FIELD: chemistry.
SUBSTANCE: film is featured with para-orentation of at least 95% polymer bonds. The method for film making includes polymerisation of para-oriented aromatic diamine and para-oriented aromatic dicarbon acid haloid in the mixture of solvents consisting of N-methylpyrrolidone or dimethylacetamyde and calcium chloride or lithium with obtaining of aramide polymer containing only para-oriented bounds. Then the spinning solution is obtained by solution of the polymer in solvent mixture up to concentration 2 - 6 wt %. The spinning solution is transformed to para-aramide fibrid film with usual known methods used for meta-aramide fibrids production.
EFFECT: enhancing of paper properties, durability, porosity; high heat stability and high content of moisture.
10 cl, 3 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ARAMID FIBRILS | 2004 |
|
RU2363780C2 |
| PARTICLES CONSISTING OF PARA-ARAMID COMPOSITE MATERIAL AND ADDITIONAL MATERIAL | 2008 |
|
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| ELECTRICAL INSULATION PAPER | 2013 |
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| NONFIBROUS POLYMER SOLUTION PARA-ARAMIDE WITH HIGH RELATIVE VISCOSITY | 2004 |
|
RU2342474C2 |
| LARGE-TONNAGE PROCESS FOR POLYMERISING POLYARAMIDE CONTAINING 5(6)-AMINO-2-(p-AMINOPHENYL)BENZIMIDAZOLE (DAPBI) | 2009 |
|
RU2488604C2 |
| CROSS-LINKED ARAMID POLYMER | 2009 |
|
RU2497840C2 |
| CROSS-LINKABLE ARAMIDE COPOLYMERS | 2007 |
|
RU2446194C2 |
| METHOD OF OBTAINING ARAMID POWDER, CONTAINING DAPBI | 2004 |
|
RU2361889C2 |
| ARAMID-BASED PAPER WITH IMPROVED PROPERTIES | 2019 |
|
RU2772579C1 |
| METHOD OF DISSOLVING ARAMID POLYMER IN SULPHURIC ACID USING KNEADER WITH TWO GUIDES | 2008 |
|
RU2461585C2 |
