Introduction of polyurethane adhesive
Polyurethane sealant is one of the three largest elastic sealants in the world, mainly used in vehicle manufacturing and construction engineering departments. It is applicable to automobile body, high-speed railway car, elevator car, container, ship, mechanical ventilation equipment, building materials and residential materials for assembly of laminate, aluminum window frame partition bonding, bathtub assembly, etc., with high impact strength and high peel strength, heat insulation, sealing and heat resistance generally up to 80 ℃, because of its excellent comprehensive performance, It can meet the requirements of modern architecture and automobile manufacturing and get rapid development. Conventional polyurethane sealant has good mechanical properties, but poor environmental protection and inconvenient construction.
Modified polyurethane sealant
The modified polyurethane sealant developed by ruilangda company, abbreviated as SPU sealant, has the characteristics of high modulus, anti pollution after curing, environmental protection, etc. It is applicable to the bonding and sealing of joints of various materials such as car body, high-speed railway car, elevator car, container, ship, mechanical ventilation equipment, building decoration, etc. it has good surface paintability and is compatible with most industrial paints. It can be painted after the surface is dry, and can not blister with the paint. Comply with environmental protection requirements, excluding harmful substances in GB18583 "limit of harmful substances in adhesives for interior decoration materials", RoHS and reach environmental protection standards of European Union, and German environmental protection standards for automotive adhesives.
application area
Hy466 sealant: used for sealing all kinds of welds and joints;
Hy465 sealant: high shear strength, used for bonding and sealing of various materials;
Hy464 adhesive: used for windshield bonding with primer, it can achieve the expected stress in a short time.
Technical parameters
Advantages
Solvent free, PVC free, isocyanate free, non-toxic, tasteless, pollution-free, neutral environmental protection.
The surface can be painted well, compatible with most industrial paints. After the surface is dry, it can be painted and baked together with the paint without blistering.
Excellent thixotropy and extrudability, wide temperature range.
For aluminum, painted steel plate and most other metals and glass, PVC, ABS, polyester materials, concrete with excellent bonding properties.
Excellent weather resistance, aging resistance, superior tensile and compression resilience.
Curing mechanism
SPU sealant is made by hydrolysis and dealcoholization of silane and moisture in the air and condensation, which belongs to moisture absorption curing adhesive. Once the gel is unsealed, it absorbs the moisture in the air and solidifies from the surface to the deep layer, becoming an elastomer. The higher the temperature and humidity is, the faster the curing will be; the slower the curing will be in low temperature and low humidity environment. Chemical resistant medium
The products can be resistant to fresh water, sewage, waste water, calcium carbonate aqueous solution, detergent, low acid, corrosive aqueous solution, mineral oil, vegetable oil, fat, fuel, organic solvent, paint thinner, high concentration acid and alkali for a long time. usage method
1. The joint surface shall be free of oil stain, dust, impurities, etc;
2. Cut the sizing nozzle into the required size and shape according to the process requirements;
3. Cut off the sealant seal, install the glue nozzle, and install it into the glue gun;
4. The sealant shall be evenly applied to the joint, and the thinnest part shall be more than 1mm; when the pneumatic gun is used, the air pressure shall be controlled at 0.3 ~ 0.5MPa;
5. The product can be colored by traditional methods after surface drying, including epoxy resin and acrylic acid coating.
matters needing attention
Avoid construction under 5 ℃ and humidity less than 20%
The pneumatic pressure shall not exceed 0.5 MPa. If it exceeds 0.5 MPa, the gas will enter the hard packing pipe, causing colloidal bubble problem
Due to the high solvent content of the coating, the surface of the adhesive will become soft. In order to obtain the best appearance and performance, the gel will be colored after curing for 24 hours.
For special chemical reactions, please contact our technical department
Packing specification
Hard packing: 310ML / drum, 50 drums / box
Soft package: 600ml / piece, 20 pieces / box
Storage mode
SPU sealant must be stored in low temperature and dry environment, with a shelf life of more than 6 months.
Safety and health
Do not contact the uncured sealant product with food and cosmetics;
The uncured sealant shall not contact the skin for a long time;
If the sealant enters the eyes carelessly, it must be rinsed with plenty of water immediately, and then ask the doctor for examination;
Keep the product out of the reach of children.
Henan ruilangda New Material Co., Ltd. is invested and built by Zhengzhou Huayu Technology Co., Ltd. It is a high-tech enterprise specializing in the research, development, production and sales of adhesives.
The company continues to meet the needs of customers with high-quality products, reasonable prices, fast and thoughtful services, and common development with customers!
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