Surface-modified nano boron fiber Mo-Zn-S-F composite material and application thereof in wear-resistant packing

A surface modification nano, mo-zn-s-f technology, applied in the field of sealing materials, can solve the problems of easy wear, affecting the service life and sealing stability performance, poor thermal conductivity of packing, etc., and achieves good chemical stability and manufacturing process. Simple, less demanding effect on equipment

Inactive Publication Date: 2020-12-15
HUNAN CHENLI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these packings have poor thermal conductivity and are easy to wear, which seriously affects their service life and sealing stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A wear-resistant packing prepared from the following raw materials in parts by weight: 10 parts of surface-modified nano-boron fiber / Mo-Zn-S-F composite material, 20 parts of polyvinyl chloride fiber, and 30 parts of modified polyisoprene , 10 parts of ethylene propylene rubber, 1 part of N,N'-m-phenylene bismaleimide.

[0036] The preparation method of the surface modified nano-boron fiber / Mo-Zn-S-F composite material comprises the following steps:

[0037] Step S1: Put 10g of molybdenum chloride, 10g of zinc chloride, 20g of ammonium sulfide, and 5g of ammonium hexafluorophosphate into a water-bath reaction kettle, add 100g of ethylenediamine, conduct a hydrothermal reaction at 180°C for 15h, cool to room temperature, and pump Filter, wash 3 times with benzene first, then wash 4 times with water, then wash 5 times with ethanol, the product obtained is dried in a vacuum oven at 60°C for 6 hours, ground, and passed through a 200-mesh sieve to obtain Mo-Zn- S-F;

[003...

Embodiment 2

[0046] A wear-resistant packing prepared from the following raw materials in parts by weight: 12 parts of surface-modified nano-boron fiber / Mo-Zn-S-F composite material, 23 parts of polyvinyl chloride fiber, and 33 parts of modified polyisoprene , 13 parts of ethylene propylene rubber, 2 parts of 2,5-dithio-1,3,4-thiadiazole.

[0047] The preparation method of the surface modified nano-boron fiber / Mo-Zn-S-F composite material comprises the following steps:

[0048] Step S1: Put 10g of molybdenum chloride, 10g of zinc chloride, 23g of ammonium sulfide, and 5g of ammonium hexafluorophosphate into a water-bath reaction kettle, add 120g of diethylamine, conduct a hydrothermal reaction at 190°C for 17h, then cool to room temperature, pump Filter, wash 4 times with benzene first, then wash 5 times with water, and then wash 6 times with ethanol. The obtained product is dried in a vacuum oven at 65°C for 6.5 hours, ground, and passed through a 220-mesh sieve to obtain Mo-Zn- S-F;

...

Embodiment 3

[0057] A wear-resistant packing prepared from the following raw materials in parts by weight: 14 parts of surface-modified nano-boron fiber / Mo-Zn-S-F composite material, 25 parts of polyvinyl chloride fiber, and 35 parts of modified polyisoprene , ethylene propylene rubber 15 parts, sulfur 3 parts.

[0058] The preparation method of the surface modified nano-boron fiber / Mo-Zn-S-F composite material comprises the following steps:

[0059] Step S1: Put 10g of molybdenum chloride, 10g of zinc chloride, 25g of ammonium sulfide, and 5g of ammonium hexafluorophosphate into a water-bath reaction kettle, add 130g of ethylenediamine, perform a hydrothermal reaction at 200°C for 18h, cool to room temperature, and pump Filter, wash 5 times with benzene, wash 6 times with water, and wash 7 times with ethanol. The obtained product is dried in a vacuum oven at 70°C for 7 hours, ground, and passed through a 250-mesh sieve to obtain Mo-Zn- S-F;

[0060] Step S2: Disperse 20 g of Mo-Zn-S-F a...

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PUM

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Abstract

The invention discloses a surface-modified nano boron fiber / Mo-Zn-S-F composite material. A preparation method of the surface-modified nano boron fiber / Mo-Zn-S-F composite material comprises the following steps: S1, putting molybdenum chloride, zinc chloride, ammonium sulfide and ammonium hexafluorophosphate into a water bath reaction kettle, adding a reaction solvent, performing hydrothermal reaction at 180-220 DEG C for 15-20 hours, cooling to room temperature, performing suction filtration, washing with benzene for 3-5 times, then washing with water for 4-7 times, then washing with ethanolfor 5-8 times, drying the obtained product in a vacuum drying oven at the temperature of 60-80 DEG C for 6-8 hours, grinding, and sieving with a 200-300-mesh sieve to obtain Mo-Zn-S-F; S2, dispersingthe Mo-Zn-S-F and the nano boron fibers prepared in the step S1 into a high-boiling-point solvent, then adding polymethyltriethoxysilane modified epoxy resin into the high-boiling-point solvent, carrying out stirring reaction for 6-8 hours at the temperature of 60-80 DEG C, then carrying out precipitation and suction filtration in water, and washing for 3-5 times by using ethanol so as to obtain the surface modified nano boron fiber / Mo-Zn-S-F composite material. The wear-resistant packing prepared from the composite material has the advantages of mechanical property, wear resistance, high temperature resistance, good chemical stability and excellent sealing property.

Description

technical field [0001] The invention relates to the technical field of sealing materials, in particular to a surface-modified nano boron fiber Mo-Zn-S-F composite material and its application in wear-resistant packing. Background technique [0002] In all kinds of mechanical static groove seal structures at present, the sealing requirements at the junction joints are very high, and the sealing material commonly used at present is in the form of packing. Packing is a kind of sealing material that is woven from softer wires and filled in the sealing cavity to achieve sealing. This kind of material is widely used in shaft seals of centrifugal pumps, compressors, vacuum pumps, mixers and ship propellers, piston pumps, reciprocating compressors, and refrigerators due to its wide source, easy processing, low price, reliable sealing, and simple operation. Reciprocating motion shaft seals, and rotary seals for various valve stems, etc. [0003] At present, the common packing mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L23/16C08L27/06C08L63/00C08K13/06C08K7/06C08K3/30C08C19/22
CPCC08K2201/011C08L15/00C08L2201/08C08L2205/03C08L2205/16C08L23/16C08L27/06C08K13/06C08K9/08C08K9/02C08K7/06C08K5/47C08K3/06C08K5/3417
Inventor 朱小红
Owner HUNAN CHENLI NEW MATERIAL CO LTD
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