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Oil-resistant liquid sealant and preparation method thereof

A sealant, liquid technology, used in chemical instruments and methods, adhesives, adhesive types, etc., can solve the problem of poor mechanical properties of chlorosulfonated polyethylene rubber, poor adhesion and aging resistance, fluorine rubber. Low solubility and other problems, to achieve the effects of superior medium resistance and mechanical properties, moderate adhesion, and good workability

Active Publication Date: 2014-02-26
GLEIHOW NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, nitrile rubber, chlorosulfonated polyethylene rubber and fluororubber have good oil and solvent resistance. Chlorosulfonated polyethylene rubber has poor mechanical properties and poor cold resistance, and fluororubber has low solubility and is not suitable for solvent-based rubber. Adhesive
[0004] At present, the adhesives that appear on the market generally have problems such as low medium resistance, poor mechanical properties, unsatisfactory adhesion and aging resistance, complicated rubber mixing process, and low production efficiency.

Method used

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  • Oil-resistant liquid sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Oil-resistant liquid sealant, which includes the following components: nitrile rubber (42% acrylonitrile content), tackifying resin, reinforcing filler, titanium dioxide, anti-aging agent, solvent. Its weight percentage content is as follows: 18%, 3%, 32%, 2%, 0.5%, 44.5%.

[0035] The tackifying resin contains super tackifying resin and tert-butyl phenolic resin, and its weight ratio is: 1:2.

[0036] The reinforcing filler contains talcum powder, magnesium oxide, zinc oxide and fumed white carbon black, and its weight ratio is: 20:3:7:2.

[0037] The anti-aging agent contains anti-aging agent BLE and anti-aging agent KY-405, and their weight ratio is: 0.2:0.3.

[0038] The solvents are acetone, xylene, and N,N-dimethylformamide, and their weight ratios are: 3:7:1.

[0039] The preparation method of the above-mentioned oil-resistant liquid sealant comprises the following steps in turn:

[0040] a. First put the nitrile rubber into the rubber mixer to plasticize it i...

Embodiment 2

[0048] Oil-resistant liquid sealant, which includes the following components: nitrile rubber (acrylonitrile content 40%), tert-butyl phenolic resin, reinforcing filler, titanium dioxide, anti-aging agent BLE, solvent. Its weight percentage content is: 20%, 2.5%, 30%, 4%, 0.2%, 43.3%.

[0049] The reinforcing filler contains talc powder, activated magnesia and fumed white carbon black, the weight ratio of which is 25:2:3.

[0050] The solvent contains xylene and 1,4-dioxane in a weight ratio of 7:3.

[0051] The preparation method is the same as in Example 1. This method is used to prepare peelable oil-resistant liquid sealant.

Embodiment 3

[0053] Oil-resistant liquid sealant, which includes the following components: nitrile rubber (35% acrylonitrile content), tert-butyl phenolic resin, reinforcing filler, titanium dioxide, anti-aging agent BLE, solvent. Its weight percentage content is as follows: 22%, 2%, 30%, 2%, 0.2%, 43.8%.

[0054] The reinforcing filler contains talcum powder, magnesium oxide, zinc oxide and fumed white carbon black, and its weight ratio is: 18:3:7:2.

[0055] The solvent contains xylene and tetrahydrofuran, and its weight ratio is: 8:2.

[0056] The preparation method is the same as in Example 1. This method is used to prepare peelable oil-resistant liquid sealant.

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Abstract

The invention belongs to a sealant, and particularly relates to a solvent type oil-resistant liquid sealant and a preparation method thereof. The solvent type oil-resistant liquid sealant comprises the following components: 15-30% of nitrile rubber, 2-5% of tackifying resin, 20-45% of reinforcing filler, 0-5% of pigment, 0.5-2% of antiager and 0-60% of solvent. The preparation method comprises the following steps: firstly putting the nitrile rubber into a rubber refining machine, plasticizing so as to form a thin film and cutting the thin film into pieces for standby application; putting the weighed solvent, filler and pigment into a reaction kettle in proportions, stirring for about 1 hour at a high speed, then putting the tackifying resin and the antiager into the reaction kettle, stirring, putting the treated nitrile rubber into the reaction kettle, stirring for about 4-5 hours at a high speed, after dissolving materials into a bright white uniform viscous glue solution, cooling and carrying out vacuum defoaming so as to obtain the oil-resistant liquid sealant. The oil-resistant liquid sealant is convenient to use and has excellent pressure-resistant property, medium-resistant property and endurance property.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a solvent-based oil-resistant liquid sealant and a preparation method. Background technique [0002] Liquid sealants are also called liquid gaskets, liquid gaskets, liquid gaskets, etc., and generally use rubber, synthetic resin or modified oil as the main component, and then add plasticizers, stabilizers, fillers, pigments, solvents and other components. made. It is a viscous flowing liquid at room temperature. It is applied on the joint surface of metal equipment. After a period of drying, the joint surface is fastened and clamped with screws to form a uniform, continuous and stable elastic film. Prevent the leakage of water, gas, oil, acid, alkali, organic solvent and other substances, and at the same time, it can withstand certain pressure and temperature. [0003] Rubber is the benchmark material for solvent-based liquid sealants, commonly used are neoprene rubber, nit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J109/02C09J165/00C09J11/04C09K3/10
Inventor 田学深杨猛乔雪冬周树柏黄金辉
Owner GLEIHOW NEW MATERIALS CO LTD
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