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北京茂华聚氨酯建材有限公司

ABOUT

HD-DB-30 Rigid PU Foam Systems for Spraying

Beijing Maohua PU Building Materials Co., Ltd.

HD-DB-30 is double-component rigid PU foam system specially designed for spraying. B-component is modified polyisocyanate(MDI), while A-component is made up of polyether polyalcohol, blowing agent,catalyst and stabiliser,etc. The systems is featuring of rapid reaction and solidification and thus applied to the thermal insulation, refitting and sealing for cold rooms, roofs, walls, tanks, containers and cargo ships.etc.

Physical Properties



A Component B Component
Item Index Item Index
Hydroxy Content (MgKOH/g) 450±50 -NCO Content (%) 30-33
Viscosity (25℃)(MPa.s) 1000±300 Viscosity (25℃)(MPa.s) 200±40
Specific Gravity (25℃)(g/cm3) 1.180±0.05 Specific Gravity (25℃)(g/cm3) 1.235±0.02

        Proportion of Weight:A:B=100:(100-120)

        Peaction Time:(Data of Laboratory Test, Working Temperature at 25℃)



Reaction Time HD-DB-30
CT(sec) 3-5
GT(sec) 10-15
TFT(sec) 18


Foam Performance

Item Value Testing Method
Overall Density (kg/m3) 35-40 GB6343-86
Core Density (kg/m3) 30-32 GB6343-86
Comprissive Strength (MPa) ≥0.15 GB8813-88
Thermal Conductivity (W/m.K) ≤0.025 GB10294-88
Closed Cells Content (%) ≥90 ISO DIS4590
Dimensional Stability (%) ≤3 GB8811-88
Water Absorption (%) ≤3 GB8810-88


        Packaging:Galvanized Zinc Metal Barrel。A Component:200kg/barrel;B Component:250kg/barrel
        Shelf Life:6 months