**HW-777 - Weatherproof sealant for solar photovoltaic**
**Product Overview**
HW-777 is a high-performance weatherproof sealant designed for photovoltaic solar panels. It combines excellent bonding, waterproofing, insulation and weather resistance to meet the long-term operation requirements of photovoltaic systems in extreme environments. Its environmentally friendly and non-toxic formula and convenient construction characteristics are suitable for sealing and protecting various photovoltaic modules and their supporting structures.
**Product Features and Advantages**
1. **Excellent Weather Resistance**
- Long-lasting UV resistance: no yellowing, no cracking, ensuring the life of the sealant is up to **50 years**.
- Adapt to extreme climates: stable performance in high and low temperatures, hot and humid environments, and dry environments.
2. **Strong Adhesion**
- Can adhere firmly to glass, aluminum frames, metal brackets and other common photovoltaic materials without primer.
- Changes with thermal expansion and contraction, providing a long-lasting and reliable bonding effect.
3. **Excellent waterproof performance**
- Perfect sealing to prevent rain and moisture from intruding, protecting photovoltaic modules from corrosion and leakage risks.
4. **Insulation and safety**
- High-efficiency insulation: prevent current leakage and ensure safe operation of photovoltaic systems.
- Flame retardant performance: certified by international fire protection standards, effectively inhibiting the spread of flames.
5. **Elasticity and flexibility**
- High elastic modulus design absorbs deformation caused by mechanical stress and thermal expansion and contraction, maintaining long-term sealing effect.
6. **Corrosion resistance**
- Salt spray erosion resistance, suitable for installation and use in coastal and high-humidity areas, extending the life of components.
7. **Environmental protection and safety**
- Low VOC formula, safe and non-toxic, in line with environmental standards, and does not pollute the environment.
8. **Optical compatibility**
- Does not affect the light transmittance of the transparent area of the glass, maximizing the efficiency of solar cells.
**Application scenarios**
- Bonding and sealing of photovoltaic module frames
- Fixed caulking between solar panels and brackets
- Sealing of external vents and interfaces of photovoltaic systems
- Protective sealing of photovoltaic systems in extreme climate areas
**Packaging specifications and colors**
- **Packaging form**: 300ml ink cartridge, 600ml sausage, 20L barrel (customizable)
- **Color selection**: black, white, transparent (other colors can be customized on demand)
**Storage and shelf life**
- **Storage conditions**: dry and ventilated environment, temperature ≤25ºC, avoid direct sunlight.
- **Shelf life**: 12 months from the date of production.
**Certification and testing**
- Meets international fire protection, weather resistance and environmental protection certification standards.
- Verified by salt spray test, UV aging test and high and low temperature resistance test.
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This sealant not only provides all-round sealing protection, but also significantly extends the service life of photovoltaic modules, providing strong guarantee for the efficient operation of photovoltaic systems.
If you need more detailed technical parameters or sample support, please feel free to contact us!
| PERFORMANCE DATA |
|
|
| Test Parameter |
Unit |
Result |
| As Supplied Tested at 23ºC and 50% RH |
| Specific Gravity |
g/ml |
0.98±0.02 |
| Flow (sag or slump) |
mm |
0 |
| Extrusion Rate |
ml/minute |
180 |
| Skin Time |
minute |
5~10 |
| Tack-free Time |
hour |
≤1.0 |
| Curing time (5mm) |
hour |
≤10 |
| As Cured-after 21 days at 23ºC and 50% RH |
| Durometer Hardness, Shore A |
Points |
30 |
| Movement Capability |
% |
35 |
| Tensile/Modulus at 50% Elongation |
Mpa |
0.45 |
| Tensile/Modulus at 100% Elongation |
Mpa |
0.5 |
| Ultimate Tensile Strength |
Mpa |
0.52 |
| Ultimate Elongation at Break |
% |
465 |
We use raw materials supplied by the world's leading chemical giants,
Chemical material inventory of thousands of tons or more.Have more production capacity than peers.
The production process of the adhesives is completely enclosed to prevent external temperatures and various uncontrollable factors from affecting the quality of the product.
FINISHED PRODUCT STORAGE WAREHOUSE
APPLICATION
Apply to clean, dry and grease-free surfaces. Cut the nozzle at 45°angle to the desired shape and size. For better appearance, cover outside of joint areas with masking tape before application. Tool immediately after sealant application and remove masking tape before sealant skins.
SCOPE OF APPLICATION AND APPLICATION SCENARIOS
CAUTION
Uncured silicone can irritate eyes and skin. If contact is made with eyes, flush with water for 15 minutes and seek medical advice. Use in well ventilated area and keep out of reach for children.
LIMITATIONS
1.Unsuitable for curtain wall structural applicatio
2.Do not use for below ground.
3.Do not use when substrate temperature is above 50ºC or surfaces that are wet, oily, greasy, dusty or dirty.
4.The surfaces coated with paint are unsuitable for sealant.
5.Do not clean or treat the sealant with materials, solvents or cleaning agents that may affect or discolor the sealant, particularly during sealant cure.
STAFF CONSTRUCTION SCENE
HEALTH AND ENVIRONMENTAL INFORMATION
To support Customers in their product safety needs, HONGWAH has an extensive Product Stewardship organization and a team of Product Safety and Regulatory Compliance (PS&RC) specialists available in each area.
PROJECT CASE
EXHIBITIONS
CARGO TRANSPORTATION
FAQ
1. Are you a manufacturer?
Yes. We are a manufacturer of silicone sealant with standardized modern production facilities in Guangdong Province, China. A top 5 high-tech company in the industry.
HONGWAH has a 395,000 square foot silicone sealant factory in Jiangmen, Guangdong, China with 16 years of experience in this manufacturing area.
With a total investment of 800 million RMB, we have provided very high quality services to customers from 50 countries.
Our commitment to product quality and professional production team's honest and uncomplicated manufacturing style ensure our customers' trust in our products' consistent performance and superior performance.
2.How soon can I get an updated quote?
We can provide a quote within no more than 24 hours, provided we know all the details of the requirements.
3. Do you accept private label OEM production?
Yes. We can do OEM for our customers.
4. Can I get a sample before I order?
Of course you can. Generally, we provide 1-5 pieces of free samples. The courier fee is borne by the customer. Thank you for your understanding.
5. How long will it take you to complete my order?
It depends on the quantity of your order. Generally, we only need 5 days to produce 20,000 pieces with a capacity of 1,600 tons a month, after receiving your payment.
6. How do you ensure quality?
We have a strict quality inspection system, from raw materials to finished products, the materials must be checked and signed by QC colleagues.
7.Can I visit your factory?
Welcome. Please let me know your travel plans and we will pick you up and book your hotel.
8.How to find the right sealant?
Please tell me the purpose of your application, the base material, the application method and all your requirements.
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