Описание материалов:
Bayflex 257 is a fully compounded polyether-based polyurethane system consisting of two liquid components which can be water-blown. Component A is a modified diphenylmethane diisocyanate (MDI) prepolymer, and Component B is a polyether polyol system. The Bayflex 257 system is used in the outsole system of dual-density polyether shoe soles. Finished outsoles can be molded translucent to opaque.
The combination of durability, styling latitude and ease of processing makes the Bayflex 257 system a prime soling material for dual-density soles for casual, walking and light-duty shoes. As with any product, use of the Bayflex 257 system in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.
| Физический | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Удельный вес | 1.05 | g/cm³ | Internal method |
| Твердость | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Твердость дюрометра (Shore A) | 55 - 60 | | ASTM D2240 |
| Механические | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Устойчивость к истиранию (1000 Cycles, 1000 g, H-18 Wheel) | 50.0 | mg | ASTM D1044 |
| Ross Flex-
0% рост порезов | | | ASTM D1052 |
| -29°C, 6.35 mm | > 5.0E+4 | Cycles | ASTM D1052 |
| 23°C, 6.35 mm | > 1.0E+5 | Cycles | ASTM D1052 |
| Дополнительная информация | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Маслостойкость-
Увеличение объема | | % | ASTM D5694 |
| Эластомеры | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Прочность на растяжение (Break) | 8.27 - 10.3 | MPa | ASTM D412 |
| Удлинение при растяжении (Break) | 500 - 600 | % | ASTM D412 |
| Tear Strength 1 | 35.0 - 43.8 | kN/m | ASTM D1004 |
| Термокомплект | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Компоненты термокомплекта 2 | | | |
| Component a | Mixing ratio by weight: 31 | | |
| Component B | Mixing ratio by weight: 100 | | |
| Дополнительная информация | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Part A
Type: Isocyanate
Appearance: Light yellow to yellow liquid
Specific Gravity @ 25°C: 1.21
Viscosity @25°C: 550 to 800 mPa
Flash Point, PMCC: 213°C
NCO: 22.6 to 23.1 wt%
Bulk Density at 25°C: 10.1 lb/gal
Part B
Type: Polyol
Appearance: Light yellow liquid
Specific Gravity @ 25°C: 1.05
Viscosity @25°C: 1100 mPa-s
Flash Point, PMCC: 135°C
Bulk Density at 25°C: 8.76 lb/gal
Water: 0.10 wt% max
Hydroxyl Number: 92
Material Temperatures: 25°CMold Temperature: 49°CDemold Time: 2 minLinear Shrinkage at 0.50 g/cm³: <0.5%Hand Mix Reactivity at 25°C
Cream Time: 16 to 20 sec
Tack-Free Time: 31 to 51 sec
Pull Time: 60 to 70 sec
Free-Rise Density: 42 to 46 lb/ft³ |
| Примечание |
|---|
| 1 . | C mould |
| 2 . | 98 Index |
| Тип материала |
Категория |
Производитель |
|
Xuchuan XCW-6620D |
PUR, Unspecified |
Xuchuan Chemical (Suzhou) Co., Ltd
|
|
Xuchuan XCA-RS4520 |
PUR, Unspecified |
Xuchuan Chemical (Suzhou) Co., Ltd
|
|
Bayfit® 49BM02(90 Index, 70 kg/m³) |
PUR, Unspecified |
Covestro - PUR
|
|
Huafon JF-HSY-ADP1 |
PUR, Unspecified |
Huafon Group Co., Ltd.
|
|
Huafon JF-W-AL6030 |
PUR, Unspecified |
Huafon Group Co., Ltd.
|
|
Andur 2-90 AP |
PUR-Ether/TDI |
Anderson Development Company
|
