Mainly used in the production of high hardness of the polyurethane elastomer products, such as all kinds of wheels, machinery parts.
Can be used for hand, more suitable for casting machine operation, chain extender for the MOCA.
High hardness type product introduction
Material pre-polymer viscosity is low, easy to operate; after forming the material has a high hardness and resilience, good toughness, not brittle fracture. In special occasions can be replaced casting nylon high hardness materials.
Product parameters
高硬度型
HC-8375D
HC-6560D
HC-6575D
预聚体
常温外观(25℃)
粘稠液体
蜡状固体
蜡状固体
NCO含量(%)
8.0~9.0
8.0~9.0
9.0~10.0
使用配比(PHR)
23.0~26.0
23.0~26.0
26.0~29.0
釜中寿命
(75~78℃/min)
1~2
2~3
3~5
成品物性
硬度(邵D)
75±5
60±5
75±5
拉伸强度(MPa)
37.7
57.5
63.4
撕裂强度(kN/m)
87.9
187.1
197.2
扯断伸长率(%)
402
331
210
阿克隆磨耗(cm3/1.61km)
0.1
0.05
0.05