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Light-weight, high-toughness and low-water-absorption-ratio ultra high molecular weight polyethylene/nylon 6 micro-foaming composite material and preparation method thereof

A technology of ultra-high molecular weight and composite materials, which is applied in the field of ultra-high molecular weight polyethylene/nylon 6 micro-foamed composite materials and its preparation, which can solve the problems of low water absorption, easy collapse of cells, and difficult processing, and achieve high impact The effect of strength and excellent rigidity-toughness balance

Inactive Publication Date: 2018-06-19
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the low strength of PA6 melt in the prior art, the cells are easy to collapse and rupture, and it is impossible to obtain uniform and fine cells. At the same time, PA6 and UHMWPE are extremely incompatible and difficult to process. The present invention provides a light, Ultra-high molecular weight polyethylene / nylon 6 micro-foaming composite material with high toughness and low water absorption and preparation method thereof

Method used

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  • Light-weight, high-toughness and low-water-absorption-ratio ultra high molecular weight polyethylene/nylon 6 micro-foaming composite material and preparation method thereof
  • Light-weight, high-toughness and low-water-absorption-ratio ultra high molecular weight polyethylene/nylon 6 micro-foaming composite material and preparation method thereof
  • Light-weight, high-toughness and low-water-absorption-ratio ultra high molecular weight polyethylene/nylon 6 micro-foaming composite material and preparation method thereof

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Effect test

Embodiment 1

[0030] In this embodiment, the ultra-high molecular weight polyethylene / nylon 6 micro-foaming composite material with light weight, high toughness and low water absorption is prepared from the following raw materials in parts by weight:

[0031]

[0032] Concrete preparation method comprises the following steps:

[0033] (1) Weigh 3 parts of silicon dioxide, add it into a 30mL solution reactor prepared with water:coupling agent KH550 according to the volume ratio of 90:10, stir and reflux at 70°C for 24h, cool down to room temperature, and then use high-speed Centrifuge in a centrifuge, and dry the product in a vacuum oven at 40°C for 24 hours to obtain coupling-treated silica;

[0034] (2) Add the silica and GMA that have been coupled in step (1) into the reactor at a weight ratio of 1:0.5, pass through nitrogen protection, stir and reflux at a constant temperature of 60°C for 24 hours, cool down to room temperature, and then use a high-speed centrifuge Perform centrifuga...

Embodiment 2

[0038] In this embodiment, the ultra-high molecular weight polyethylene / nylon 6 micro-foaming composite material with light weight, high toughness and low water absorption is prepared from the following raw materials in parts by weight:

[0039]

[0040] Concrete preparation method comprises the following steps:

[0041] (1) Weigh 5 parts of kaolin, add water:coupling agent KH550 according to the volume ratio of 90:10 into a 30mL solution reactor, stir and reflux at 60°C for 48h, cool down to room temperature, and then use a high-speed centrifuge Carry out centrifugation, and dry the product in a vacuum oven at 60°C for 30 hours to obtain coupling-treated kaolin;

[0042] (2) Add the kaolin and GMA coupling treated in step (1) into the reactor according to the weight ratio of 1:2, pass through the nitrogen protection, stir and reflux at a constant temperature of 50°C for 48h, cool down to room temperature, and then centrifuge with a high-speed centrifuge , the product was ...

Embodiment 3

[0046] In this embodiment, the ultra-high molecular weight polyethylene / nylon 6 micro-foaming composite material with light weight, high toughness and low water absorption is prepared from the following raw materials in parts by weight:

[0047]

[0048] Concrete preparation method comprises the following steps:

[0049] (1) Weigh 5 parts of silicon dioxide, add it into a 30mL solution reactor prepared by water:coupling agent KH550 according to the volume ratio of 90:10, stir and reflux at 65°C for 36h, cool down to room temperature, and then use high-speed Centrifuge in a centrifuge, and dry the product in a vacuum oven at 50°C for 48 hours to obtain coupling-treated silica;

[0050] (2) Add the silica and GMA that have been coupled in step (1) into the reactor at a weight ratio of 1:1, pass through the nitrogen protection, stir and reflux at a constant temperature of 65°C for 36 hours, cool down to room temperature, and then use a high-speed centrifuge Centrifuge. The p...

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Abstract

The invention discloses a light-weight, high-toughness and low-water-absorption-ratio ultra high molecular weight polyethylene (UHMWPE) / nylon 6 micro-foaming composite material and a preparation method thereof. The composite material is prepared from 97 to 99 weight percent of a polyamide composite material and 1 to 3 weight percent of a chemical foaming agent, wherein the polyamide composite material is prepared from the following components in parts by weight: 53 to 82 parts of PA6 (Polyamide 6), 6 to 12 parts of a compatilizer, 10 to 30 parts of UHMWPE, 3 to 5 parts of a modified inorganicnucleating agent, 0.2 to 0.4 part of an antioxidant, 0.5 to 1 part of a lubricant and 0 to 2 parts of other auxiliary agents. According to the light-weight, high-toughness and low-water-absorption-ratio ultra high molecular weight polyethylene / nylon 6 micro-foaming composite material, HDPE (High-density Polyethylene)-g-GMA (Glycidyl Methacrylate) is used as an interface bulking agent so that the interface binding force between the UHMWPE and the PA6 is enhanced, the impact strength of the PA6 is improved and the water absorption ratio of the PA6 is reduced; meanwhile, three-phase chain sections are mutually entwisted so that the melt strength of the PA6 is improved; the modified inorganic nucleating agent is subjected to chemical grafting modification through KH550 and GMA and the heterogeneous nucleation effect is remarkable; a dense bubble nucleation point is formed and the micro-foaming material with dense, fine and smooth bubble pores is obtained; the material has the characteristics of light weight, high impact strength, low water absorption ratio, high wear resistance and the like; foaming is realized through direct injection molding and a technology is simple; the material is widely applied to a lightweight technology of automobiles, household appliances, electronics and electrical appliances and the like.

Description

technical field [0001] The invention belongs to the technical field of macromolecular materials, in particular to an ultra-high molecular weight polyethylene / nylon 6 micro-foaming composite material with light weight, high toughness and low water absorption and a preparation method thereof. Background technique [0002] As one of the five major engineering plastics, polyamide has excellent heat resistance, excellent mechanical properties, and easy processing, but it has high density, low impact, easy water absorption, poor dimensional stability, and high friction coefficient. By introducing a large number of micropores into polyamide to form foamed materials, it can not only reduce density, save materials, reduce production costs, but also improve dimensional stability, sound insulation, and heat insulation. It has broad applications in the fields of automobiles, home appliances, and electronic appliances. However, the melt strength of PA is low, the cells are easy to collap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L23/06C08L51/06C08K13/06C08K9/10C08K9/06C08K3/36C08K3/34C08J9/08
CPCC08J9/0061C08J9/009C08J9/08C08J2203/02C08J2377/02C08J2423/06C08J2451/06
Inventor 石阳阳周海李飞夏洋李荣群
Owner ORINKO NEW MATERIAL CO LTD
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