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When added on a 2-roll mill, 0.5 to 1% of BLUESIL ADD 904 has a very noticeable effect on the green strength of HCR mixtures. Whilst higher doses can be used (up to 2 %) without having a detrimental effect on the cured compounds’ mechanical properties, this may cause « mill shrinkage » to occur.
Comments: BLUESIL ADD 904 tends to increase the swell, especially on slightly charged mixtures. Furthermore, its use is not recommended in transparent mixtures.
The increase in Mooney Viscosity of MF 135 U and MF 175 U:
For example, the table below gives the change in Mooney Viscosity obtained for MF 135 U and MF 175 U as a function of the BLUESIL ADD 904 dose.

 

BLUESIL ADD 904 dose (in parts)00.5

​1

​MF 135 U

28

3035

​MF 175 U

626875
Conditions: ML (1 + 4) at 30 °C on uncatalysed product

 

BLUESIL ADD 904 储存温度低于40°C / 104°F 时,从生产日期开始产品保质 12个月

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BLUESIL ADD 904

White powder.

保护

高温胶添加剂

BLUESIL ADD 904 is an agent designed to increase the green strength and the viscosity of HCR mixtures to improve their processability. It has a permanent effect.

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