Polytech™ ST-Sa waterproofing membrane

Scope of application

Waterproofing of basements, subways, tunnels, pipe corridors, pools, inclined roofs and flat roofs, especially suitable for waterproof projects with special environment and high waterproof requirements.

Product specifications

Thickness（mm） Wide（m） Length（m） Lap edges
1.2、1.5、2.0 1、2 20 Self-adhesive

 

Product features

1. Mechanical properties: high material strength, high elongation, impact resistance, puncture resistance, scratch resistance;

2. Adhesion performance: the polymer self-adhesive film layer has excellent adhesion performance, forming a "skin-type" full adhesion with the concrete base surface, and the waterproof effect is excellent;

3. Aging resistance: excellent UV aging resistance, heat aging performance;

4. Marine environment erosion resistance: salinity resistance, chloride ion erosion resistance;

5. Durability: HDPE can maintain good chemical stability and service life in ordinary inorganic, organic acid, alkali, salt, organic solvent and microbial environment;

6. Environmental performance: green building materials, no pollution to the groundwater environment.

Technical indicators

Executive standard: the main material meets the requirements of GB/T18173.1-2012 "Polymer waterproof materials - Part 1: Sheet"

Project Resin indicators
Homogenizing tablets
Tensile strength room temperature23℃ ≥ 16MPa
high temperature60℃ ≥ 6
Pull-off elongation/% high temperature23℃ ≥ 550
microtherm-20℃ ≥ 350
Tear strength（/ kN/m）≥ 60
Impermeable（30min） 0.3MPa, no leakage
Low temperature bending -35°C without cracks
Bonding peel strength
(Sheet & Sheet)		 Standard test conditions/(N/mm)≥ 1.5
Water immersion retention rate(23℃x168h)/%≥ 70
Implementation standard: The self-adhesive layer meets the requirements of GB/T23260-2009 "Waterproof membrane with self-adhesive layer"
Project Index
Peel strength（/ N/mm） Coils and coils ≥1.0
Coil and aluminum sheet ≥1.5
Peeling strength after immersion in water（/ N/mm） ≥1.5
Peel strength after heat aging（/ N/mm） ≥1.5
Self-adhesive surface heat resistance 70 °C, no flow for 2h
Stickiness/min ≥15

Construction steps

Base layer cleaning → Bullet line positioning → Large surface paving waterproofing membrane → Lap treatment → Detailed node treatment → Self-inspection, repair, acceptance → Lashing steel bars