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General Characterization

德士模都(Desmodur) VP PU 0129M是一种4,4',2,4'和2,2'-二苯基甲烷二异氰酸酯的混合物, 其中2,4'异构体的含量较高。该产品作为异氰酸酯组分用于聚氨酯制品的生产。

Storage Conditions

推荐储存温度 :20 ~30 °C
储存稳定性 :在密封无湿气的桶内,6个月
Desmodur VP PU 0129M 对水非常敏感,与水反应产生不溶解的脲及二氧化碳。在密闭的容器内,产生的二氧化碳会导致容器压力升高从而产生危险。在高于300C 的情况下储存该产品会加剧二聚体的形成而缩短保质期。以结晶或部分结晶的状态储存也会加速不溶二聚体的产生,应当避免。如果Desmodur VP PU 0129M已经在低于200C下短期储存并产生结晶,必须立即在60 - 700C重新融化,注意产品温度不得高于700C。一旦产品融化完全必须立即混合均匀并冷却至推荐的储存温度。由于融化处理过程会导致二聚体含量增加,因此融化后的产品要尽快使用。如果有空气进入容器,特别是长时间将产品暴露在光线下会导致产品发黄变色。

Sampling

在产品取样时,要防止产品与水分接触或暴露于湿气中。

Packaging Type

桶装、槽罐和槽车。

Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
粘度(25^0C) AM2016 mPa·s 12 ± 2
苯基异氰酸酯含量 AM2014 ppm ≤ 10
纯度(分子量250) 2011-0248603-94 重量% ≥ 99.5
密度(40^0C) DIN 51757 g/cm³ 1.21
凝固范围 °C 12 - 20
NCO含量(理论值) 重量% 33.6

Specifications

Property Name Test Method Unit Value
2,2'-MDI含量 MDI-01-06 重量% ≤ 0.80
4,4'-MDI含量 MDI-01-06 重量% ≥ 39.20
4,4'-MDI含量 MDI-01-06 重量% ≥ 39.20
水解氯含量 MDI-01-04 mg/kg ≤ 50
水解氯含量 MDI-01-04 mg/kg ≤ 50
2,4'-MDI含量 MDI-01-06 重量% 50.00 - 60.00
2,2'-MDI含量 MDI-01-06 重量% ≤ 0.80
2,4'-MDI含量 MDI-01-06 重量% 50.00 - 60.00

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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