Nylon modified ultra-molecular weight polyethylene blending material

A technology of ultra-molecular weight and polyethylene, applied in the field of polyethylene modified materials, can solve the problems of poor heat resistance and surface hardness, and achieve the effect of increasing the bonding force and improving the notched impact strength

Inactive Publication Date: 2018-04-27
哈尔滨盛洋塑胶材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor heat resistance and surface hardness of existing UHMW-PE, and provide a nylon-modified ultra-molecular weight polyethylene blend material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0010] Embodiment 1: This embodiment is a nylon modified ultra-molecular weight polyethylene blend material, which consists of 1-30 parts by weight of dry PA6, 60-98 parts of pretreated UHMW-PE, 0.01-0.5 parts It is made of nucleating agent and 1-10 parts of solubilizing agent.

[0011] Polyamide is a general-purpose engineering plastic, commonly known as nylon. It is a crystalline plastic with a density of 1.13 and a much lower viscosity than other thermoplastics. Its melting temperature range is narrow (only about 5°C). It is a crystalline polymer containing amide groups in the repeating structure of the macromolecular chain. It is difficult to blend with other polymers. If a compatibilizer is added, a variety of polyamide blends can be produced. Polyamide has high mechanical strength, Good toughness, fatigue resistance, smooth surface, self-lubrication, small friction coefficient, wear resistance, heat resistance (long-term use within 100°C), corrosion resistance, light wei...

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is: the preparation process of the pretreated UHMW-PE is as follows: Weigh 70 parts of paraffin oil, 30 parts of UHMW-PE and 1 part of gas phase Silica is mixed and granulated at a temperature of 185-195°C to obtain pretreated UHMW-PE. Others are the same as the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the solubilizer is high-density polyethylene grafted with maleic anhydride. Others are the same as those in Embodiment 1 or 2.

[0019] In this embodiment, high-density polyethylene grafted maleic anhydride is used as a compatibilizer, and high-density polyethylene grafted maleic anhydride (PE–HD-g-MAH) can react with PA6 to generate PA6-g-PE–HD, forming The grafts can effectively increase the interfacial cohesion of the material, so that PA6 in the system can form a more stable combination with the UHMW-PE matrix. When the material is subjected to external force, it absorbs and dissipates energy in the process of interface debonding, cavitation, and matrix shear yielding, so as to achieve the purpose of heat resistance, toughening, and improvement of processability. At the same time, in order to better obtain high-performance co- For mixing, we use the method of adding a compatibilizer to...

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PUM

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Abstract

The invention discloses nylon modified ultra-molecular weight polyethylene blending material, and relates to a high-temperature-resisting and easy-processing polyethylene modified material. The invention aims to solve the problem of poor heat resistance and bad surface hardness of the existing UHMW-PE. The nylon modified ultra-molecular weight polyethylene blending material is prepared by dried PA6, pretreated UHMW-PE, nucleating agent and solubilizer. The nylon modified ultra-molecular weight polyethylene blending material has the advantages that the nylon modified ultra-molecular weight polyethylene blending material prepared by taking high molecular compatible technology and taking PA6, pretreated UHMW-PE, nucleating agent and solubilizer as raw materials has good binding force, and thebinding force between interface layers is enlarged; vicat softening temperature reaches 195 DEG C, and shore hardness reaches 102. The entanglement degree is increased. The invention is mainly applied to prepare the nylon modified ultra-molecular weight polyethylene blending material.

Description

technical field [0001] The invention relates to a high-temperature resistant and easy-to-process polyethylene modified material. Background technique [0002] Ultra-high molecular weight polyethylene (UHMW-PE) is a thermoplastic engineering plastic with a linear structure and excellent comprehensive properties. It has good properties such as wear resistance, chemical corrosion resistance, low temperature resistance, and self-lubrication. It can replace metal materials as anti-wear materials. It is widely used in textile, medical, metallurgy, electric power, coal and transportation and other fields. Although UHMW-PE has many excellent properties, the large molecular weight and linear structure make it have a very long molecular chain, which makes UHMW-PE melt viscosity high and melt processing difficult. At the same time, UHMW-PE has low surface hardness and heat resistance. The shortcomings such as poor performance make it unable to meet the specific requirements of the wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L77/02C08L51/06C08K5/098
CPCC08L23/06C08L2201/08C08L2205/03C08L2205/08C08L2205/24C08L2207/068C08L77/02C08L51/06C08K5/098
Inventor 郭广蕲郭琳刘明鑫郭宇郭照军
Owner 哈尔滨盛洋塑胶材料有限公司
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