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牌号简介 About |
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Baydul- 726 IBS是一种用于反应注射成型(RIM)工艺的高密度聚氨酯结构泡沫体系。该系统包括一个专门设计的交互式吹扫系统(IBS),作为两个反应性液体成分提供。A组分是一种改性的聚合物二苯基甲烷二异氰酸酯(PMDI)预聚物混合物,B组分是一种不含CFC-或HCFC发泡添加剂的配方多元醇体系。Baydur 726 IBS系统用于需要UL94可燃性等级为V-0和/或5VA的应用,用于电子、设备外壳和电器市场。这些应用通常利用了材料的强度、优异的表面光洁度和大零件性能。与任何产品一样,在给定应用中使用Baydur 726 IBS系统必须由用户提前进行测试(包括现场测试等),以确定适用性。 Baydur 726 IBS is a high-density 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 modified polymeric diphenylmethane diisocyanate (PMDI) prepolymer blend, and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. Baydur 726 IBS system is used in applications requiring a UL94 flammability rating of V-0 and/or 5VA for use in electronic, equipment housing, and appliance 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 726 IBS system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. |
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 |
0.878 | g/cm³ | ASTM D792 |
收缩率 Shrinkage rate |
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MD:6.35 mm MD:6.35 mm |
0.70 到 0.90 | % | ASTM D955 |
冲击性能 IMPACT |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
简支梁无缺口冲击强度 Charpy Unnotch Impact strength 3 |
32 | kJ/m² | 内部方法 |
热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
热变形温度 Hot deformation temperature |
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0.45 MPa,未退火,6.35 mm 0.45 MPa, unannealed, 6.35 mm |
100 | ℃ | ASTM D648 |
阻燃性能 FLAME CHARACTERISTICS |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
6.40 mm 6.40 mm |
V-0 5VA | UL 94 | |
6.35 mm 6.35 mm |
FMVSS 302 | ||
机械性能 MECHANICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
邵氏硬度 Shore hardness |
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邵氏 D,6.35 mm Shaw D, 6.35 mm |
ASTM D2240 | ||
拉伸强度 tensile strength |
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断裂,6.35 mm Fracture, 6.35 mm |
MPa | ASTM D638 | |
拉伸应变 Tensile strain |
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断裂,6.35 mm Fracture, 6.35 mm |
% | ASTM D638 | |
弯曲模量 Bending modulus |
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6.35 mm 6.35 mm |
MPa | ASTM D790 | |
弯曲强度 bending strength |
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6.35 mm 6.35 mm |
MPa | ASTM D790 |
备注 |
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1 一般属性:这些不能被视为规格。 |
2 0.25 in |
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