Product Details
Introduction
SMP581 silane modified polyether sealant a one-component
neutral-curing low-modulus sealant product with a joint movement
capacity of class 20. The product has good bonding ability to most
building materials and plastics such as concrete, stone, glass,
aluminum, wood, polycarbonate (PC), etc. It can be widely used in
prefabricated buildings, urban integrated pipe corridors, balconies
and indoor and other fields of caulking and sealing of joints of
internal and external walls of various buildings.
Product Features
- Environmental product: ultra-low VOC, non-toxic and tasteless, no pollution and no
corrosion to the substrate;
- Good flexibility: low modulus, which can reduce the impact of internal stress
caused by seam displacement changes on the durability of the
sealant and reduce the risk of debonding and cracking. It has good
flexibility and can maintain good bonding and sealing performance
under the change of displacement of building joints.
- Excellent adhesion: excellent adhesion to most building materials and plastics such
as concrete, stone, glass, aluminum, wood, polycarbonate (PC);
- The joint movement capacity is ±20%. For the normal expansion and
shear deformation of building joints, this product can maintain the
same performance and play an effective sealing and bonding effect;
- Excellent elasticity, weather resistance and fatigue resistance.
- Good paintability: the surface is paintable, and with Baiyun adhesion promoter, it
can better solve the problem of decorative mortar, real stone paint
and other finishing treatment on the glue surface.
- Good operability: One-component, easy to operate, has good extrudability in the
range of 4℃~40℃, and can be applied by extruding with a sealant
gun.
Main applications
- Caulking and sealing of internal and external walls of assembled
buildings, urban integrated pipeline corridors and home interiors.
- Bonding of various building materials, such as concrete, stone,
glass, aluminium, wood, etc.
- Other bonding and sealing applications in the construction field
where this product is suitable.
Typical technical parameters
Item | Technical specifications | Typical value | Testing standards |
Tack Free Time (min) | ≤150 | 70min | GB/T 13477 |
Curing rate (mm/hr) | ≥3 | 4mm | GB/T32369 |
Hardness (Shore A) | 15~35 | 25 | GB/T 531 |
Tensile strength (MPa) | ≥1.2 | 1.4 | GB/T 528 |
Elongation at break (%) | ≥500 | 750 |
Joint Movement Capacity (%) | ±20 | ±20 | GB/T 22083 |
Elastic recovery rate | ≥60% | 75% | GB/T 13477 |
Tensile modulus,MPa | 23℃ | ≤0.4 | 0.28 |
-20℃ | ≤0.6 | 0.28 |
Fixed-extension adhesion | No damage | No damage |
Adhesion after immersion in water | No damage | No damage |
Bonding after cold drawing - hot pressing | No damage | No damage |
Usage restrictions
- Not suitable for use in locations where the operating temperature
is permanently above 80°C.
- Not suitable for use in glass mounting applications.
- Not suitable for use in densely ventilated areas where the sealant
needs to absorb moisture from the air to cure.
- Not suitable for use in areas subject to continuous water immersion
or year-round humidity
- Not suitable for use on materials that will leach grease,
plasticisers or solvents, such as surfaces of oil-impregnated wood.
- Not suitable for bonding polypropylene (PP), polyethylene (PE),
polytetrafluoroethylene (PTFE).
- Not suitable for work when the surface temperature of the material
is below 4°C or above 40°C.
- When bonding cement and concrete substrates, the substrate must be
completely dry and maintained for 7 days before construction,
otherwise the bonding performance will be affected.
Technical Services
- Complete product technical information is available.
- Adhesion testing, compatibility testing.
Our laboratory can provide contamination testing for our customers,
who can mail (or otherwise) the substrate chosen for their project
to us, and our laboratory will carry out the contamination test and
issue a written test report
Storage and expiry date
Stored in a cool, dry place below 27°C. The storage period is 12
months from the date of manufacture.
Guarantee
BAIYUN has passed ISO9001/ISO14001/OHSAS18001 management system
certification, and produces and controls product quality in strict
accordance with the requirements of the ISO9001 quality system.
