Oil-resistant low-temperature-resistant weather-proof rubber sealing material and preparation method and application thereof

A technology of rubber sealing and low temperature resistance, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems that do not involve low temperature resistance, oil resistance, ozone resistance and compression permanent deformation resistance, and achieve easy industrial promotion, good oil resistance, Good oil resistance

Active Publication Date: 2014-10-08
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention is only a blend of polyurethane elastomer and rubber, and does not involve co-vulcanization between the two. In addition, the material of this invention does not involve performance characteristics such as low temperature resistance, oil resistance, ozone resistance, and compression set resistance.
[0009] The above patents or patent applications do not involve the composite material with polyether type mixing polyurethane as the main continuous phase and nitrile rubber or epichlorohydrin rubber as the dispersed phase under the condition of co-vulcanization

Method used

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  • Oil-resistant low-temperature-resistant weather-proof rubber sealing material and preparation method and application thereof
  • Oil-resistant low-temperature-resistant weather-proof rubber sealing material and preparation method and application thereof
  • Oil-resistant low-temperature-resistant weather-proof rubber sealing material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The oil-resistant, low-temperature and weather-resistant rubber sealing material formula of table 2 embodiment 1

[0044] Polyether Mixable Polyurethane

90

Nitrile rubber NBR1846

5

N660 General Purpose Carbon Black

60

Plasticizer TP95 (di(butoxyethoxyethyl) adipate)

5

stearic acid

0.5

Antisticking agent IM-1 (fatty acid calcium soap)

1.5

Antiaging agent RD (2,2,4-trimethyl-1,2-dihydroquinoline polymer)

1.5

Antiaging agent 445 (diphenylamine substituted derivatives)

0.5

Antiaging Agent MB (2-Mercaptobenzimidazole)

0.5

DCP (dicumyl peroxide)

1.5

R153D (1,2-polybutadiene)

3

[0045] According to the formula shown in the above table 2, the raw materials are mixed on the open mill to obtain the rubber compound, and the mixing method is as follows:

[0046] (1) Pass the polyether type mixing type polyurethane thin pass 7 to 10 times, and the nitrile...

Embodiment 2

[0053] The oil-resistant, low-temperature and weather-resistant rubber sealing material formula of table 4 embodiment 2

[0054] Polyether Mixable Polyurethane

80

Nitrile rubber NBR1846

20

N660 General Purpose Carbon Black

60

Plasticizer TP95 (di(butoxyethoxyethyl) adipate)

5

stearic acid

0.5

Antisticking agent IM-1 (fatty acid calcium soap)

1.5

Antiaging agent RD (2,2,4-trimethyl-1,2-dihydroquinoline polymer)

1.5

Antiaging agent 445 (diphenylamine substituted derivatives)

0.5

Antiaging Agent MB (2-Mercaptobenzimidazole)

0.5

DCP (dicumyl peroxide)

1.5

R153D (1,2-polybutadiene)

3

[0055] According to the formula shown in the above table 4, the raw materials are mixed on an open mill to obtain a rubber compound, and the mixing method is as follows:

[0056] (1) Pass the polyether type mixing type polyurethane thin pass 7 to 10 times, and the nitrile r...

Embodiment 3

[0062] The oil-resistant, low-temperature and weather-resistant rubber sealing material formula of table 6 embodiment 3

[0063] Polyether Mixable Polyurethane

70

Nitrile rubber NBR1846

30

N660 General Purpose Carbon Black

60

Plasticizer TP95 (di(butoxyethoxyethyl) adipate)

5

stearic acid

0.5

Antisticking agent IM-1 (fatty acid calcium soap)

1.5

Antiaging agent RD (2,2,4-trimethyl-1,2-dihydroquinoline polymer)

1.5

Antiaging agent 445 (diphenylamine substituted derivatives)

0.5

Antiaging Agent MB (2-Mercaptobenzimidazole)

0.5

DCP (dicumyl peroxide)

1.5

R153D (1,2-polybutadiene)

3

[0064] According to the formula shown in the above table 6, the raw materials are mixed on an open mill to obtain a rubber compound, and the mixing method is as follows:

[0065] (1) Pass the polyether type mixing type polyurethane thin pass 7 to 10 times, and the nitrile r...

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Abstract

The invention belongs to the technical field of high molecular material, and discloses an oil-resistant low-temperature-resistant weather-proof rubber sealing material and a preparation method thereof. The rubber sealing material is prepared by taking millable polyurethane as a main material, adopting a small amount of nitrile rubber or epichloro-hydrin rubber, cooperatively adding a reinforcing agent, a plasticizer, an anti-sticking agent, a mold-release agent, an acid absorbing agent, a ketoamine anti-aging agent, a diphenylamine anti-aging agent, an imidazole anti-aging agent, a peroxide, an auxiliary cross-linking agent and other auxiliary materials, and mixing through an open mill or an internal mixer. A sealing product prepared by the rubber sealing material has better balance between low-temperature resistance and oil resistance, enables the glass transition temperature Tg to reach -40 DEG C or less, has excellent weather aging resistance performance, also has good comprehensive performance, and is long in service life.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an oil-resistant, low-temperature-resistant and weather-resistant rubber sealing material and its preparation method and application. technical background [0002] The seal is one of the important components of the sealing device, and its performance determines the operating conditions of the machine where the sealing device is installed. In cold regions, the requirements for low temperature resistance of seals are high, and low temperature resistance and oil resistance are a pair of contradictions. The oil resistance referred to here is mainly for lubricating oil, hydraulic oil and other oils with weak molecular polarity. According to the principle of similarity and compatibility, the stronger the polarity of rubber molecules, the poorer the permeability of small molecule oils to it, and the better the oil resistance, and the stronger the molecular polarity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L9/02C08L71/03C08K13/02C08K3/04C08K5/14C08K3/22C09K3/10
Inventor 肖风亮王勇陈朝晖刘建文
Owner GUANGZHOU MECHANICAL ENG RES INST
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