Formula of nitrile rubber pad for sealing transformer oil

A technology of nitrile rubber and transformer oil, applied in chemical instruments and methods, and other chemical processes, can solve problems such as surface cracks, loss of sealing performance, and transformer oil leakage, so as to improve aging resistance, prolong service life, The effect of solving the leakage problem
CN102807690AInactive Publication Date: 2012-12-05保定市新科橡胶制品研究所
1 Cites 13 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
保定市新科橡胶制品研究所
Publication Date
2012-12-05
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a formula of a nitrile rubber pad for sealing transformer oil, and belongs to the technical field of rubber sealing materials for transformers. The formula adopts the following technical scheme: the nitrile rubber pad comprises the following components by weight percent: 65-68% of carbon black N330, 5-17% of dioctyl adipate DOA, 10-13% of zinc oxide, 1-1.5% of stearic acid, 1-2% of antioxidant RD, 1-2% of antioxidant MB, 3-5% of vulcanizing agent DCP (dicumyl peroxide) and 2-4% of vulcanizing agent TAIC (triallyl isocyanurate), based on 100% of nitrile rubber 3365. All the materials in the formula are conventional materials which can be purchased in the market. The nitrile rubber pad for the production process and the background technology is not changed but the added raw materials and the proportions are different. The formula has the positive benefits as follows: the ageing-resistant performance of the materials is improved on the premise of guaranteeing the physical performance, the service life is prolonged, the requirement of the 30-year service life of a transformer is met, and the problem of leakage caused by ageing of the nitrile rubber pad is solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a formula of nitrile rubber pad used for sealing transformer oil, belonging to the technical field of rubber sealing materials for transformers. Background technique

[0002] At present, the rubber sealing materials used in transformers mainly include nitrile rubber, acrylic rubber, fluororubber, neoprene rubber, fluorosilicone rubber, silicone rubber, ethylene propylene rubber, etc. The excellent oil resistance and good processability of nitrile rubber make it still the most widely used rubber sealing material in transformers. However, the molecular chain of nitrile rubber contains unsaturated double bonds, which determines that it is susceptible to oxidation by ozone, oxygen, etc., and this oxidation is more obvious under high temperature conditions during transformer operation. Under the action of oxidation, the nitrile rubber gasket gradually ages, mainly manifested as further crosslinking between molecules, the material g...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More