Technical specification
技术规格
For the supply of prepreg with a surface density of 75 g / m2
用于供应表面密度为 75 g / m2 的预浸料
Goals and objectives:
目标和目的:
Search for material analogues
搜索类似材料
Execution period:
执行时间:
Material delivery time and work performance – no more than 30 calendar days from the date of conclusion of the contract
材料交付时间和工作表现 – 自合同签订之日起不超过 30 个日历日
BASIC TECHNICAL REQIREMENTS FOR PREPREG.
预浸料的基本技术要求
1 | Binder requirements | Parameters | ||
Glass-transition temperature at 150 ºС 15 min. | Not less 125 ºС | |||
| Not less 152 | |||
Flexural modulus, GPa ASTM D790 | Not less 2,8 | |||
Tensile strength at break, σ+, MPa ASTM D638 | Not less 75 | |||
Tension modulus, E+, GPa ASTM D638 | Not less 2,6 | |||
2 | Carbon requirements | |||
Surface density, gsm | 75 | |||
Fiber type | Toray T700SC-12K-50C* | |||
Fiber direction in the prepreg | UD | |||
3 | Prepreg requirements | |||
Prepreg density, gsm | 117-127 | |||
Resin content, % | 36-38 | |||
Storage time at +23°С, days | Not less 30 | |||
Storage time at -18°С, month | Not less 12 | |||
4 | Requirements to carbon-plastic based on prepreg | |||
4.1 | Mechanical tensile tests according to GOST R 56785 in the direction [0] | |||
Tensile strength, MPa | Not less 2470 | |||
Modulus of elasticity, GPa | Not less 120 | |||
4.2 | Mechanical compression tests according to GOST R 56812 in the direction [0] | |||
Compressive strength, MPa | Not less 800 | |||
Modulus of elasticity, GPa | Not less 108 | |||
4.3 | Shear strength according to GOST 32659, MPa | Not less 70 | ||
5 | Requirements to processing prepreg | |||
Temperature condition to drying prepreg | Smooth heating at a speed 3-5 deg/min to a temperature of 150ºС. Exposure at 150ºС for 7-9min. Smooth cooling at a speed of 6-8 deg/min up to 65 ºС | |||
6 | Supply requirements | |||
Delivery form | roll | |||
Canvas width | 750-1000mm | |||
Canvas length | 100-150m | |||
7 | Prepreg defects | Not allowed | ||
7.1 | No thread | Not allowed | ||
7.2 | Extraneous inclusions, accumulation of lint | Not allowed | ||
7.3 | Creases, ruptures of the prepreg | Not allowed | ||
7.4 | Excess binder/lack of binder | Not allowed | ||
7.5 | Tightening the threads | Not allowed | ||
7.6 | Strips up to 3mm wide and up to 2m long, not impregnated, on one side. | Not allowed | ||
7.7 | The gap between the threads | Not allowed |
Process Engineer | Borisenkov Artem | |