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Preparation method of filter cleaner rubber slice

A filter and film technology, which is applied in the field of filter film preparation, can solve the problems of short service life, waste, and limited use of filters, and achieve good low-temperature impact resistance, improved service life, and good dimensional stability sexual effect

Active Publication Date: 2018-12-18
长春峰泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cyano group content in nitrile rubber will affect the impact strength, resilience, cold resistance and other properties of the adhesive, affecting the field of use and service life
Especially for the air filter, the adhesive used is epoxy resin as the main raw material. This type of adhesive is a liquid adhesive, which must be fully stirred before use, and then dipped, sprayed, brushed Coating method, roller coating method, transfer method and other methods are used, so the process is relatively complicated, and it is easy to cause uneven distribution of adhesive and waste; moreover, the adhesive is very brittle after curing and is not resistant to impact. Easily damaged during processing, transportation and installation, resulting in short filter life
Moreover, because the cyano group is easily polarized under the action of an electric field, the breakdown voltage of the film is reduced, resulting in a decrease in the dielectric properties and heat resistance of the film, which limits its use in the automotive field.

Method used

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  • Preparation method of filter cleaner rubber slice
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Examples

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preparation example Construction

[0018] In order to solve the above technical problems, the first aspect of the present invention provides a method for preparing filter film, which at least includes the following steps:

[0019] Put the nitrile rubber and phenolic resin into the mixer, control the temperature at 60~100℃, mix for 1~5min, add additives to it, continue mixing for 1~5min, add vulcanizing agent, The curing agent and curing accelerator are mixed in two stages for 1 to 5 minutes; the mixed rubber is placed at room temperature for 6 to 24 hours, and then vulcanized at 220 to 270°C for 1 to 3 minutes to obtain the filter film.

[0020] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance and strong adhesion. But long-term performance in sour gasoline and high temperature environment is not good, and the dimensional stability at high temperatur...

Embodiment 1

[0051] Embodiment 1 provides a method for preparing filter film, including the following steps:

[0052] Put 35g nitrile rubber and 77g phenolic resin into the mixer, control the temperature at 80℃, mix for 1min, add 0.6g antioxidant ODA (4,4'-dioctyldiphenylamine), 0.4g stearic acid , 0.4g zinc stearate, continue mixing for 2 minutes and then discharge the rubber. After the rubber is cooled, perform two-stage mixing. During the second-stage mixing, add 0.3g sulfur, 0.5g 2-mercaptobenzothiazole, 0.4g Dibenzothiazole disulfide and 5g of hexamethylenetetramine curing agent mixed with dicumyl peroxide are mixed in two stages for 5 minutes; the mixed compound is placed at room temperature for 12 hours, and then at 250°C After vulcanizing for 1 min, the filter film is obtained by debinding, forming and cutting.

[0053] The nitrile rubber is NBR 1704 brand rubber with an acrylonitrile content of 17-20%, purchased from Lanzhou Chemical Industry Company; the phenolic resin is a linear bi...

Embodiment 2

[0055] Embodiment 2 provides a method for preparing filter film, including the following steps:

[0056] Put 35g nitrile rubber and 52g phenolic resin into the mixer, control the temperature at 60℃, mix for 1min, add 0.6g antioxidant ODA (4,4'-dioctyldiphenylamine), 0.4g stearic acid , 0.4g zinc stearate, continue mixing for 1 minute and then discharge the rubber. After the rubber is cooled, perform two-stage mixing. During the second-stage mixing, add 0.3g sulfur, 0.5g 2-mercaptobenzothiazole, 0.4g Dibenzothiazole disulfide, 5g of hexamethylenetetramine curing agent mixed with dicumyl peroxide for two-stage mixing, mixing for 1 minute; the mixed compound is placed at room temperature for 6 hours, and then at 220 ℃ After vulcanizing for 3 minutes, the filter film is obtained by debinding, forming, and cutting.

[0057] The nitrile rubber is NBR 1704 brand rubber with an acrylonitrile content of 17-20%, purchased from Lanzhou Chemical Industry Company; the phenolic resin is a linea...

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PUM

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Abstract

The invention relates to the field of automobile filter cleaner, and in particular, relates to a preparation method of a filter cleaner rubber slice. The preparation method at least includes the following steps: putting butadiene-acrylonitrile rubber and phenolic resin into a mixer, controlling the temperature to be 60-100 DEG C, mixing for 1-5 min, adding an auxiliary agent to the mixture, continuing to mix for 1-5 min, adding a vulcanizing agent, a curing agent and a curing accelerator to a rubber material after the rubber material is cooled, carrying out secondary mixing, and mixing for 1-5min; and placing the mixed rubber material at room temperature for 6-24 h, then vulcanizing for 1-3 min at the temperature of 220-270 DEG C, and thus obtaining the filter cleaner rubber slice.

Description

Technical field [0001] The invention relates to the field of automobile filters, in particular to a method for preparing filter films. Background technique [0002] Since the United States published the first phenolic-nitrile rubber hot-vulcanized adhesive Metlbond 4021 in 1943, it has a history of 70 years and is still widely used in aircraft manufacturing. The reason why the phenolic-nitrile rubber thermal vulcanization adhesive can maintain this position is related to its low price and other excellent properties, such as bonding various metal materials with high physical and mechanical properties in a relatively wide temperature range ; It has good elasticity and toughness, so it has good peel strength, impact strength and fatigue performance; it has excellent thermal aging and atmospheric aging performance; it has excellent solvent resistance and salt spray resistance. However, when a novolac resin with good heat resistance, flame retardancy, electrical insulation and mechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L61/14C08L15/00
CPCC08J5/18C08J2361/14C08J2415/00
Inventor 冯俊山刘冬梅冯笑男
Owner 长春峰泰科技有限公司
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