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Wear-resistant and corrosion-resistant injection molding composite material and manufacturing method of pump accessory

A composite material and injection molding technology, which is applied in the field of polymer composite materials and pump parts manufacturing, can solve problems such as insufficient surface hardness, insufficient material strength, and low shear strength

Pending Publication Date: 2021-12-07
湖南三昌泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface hardness of most materials is not enough, and the material strength is not high enough, especially the shear strength is low, and the wear resistance and sand resistance also need to be improved.

Method used

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  • Wear-resistant and corrosion-resistant injection molding composite material and manufacturing method of pump accessory
  • Wear-resistant and corrosion-resistant injection molding composite material and manufacturing method of pump accessory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, raw materials are:

[0031] High-density polyethylene, 43 parts by mass, with a crystallinity of 70% and a melt index of 17g / 10min; purchased from high-density polyethylene produced by ExxonMobil.

[0032] Linear low-density polyethylene, 25 parts by mass, a crystallinity of 62%, and a melt index of 40g / 10min; purchased from linear low-density polyethylene produced by ExxonMobil.

[0033] Ultra-high molecular weight polyethylene, 25 parts by mass, with a molecular weight of 8 to 12 million; purchased from ultra-high molecular weight polyethylene produced by Ticona Corporation of the United States.

[0034] Reinforcing fiber, 10 parts by mass; basalt fiber, produced by Zhejiang Shijin Basalt Fiber Co., Ltd. The fiber surface activation process uses 1.0wt% surface modifier of the fiber. The surface modifier uses KH-550 silane coupling agent. The surface activation and drying are processed in the laboratory according to the existing conventional techno...

Embodiment 2

[0039] In this embodiment, raw materials are:

[0040] High-density polyethylene, 50 parts by mass, with a crystallinity of 85%, and a melt index of 20g / 10min; purchased from linear low-density polyethylene produced by ExxonMobil.

[0041] Linear low-density polyethylene, 30 parts by mass, crystallinity is 70%, and melt index is 50g / 10min; purchased from the linear low-density polyethylene produced by ExxonMobil.

[0042] Ultra-high molecular weight polyethylene, 15 parts by mass, with a molecular weight of 8 to 12 million; purchased from ultra-high molecular weight polyethylene produced by Ticona Corporation of the United States.

[0043] Reinforcing fiber, 5 parts by mass; sepiolite fiber, produced by Hebei Hongli sepiolite cashmere Co., Ltd. The fiber surface activation process uses 1.5wt% surface modifier of the fiber, the surface modifier uses a mixture of KH-550 silane coupling agent and American Kenrich KR-12 titanate coupling agent in a mass ratio of 1:1, Surface act...

Embodiment 3

[0048] In this embodiment, raw materials are:

[0049] High-density polyethylene, 35 parts by mass, with a crystallinity of 70%, and a melt index of 15g / 10min; purchased from high-density polyethylene produced by ExxonMobil.

[0050] Linear low-density polyethylene, 20 parts by mass, crystallinity is 55%, and melt index is 30g / 10min; purchased from the linear low-density polyethylene produced by ExxonMobil.

[0051] Ultra-high molecular weight polyethylene, 35 parts by mass, with a molecular weight of 8 to 12 million; purchased from ultra-high molecular weight polyethylene produced by Ticona Corporation of the United States.

[0052] Reinforcing fiber, 15 parts by mass; potassium hexatitanate whisker, produced by Shanghai Whisker Composite Material Co., Ltd. The fiber surface activation process uses 0.5wt% surface modifier of the fiber, the surface modifier uses KR-12 titanate coupling agent from Kenrich Company of the United States, and the surface activation and drying are ...

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Abstract

The invention relates to a wear-resistant and corrosion-resistant injection molding composite material and a manufacturing method of pump accessories, which comprises the following steps: mixing 35-50 parts by mass of dried high-density polyethylene, 20-30 parts by mass of linear low-density polyethylene, 15-35 parts by mass of ultra-high molecular weight polyethylene, 5-15 parts by mass of reinforced fiber and 1.5-5 parts by mass of a processing aid, carrying out melt extrusion and granulation, plasticizing and uniformly mixing to obtain the injection molding grade composite material, wherein the reinforced fiber is mixed with other materials in a manner of laterally feeding and then adding; and using the obtained injection molding grade composite material for producing pump accessories through injection molding, wherein the injection molding temperature is set as follows: the first area is 180-200 DEG C, the second area to the fourth area is 230-270 DEG C, the injection molding pressure is 80-120 Pa, the flow is 70%-90% of the maximum flow of an injection molding machine, and the mold temperature is 60-80 DEG C.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a wear-resistant and corrosion-resistant injection-molded polymer composite material; the invention also relates to a method for manufacturing pump accessories. Background technique [0002] The considerations for the selection of pump materials are: strength, corrosion, abrasive wear resistance, production and machining performance, maintenance performance, cost, etc. Commonly used pump materials include cast iron, cast steel, stainless steel, carbon structural steel, alloy steel, brass, and non-metallic materials. Non-metallic materials for pumps are mainly used for sealing, such as polytetrafluoroethylene, fluororubber, nitrile rubber, etc. Among them, polytetrafluoroethylene is mostly used in the seals of chemical pumps because of its excellent corrosion resistance and high temperature resistance. It is suitable for almost all chemical media within 250 ° C. Its dis...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K9/06C08K7/10C08K9/04C08K7/08
CPCC08L23/06C08L2207/062C08L2207/068C08L2205/025C08L23/0815C08K9/06C08K7/10C08K9/04C08K7/08
Inventor 王水江高庆凯赵浩亮黄发
Owner 湖南三昌泵业有限公司
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