CN102796376A - Corona-resistant composition and preparation method thereof - Google Patents
Corona-resistant composition and preparation method thereof Download PDFInfo
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- CN102796376A CN102796376A CN201210317139XA CN201210317139A CN102796376A CN 102796376 A CN102796376 A CN 102796376A CN 201210317139X A CN201210317139X A CN 201210317139XA CN 201210317139 A CN201210317139 A CN 201210317139A CN 102796376 A CN102796376 A CN 102796376A
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Abstract
The invention discloses a corona-resistant composition containing polyimide, nano-alumina and nano-montmorillonite and a preparation method of the corona-resistant composition, belonging to the technical field of corona-resistant materials. The composition consists of the following components in parts by weight: 140-180 parts of polyimide, 1-1.5 parts of nano-alumina, 4-8 parts of nano-montmorillonite, 1-5 parts of nano-mica, 1-5 parts of butadienyl triethoxysilane and 0.5-1 part of dispersant. The corona-resistant composition can be prepared into a high-temperature-resistant and corona-resistant polyimide thin film, the corona resistance time is over 120,000 hours, and the piezoelectric resistance strength and the variable frequency voltage resistance are greatly improved.
Description
Technical field
The invention belongs to the material technology of anti-corona field, be specifically related to a kind of composition and method of making the same of anti-corona that contains polyimide, nano aluminium oxide and nano imvite.
Background technology
Polyimide is meant a base polymer that contains imide ring on the main chain, and is wherein important with the polymkeric substance that contains the phthalimide structure.Polyimide has following good performance: can be high temperature resistant, and thermostability is high; Have good mechanical property, the tensile strength of unfilled plastics is all more than 100Mpa; Have very high radiation-resistant property, its film is 5 * 10
9Strength retention is 90% behind the fast electron irradiation of rad; Have excellent dielectric properties, specific inductivity is about 3.4, introduces fluorine, or the air nano-scale is dispersed in the polyimide, and specific inductivity can drop to about 2.5, and dielectric loss is 10
-3, dielectric strength is 100-300KV/mm, and extensively becoming TPI is 300KV/mm, and volume resistance is 1017 Ω cm.These good performances make pi be suitable as the organic film of electrical apparatus insulation.
Though present polyimide is high temperature resistant and anti-corona,, can not adapt to high voltage strength and frequency conversion voltage, reduced the work-ing life of high pressure or frequency conversion electrical equipment.Add anti-high pressure nano particle and can improve compressive strength, nano aluminium oxide, nano imvite and nano mica can both improve reactance voltage intensity, and the mixing result of use is better.
Summary of the invention
The objective of the invention is to overcome the defective of the above-mentioned pi of anti-corona film, propose a kind of composition and method of making the same of anti-the corona, improve the ultimate compression strength and the resistance frequency ability of the pi of anti-corona film.
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: pi 140-180 part, nano aluminium oxide 1-1.5 part, nano imvite 4-8 part, nano mica 1-5 part, butadienyl triethoxyl silane 1-5 part, dispersion agent 0.5-1 part.
Said dispersion agent is styrene-butadiene block copolymer, triethyl hexyl phosphoric acid, derivatived cellulose or SEPIGEL 305.
Said derivatived cellulose is cellulose nitrate, Vladipor UAM 500, cellulose acetate butyrate, methylcellulose gum, CMC 99.5, TKK 021, Natvosol, hydroxypropylcellulose, Vltra tears or cellulose xanthate.
The size of said nano aluminium oxide is the 50-15000 nanometer.
The size of said nano imvite is the 50-10000 nanometer.
The size of said nano mica is the 150-20000 nanometer.
Above-mentioned anti-corona preparation of compositions method is characterized in that, carries out according to following steps:
(1) get nano aluminium oxide 1-1.5 part by weight, nano imvite 4-8 part, nano mica 1-5 part, butadienyl triethoxyl silane 1-5 part and dispersion agent 0.5-1 part add solvent 80-200 part, stir, and process slurry;
(2) will wait aromatic diamine, the tetracarboxylic dianhydride of parts by weight to join successively in the slurry of preparation in the step (1), be heated to 30-80 ℃ of initiated polymerization, stir 0.1-24h, make composite mortar;
(3) composite mortar is heated to 80-200 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Said aromatic diamine is mphenylenediamine, Ursol D, 3,3 '-tolidine, 2,5-diaminotoluene, 4,4 '-diaminobenzophenone or 2, a kind of in 4-diamino--6-toluene(mono)chloride.
Said tetracarboxylic dianhydride is 3,3 ', 4,4 '-benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride, 3,3 ', 4; 4 '-biphenyl tetracarboxylic dianhydride, 2,2 ', 3,3 '-biphenyl tetracarboxylic dianhydride, 1,4,5; 8-naphthalene tetracarboxylic acid dianhydride, 1,2,5,6-naphthalene tetracarboxylic acid dianhydride, phenanthrene-1,8; 9,10-tetracarboxylic dianhydride or benzene-1,2,3,4-tetracarboxylic dianhydride.
