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Modified bio-based nylon 56 material as well as preparation method and application thereof

A bio-based nylon and modification technology is applied in the field of modified bio-based nylon 56 materials and its preparation, which can solve the problems of large smoke, inability to have both thermal conductivity and toughness at the same time, and achieve high thermal conductivity, low smoke, and added small amount of effect

Inactive Publication Date: 2020-04-14
会通新材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, it is necessary for the present invention to provide a modified bio-based nylon 56 material and its preparation method and application. PA56 synthesized with pentamethylenediamine as a base resin is prepared by optimizing the formula system. Modified nylon material with high thermal conductivity, superior flame retardant performance and good toughness, which solves the technical problems of large smoke, thermal conductivity and toughness in the existing nylon thermal conductivity and flame retardant modification

Method used

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  • Modified bio-based nylon 56 material as well as preparation method and application thereof
  • Modified bio-based nylon 56 material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the present embodiment, the modified bio-based nylon 56 material is composed of 60 parts of PA56 (molecular weight is 15,000, viscosity is 2.4), 0.3 part of lubricant (calcium stearate:PE wax mass ratio=1:1 composite), 1 Parts of antioxidant (antioxidant 1098:antioxidant 168 mass ratio = 1:1 compound), 15 parts of flame retardant OP1314 and 25 parts of thermal conductive filler alumina were prepared in parts by weight, and the total processing weight was 4kg.

[0029] Its preparation steps are as follows:

[0030] Dry PA56 at 100°C in a vacuum oven with a vacuum degree of 0.10MPa for 12 hours to fully remove the moisture;

[0031] Fully mix the dried PA56, antioxidant and lubricant to obtain a mixed material, add the mixed material, flame retardant and thermal conductive filler into the twin-screw extruder, wherein the mixed material is poured into the weight loss The main feeding hopper of the extruder, the flame retardant OP1314 is added to the weight-reducing sid...

Embodiment 2

[0036] In the present embodiment, the modified bio-based nylon 56 material consists of 70 parts of PA56 (molecular weight is 35,000, viscosity is 3.2), 1 part of lubricant ethylene bisstearamide EBS, 0.3 part of antioxidant Bruggemann H10, 15 parts of flame retardant melamine polyphosphate MCA-PP and 15 parts of thermal conductive filler boron nitride are prepared according to parts by weight, and the total processing weight is 4kg.

[0037] Its preparation steps are as follows:

[0038] Dry PA56 in a vacuum oven at 120°C with a vacuum of 0.088MPa for 12 hours to fully remove the moisture;

[0039] Fully mix the dried PA56, antioxidant and lubricant to obtain a mixed material, add the mixed material, flame retardant and thermal conductive filler into the twin-screw extruder, wherein the mixed material is poured into the weight loss The main feeding hopper of the extruder, the flame retardant melamine polyphosphate MCA-PP is added to the weight-reducing side feeding hopper 1 o...

Embodiment 3

[0044]In this example, the modified bio-based nylon 56 material consists of 62 parts of PA56 (molecular weight is 30,000, viscosity is 2.7), 0.5 part of lubricant silicone masterbatch, 0.5 part of antioxidant N,N'-bis(2, 2,6,6-tetramethyl-4-piperidinyl)-1,3-phthalamide (NYLOSTAB S-EED), 18 parts of flame retardant magnesium hydroxide and 20 parts of thermally conductive filler silicon carbide in parts by weight Prepared, the total processing weight is 4kg.

[0045] Its preparation steps are as follows:

[0046] Dry PA56 at 110°C in a vacuum oven with a vacuum degree of 0.09MPa for 12 hours to fully remove the moisture;

[0047] Fully mix the dried PA56, antioxidant and lubricant to obtain a mixed material, add the mixed material, flame retardant and thermal conductive filler into the twin-screw extruder, wherein the mixed material is poured into the weight loss The main feeding hopper of the extruder, the flame retardant melamine polyphosphate MCA-PP is added to the weight-r...

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Abstract

The invention discloses a modified bio-based nylon 56 material as well as a preparation method and application thereof. The modified bio-based nylon 56 material is prepared from 55-70 parts by weightof PA56, 0.3-1 part by weight of an antioxidant, 0.3-1 part by weight of a lubricant, 15-20 parts by weight of a flame retardant and 15-25 parts by weight of a heat-conducting filler, wherein the PA56is formed by polycondensation of pentamethylene diamine and adipic acid, the relative viscosity of the PA56 is between 2.4 and 3.2, and the molecular weight of the PA56 is between 15,000 and 35,000.According to the invention, the PA56 synthesized by taking the pentamethylene diamine as a raw material is used as matrix resin, and a formula system is optimized, so that the prepared modified bio-based nylon 56 material is high in heat conductivity coefficient, excellent in flame retardant property and excellent in toughness, and is particularly suitable for high-temperature and high-pressure environments such as LED brackets, shells, sockets and switches.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to a modified bio-based nylon 56 material and its preparation method and application. Background technique [0002] Nylon (polyamide) is currently the most widely used thermoplastic engineering plastic at home and abroad. It has excellent properties such as toughness, wear resistance, impact resistance, fatigue resistance, corrosion resistance, and oil resistance. It is widely used in auto parts, electronic appliances, etc. , machinery and other industries. [0003] Among nylon chemical products, nylon 66 (referred to as PA66) is a high-strength, temperature-resistant, and stable variety. It is a product formed by polycondensation of adipic acid and hexamethylenediamine. Its melting point can reach 260 ° C, but Since hexamethylenediamine, the raw material for the synthesis of PA66, has not made breakthroughs in China, and most of the technologies are blocked...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L23/06C08L83/04C08K13/02C08K3/22C08K5/098C08K3/38C08K3/34C08K3/04
CPCC08K3/38C08K13/02C08K2003/2227C08K2003/385C08L77/06C08L2201/02C08L2203/20C08L23/06C08K3/22C08K5/098C08L83/04C08K3/34C08K3/04
Inventor 任大伟官冰宋剑峰陈鹏李荣群
Owner 会通新材料(上海)有限公司