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Pump core valve needle material and preparation method thereof

A valve needle and pump core technology, applied in the field of polymer materials, can solve the problems of acid resistance, sunlight resistance, high crystallinity of polyoxymethylene, etc.

Pending Publication Date: 2020-10-20
NINGBO JINYU TECH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high crystallinity of polyoxymethylene, it is easy to form larger spherulites during the molding process; and it is not resistant to acids, strong alkalis and sunlight ultraviolet radiation; this greatly limits the quality of polyoxymethylene. Development and Application of Resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The second aspect of the present invention improves the preparation method of the pump core valve needle material, including the following steps: mixing the various raw materials to form a mixed material; introducing the mixed material from the main material feeding port of the extruder, Extruding and granulating to obtain the pump core valve needle material;

[0035] The extrusion temperature conditions of the extruder include: 145-155°C in the first zone, 155-165°C in the second zone, 165-175°C in the third zone, 165-185°C in the fourth zone, 185-205°C in the fifth zone, and 190°C in the sixth zone. ~215℃, head 210~220℃.

Embodiment 1

[0040] A pump core valve needle material, in parts by weight, including 65 parts of PP resin, 10 parts of toughening agent, 1 part of lubricant stearic acid, 0.5 part of silane coupling agent KH560, 6 parts of filler, 7 parts of carbon nanofiber , 0.5 part of antioxidant.

[0041] The melt flow rate of the homopolymerized PP resin is 26g / 10min, the manufacturer is Shanghai Petrochemical, and the brand is Y2600.

[0042] The toughening agent is nano-calcium carbonate and EPDM; the weight ratio of the nano-calcium carbonate and EPDM is 1:3. The average particle size of the nano-calcium carbonate is 30nm; the EPDM rubber is purchased from Weihai Huaen Rubber and Plastic New Material Co., Ltd.

[0043] The filler is talcum powder and lignin, and the weight ratio of the talc powder and lignin is 1:1.0. The method for extracting lignin comprises the following steps: pulverizing pine wood, heating it with steam to 240 degrees centigrade, treating it for 10 minutes, and then extract...

Embodiment 2

[0049] A pump core valve needle material, in parts by weight, including 65 parts of PP resin, 10 parts of toughening agent, 1 part of lubricant stearic acid, 0.5 part of silane coupling agent KH560, 6 parts of filler, 7 parts of carbon nanofiber , 0.5 part of antioxidant.

[0050] The melt flow rate of the homopolymerized PP resin is 26g / 10min, the manufacturer is Shanghai Petrochemical, and the brand is Y2600.

[0051] The toughening agent is nano-calcium carbonate and EPDM; the weight ratio of the nano-calcium carbonate and EPDM is 1:3. The average particle size of the nano-calcium carbonate is 30nm; the EPDM rubber is purchased from Weihai Huaen Rubber and Plastic New Material Co., Ltd.

[0052] The filler is talcum powder and lignin, and the weight ratio of the talc powder and lignin is 1:0.1. The method for extracting lignin comprises the following steps: pulverizing pine wood, heating it with steam to 240 degrees centigrade, treating it for 10 minutes, and then extract...

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PUM

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Abstract

The invention belongs to the field of polymer materials, and particularly relates to a pump core valve needle material and a preparation method thereof. The invention provides a pump core valve needlematerial which comprises the following components in parts by weight: 60-70 parts of PP resin, 8-15 parts of a toughening agent, 0.5-2 parts of a lubricating agent, 0.1-1 part of a silane coupling agent, 2-8 parts of a filler, 5-10 parts of carbon nanofibers and 0.1-1 part of an antioxidant. The pump core valve needle material is prepared through mutual cooperation of more environment-friendly PPresin, the toughening agent, the filler and the like, has high mechanical properties, is resistant to high temperature and low temperature, and can well resist organic solvents such as ethanol and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a pump core valve needle material and a preparation method thereof. Background technique [0002] Emulsion bottles and vacuum pumps are containers used for emulsion storage and extraction. They mainly use the principle of the push-type micro-sprayer, and omit the setting of the baffle in the head cap, so that the emulsion passes through the suction pipe and the pump body, and then flows from the head of the nozzle. The cap flows out without being atomized and sprayed out due to the blocking of the baffle. The main structure of the lotion bottle and vacuum pump is the lotion bottle cap and the pump core; in general, the pump core is composed of stator, rotor, valve needle and other materials, and the main preparation material of the valve needle is polyoxymethylene resin. [0003] Polyoxymethylene resin has unique mechanical properties, high stiffness and hardness, ex...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/16C08L97/00C08K13/04C08K7/06C08K5/09C08K5/5435C08K3/26C08K3/34C08K5/134
CPCC08L23/12C08L2201/08C08L2205/02C08L2205/03C08K2003/265C08K2201/011C08L23/16C08L97/005C08K13/04C08K7/06C08K5/09C08K5/5435C08K3/26C08K3/34C08K5/1345
Inventor 杭呈
Owner NINGBO JINYU TECH IND CO LTD