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Silicon micropowder reinforced polyethylene material and preparation method thereof

A technology of micro-silica fume and polyethylene, applied in the field of polymer science, to achieve the effects of improving creep resistance and heat resistance, solving poor tensile strength and impact resistance, and simple production method

Inactive Publication Date: 2014-03-19
GUIZHOU LANTU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the existing technology mainly adds microsilica fume as a filler to asphalt or paint, and does not involve it as a reinforced polyethylene material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 of the present invention: microsilica powder reinforced polyethylene material, calculated in parts by weight, including 70 parts of polyethylene, 25 parts of microsilica fume, 0.4 part of surface modifier, 4 parts of dispersant and 0.6 part of antiaging agent ; The surface modifier is a silane coupling agent; the dispersant is polyethylene wax; the anti-aging agent is nano-titanium dioxide.

[0017] The preparation method of microsilica powder reinforced polyethylene material, take each component according to the above weight parts, mix microsilica powder and surface modifier, the mixing temperature is 50 ℃, after mixing for 2 hours, the modified microsilica fume is obtained ; Vacuum dry the modified micro-silicon at a temperature of 100°C for 6 hours to obtain dry modified micro-silicon powder; fully mix the dried modified micro-silicon powder, polyethylene, anti-aging agent and dispersant , after adding into the extruder to melt, extrude, granulate and dr...

Embodiment 2

[0019] Example 2 of the present invention: microsilica powder reinforced polyethylene material, calculated in parts by weight, including 80 parts of polyethylene, 15 parts of microsilica fume, 0.2 part of surface modifier, 4 parts of dispersant and 0.8 part of antiaging agent ; The surface modifier is titanate coupling agent; the dispersant is modified ethylene bis stearamide; the anti-aging agent is nano-titanium dioxide.

[0020] The preparation method is the same as in Example 1.

[0021] The experimental results show that the impact strength of the pure polyethylene material is 710J / m, and the tensile strength is 19.5MPa. Adding 15 parts of microsilica to polyethylene, the impact strength of the composite material increases by 56.8%, and the tensile strength increases by 23.5%.

Embodiment 3

[0022] Embodiment 3 of the present invention: microsilica powder reinforced polyethylene material, calculated in parts by weight, including 85 parts of polyethylene, 10 parts of microsilica powder, 0.6 part of surface modifier, 4 parts of dispersant and 0.4 part of antiaging agent ; The surface modifier is stearic acid; the dispersant is polyethylene wax; the anti-aging agent is nano-titanium dioxide.

[0023] The preparation method is the same as in Example 1.

[0024] The experimental results show that the impact strength of the pure polyethylene material is 710J / m, and the tensile strength is 19.5MPa. Adding 10 parts of microsilica to polyethylene, the impact strength of the composite material increases by 38.4%, and the tensile strength increases by 25.3%.

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Abstract

The invention discloses a silicon micropowder reinforced polyethylene material and a preparation method thereof. The silicon micropowder reinforced polyethylene material contains the following ingredients in parts by weight: 40-98 parts of polyethylene, 1-50 parts of silicon micropowder, 0.1-5 parts of surface modifier and 0.1-5 parts of dispersant. According to the method, the silicon micropowder is mixed with polyethylene after the silicon micropowder is subjected to surface modification, the dispersant is added during mixing, and melt-extrusion granulation is carried out under the condition that the screw revolution rate and extrusion temperature of an extruder are set, so that a silicon micropowder modified polyethylene master batch with excellent performance is obtained. According to the silicon micropowder reinforced polyethylene material and the preparation method thereof, the disadvantages that the tensile strength and impact resistance of polyethylene are poor and the like can be effectively solved, the creep resistance and heat resistance of a polyethylene material are improved, and the comprehensive performance of a silicon micropowder modified polyethylene composite material is excellent, so that continuous production can be carried out.

Description

technical field [0001] The invention relates to the field of polymer science, in particular to a microsilica powder reinforced polyethylene material and a preparation method thereof. Background technique [0002] Polyethylene is a thermoplastic resin obtained by polymerization of ethylene monomer. Polyethylene resin has a wide range of sources, low price, and good processing performance. It is widely used in daily necessities, outer packaging, automobile body, construction industry, and household appliances. Polyethylene has no irritating odor, almost no toxicity, good low temperature resistance, excellent chemical stability, resistance to most acids and alkalis, insoluble in general solvents at room temperature, low hygroscopicity, and good electrical insulation properties. However, polyethylene is sensitive to environmental stress (chemical and mechanical effects), and has poor heat resistance and aging resistance. Polyethylene can be divided into three categories accord...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K9/04C08K3/34C08K3/22C08K5/20C08J3/22B29C47/92B29C48/92
CPCB29C48/04C08K2003/2241C08L23/06B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2323/06C08J2423/06C08K3/36C08K9/04C08K13/06C08K2201/011C08L2201/08C08L2205/025C08L2205/03C08K9/06
Inventor 石文建杨再祥吴毅雷勇魏喜苹
Owner GUIZHOU LANTU NEW MATERIALS
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