Our company will issue a sealant quality guarantee after the user
has purchased the product and identified the construction unit and
the project.
Repairs and maintenance
Generally, no maintenance is required, if the sealant seam is
broken, replace the damaged part, simply remove the accumulated
dirt with solvent and fill it with this product, Baiyun silane
modified polyether sealant can be firmly bonded to the original
cured Baiyun silane modified polyether sealant.
Package
Net 590ml flexible film packaging.
Color
White, Black, Grey or any other color requested by the customer.
Steps in use
Before using this product, the operator must read the product
safety information carefully.
- The work surface must be clean, dry and free from dirt.
- Apply protective tape to both sides of the work surface and use a
suitable lining material in the caulking.
- Cut the spikes to the required size and apply the amount of sealant
to provide adequate contact with the sealant sealing surface.
- Trim and remove the protective tape within 10 minutes of
application.
- Good ventilation should be maintained during the application and
curing process.
- To ensure optimum bonding results, a bonding test should be carried
out before the work starts and must be used in conjunction with a
primer if necessary. Periodic peel and stick tests should be
carried out during the construction process to ensure quality.
Safety instructions
This product is not toxic when fully cured, but contact with eyes
should be avoided until cured, if contact is made, flush with
plenty of water and seek medical attention; uncured product should
be kept away from children.
Conformity to standards
ISO 11600 20LM
GB/T 14683 20LM
JC/T 881 20LM
Note to users: The information contained in this document is based
on what we believe to be reliable information. Due to the wide
variety of circumstances, it is not possible to know everything and
therefore we cannot guarantee the correctness and suitability of
our products for certain uses and applications. The user should
understand the product in detail and carry out preliminary tests
before using it and then decide for themselves the best way to use
it.
Company Profile

Humanity's desire for a better life has never changed. Wonderful
life will become more and more vivid due to professionalism and
foresight. With a pure heart and long-lasting faith, Baiyun
Technology, founded in 1985, adheres to the heart of a craftsman
and is committed to providing sealing and bonding system solutions
for building curtain walls, insulating glass, doors and windows
,civil buildings, prefabricated buildings, home decoration and
lighting, electrical appliances, home furnishings, energy,
transportation, electronics and other industrial fields, leading
the industry in safety, health, green sustainable development.
Baiyun is your perfect choice.
Baiyun Technology promises: "Better future, excellent life".
Baiyun is the one of the first production and sales enterprises for
silicone structural sealant which was approved by the State
Economic and Trade Commission. Our company was the only one of the
industry which was rated as “demonstration base for the
industrialization of the new technology of building sealant” by the
Ministry of Construction, and Baiyun has been rated as the
“International Cooperation Base” as awarded by the Ministry of
Science and Technology of the State, and the “one of the first
prefabricated building industrial bases of the State” as awarded by
the Ministry of Housing and Urban-Rural Development. Moreover,
Baiyun is the key high-tech enterprise of the national torch
program and is the enterprise with Chinese famous trademark as
approved by the Trademark Office under the State Administration of
Industry and Commerce.
Our company has established China’s first automatic continuous
production line which boasts the world’s advanced level and
proprietary intellectual property right. We also have over 430
patents (The patent for invention accounts for over 60%) and the
first CNAS laboratory of the industry whose testing ability covers
five standards. Baiyun has involved in the drafting and revision of
220 international and industrial standards and in the revision of
six international standards. Baiyun has also established a
provincial technical center, an engineering technological research
and development center, a post-doctoral research center, and an
enterprise workstation for expert academician. Baiyun works in a
professional, devoted and concentrated way and strives to play a
leading role in the chemical new materials realm and to allow users
to have wonderful experience for using our product.
Confident and passionate Baiyun staff who are full of
self-improvement and sunshine adhere to the core values of “sense
of responsibilities, create value and share fruit” and learn their
responsibilities by heart whist never forgetting their original
intention. All our staff shall work hard to realize the corporate
vision of “leading sealant brand of the world” and to become your
most loyal alliance of responsibility.
Baiyun promises to work with you to beautify the city and march
toward a brilliant future and an outstanding life.