Said solvent is N or N-Methyl pyrrolidone.
Beneficial effect of the present invention: the compsn of anti-corona the of the present invention, can be made into high temperature resistant and the pi of anti-corona film, its anti-corona time is more than 120,000 hours, resistance to compression electric strength and resistance voltage capability have frequently had significantly raising.
Embodiment
Below in conjunction with specific embodiment the present invention is further specified.
Embodiment 1
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: 140 parts of pis, 1.2 parts of nano aluminium oxides, 4 parts of nano imvites, 2 parts of nano micas, 3 parts of butadienyl triethoxyl silanes, 0.5 part of triethyl hexyl phosphoric acid.
Above-mentioned anti-corona preparation of compositions method:
(1) get 1.2 parts of nano aluminium oxides by weight, 4 parts of nano imvites, 2 parts of nano micas, 3 parts of butadienyl triethoxyl silanes and dispersion agent 0.5-1 part add N 80-200 part, stir, and process slurry;
(2) 70 parts of aromatic diamines, 70 parts of tetracarboxylic dianhydrides are joined in the slurry of preparation in the step (1) successively, be heated to 30 ℃ of initiated polymerizations, stir 0.5h, make composite mortar;
(3) composite mortar is heated to 80 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Embodiment 2
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: 150 parts of pis, 1.0 parts of nano aluminium oxides, 6 parts of nano imvites, 1 part of nano mica, 4 parts of butadienyl triethoxyl silanes, 0.6 part of styrene-butadiene block copolymer.
Above-mentioned anti-corona preparation of compositions method:
(1) get 1.0 parts of nano aluminium oxides by weight, 6 parts of nano imvites, 1 part of nano mica, 4 parts of butadienyl triethoxyl silanes, 0.6 part of styrene-butadiene block copolymer adds N-Methyl pyrrolidone 80-200 part, stirs, and processes slurry;
(2) 75 parts of aromatic diamines, 75 parts of tetracarboxylic dianhydrides are joined in the slurry of preparation in the step (1) successively, be heated to 50 ℃ of initiated polymerizations, stir 2h, make composite mortar;
(3) composite mortar is heated to 90 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Embodiment 3
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: 160 parts of pis, 1.3 parts of nano aluminium oxides, 5 parts of nano imvites, 5 parts of nano micas, 3 parts of butadienyl triethoxyl silanes, 1 part of SEPIGEL 305.
Above-mentioned anti-corona preparation of compositions method:
(1) get 1.3 parts of nano aluminium oxides by weight, 5 parts of nano imvites, 5 parts of nano micas, 3 parts of butadienyl triethoxyl silanes, 1 part of SEPIGEL 305 adds N 80-200 part, stirs, and processes slurry;
(2) 80 parts of aromatic diamines, 80 parts of tetracarboxylic dianhydrides are joined in the slurry of preparation in the step (1) successively, be heated to 70 ℃ of initiated polymerizations, stir 8h, make composite mortar;
(3) composite mortar is heated to 120 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Embodiment 4
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: 180 parts of pis, 1.5 parts of nano aluminium oxides, 8 parts of nano imvites, 5 parts of nano micas, 5 parts of butadienyl triethoxyl silanes, 1 part of Vladipor UAM 500.
Above-mentioned anti-corona preparation of compositions method:
(1) get 1.5 parts of nano aluminium oxides by weight, 8 parts of nano imvites, 5 parts of nano micas, 5 parts of butadienyl triethoxyl silanes, 1 part of Vladipor UAM 500 adds N-Methyl pyrrolidone 80-200 part, stirs, and processes slurry;
(2) 90 parts of aromatic diamines, 90 parts of tetracarboxylic dianhydrides are joined in the slurry of preparation in the step (1) successively, be heated to 75 ℃ of initiated polymerizations, stir 10h, make composite mortar;
(3) composite mortar is heated to 150 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Embodiment 5
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: 170 parts of pis, 1.3 parts of nano aluminium oxides, 6 parts of nano imvites, 3 parts of nano micas, 4 parts of butadienyl triethoxyl silanes, 0.8 part of Vladipor UAM 500.
