牌号简介 About |
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40-3900是一种填充银的双组分环氧粘合剂。这种导电环氧树脂配方提供了导电性的连续性,其电阻率值小于1x10 ^-4 ohm cm。40-3900也因其广泛的工作温度范围-50至+170°C而闻名。40-3900专门设计用于微电子和光电应用中的粘合。由于其良好的连续性,它也被广泛应用于微波EMI和RFI屏蔽,印刷电路板、波导管、电子模块、扁平电缆、高频屏蔽、连接器、电路的组装或维修,以及作为冷焊料。40-3900是用纯银(无合金)配制而成,设计成方便的1:1混合比。树脂和硬化剂都有分散的银粉。特点:导电、导热、室温固化、易1:1配合比、粘结强度好 40-3900 is a two component epoxy adhesive filled with silver. This electrically conductive epoxy resin formulation offers continuity of conductivity with an electrical resistivity value of less than 1x10^-4 ohm-cm. 40-3900 is also well known for its wide operating temperature range, -50 to + 170°C. 40-3900 is specifically designed for adhesive bonding in microelectronic and optoelectronic applications. Due to its excellent continuity, it has also been used extensively in applications such as micro-wave EMI and RFI shielding, in the assembly or repair of printed circuit boards, wave guides, electronic modules, flat cable, high frequency shields, connectors, circuitry, and as a cold solder. 40-3900 is formulated with pure silver (no alloys) and is designed in a convenient 1:1 mix ratio. Both the resin and hardener have silver powder dispersed. Features: Electrically conductive Thermally conductive Room temperature cure Easy 1:1 mix ratio Good bond strength |
技术参数 Technical Data | |||
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机械性能 MECHANICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
弯曲强度 bending strength |
70.3 | MPa | |
热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
导热系数 Thermal conductivity coefficient |
7.9 | W/m/K | |
补充信息 Supplementary information |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
工作温度 working temperature |
-50.0 到 170 | ℃ | |
Uncured Properties Uncured Properties |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
颜色 colour |
Silver | ||
重量混合比(PBW) Weight Mix Ratio (PBW) |
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Part A Part A |
1.0 | ||
Part B Part B |
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密度 Density |
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25℃ 25℃ 2 |
g/cm³ | ||
25℃ 25℃ 3 |
g/cm³ | ||
固化时间 Curing time |
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90℃ 90℃ |
hr | ||
65℃ 65℃ |
hr | ||
25℃ 25℃ |
hr | ||
储存稳定性 storage stability 4 |
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25 ℃ 25 ℃ 4 |
min | ||
贮藏期限 Storage period |
month | ||
Cured Properties Cured Properties |
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 Shaw's D |
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搭接剪切强度 lap shear strength 5 |
MPa | ||
体积电阻率 Volume resistivity |
ohms·cm |
备注 |
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1 一般属性:这些不能被视为规格。 |
2 Part B |
3 Part A |
4 100 grams |
5 Al to Al |
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河南大规模留抵退税开始实施
2022-04-16 近日,河南省政府新闻办发布消息,为确保今年实施的增值税留抵退税政策落实落细,该省留抵退税工作时间表已经明确,4月1日起正式实施,小微型企业将最先受益。 据河南省税务局 |
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