Abrasion-resistant composite material of common polythene and preparation method thereof

A composite material and polyethylene technology, which is applied in the field of ordinary polyethylene wear-resistant composite materials and their preparation, can solve the problems of high processing difficulty, low friction coefficient and high viscosity, and achieves a simple preparation method, improved wear resistance and material cost. low effect

Inactive Publication Date: 2009-11-11
江苏吉星管业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molding and processing of UHMWPE is very difficult, mainly in the following three aspects: 1. The friction coefficient is extremely small, and the powder is easy to slip when feeding, and it is not easy to feed
2. The melt viscosity is high, and the melt flow rate (MFR) of UHMWPE is almost equal to zero when the load is increased by 10 times (ie 21.6kg), and the viscosity is as high as 108Pa s
When extruding with a screw, the melt is easy to envelop the screw and rotate together, it is difficult to push along the screw, and it is easy to form a "material plug"
3. The critical shear rate is low. During extrusion processing, product cracks are caused by melt fracture. During injection processing, product pores and delamination are caused by the emergence of jet flow.
Therefore, it is necessary to develop a kind of matrix resin that can use LLDPE and MDPE commonly used in rotational molding, and improve the wear resistance of the matrix resin by adding related fillers, so as to meet the requirements of engineering applications, and can also overcome the shortcomings of UHMWPE processing and molding difficulties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A common polyethylene wear-resistant composite material, its raw material ratio is as follows:

[0027] Linear Low Density Polyethylene 73

[0028] Surface treated silica 25

[0029] Lubricant (liquid) 2

[0030]Surface treatment of silicon dioxide first: first heat ethanol to 60°C, then add water and vinyltrimethoxysilane in turn under stirring, the molar ratio of water and coupling agent is 3:1, after the coupling agent is added After 1 min, silicon dioxide was added, the mass ratio of coupling agent to silicon dioxide was 1:100, and stirring was continued at 60° C. for 30 min. Then firstly remove the liquid at 60-70°C, and then dry at 120°C for 1 hour to obtain surface-treated silicon dioxide for future use. Then it is the preparation of the composite material: after the components of the system are mixed uniformly on the open plastic refining machine, the obtained composite material is crushed, and finally the finished powder is obtained by grinding.

[0031] Co...

Embodiment 2

[0036] A common polyethylene wear-resistant composite material, its raw material ratio is as follows:

[0037] Linear Low Density Polyethylene 80

[0038] Surface treated silica 17

[0039] Lubricant (liquid) 3

[0040] The preparation method of the above ordinary polyethylene wear-resistant composite material is the same as in Example 1, wherein the mass ratio of vinyltrimethoxysilane to silicon dioxide is 1.5:100, and the performance test results are shown in Table 2.

[0041] The performance test result of table 2 embodiment 2

[0042] The melt flow rate

Embodiment 3

[0044] A common polyethylene wear-resistant composite material, its raw material ratio is as follows:

[0045] Linear Low Density Polyethylene 90

[0046] Surface treated silica 6

[0047] Lubricant (liquid) 4

[0048] The preparation method of the above ordinary polyethylene wear-resistant composite material is the same as that of Example 1, wherein the mass ratio of vinyltrimethoxysilane to silicon dioxide is 2.0:100, and the performance test results are shown in Table 3.

[0049] The performance test result of table 3 embodiment 3

[0050] The melt flow rate

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PUM

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Abstract

The invention discloses an abrasion-resistant composite material of common polythene and a preparation method thereof. The composite material uses the common polythene as a base material, and improves the abrasion resistance of a matrix resin by adding abrasion-resistant stuffing and lubricating components. Simultaneously, the abrasion-resistant composite material retains the good processing property of the general polythene, and overcomes the defect that the polythene with super-high molecular weight is difficult to process. The abrasion-resistant composite material of the common polythene consists of the following components in percentage by mass: 73 to 90 percent of the polythene, 6 to 25 percent of the abrasion-resistant stuffing for surface treatment, and 2 to 4 percent of lubricating agent.

Description

technical field [0001] The present invention relates to a composite material and its preparation, more specifically to a common polyethylene wear-resistant composite material and its preparation method. Background technique [0002] Wear is an important failure mode of mechanical equipment. In my country, more than 3 million tons of metal wear-resistant materials are consumed due to wear and tear every year. Wear and tear not only causes failure of equipment parts, leads to frequent replacement and maintenance of workpieces, reduces equipment efficiency, but also consumes a lot of energy and materials. Therefore, reducing friction and wear is conducive to improving the efficiency of resource utilization, and is conducive to obtaining the greatest economic and social benefits with the least resource consumption. At present, there are two main methods for reducing friction and wear: 1. Reasonable selection and use of wear-resistant materials; 2. Application of surface techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/04C08K9/06
Inventor 王庭慰王泽邵海彬吉林施维军
Owner 江苏吉星管业科技有限公司
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