PUR，Epoxies, Ect. 20-2521对比PUR，Epoxies, Ect. 20-2523物性表,价格行情_搜料

牌号信息	Epoxies, Ect. 20-2521 物性表 PUR & 美国Epoxies 指导价格：暂无塑料库存：缺货	Epoxies, Ect. 20-2523 物性表 PUR & 美国Epoxies 指导价格：暂无塑料库存：缺货
牌号简介	20-2521是一种高性能双组分聚氨酯系统。这种易于使用的聚氨酯粘度非常低，是封装或封装精密电子元件的理想选择。20-2521在整个固化周期内表现出非常低的收缩、应力和放热。该系统还以其优异的热冲击和优异的介电性能而闻名。20-2521适用于需要较宽工作温度（-55至+130°C）的灌封应用。当接触盐水、温和的酸和碱以及脂肪族碳氢化合物时，也是一个很好的选择。特点：不含MOCA或TDI低应力元件优良的介电性能，低粘度，易于处理，收缩率低，很好的抗热震性和抗振性，水解稳定性好。 20-2521 is a high performance two component urethane system. This easy to use polyurethane is very low in viscosity and ideal for potting or encapsulating delicate electronic components. 20-2521 exhibits very low shrinkage, stress, and exotherm throughout the cure cycle. This system is also well known for its outstanding thermal shock and excellent dielectric properties. 20-2521 is ideal for potting applications where a wide operating temperature (-55 to +130°C) is required. It is also a good choice when exposure to salt water, mild acids and bases, and aliphatic hydrocarbons is expected. Features: Does not contain MOCA or TDI Low stress on components Excellent dielectric properties Low viscosity Easy to handle Low shrinkage Very good thermal shock and vibration resistance Hydrolytic stability	20-2523是一种高性能双组分聚氨酯系统。这种易于使用的聚氨酯粘度非常低，是封装或封装精密电子元件的理想选择。20-2523在整个固化周期内表现出非常低的收缩、应力和放热。该系统还以其优异的热冲击和优异的介电性能而闻名。20-2523适用于需要较宽工作温度（-55至+130°C）的灌封应用。当接触盐水、温和的酸和碱以及脂肪族碳氢化合物时，也是一个很好的选择。特点：不含MOCA或TDI低应力元件优良的介电性能，低粘度，易于处理，收缩率低，很好的抗热震性和抗振性，水解稳定性好。 20-2523 is a high performance two component urethane system. This easy to use polyurethane is very low in viscosity and ideal for potting or encapsulating delicate electronic components. 20-2523 exhibits very low shrinkage, stress, and exotherm throughout the cure cycle. This system is also well known for its outstanding thermal shock and excellent dielectric properties. 20-2523 is ideal for potting applications where a wide operating temperature (-55 to +130°C) is required. It is also a good choice when exposure to salt water, mild acids and bases, and aliphatic hydrocarbons is expected. Features: Does not contain MOCA or TDI Low stress on components Excellent dielectric properties Low viscosity Easy to handle Low shrinkage Very good thermal shock and vibration resistance Hydrolytic stability

产品描述
厂家：	美国Epoxies	美国Epoxies
类别：	PUR PUR	PUR PUR
填料：
用途：	电气/电子应用领域	电气/电子应用领域
性能特点：	耐水解,低粘度,减震,收缩性低 Hydrolysis stability,Low Viscosity,noise reduction,Low contractility	耐水解,低放热性,低粘度,收缩性低,良好的抗热震性 Hydrolysis stability,Low Exotherm,Low Viscosity,Low contractility,Good thermal shock resistance
加工条件：	灌封	灌封

技术参数

物理性能
PHYSICAL Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

收缩率(MD)
Shrinkage rate %

热性能
THERMAL Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

线性热膨胀系数(MD)
Linear coefficient of thermal expansion 1/℃

电气性能
ELECTRICAL Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

表面电阻率
Surface resistivity ohms

热固性混合粘度
Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

25℃
25℃ cP

补充信息
Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

冷热冲击测试(-65 到 130℃)
Thermal Shock Test

工作温度
working temperature ℃

Uncured Properties
Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

体积混合比(PBV)(Part A)
Volume Mixing Ratio (PBV)

体积混合比(PBV)(Part B)
Volume Mixing Ratio (PBV)

储存稳定性(25 ℃)
storage stability min

固化时间(25℃)
Curing time hr

固化时间(45℃)
Curing time hr

固化时间(65℃)
Curing time hr

固化时间(85℃)
Curing time hr

密度(25℃)
Density g/cm³

粘度(25℃)
viscosity Pa·s

重量混合比(PBW)(Part A)
Weight Mix Ratio (PBW)

重量混合比(PBW)(Part B)
Weight Mix Ratio (PBW)

颜色
colour

Cured Properties
Epoxies, Ect. 20-2521 Epoxies, Ect. 20-2523 单位
UNIT 测试方法
TEST METHOD

体积电阻率
Volume resistivity ohms·cm

吸水率(--)
Water absorption rate %

拉伸应变(断裂)
Tensile strain %

拉伸强度
tensile strength MPa

相对电容率(100 Hz)
Relative permittivity

耐电强度
Electrical strength kV/mm

耗散因数(100 Hz)
Dissipation factor

耗散因数(60 Hz)
Dissipation factor

邵氏硬度(邵氏 D)
Shore hardness

备注

1 一般属性：这些不能被视为规格。

2 10 cycles

3 Part B

4 Part A

5 1 lb. mass

6 After 24 hours

7 After 7 days