牌号简介 About |
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Bayflex® 120-50是一种聚脲轮辋系统,与典型的胺延伸聚氨酯系统相比,其设计目的是提高生产率。Bayflex® 120-50聚脲推荐用于汽车仪表板、侧饰条、外部装饰板、轮罩扩口等应用。固化时间更快、外部脱模剂的使用频率更低、模具清洁度更低,从而提高了生产效率。(在试验应用中观察到每班零件增加40%)Bayflex® 120-50聚脲系统与胺延伸聚氨酯系统相比,也提供了优越的性能曲线,具有更好的尺寸稳定性和零件外观。增强材料,如磨碎的玻璃纤维、硅灰石和Covestro专有的DOI填料,可用于进一步提高整体尺寸稳定性。与任何产品一样,在给定应用中Bayflex® 120-50聚脲系统的使用必须由用户预先测试(包括现场测试等)以确定适用性。Bayflex® 120-50是一种配方反应注射成型系统(RIM),作为两种液体组分提供。组分A是二苯甲烷二异氰酸酯(MDI)预聚物,组分B是聚醚胺。 Bayflex 120-50 is a polyurea RIM system designed to provide increased productivity compared to the typical amine-extended urethane systems. Bayflex 120-50 polyurea is recommended for applications such as automotive fascia, side moldings, exterior trim panels, wheel well flares, etc. Faster cure time, less frequent application of external mold release agent, and reduced mold cleaning are possible, providing increased productivity. (A 40% increase in parts per shift has been observed in test applications.) The Bayflex 120-50 polyurea system also provides a superior property profile compared to amine-extended urethane systems, with better dimensional stability and part appearance. Reinforcements, such as milled glass fibers, wollastonite, and Covestro's proprietary DOI filler can be used for further improvement in overall dimensional stability. As with any product, use of the Bayflex 120-50 polyurea system in a given application must be tested (including field testing, etc.) in advance bythe user to determine suitability. Bayflex 120-50 is a formulated reaction injection molding system (RIM) supplied as two liquid components. Component A is a diphenylmethane diisocyanate (MDI) prepolymer and Component B is a polyether amine. |
技术参数 Technical Data | |||
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物理性能 PHYSICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
密度 Density |
1.04 | g/cm³ | ASTM D1622 |
机械性能 MECHANICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
弯曲模量 Bending modulus |
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23℃ 23℃ |
372 | MPa | ASTM D790 |
弹性体 elastic body |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
拉伸强度 tensile strength |
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断裂 fracture |
27.6 | MPa | ASTM D638 |
断裂 fracture |
27.6 | MPa | ASTM D412 |
拉伸应变 Tensile strain |
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断裂 fracture |
250 | % | ASTM D638 |
断裂 fracture |
% | ASTM D412 | |
撕裂强度 tear strength 2 |
kN/m | ASTM D624 | |
冲击性能 IMPACT |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
悬臂梁缺口冲击强度 Impact strength of cantilever beam notch |
J/m | ASTM D256 | |
热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
热固组件 Thermosetting components |
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部件 A Component A |
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部件 B Component B |
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脱模时间 stripping time |
min | ||
补充信息 Supplementary information |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
Heat Sag(6 in Overhang,121℃) Heat Sag(6 in Overhang,121℃) 3 |
mm | ASTM D3769 |
备注 |
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1 一般属性:这些不能被视为规格。 |
2 C 模具 |
3 1 hr |
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2018-02-13 关于尼龙这个班级,他们这些班级成员你都认识么?知道他们学号怎么来的么?知道他们有什么特长么?接下来就跟小编一起了解下吧~ 尼龙班级学号的命名 1.由内酰胺开环聚合的尼龙,称为尼龙x,简写为PAx。如PA6,是由己内酰胺开环聚合而得到。 2.由二元酸、二元胺 |
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