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Preparation method of silicon carbide-carbon nano tube-montmorillonite compound-modified heat-resistant anti-static adhesive used for filter

A technology of acidifying carbon nanotubes and carbon nanotubes, which is applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of reduced filtration efficiency, non-dense colloid, shortened service life, etc., and achieve improved shear strength , reduce agglomeration and increase tensile strength

Inactive Publication Date: 2019-02-12
BENGBU CITY MINGWEI FILTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main reasons for the failure of the filter: one is that the quality of the filter paper, the main raw material used to manufacture the filter, is not good, the pore size is too large, the thickness is uneven, or the number of folds of the filter paper is too small, and the fold width is too small. It cannot play the proper filtering effect, or the strength of the filter paper is too low, and it will be broken after a certain flow of air, and the filtration efficiency will be greatly reduced
The second is that the adhesive process in production is not well mastered, especially the quality of the adhesive itself is not good, so that the seal between the filter paper and the end cap cannot be kept, so that dust can flow through the gap. Therefore, it is necessary to continuously develop more durable and stronger adhesive force. adhesive
[0004] The bonding strength of the cover is reduced or even falls off, causing the filter to be scrapped in advance, causing early wear and tear of the engine and shortening its service life; the heat-curing adhesive for oil filters currently used in China has the following disadvantages: foaming holes in the cured colloid, The colloid is not dense; the bonding strength is poor; the production process does not meet the environmental protection requirements, the rubber material is rough, and the appearance is poor; therefore, it is necessary to study an environmentally friendly, high temperature resistant, oil resistant, high bonding strength, and anti-aging oil filter thermal curing Adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a silicon carbide-carbon nanotube-montmorillonite composite modified heat-resistant and antistatic adhesive for a filter, characterized in that it comprises the following steps:

[0028] (1) Surface modification of nano silicon carbide by solution method:

[0029] Dry 1 part of nano-silicon carbide at 200-205°C for 4 hours, add 1:5 to absolute ethanol, and ultrasonically analyze

[0030] Disperse for 1 hour, add coupling agent solution, heat and stir in an oil bath at 70-73°C for 2 hours, let stand to cool, then centrifuge, wash with absolute ethanol for 3 times, and dry in a vacuum oven at 50-53°C for 10 hours. Obtain silane coupling agent modified nano-silicon carbide;

[0031] (2) Functionalization of acidified carbon nanotubes:

[0032] Dry the acidified carbon nanotubes in an oven at 120-123°C for 5 hours, add ethanol at 1:30, oscillate ultrasonically for 1 hour, then dry them in an oven at 120-123°C for 5 hours, cool naturally, grind, add ...

Embodiment 2

[0042] A method for preparing a silicon carbide-carbon nanotube-montmorillonite composite modified heat-resistant and antistatic adhesive for a filter, characterized in that it comprises the following steps:

[0043] (1) Surface modification of nano silicon carbide by solution method:

[0044] Dry 2 parts of nano-silicon carbide at 200-205°C for 5 hours, add 1:10 to absolute ethanol, and ultrasonically analyze

[0045] Disperse for 2 hours, add coupling agent solution, heat and stir in an oil bath at 70-73°C for 3 hours, let stand and cool, then centrifuge, wash with absolute ethanol for 5 times, and dry in a vacuum oven at 50-53°C for 12 hours. Obtain silane coupling agent modified nano-silicon carbide;

[0046] (2) Functionalization of acidified carbon nanotubes:

[0047] Dry the acidified carbon nanotubes in an oven at 120-123°C for 6 hours, add ethanol at 1:35, oscillate ultrasonically for 2 hours, then dry them in an oven at 120-123°C for 6 hours, cool naturally, grind,...

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PUM

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Abstract

The invention discloses a preparation method of silicon carbide-carbon nano tube-montmorillonite compound-modified heat-resistant anti-static adhesive used for a filter. Deionized water is added intowater-based polyurethane dispersion, a mixture is stirred evenly, firstly, a small amount of acrylate monomer emulsion is added dropwise, heating is conducted, a redox reaction system is added dropwise, stirring is conducted for reaction, then residual monomer emulsion, modified montmorillonite, a silane coupling agent-modified nanometer silicon carbide and functional carbon nano tubes are added dropwise, stirring is conducted for reaction, cooling is conducted, a neutralizer sodium carbonate is added dropwise, then a wetting agent and a defoaming agent are added, and stirring and dischargingare conducted. The octadecyl trimethyl ammonium chloride-modified montmorillonite is used, montmorillonite interlayer spacing is enlarged, an intercalated structure or even an exfoliated structure canbe conveniently formed, nanometer dispersion of the modified montmorillonite is achieved in a matrix, dispersion is even, and the modified montmorillonite is in a completely exfoliated state so thatthe shearing strength, the tensile strength at break and elongation at break of the adhesive can be improved.

Description

technical field [0001] The invention belongs to the field of filter materials, and in particular relates to a method for preparing a heat-resistant and antistatic adhesive compound modified by silicon carbide-carbon nanotube-montmorillonite for filters. Background technique [0002] The filter is an important part of the engine. Its function is to filter out particles such as dust and mechanical impurities in the air, diesel oil, and engine oil entering the engine, so as to reduce the engine cylinder liner piston ring, crankshaft connecting rod kinematic pair and high-pressure oil pump plunger. Wear of even parts, optimize the combustion process of the engine, and reduce the emission of organic pollutants such as carbon monoxide. There are two main reasons for the failure of the filter: one is that the quality of the main raw material filter paper used to manufacture the filter is not good, the pore size is too large, the thickness is uneven, or the number of folds of the fi...

Claims

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Application Information

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IPC IPC(8): C09J151/08C09J11/04C08F283/00C08F220/18C08F220/14C08F220/06
CPCC08F283/006C08K2201/011C09J11/04C09J151/08C08K9/06C08K3/34C08K9/02C08K3/041C08K3/346C08F220/1804
Inventor 陈明志
Owner BENGBU CITY MINGWEI FILTER CO LTD