PRODUCTION OF THE ADHESIVE PREPREG FOR CIVIL APPLICATION
In cooperation with manufacturers of materials for aerospace branch the high-cost prepreg formulation used in aviation has been modified for mass introduction in railway structures |
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Properties of GFRP on the basis of full-strength glassfibres
| PROPERTIES |
VALUE |
| Tensile strength (0°, 90°), not less than |
400 ÌPà |
| Tensile elongation, not less than |
2.0 % |
| Ultimate compressive strength perpendicular to fibers, not less than |
500 ÌPà |
| Shear strength, not less than |
60 ÌPà |
| Glass-transition temperature, Òg, not less than |
110 °Ñ |
| Volume resistance |
1010 - 1012 Îhm·sm |
| Operating temperatures range, |
‑60 .. +60 °Ñ |
- warranty life – 300 mln. tons gross
- service life not less than – 10 years
- capacity during service life is up to 1 bln. tons gross
- rate of motion – up to 200 km/h
- resistance of the joint – not less than 1 kiloohm
- operating temperatures range -60/+80ºÑ
Development of a polymer matrix for prepregs used in GFRP and CFRP structures for railway and aircraft industries
Technical properties of a prepreg
| PROPERTIES |
VALUE |
| Moulding temperature |
120-140 ºÑ |
| Time of moulding |
30…90 min |
| Moulding pressure |
3…6 kg/sm2 |
| Prepreg storage time at t= ‑18 ºÑ |
12 months |
| Prepreg storage time at t= +25 ºÑ |
21 days |
Production technologies:
- Autoclave moulding
- Press moulding
- Vacuum infusion
CFRP properties
| PROPERTIES |
VALUE |
| Ultimate tensile strength |
1000 ÌPà |
| Ultimate compressive strength |
500 ÌPà |
| Modulus of elasticity |
150 GPà |
| Operating temperatures range |
‑60 …+175 ºÑ |
Materials are approved by Transportation department of Russian Federation
