Steel-plastic composite pipe PPR hot melt adhesive（BC-4HRB）


characteristic

BC-4HRB is a maleic anhydride grafted polypropylene which is a type of adhesive polypropylene resin for steel-plastic PPR pipes. While maintaining excellent processing properties and mechanical properties, it also has excellent bonding properties, and has extremely high adhesion to polypropylene (PPR) and metals such as aluminum, steel and copper.


         chart1：Main performance of BC-4HRB

Performance
Indicator
standard test
Exterior
White uniform particles
Visual inspection
Melt Index(g／10min，190℃)
     3～6
GB/T3682
density（g/cm3）
     >0.9
GB/T1033
Tensile breaking strength(MPa)
     >15
GB/T1042
Elongation at break（％）
>200
GB/T1040
Charpy impact strength(KJ/m2)
不断
GB/T1843
Vicat softening point（℃）
>105
GB/T1633
Melting point（℃）
155
GB/T4608


use

The special hot melt adhesive for PPR pipe is suitable for coextrusion or coating process. The recommended extrusion temperature is 160 °C, 180 °C, 200 °C, 220, and 230 °C.

     Table 2: Bonding properties of BC-4HRB to different substrates (tablet temperature 230 ° C)


Base material
Substrate thickness（mm）
Bond strength（N/25mm）
standard test
Aluminum sheet
0.2
>150
GB/T2790
Steel sheet
1.0
>200
GB/T2790
Copper sheet
0.2
>80
GB/T2790


Instructions

Co-extrusion coating.


Packaging, storage and transportation

Packed in paper-plastic composite bags lined with plastic bags, each bag has a net weight of 25KG; it is protected from the sun, rain and moisture.


Note: The above data is typical of the laboratory, true and reliable, for reference only, no formal quality commitment.


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