and react for 2 hours to prepare the main agent, control the molar ratio of hexamethylene adipate and caprol...

Embodiment 2

[0031] The composite adhesion enhancer is formed by mixing the main agent and the synergistic auxiliary agent according to a weight ratio of 1:5, and the main agent comprises the following steps:

[0032] Step S1: Add 1,5-pentanediamine to absolute ethanol, stir at a constant speed for 15 minutes, then add sebacic acid, continue to stir and react for 36 hours, slowly crystallize during the reaction, filter and wash with suction, collect crystals, and store at 65°C Vacuum drying to obtain an intermediate, controlling the molar ratio of 1,5-pentanediamine and sebacic acid to be 1:1;

[0033]Step S2: Add hexamethylenediamine adipate and intermediates into a reaction kettle equipped with deionized water, stir at a constant speed and add caprolactam, pass in nitrogen to exhaust the air, heat up to 240°C, and maintain the pressure in the reaction kettle at 1.6 MPa, keep warm and react for 2 hours to prepare the main agent, control the molar ratio of hexamethylene adipate and caprola...

Embodiment 3

[0038] The composite adhesion enhancer is formed by mixing the main agent and the synergistic auxiliary agent according to a weight ratio of 1:5, and the main agent comprises the following steps:

[0039] Step S1: Add 1,5-pentanediamine to absolute ethanol, stir at a constant speed for 15 minutes, then add sebacic acid, continue to stir and react for 36 hours, slowly crystallize during the reaction, filter and wash with suction, collect crystals, and store at 65°C Vacuum drying to obtain an intermediate, controlling the molar ratio of 1,5-pentanediamine and sebacic acid to be 1:1;

[0040] Step S2: Add hexamethylenediamine adipate and intermediates into a reaction kettle equipped with deionized water, stir at a constant speed and add caprolactam, pass in nitrogen to exhaust the air, heat up to 240°C, and maintain the pressure in the reaction kettle at 1.6 MPa, keep warm and react for 2 hours to prepare the main agent. Control the molar ratio of hexamethylene adipate and caprol...

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Abstract

The invention relates to a nylon-coated thermoplastic elastomer, which is prepared from the following raw materials in parts by weight: 10 to 20 parts of styrene-ethylene / butylene / styrene-styrene copolymer, 5 to 10 parts of a plasticizer, 10 to 15 parts of a nylon elastomer, 12 to 18 parts of a maleic anhydride graft, 3 to 10 parts of calcium carbonate and 10 to 15 parts of a composite bonding enhancer, the composite bonding enhancer is formed by mixing a main agent and a synergistic aid according to the weight ratio of 1: 5; as a thermoplastic elastomer, the nylon-coated thermoplastic elastomer has good toughness and hand feeling, the copolymer is adopted as a base material, and compared with a common SEBS material, the styrene-ethylene / butylene / styrene-styrene copolymer has damping performance and flowing performance, has better compatibility with a polar material and has better wettability to nylon plastic, and the nylon elastomer is added, and the nylon elastomer a filler can meet the wettability of the material and improve the coating capacity.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a nylon-coated thermoplastic elastomer. Background technique [0002] As a polymer material with good performance, nylon has been applied to various products and electric tools. As a rubber product, thermoplastic elastomer has good shock absorption effect and skin contact feeling. Can effectively reduce the external force. Maleic anhydride can react with nylon under high temperature conditions. Many products in the market generally add a large amount of maleic anhydride graft copolymer to the material to achieve the purpose of coating. The maleic anhydride graft copolymer product has a strong smell. Too much leads to a strong product odor; and maleic anhydride and nylon amino need to react quickly at a high temperature above 230°C without a catalyst. The processing temperature is high, and the hot melt material loses a lot of heat during the flow of the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L53/02C08L77/06C08L75/06C08L51/06C08L91/00C08K9/04C08K9/02C08K3/16C08K3/26
CPCC08L77/00C08L53/025C08L51/06C08L2207/04C08L2201/12C08K2003/265C08L77/06C08L75/06C08L91/00C08K9/08C08K9/02C08K3/16C08K3/26
Inventor 李善良梁耀志
Owner GUANGDONG KEYUE NEW MATERIAL CO LTD
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