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BLUESIL ADD 916 is added to HCR’s on a 2-roll mill.
The normal dosage is 0.5 % by weight with respect to the HCR pre-catalysed compound.
Higher doses are not necessary and may even have a detrimental effect on the heat stability of cured compounds.
Comments: BLUESIL ADD 916 tends to make transparent mixtures opaque.
Improving the compression set of MF 135 U and MF 175 U by adding BLUESIL ADD 916:
For example, the table below gives the change in mechanical properties for MF 135 U and MF 175 U with and without the addition of BLUESIL ADD 916.
These properties are obtained after adding 2-4 dichloro benzoyl peroxide with 50 % active ingredients (Peroxide E) and curing for 8 minutes at.

 

​MF 135 U

​100

​100

​0

​0

​MF 175 U

​0

​0

​100

​100

​Peroxide E

​1.1

​1.1

​1.25

​1.25

​ADD 916

​0

​0.5

​0

​0.5


Properties after post-curing for 4 hours at 200 °C

​Shore A hardness

​39

​39

​70

​39

​Tensile strength MPa

​7.1

​7.0

​9.2

​9.5

​Elongation at break %

​480

​470

​310

​300

​Tear strength, kN/m

​20

​18

​21

​20

​Resilience, %

​51

​54

​40

​41

​Compression set (22 h / 177 °C / 25 %)

​50

​33

​52

​33


 

 

Avoid discharge into drains, water courses or onto the ground. Store in a cool, dry place with adequate ventilation. Keep away from incompatible materials, open flames, and high temperatures. Avoid contact with oxidizing agents. Suitable containers: Steel drums coated with epoxy-resin.Please consult the Safety Data Sheet of this product.ELV;Food Contact;GADSL;Heavy Metals;RoHS;WEEE

BLUESIL ADD 916

Crumbly, white paste.

Protection

HCR Additives

Paste

ELV;Food Contact;GADSL;Heavy Metals;RoHS;WEEE

BLUESIL ADD 916 is an acid acceptor that improve the compression set of HCR’s cured with 2-4 dichloro benzoyl peroxide (especially for hot air curing), without post-curing.
BLUESIL ADD 916 avoids efflorescence (blooming) of non post-cured, vulcanised compounds.

Asia Pacific;Europe Middle East Africa;Central and South America;North America

For information about Storage and Shelf Life for this product, please download the Technical Data Sheet.

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Rubber General Guidehttps://www.bluestarsilicones.com/EN/Our_offer/KEC/ListInstance_Brochure_Title/RubberGeneralGuide_Brochure.pdfRubber General Guide

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