Rubber Antioxidant BHT

Product Name:
2,6-Di-terbutyl-4-methyl phenol
Molecular Formula: C15H24O
Molecular Weight: 220.36
Gravity: 1.048
CAS NO.: 128-37-0
Package: 25kg/bag
Storage Life: 24months
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Product Details

BHT(264/T501)


Description:


Chemical  Name

 2,6-Di-terbutyl-4-methyl  phenol

Molecular Formula  C15H24O
Molecular Structure  image001.png
Molecular Weight220.36
Gravity1.048
CAS NO.  128-37-0
Package25kg/bag
Storage Life24 months


Specification:



Appearance 

Food Grade

Industry Grade

White Crystalline

White Crystalline

Melting Point ℃

69.0

69.5

Free Cresol%≤

0.015

0.02

Ash %≤

0.01

0.01

Moisture %≤

0.10

0.05

Heavy    Metal (as Pb)%≤

0.0004

Untested

 Arsenic%≤

0.0001

Untested



The blending of natural rubber with synthetic rubber or synthetic rubber with synthetic rubber is often discussed.If you mix it with a mixer, it doesn't have much trouble in terms of the process, you can mix it all at once.However, such a blend of rubber batch small, and there can not be used in the mixer rubber.In this way, it is necessary to mix with the mixer. The following is a description of the mixing method of the mixer.

If you want to get a good quality blend, you should first complete the thin rubber B.Then put the hard rubber A into the opening mill, and put the rubber B into the opening mill according to 5% of the quality of hard rubber A, and cut it repeatedly with A knife. This step is very important.Then 10% mass of soft rubber B is added for mixing.Continue to increase the amount of soft rubber B until the mixing is finished.When the color and transparency of the mixture meets the requirements, the blending can be judged to be completed.

When the high styrene resin and polyethylene rubber blend, first to melt resin with high melting point in rubber mixing machine, at this time whether to set the temperature of the roller in a better range, because in most cases the best point of unclear set temperature, so the best side of heating roller, while adding a small amount of resin.If the temperature is low, the resin will fall into the plastic tray, if after a while to add resin, there will be a certain proportion of resin attached to the roller.The resin attached to the roller is rubber-like, like wrapped on the roller.At this time, the rest of the resin added to the rubber refining machine, the whole uniform, can stop heating.The reason to stop the heating is to prevent two points one is if more than the above temperature, the viscosity of the resin will be excessively reduced, the blend of rubber due to thermal aging and coloring.At this point, even if the heating stopped, because the rubber mixing machine has been preheated, so the rubber mixing machine roller temperature will not drop rapidly.

Add about 5% thin rubber to the resin on the rubber roller of the rubber mixing machine, and then blend fully. According to the method above, gradually increase the amount of glue and continue to blend fully.If you put too much raw glue at one time, it will lead to failure, so be careful.After blending, the success of blending can be judged by observing the color and transparency of the mixture.If it is an electrically heated rubber mixer, the resin with high melting point can be mixed with rubber.




 

 

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