Описание материалов:
Bayflex 957 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 957 system is used in the manufacture of microcellular polyurethane shoe soles. Soles prepared from these components combine light weight, comfort, and durability. Processibility and dynamic flexural properties are excellent over a wide range of densities.
The combination of excellent physical properties and ease of processing has made the Bayflex 957 system a prime soling material for fashion and casual shoes. As with any product, use of the Bayflex 957 system in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.
The properties of the Bayflex 957 system, listed below, are representative of typical performance characteristics of molded panels. Actual results may vary, depending on part design and processing conditions.
| Главная Информация | |
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| Характеристики | - Обрабатываемость, хорошая
- Хорошая гибкость
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| Используется | |
| Физический | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Удельный вес | 0.497 | g/cm³ | Internal method |
| Твердость | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Твердость дюрометра (Shore A) | 50 | | ASTM D2240 |
| Механические | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Устойчивость к истиранию (1000 Cycles, 1000 g, H-18 Wheel) | 70.0 | mg | ASTM D3489 |
| Ross Flex 1 | | | 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 |
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| Маслостойкость | | % | ASTM D5694 |
| Эластомеры | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Прочность на растяжение (Break) | 3.10 | MPa | ASTM D412 |
| Удлинение при растяжении (Break) | 400 | % | ASTM D412 |
| Tear Strength | | | |
| -- 2 | 4.38 | kN/m | Internal method |
| -- 3 | 14.0 | kN/m | ASTM D624 |
| Термокомплект | Номинальное значение | Единица измерения | Метод испытания |
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| Компоненты термокомплекта | | | |
| Component a | Mixing ratio by weight: 77 | | |
| Component B | Mixing ratio by weight: 100 | | |
| Дополнительная информация | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Part A
Type: Isocyanate
Appearance: Light yellow viscous liquid
Specific Gravity @ 25°C: 1.20
Viscosity @25°C: 1100 mPa*s
Flash Point PMCC: 207°C
Bulk Density @ 20°C:10.01 lb/gal
NCO: 18.7 - 19.1 wt%
Part B
Type: Polyol
Appearance: Milky white liquid
Specific Gravity @ 25°C: 1.07
Viscosity @25°C: 1100 mPa*s
Flash Point PMCC: 132°C
Bulk Density @ 25°C: 8.93 lb/gal
Water: 0.45 wt%
Hydroxyl Number: 170
Material Temperature: 28°CMold Temperature: 49°CDemold Time: 3.5 minLinear Shrinkage @ 0.50 g/cm³: <1.0%Hand Mix Reactivity @ 25°C
Cream Time: 12 to 16 sec
Tack Free: 23 to 33 sec
Pull Time: 32 to 43 sec
Free-Rise Density: 12.5 to 15 lb/ft³ |
| Примечание |
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| 1 . | 0% Cut Growth |
| 2 . | Block |
| 3 . | C mould |
