CN103509353A

CN103509353A - High and low temperature-resistant insulating sheath material for transformer and preparation method thereof

Info

Publication number: CN103509353A
Application number: CN201310401117.6A
Authority: CN
Inventors: 周俊; 徐淑平
Original assignee: ANHUI KELIN ELECTRONIC Co Ltd
Current assignee: ANHUI KELIN ELECTRONIC Co Ltd
Priority date: 2013-09-05
Filing date: 2013-09-05
Publication date: 2014-01-15
Anticipated expiration: 2033-09-05
Also published as: CN103509353B

Abstract

The invention discloses a high and low temperature-resistant insulating sheath material for a transformer and a preparation method thereof. The high and low temperature-resistant insulating sheath material is prepared from 70-90 weight parts of fluorosilicone rubber, 20-30 weight parts of SG-3-type PVC, 10-15 weight parts of dioctyl maleate, 5-10 weight parts of nylon acid diisobutyl ester, 15-20 weight parts of magnesium hydroxide, 10-15 weight parts of ammonium polyphosphate, 4-8 weight parts of molybdenum trioxide, 30-40 weight parts of fumed silica, 4-6 weight parts of zinc oxide, 2-3 weight parts of stearic acid, 1-2 weight parts of nano-cerium oxide, 1-2 weight parts of bis(P,P-bis-ethylhexyl diphosphato)ethanediolato titanate, 3-6 weight parts of oxidized polyethylene wax, 10-15 weight parts of brucite powder, 15-20 weight parts of nano-barite, 8-12 weight parts of nano-wollastonite and 4-6 weight parts of a composite filling material. The high and low temperature-resistant insulating sheath material has excellent high and low temperature resistance, good insulating properties, good physical and mechanical properties, good weathering aging resistance, acid and alkali resistance, radiation resistance and oil resistance, can be used in a temperature range of -60-180 DEG C for a long time, does not deform, embrittle and crack, and is durable.

Description

High-low temperature resistant insulating sheath material and preparation method thereof for a kind of transformer

Technical field

The present invention relates to high-low temperature resistant insulating sheath material and preparation method thereof for a kind of transformer, belong to sealing material technical field.

Background technology

Transformer insulated sheath is the shielding insulation protection for transformer bus bridge tube matrix face, can effectively stop exposed transformer bus bridge because people is personal injury and the short circuit accident that the animalcules such as false touch, birds and beasts or foreign matter overlap joint cause, prevent the electrical hazard that condensation flashover, pollution flashover, icicle clog snow cause, prevent the power outage that salt fog, acid rain and chemical gas corrosion damage transformer line.But existing transformer sheath material resistant of high or low temperature is poor, easily decomposes under high temperature, is even firing, under low temperature, easily there is embrittlement and peel off, thereby cause the accidents such as short circuit, electric leakage, power failure, cause huge financial loss.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, high-low temperature resistant insulating sheath material and preparation method thereof for a kind of transformer is provided.

The technical solution used in the present invention is as follows:

High-low temperature resistant insulating sheath material for a kind of transformer, raw material by following weight part is made: trifluoropropyl siloxane (FE2802) 70-90, SG-3 type PVC20-30, dioctyl maleate 10-15, diisobutyl ester of nylon acids 5-10, magnesium hydroxide 15-20, ammonium polyphosphate 10-15, molybdic oxide 4-8, gas-phase silica 30-40, zinc oxide 4-6, stearic acid 2-3, nano-cerium oxide 1-2, Di(dioctylpyrophosphato) ethylene titanate 1-2, oxidized polyethlene wax 3-6, brucite powder 10-15, nano barite 15-20, nano-silicon lime stone 8-12, compounded mix 4-6, dicumyl peroxide 0.5-1, iso-cyanuric acid triallyl ester 1-3, TM monex TM1-2, anti-aging agent OD1-2, antioxidant MB 0.5-1,

The preparation method of described compounded mix is as follows: a, take bauxitic clay, sepiolite, illite, kaolin mix by weight 4-8:3-6:2-4:1,510-530 ℃ of calcining 2-4h, being cooled to and putting into concentration after normal temperature is that the sulphuric acid soln of 10-15% stirs 2-3h under 1000-1500rpm, filter, washing is to neutral, dry, pulverize, cross 300-400 mesh sieve; B, the powder after sieving add water and stir and make the suspension that concentration is 40-50%, add the fatty alcohol-polyoxyethylene ether methacrylic ester of 0.5-1%, the water-soluble nano grade silica sol of the tripoly phosphate sodium STPP of 1-2%, 1-2%, the Sodium orthomolybdate of 2-3% and the urotropine of 1-2%, 4000-5000rpm high speed shear is disperseed 15-20min, is spray dried to powder; C, to adding the aromatic hydrocarbon oil of 4-8% in the above-mentioned powder making, the jade powder of 2-3%, the nano aluminum nitride of 1-2%, the glass fibre of the whiteruss of 3-5% and 1-2%, 2000-3000rpm speed lapping 10-15min.

