DESCRIPTION
R931 Prefabricated Building Special Silane Modified Polyether Adhesive is a single component neutral curing sealant product with a displacement capacity of 25 levels. This product has good adhesion ability to building materials such as cement, concrete, and stone, and has the characteristics of low modulus, good flexibility, and environmental friendliness. It can be widely used in the fields of prefabricated building exterior walls, balconies, and indoor joint filling and sealing.
nine hundred
Application scope
Prefabricated building exterior walls, balconies, indoor joint sealing and other fields.
Stone curtain wall filling and sealing.
  Product characteristics
Single component packaging, easy to use, good extrusion performance within the usual construction temperature range;
Excellent adhesion to building materials such as concrete, stone, and steel;
Excellent aging resistance, not damaged by sunlight, rain, snow, ultraviolet rays, and ozone; Excellent high and low temperature resistance, the cured rubber strip has excellent performance at -40 ℃~120 ℃;
High displacement capability: With the expansion and shear deformation of concrete joints, the colloid itself is not damaged, maintaining good bonding and sealing performance;
Low modulus: The low stress generated during passive deformation ensures that the concrete surface is not damaged;
High elasticity recovery ability: It can move back and forth along the seam, with fast response, quick recovery, and minimal deformation.
Environmentally friendly products: ultra-low VOC, non-toxic and odorless, no pollution or corrosion to the substrate;
Good paintability: The surface has paintability, which can effectively solve problems such as decorative mortar and real stone paint on the adhesive surface< br />
 
Technical parameter table
Main chemical components
Modified silane
brand
R931
Appearance of rubber material
Gray paste like substance
Pendulum (mm)
0
Squeezing ability (ml/min)
two hundred and sixty
Dry time (min)
forty
Tensile elongation at break (%)
nine hundred
Tensile strength (Mpa)
≥ zero point six
Elastic recovery rate (%)
≥ eighty
Tensile modulus (MPa)
≤ zero point four
Fixed tensile adhesion
No damage
Cold drawing hot pressing, immersion, and adhesion after heat treatment
No damage
thermal ageing
Thermogravimetric analysis (%)
three
 
Cracking and powdering
not have
curing mechanism
R939 prefabricated building sealant is cured by the hydrolysis and dealcoholization of silane and moisture in the air, and then condensed to form a moisture absorbing curing adhesive. Once the colloid is opened, it absorbs moisture from the air and gradually solidifies from the surface to the deeper layers, becoming an elastic body. The higher the temperature and humidity, the faster the curing process; The curing speed is slow in low temperature and low humidity environments.
Packaging specifications
R939 uses aluminum film: 600ml/piece, 20 pieces/box
Storage method
This product absorbs moisture and solidifies. It must be stored in a low temperature (below 27 ℃) and dry environment (relative humidity below 20%), with a shelf life of 6 months.