FIELD: chemistry.
SUBSTANCE: invention relates to a block-copolymer which is suitable for toughening an epoxy resin, to a curable polymer composition for fibre-reinforced composite materials and to a composite material. Block-copolymer has at least one block made from thermoplastic aromatic polymer (A), which has a glass transition temperature (Tg) of at least, 150 °C, and at least one block obtained from polymer (B) with glass transition temperature in range from -130 °C to +40 °C. Polymer (A) is soluble in precursor of uncured epoxy resin and contains one or more polysulphones containing ether-linked repeating units. Polymer (B) is a saturated aliphatic polyester. Polymer (B) is insoluble in precursor of uncured epoxy resin. Curable polymer composition contains said block-copolymer, one or more uncured precursors of epoxy resin and curing agent. Composite material contains carbon fibre reinforcing agent and said polymer composition.
EFFECT: invention improves impact viscosity of epoxy resin at relatively low concentrations of reinforcing agent, and improves properties of carbon fibre composites.
18 cl, 4 dwg, 9 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MALAIMIDE RESINS | 2012 |
|
RU2643806C2 |
| COMPOSITE MATERIALS CONTAINING CONDUCTING NANOFILLERS | 2012 |
|
RU2611512C2 |
| COMPOSITION USED IN CROSS-LINKING CHAINS | 2001 |
|
RU2278126C2 |
| ELASTIC POLYMERIC ELEMENT, SUBSTRATE FOR CURABLE COMPOSITION, CURABLE COMPOSITION, METHODS FOR PREPARATION THEREOF, CURING METHOD, PRODUCTS | 2001 |
|
RU2272051C2 |
| METHOD FOR FORMING MOULDED BLANK | 2013 |
|
RU2635623C2 |
| BONDING OF COMPOSITE MATERIALS | 2014 |
|
RU2633581C2 |
| MODIFIED RESIN SYSTEMS SUITABLE FOR INFUSION OF LIQUID RESIN | 2015 |
|
RU2703203C2 |
| COMPOSITE MATERIALS | 2013 |
|
RU2631299C2 |
| COMPOSITE MATERIALS FROM THERMO-REACTIVE RESIN CONTAINING INTER-LAYER PARTICLES INCREASING STRENGTH | 2013 |
|
RU2641004C2 |
| EPOXY RESIN-BASED CURABLE COMPOSITIONS AND COMPOSITE MATERIALS OBTAINED THEREFROM | 2011 |
|
RU2574054C2 |