The preparation method of high-low temperature resistant insulating sheath material for transformer, comprises the following steps:

(1) trifluoropropyl siloxane, dioctyl maleate, diisobutyl ester of nylon acids, magnesium hydroxide, ammonium polyphosphate, molybdic oxide, gas-phase silica, compounded mix being put into mill, is mixing 3-5min at 55-65 ℃ in roller temperature; Then adding SG-3 type PVC, zinc oxide, stearic acid, nano-cerium oxide, Di(dioctylpyrophosphato) ethylene titanate, brucite powder, nano barite, nano-silicon lime stone, is mixing 4-8min at 80-90 ℃ in roller temperature; Roller temperature drop is during to 40-50 ℃, then adds all the other raw materials, mixing 2-3min, thin-pass 7-9 time, slice;

(2) sheet stock is added in the mould of 160-180 ℃, with vulcanizing press, be forced into 12-18Mpa, sulfuration 15-20min, has vulcanized rear goods and be finished product after being up to the standards, repairing burr.

Beneficial effect of the present invention:

Resistant of high or low temperature of the present invention is excellent, there is the performances such as good insulating property, physical and mechanical properties, Weather-resistant, acid and alkali-resistance, radiation hardness, oil resistant, can be in-60 ℃ of-180 ℃ of temperature ranges life-time service, indeformable, not embrittlement, does not chap, durable in use, and good flame retardation effect, burning can not produce thick smoke, corrosive gases and other objectionable impurities, environmental protection completely.

Embodiment

High-low temperature resistant insulating sheath material for a kind of transformer, raw material by following weight (kg) is made: trifluoropropyl siloxane (FE2802) 80, SG-3 type PVC20, dioctyl maleate 10, diisobutyl ester of nylon acids 8, magnesium hydroxide 16, ammonium polyphosphate 12, molybdic oxide 6, gas-phase silica 35, zinc oxide 5, stearic acid 2, nano-cerium oxide 1, Di(dioctylpyrophosphato) ethylene titanate 1.5, oxidized polyethlene wax 4, brucite powder 12, nano barite 18, nano-silicon lime stone 10, compounded mix 5, dicumyl peroxide 0.8, iso-cyanuric acid triallyl ester 2, TM monex TM1.5, anti-aging agent OD1, antioxidant MB 1,

The preparation method of described compounded mix is as follows: a, take bauxitic clay, sepiolite, illite, kaolin mix by weight 5:4:3:1,510 ℃ of calcining 4h, being cooled to and putting into concentration after normal temperature is that 10% sulphuric acid soln stirs 2h under 1500rpm, filter, washing is to neutral, dry, pulverize, cross 400 mesh sieves; B, the powder after sieving add water and stir that to make concentration be 50% suspension, add fatty alcohol-polyoxyethylene ether methacrylic ester, 1% tripoly phosphate sodium STPP, 1% the water-soluble nano grade silica sol, 2% Sodium orthomolybdate and 1.5% the urotropine that are equivalent to powder weight 0.6%, 4000rpm high speed shear is disperseed 18min, is spray dried to powder; C, to adding 5% aromatic hydrocarbon oil, 2% jade powder, 1.5% nano aluminum nitride, 4% whiteruss and 1.5% glass fibre, 3000rpm speed lapping 10min in the above-mentioned powder making.

(1) trifluoropropyl siloxane, dioctyl maleate, diisobutyl ester of nylon acids, magnesium hydroxide, ammonium polyphosphate, molybdic oxide, gas-phase silica, compounded mix being put into mill, is mixing 4min at 60 ℃ in roller temperature; Then adding SG-3 type PVC, zinc oxide, stearic acid, nano-cerium oxide, Di(dioctylpyrophosphato) ethylene titanate, brucite powder, nano barite, nano-silicon lime stone, is mixing 6min at 85 ℃ in roller temperature; During roller temperature drop to 45 ℃, then add all the other raw materials, mixing 3min, thin-pass 8 times, slice;

(2) sheet stock is added in the mould of 175 ℃, with vulcanizing press, be forced into 16Mpa, sulfuration 16min, has vulcanized rear goods and be finished product after being up to the standards, repairing burr.

The performance test results of the sheath material making is as follows:

Claims

1. high-low temperature resistant insulating sheath material for a transformer, it is characterized in that, raw material by following weight part is made: trifluoropropyl siloxane (FE2802) 70-90, SG-3 type PVC 20-30, dioctyl maleate 10-15, diisobutyl ester of nylon acids 5-10, magnesium hydroxide 15-20, ammonium polyphosphate 10-15, molybdic oxide 4-8, gas-phase silica 30-40, zinc oxide 4-6, stearic acid 2-3, nano-cerium oxide 1-2, Di(dioctylpyrophosphato) ethylene titanate 1-2, oxidized polyethlene wax 3-6, brucite powder 10-15, nano barite 15-20, nano-silicon lime stone 8-12, compounded mix 4-6, dicumyl peroxide 0.5-1, iso-cyanuric acid triallyl ester 1-3, TM monex TM 1-2, anti-aging agent OD 1-2, antioxidant MB 0.5-1,

2. the preparation method of high-low temperature resistant insulating sheath material for transformer as claimed in claim 1, is characterized in that comprising the following steps:

Trifluoropropyl siloxane, dioctyl maleate, diisobutyl ester of nylon acids, magnesium hydroxide, ammonium polyphosphate, molybdic oxide, gas-phase silica, compounded mix are put into mill, are mixing 3-5min at 55-65 ℃ in roller temperature; Then adding SG-3 type PVC, zinc oxide, stearic acid, nano-cerium oxide, Di(dioctylpyrophosphato) ethylene titanate, brucite powder, nano barite, nano-silicon lime stone, is mixing 4-8min at 80-90 ℃ in roller temperature; Roller temperature drop is during to 40-50 ℃, then adds all the other raw materials, mixing 2-3min, thin-pass 7-9 time, slice;