Above-mentioned anti-corona preparation of compositions method:
(1) get 1.3 parts of nano aluminium oxides by weight, 6 parts of nano imvites, 3 parts of nano micas, 4 parts of butadienyl triethoxyl silanes, 0.8 part of Vladipor UAM 500 adds N 80-200 part, stirs, and processes slurry;
(2) 85 parts of aromatic diamines, 85 parts of tetracarboxylic dianhydrides are joined in the slurry of preparation in the step (1) successively, be heated to 60 ℃ of initiated polymerizations, stir 16h, make composite mortar;
(3) composite mortar is heated to 140 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Embodiment 6
A kind of compsn of anti-the corona is made up of following compositions in portion by weight: 160 parts of pis, 1.2 parts of nano aluminium oxides, 6 parts of nano imvites, 3 parts of nano micas, 4 parts of butadienyl triethoxyl silanes, 0.8 part of hydroxypropylcellulose.
Above-mentioned anti-corona preparation of compositions method:
(1) get 1.2 parts of nano aluminium oxides by weight, 6 parts of nano imvites, 3 parts of nano micas, 4 parts of butadienyl triethoxyl silanes, 0.8 part of hydroxypropylcellulose adds N 80-200 part, stirs, and processes slurry;
(2) 80 parts of aromatic diamines, 80 parts of tetracarboxylic dianhydrides are joined in the slurry of preparation in the step (1) successively, be heated to 60 ℃ of initiated polymerizations, stir 11h, make composite mortar;
(3) composite mortar is heated to 180 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
Claims (10)
1. the compsn of anti-the corona is characterized in that, is made up of following compositions in portion by weight: pi 140-180 part; Nano aluminium oxide 1-1.5 part, nano imvite 4-8 part, nano mica 1-5 part; Butadienyl triethoxyl silane 1-5 part, dispersion agent 0.5-1 part.
2. according to the said a kind of compsn of anti-corona of claim 1, it is characterized in that said dispersion agent is styrene-butadiene block copolymer, triethyl hexyl phosphoric acid, derivatived cellulose or SEPIGEL 305.
3. according to the said a kind of compsn of anti-corona of claim 2; It is characterized in that said derivatived cellulose is cellulose nitrate, Vladipor UAM 500, cellulose acetate butyrate, methylcellulose gum, CMC 99.5, TKK 021, Natvosol, hydroxypropylcellulose, Vltra tears or cellulose xanthate.
4. according to the said a kind of compsn of anti-corona of claim 1, it is characterized in that the size of said nano aluminium oxide is the 50-15000 nanometer.
5. according to the said a kind of compsn of anti-corona of claim 1, it is characterized in that the size of said nano imvite is the 50-10000 nanometer.
6. according to the said a kind of compsn of anti-corona of claim 1, it is characterized in that the size of said nano mica is the 150-20000 nanometer.
7. the said anti-corona preparation of compositions method of claim 1 is characterized in that, carries out according to following steps:
(1) get nano aluminium oxide 1-1.5 part by weight, nano imvite 4-8 part, nano mica 1-5 part, butadienyl triethoxyl silane 1-5 part and dispersion agent 0.5-1 part add solvent 80-200 part, stir, and process slurry;
(2) will wait aromatic diamine, the tetracarboxylic dianhydride of parts by weight to join successively in the slurry of preparation in the step (1), be heated to 30-80 ℃ of initiated polymerization, stir 0.1-24h, make composite mortar;
(3) composite mortar is heated to 80-200 ℃, the degassing, imidization reaction takes place in drying, obtains the compsn of anti-the corona.
8. according to the said anti-corona preparation of compositions method of claim 7, it is characterized in that said aromatic diamine is mphenylenediamine, Ursol D, 3; 3 '-tolidine, 2; 5-diaminotoluene, 4,4 '-diaminobenzophenone or 2, a kind of in 4-diamino--6-toluene(mono)chloride.
9. according to the said anti-corona preparation of compositions method of claim 7, it is characterized in that said tetracarboxylic dianhydride is 3,3 ', 4,4 '-benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride, 3; 3 ', 4,4 '-biphenyl tetracarboxylic dianhydride, 2,2 ', 3,3 '-biphenyl tetracarboxylic dianhydride, 1; 4,5,8-naphthalene tetracarboxylic acid dianhydride, 1,2,5,6-naphthalene tetracarboxylic acid dianhydride, phenanthrene-1; 8,9,10-tetracarboxylic dianhydride or benzene-1,2,3,4-tetracarboxylic dianhydride.
10. according to the said anti-corona preparation of compositions method of claim 7, it is characterized in that said solvent is N or N-Methyl pyrrolidone.
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| CN103589153A (en) * | 2013-11-08 | 2014-02-19 | 苏州市双赢包装材料有限公司 | Preparation method of antibacterial composite film material |
| CN104968722A (en) * | 2012-12-12 | 2015-10-07 | 日产化学工业株式会社 | Composition, liquid crystal alignment treatment agent, liquid crystal alignment film, and liquid crystal display element |
| CN105694036A (en) * | 2016-03-18 | 2016-06-22 | 江苏亚宝绝缘材料股份有限公司 | Polyimide resin doped with alumina oxide |
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Application publication date: 20121128 |