Описание материалов:
Baydur 661 IBS is a gray-pigmented, rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. This system incorporates a specially engineered interactive blowing system (IBS) and is supplied as two reactive liquid components. Component A is a polymeric diphenylmethane diisocyanate (PMDI), and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. Note: Component B should be agitated thoroughly prior to delivery of drum contents to day tank due to possible pigment settling.
The Baydur 661 IBS system is used in transportation, industrial, and recreational markets. The applications typically take advantage of the material's strength, excellent surface finish, and large-part capability. As with any product, use of the Baydur 661 IBS system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.
| Главная Информация | |
|---|
| Характеристики | - Хорошая прочность
- Отличный внешний вид
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| Используется | - Структурная пена
- Промышленное применение
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| Внешний вид | |
| Метод обработки | - Литье под давлением реакции (обод)
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| Физический | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Удельный вес | 0.718 | g/cm³ | ASTM D792 |
| Формовочная усадка-
Поток (6.35 mm) | 0.30 - 0.50 | % | ASTM D955 |
| Твердость | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Твердость дюрометра | | | ASTM D2240 |
| Shaw D, 6.35mm | 71 | | ASTM D2240 |
| Shaw D, 12.7mm | 74 | | ASTM D2240 |
| Механические | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Прочность на растяжение | | | ASTM D638 |
| Fracture, 6.35mm | 26.9 | MPa | ASTM D638 |
| Fracture, 12.7mm | 25.5 | MPa | ASTM D638 |
| Удлинение при растяжении | | | ASTM D638 |
| Fracture, 6.35mm | 7.0 | % | ASTM D638 |
| Fracture, 12.7mm | 7.0 | % | ASTM D638 |
| Флекторный модуль | | | ASTM D790 |
| 6.35 mm | 1460 | MPa | ASTM D790 |
| 12.7 mm | 1240 | MPa | ASTM D790 |
| Flexural Strength | | | ASTM D790 |
| 6.35 mm | 51.7 | MPa | ASTM D790 |
| 12.7 mm | 47.6 | MPa | ASTM D790 |
| Прочность на сжатие | | | ASTM D695 |
| 6.35 mm | 31.0 | MPa | ASTM D695 |
| 12.7 mm | 26.9 | MPa | ASTM D695 |
| Воздействие | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Charpy Unnotched Impact Strength 1 | 16 | kJ/m² | Internal method |
| Тепловой | Номинальное значение | Единица измерения | Метод испытания |
|---|
| Температура отклонения при нагрузке | | | ASTM D648 |
| 0.45 MPa, unannealed, 6.35mm | 90.0 | °C | ASTM D648 |
| 0.45 MPa, unannealed, 12.7mm | 108 | °C | ASTM D648 |
| Термокомплект | Номинальное значение | | |
|---|
| Компоненты термокомплекта | | | |
| Component a | Mixing ratio by weight: 120 | | |
| Component B | Mixing ratio by weight: 100 | | |
| Дополнительная информация |
|---|
| Part A
Type: Isocyanate
Appearance: Dark brown liquid
Specific Gravity @ 25°C: 1.24
Viscosity @25°C: 200 cps
Flash Point PMCC: 199°C
NCO: 31.5 wt%
Part B
Type: Polyol
Appearance: Medium gray liquid
Specific Gravity @ 25°C: 1.11
Viscosity @25°C: 1800 cps
Flash Point PMCC: 117°C
Water: 0.35 wt%
Material Temperatures: 32 to 35°CMold Temperature: 55 to 66°CHand Mix Reactivity at 25°C
Cream Time: 16 to 26 sec
Gel Time: 30 to 40 sec
Tack Free Time: 50 to 60 sec
Free-Rise Density: 13 to 15 lb/ft³
Polyol Nucleation Specific Gravity: 0.85 to 0.95 0Recommended Shot Time: 5 to 6 secTypical cure Time, 0.500 in Thickness: 5 sec |
