Preparation method of high-strength and corrosion-resistant industrial filter cloth

A corrosion-resistant, high-strength technology, applied in the field of industrial filter cloth preparation, can solve problems such as low mechanical strength, reduce use effect, and affect performance, and achieve the effects of improving mechanical properties and anti-corrosion properties, improving plasticity, and increasing strength

Active Publication Date: 2017-10-27
江苏金旺环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the commonly used industrial filter cloths currently have low mechanical strength, limited service life, and limited use under extreme conditions. The common method is to introduce high-strength resins to increase their mechanical strength, but the problems caused by these resins are on the one hand. The degree of compounding with common industrial filter cloth fibers is not enough, which affects the maximum performance. On the other hand, because the above components produce greater resistance to liquid filtration

Method used

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  • Preparation method of high-strength and corrosion-resistant industrial filter cloth
  • Preparation method of high-strength and corrosion-resistant industrial filter cloth

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A preparation method of high-strength corrosion-resistant industrial filter cloth, comprising the following steps:

[0028] Step 1, adding 10 parts of polyethylene powder and 8 parts of polypropylene powder in parts by weight to 150 parts of hot water with a temperature above 70°C, stirring for 10 minutes, then adding 80 parts of absolute ethanol, heating to boiling, Hold for 5 minutes, filter, and dry at 100°C to obtain a mixture;

[0029] Step 2, adding the mixture to 130 parts of dichloroethane, raising the temperature to 70°C under nitrogen protection, reacting for 45 minutes, filtering after cooling, washing with acetone, and drying to obtain a solid;

[0030] Step 3, 10 parts of PET, 6 parts of polytetrafluoroethylene emulsion, 5 parts of liquid nitrile rubber, 5 parts of diphenylsilanediol and 3 parts of modified graphene are mixed with solids, and the vacuum degree is 0.01MPa. Heating to 105°C at a heating rate of 2°C / min under the conditions, keeping it for 30...

Embodiment 2

[0034] A preparation method of high-strength corrosion-resistant industrial filter cloth, comprising the following steps:

[0035] Step 1, adding 12 parts of polyethylene powder and 9 parts of polypropylene powder in parts by weight to 160 parts of hot water at a temperature above 70°C, stirring for 13 minutes, then adding 85 parts of absolute ethanol, heating to boiling, Hold for 7 minutes, filter, and dry at 105°C to obtain a mixture;

[0036] Step 2, adding the mixture to 136 parts of dichloroethane, raising the temperature to 74°C under nitrogen protection, reacting for 48 minutes, filtering after cooling, washing with acetone, and drying to obtain a solid;

[0037] Step 3, 12 parts of PET, 7 parts of polytetrafluoroethylene emulsion, 6 parts of liquid nitrile rubber, 6 parts of diphenylsilanediol and 4 parts of modified graphene are mixed with the solid, and the vacuum degree is 0.02MPa. Under the conditions, heat to 106°C at a heating rate of 3°C / min, keep it for 35 min...

Embodiment 3

[0041] A preparation method of high-strength corrosion-resistant industrial filter cloth, comprising the following steps:

[0042] Step 1: Add 13 parts of polyethylene powder and 9 parts of polypropylene powder in parts by weight to 190 parts of hot water at a temperature above 70°C, stir for 17 minutes, then add 90 parts of absolute ethanol, heat to boiling, Hold for 8 minutes, filter, and dry at 110°C to obtain a mixture;

[0043] Step 2, adding the mixture to 146 parts of dichloroethane, raising the temperature to 77°C under nitrogen protection, reacting for 50 minutes, filtering after cooling, washing with acetone, and drying to obtain a solid;

[0044] Step 3, mix 14 parts of PET, 7 parts of polytetrafluoroethylene emulsion, 6 parts of liquid nitrile rubber, 6 parts of diphenylsilanediol and 4 parts of modified graphene with the solid matter, and the vacuum degree is 0.03MPa Under the conditions, heat to 108°C at a heating rate of 2°C / min, keep it for 38 minutes, then cool...

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Abstract

The invention discloses a preparation method of high-strength and corrosion-resistant industrial filter cloth. The method comprises the steps of firstly, mixing polyethylene powder and polypropylene for modifying, heating the mixture together with polyethylene terephthalate (PET), polytetrafluoroethylene emulsion, liquid butyronitrile rubber, diphenyl silanediol and modified graphene under the vacuum condition for carrying out second modification; then, carrying out melting extrusion by using a twin-screw extruder, and jetting silk yarns by using a spinneret plate of a spinning box, cooling, sizing to obtain netting silk yarns; finally, weaving a net by using the netting silk yarns to obtain the industrial filter cloth. The industrial filter cloth prepared by the method provided by the invention is modified by twice, so that all the components of the filter cloth have high degree synergism; therefore, the water permeability, mechanical performance, corrosion resistance and use stability of the filter cloth are improved by all the components together.

Description

technical field [0001] The invention belongs to the technical field of industrial filter cloth preparation, and in particular relates to a preparation method of high-strength corrosion-resistant industrial filter cloth. Background technique [0002] At present, the main components used in industrial filter cloth are polypropylene, polyester, nylon, etc. Among them, polypropylene and polyester are the most commonly used. The weaving method adopts plain weave and twill weave. It has high precision, and has certain acid and alkali resistance and wear resistance. performance. However, the commonly used industrial filter cloths currently have low mechanical strength, limited service life, and limited use under extreme conditions. The common method is to introduce high-strength resins to increase their mechanical strength, but the problems caused by these resins are on the one hand. The degree of compounding with common industrial filter cloth fibers is not enough, which affects ...

Claims

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Application Information

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IPC IPC(8): B01D39/08D01F8/14D01F8/06D01F8/10D01F8/18D01F1/10D03D15/00D03D13/00
CPCB01D39/083B01D2239/0613B01D2239/10D01F1/10D01F8/06D01F8/10D01F8/14D01F8/18D03D13/008D03D15/00
Inventor 单素梅朱彦加朱靓靓吴健健张瑜李素英付译鋆
Owner 江苏金旺环保科技有限公司
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