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Oil resistance foamable end cap sealing material and preparation method thereof

A technology of end cover sealing and oil resistance, which is applied in the fields of polymer molding processing, polymer sealing materials, and polymer blending, can solve the problems of filter scrapping, falling off, and reduced bonding strength between the filter element and the end cover, and achieves Effects of good oil resistance, heat aging resistance, and low emission performance

Inactive Publication Date: 2010-02-17
SHANGHAI HUA HUA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to solve the defects of plasticizer extraction and high-temperature degradation of polyvinyl chloride heat-cured glue, which leads to the decrease of the bonding strength between the filter element and the end cover or even falls off, causing the filter to be scrapped in advance, providing An oil-resistant foamable end cap sealing material and a preparation method thereof, which enable the prepared oil-resistant foamable end cap sealing material to be foamed and vulcanized with a paper core in a heated mold after punching, and are suitable for production Environmentally Friendly End Capless Elements for Air, Fuel and Oil Filters

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0030] Nitrile rubber NBR 100 parts

[0031] Sulfur S 3 parts

[0032] Accelerator DM 2 parts

[0033] Foaming agent AC 3 parts

[0034] Anti-aging agent RD 1 part

[0035] Anti-aging agent DNP 1 part

[0036] Liquid nitrile rubber LNBR 20 parts

[0037] Carbon black N550 20 parts

[0038] First, plasticize NBR with an open mill at a temperature of 40°C for 5 minutes; then mix NBR plastic rubber with S, DM, AC, RD / DNP, LNBR and N550 on an open mill at 60°C After kneading for 10 minutes, put it into a thick layer and pound it evenly to produce a sheet to obtain an oil-resistant foamable end cap sealing material.

Embodiment 2

[0040] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0041] Hydrogenated nitrile rubber HNBR 100 parts

[0042] Sulfur S 1 part

[0043] Peroxide DCP 5 parts

[0044] Accelerator D 1 part

[0045] Foaming agent AC 3 parts

[0046] Anti-aging agent RD 1 part

[0047] Anti-aging agent DNP 1 part

[0048] Liquid nitrile rubber LNBR 20 parts

[0049] Carbon black N774 20 parts

[0050] First, masticate HNBR with an open mixer, the mastication temperature is 40°C, and the time is 5 minutes; then, mix the HNBR masticated rubber with D, AC, RD / DNP, LNBR and N774 in an internal mixer at 60-100°C After 5 minutes of medium mixing, the material is discharged; the HNBR compound rubber is kneaded on a 40°C open mill, and cooled after being discharged; the cooled rubber is added to the 40°C open mill for re-milling 1. After making a triangular bag, put it into a thick pound and evenly release the sheet to obtain an oil-resis...

Embodiment 3

[0052] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0053] Carboxylated nitrile rubber XNBR 100 parts

[0054] Sulfur S 2 parts

[0055] Zinc oxide ZnO 3 parts

[0056] Accelerator D 2 parts

[0057] Foaming agent AC 3 parts

[0058] Anti-aging agent RD 1 part

[0059] Anti-aging agent DNP 1 part

[0060] Liquid nitrile rubber LNBR 20 parts

[0061] White carbon black SiO 2 ·nH 2 O 30 servings

[0062] Firstly, XNBR was masticated with an open mixer at a temperature of 40°C for 5 minutes; then the XNBR masticated rubber was mixed with S / ZnO, D, AC, RD / DNP, LNBR and SiO 2 ·nH 2 O kneaded on the open mill at 60°C for 10 minutes, then put it into a thicker form and pounded it evenly to take out the sheet to obtain an oil-resistant foamable end cap sealing material.

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Abstract

The invention discloses an oil resistance foamable end cap sealing material and a preparation method thereof. The method comprises the following steps: using butadiene-nitrile rubber, butadiene-nitrile hydride rubber, carboxylic butadiene-nitrile rubber or chloroprene rubber to plastify with an open mill, a internal mixer or a screw masticator and prepare plasticated rubber, then using plasticatedrubber, vulcanizer, foaming agent, anti-aging agent, softening oil, reinforcing agent and the like to mix with an open mill, a internal mixer or a screw masticator and prepare mixed rubber, then adopting the mixed rubber to prepare rubber sheets of the oil resistance foamable end cap sealing material through extruding, rolling and the like; using the rubber sheets and paper cores to perform vulcanization foaming and forming in heated moulds and demoulding to obtain integrated environmental filter element without end cap which can be used in the air, fuel oil or engine oil filter of the automobile engine. Compared with the widely used filter element with an end cap, the filter element without end cap can bear heat and oil and is lighter, and when the filter element without end cap reachesthe service life to be discarded, the filter element can be fully burned and does not cause environmental pollution.

Description

technical field [0001] The invention relates to an oil-resistant foamable end cap sealing material, more specifically to a composition and preparation method of an oil-resistant foamable end cap sealing material, which belongs to polymer blending, polymer molding processing, and polymer sealing materials field. Background technique [0002] Air filters, fuel filters, and oil filters are used to filter out mechanical impurities in the air, fuel, and oil entering gasoline and diesel engines, and to protect the engine crankshaft, connecting rod movement, precision parts and components of the fuel injection system. The cylinder liner and piston ring will not be worn out abnormally, and it is an indispensable part to make the economic index, power index, reliability and emission index of the engine play normally. In order to improve the long-term operation reliability of the engine, meet the increasingly stringent environmental regulations and the higher requirements of users fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L11/00C08L9/02C08L13/00C08L15/00C08K13/02C08J9/10
Inventor 林松涛王春博林岳江
Owner SHANGHAI HUA HUA RUBBER CO LTD
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