Polyurethane waterproof coating for railway bridges DTPU-405, DTPU-406 polyurethane waterproof coating is a two-component reactive curing polymer waterproof coating, component A is a polyurethane intermediate obtained by reacting polyether polyol and isocyanate, B material is A color liquid consisting of a curing agent, a thickener, and a filler.

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Polyurethane waterproof coating

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Product description

Polyurethane waterproof coating for railway bridge

DTPU-405, DTPU-406 polyurethane waterproof coating is a two-component reaction-curing polymer waterproof coating, component A is a polyurethane intermediate obtained by reacting polyether polyol and isocyanate, material B is made of curing agent, thickening A color liquid composed of a filler and a filler. When using, mix the A and B components in a certain proportion, stir evenly, apply on the base surface to be applied, and react to cure into a flexible, tough and durable waterproof coating after several hours.

Technical indicators

Executive standard GB/T 19250-2013

project	Polyurethane coating directly with waterproof membrane	DTPU-401	Polyurethane coating directly with waterproof layer	DTPU-402
Tensile strength / MPa ≥	3.5	4.0	6.0	7.0
Elongation at break /% ≥	450	600	450	700
Tear strength / (N / mm) ≥	35	40	35	40
Low temperature bending / oC ≤	-35 oCNo crack	No crack	-35 oCNo crack	No crack
Impervious to water (O.3MPa 120min)	impermeable	impermeable	impermeable	impermeable
Solid content / (%) ≥	98	98	98	98
Dry time / h ≤	4	4	4	4
Dry time / h≤	24	16	24	16
Bond strength / MPa ≥	2.5	3	2.5	3

GB 2 type polyurethane waterproof coating

GB 1 type polyurethane waterproof coating