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TA1124HD

Date:2015/1/27 18:11:05 Hits:734
A chemically cross-linkable HDPE compound for production of composite pipes for domestic hot and cold water, under floor heating and central heating application.

Description 
TA1124HD is a cross-linkable compound made by silane grafted ethylene polymer according to 2 step or SIOLPLAS process. This graft polymer constitutes together with a masterbatch containing cross-linking catalyst and stabilizer. To meet the Chinese market need, TA1124HD is developed base on the formulation and processing technology of TA1122HD. Pipe produced with TA1124HD fulfils the 8760h pressure test by National Test Center of Polymer And Chemical Building Materials. Sanitary safety data is approved 《Criterion for safety evaluation of equipment and protective materials in drinking water system》(2001) by Institute of Environmental Health and Related Product Safety, Chinese Center for Disease Control and Prevention.
TA1124HD TA1124HD can be extruded as a normal thermoplastic polymer. Once touching with moisture, the cross-linking reaction will start. Already mixed graft and catalyst has to be fabricated during 2 hours. 

Typical Physical Properties



Proportions
Please note that the level of catalyst masterbatch should not be reduced below 5%. If color masterbatch or process aid is added, the content of graft polymer should be reduced accordingly. In general, all types of masterbatch should be dried before extrusion.
Extruder
TA1124HD can be processed on most modern thermoplastic extruders without problems. Particularly if the available screw is designed for high density polyethylene, excellent products can be expected.Screw Parameters:Length-to-diameter(L/D) ratio >25 Compression ratio 3-2.5:1 
Typical Temperature Profile (Reference only)


Suggestion for best extrusion
Pry-dry the catalyst masterbatch and color masterbatch at a temperature of 80-90℃ for 2 hours.
Reasonable design of head and die to obtain a streamline production.
When the machine is restarted after stopping more 10-15min, it should be purged by HDPE(MFI,190℃/2.16kg:0.3g/min).
Material with broken bags should not be used.

Cross-linking
Cross-linking method is immersion in hot water or exposure to low pressure steam. The period required to obtain the final gel content depends on the thickness、concentration of catalyst and temperature.

Storage
The storage life is nine months if TA1124HD can be stored in a suitable condition.br />
he package is opened only shortly before processing.
The product has to be stored in a cool and dry place.

Packing
Graft polymer: Aluminium-plastics bags containing 25kg or 600kg, sealed under vacuum.
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The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
The following methods are mainly used for cross-linking Polyethylene
The rules of gel content for different cross-linking techniques
The processes of silane cross-linking polyethylene
Can PEX-material be dried
The influence factors of gel content of silane cross-linking polyethylene
Mixing of grafted material and masterbatches
How to reduce the premature cross-linking of PEX
How to improve the surface quality of the pipes
How to reduce the internal stress of pipes
What about standards of PEX pipe
What kind of joint techniques are available for PEX pipes
PEX pipes are used in the following applications:
The corrosion resistance of PEX
The shrinkage of PEX pipe
Advices on trial of PEX
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