FIELD: electrical engineering. SUBSTANCE: method involves loading of solvent (dimethylformamide or dimethyl- acetamide) and 4,4-diaminodiphenyl ester into reactor, stirring, loading of pyromellitic acid dianhydride, stirring, film pouring off, its cyclization and orientation. Dianhydride is loaded by two stages: 18,1 mas. p. at the first stage and 0,225-0,625 mas. p. at the second one. Polymethylphenylsiloxane liquid (0,20-3,52 mas. p. ) is loaded between these stages, and stirring is carried out at 15-25 C. EFFECT: improved method of polyimide film making. 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COPOLYMIDES | 1977 |
|
SU681865A1 |
| ULTRA-FILTRATING HEAT AND CHEMICAL RESISTANT POLYIMIDE MEMBRANE AND METHOD OF ITS | 2006 |
|
RU2335335C2 |
| PRODUCTION METHOD OF POLYIMIDE COMPOSITE FILM COATING REINFORCED BY NANOSTRUCTURED SILICON CARBIDE (VERSIONS) | 2015 |
|
RU2620122C2 |
| METHOD FOR PREPARING SOLUTION FOR FORMATION OF LIGHT-PROTECTING POLYIMIDE FIBER | 1989 |
|
RU2034939C1 |
| METHOD OF PRODUCING POLYIMIDE COMPOSITE FIBRE BASED ON CARBON REINFORCED BY NANOSTRUCTURED SILICON CARBIDE | 2016 |
|
RU2644906C2 |
| METHOD FOR PRODUCING POLYIMIDE COMPOSITE MATERIAL REINFORCED WITH NANOSTRUCTURED BORON CARBIDE (VARIANTS) | 2016 |
|
RU2656045C2 |
| METHOD OF PRODUCING POLYAMIDOACIDS AND CATALYTIC COMPOSITION FOR OBTAINING POLYAMIDOACIDS | 0 |
|
SU920057A1 |
| METHOD OF OBTAINING SOLUTIONS OF POLYAMIDE ACIDS | 1980 |
|
RU923245C |
| METHOD FOR PRODUCING POLYAMIDE ACID BASED ADDITIVE AND COMPOSITIONS FOR MAKING ANTIADHESIVE, NON-STICK AND ANTIFRICTION COATINGS FOR METAL SURFACES | 2013 |
|
RU2557530C2 |
| METHOD FOR PRODUCING POLYIMIDE COPOLYMERS CONTAINING CROWN-ETHICAL AND POLYSYLOXANE FRAGMENTS | 2016 |
|
RU2644152C1 |
Authors
Dates
1994-02-15—Published
1991-06-06—Filed