In the fields of infrastructure construction and building waterproofing, the performance of waterstop sealants directly impacts the durability and safety of engineering structures. Tengyu Chemical, a professional supplier of high-performance sealants based in Shandong, China, has become a trusted partner in the international market thanks to its diverse product range and global service network. This article highlights its core product – the TP640-220/400 Water Swelling Polyurethane Sealant, an innovative material that combines efficient water stopping, expansion sealing, and environmental performance, providing reliable waterproofing solutions for global customers.
- Company Strength: A Global Sealant Solution Provider
Established in 2013, Tengyu Chemical specializes in the R&D, production, and export of high-performance sealants. Its product portfolio includes eight major series: waterproof coatings, silicone sealants, acrylic sealants, pu adhesive polyurethane, MS sealants, inorganic coatings, wood adhesives, and rebar adhesives. As a factory-direct supplier, the company’s core advantages are "high quality at competitive prices and global service." Through strict quality control and efficient supply chain management, it provides customized sealing solutions to customers in over 100 countries and regions, making it a trusted partner in international engineering projects. - Core Product Advantages: TP640-220/400 Water Swelling Polyurethane Sealant
2.1 Dual Sealing Mechanism for Efficient Water Stopping
The TP640-220/400 is a Hydrophilic Polyurethane Sealantmade from a polyurethane prepolymer base, innovatively integrated with water-swelling units to form a dual protection system of "elastic rubber sealing + volume expansion water stopping." After curing, the sealant can resist water pressure up to 2.5MPa, forming a dense waterproof layer at concrete cracks or joints, effectively blocking leakage paths. It is particularly suitable for waterproofing projects in high-pressure environments.
2.2 Superior Expansion Performance for Complex Conditions
The product offers two models: TP-220 (expansion rate ≥220%) and TP-400 (expansion rate ≥400%), meeting the needs of different scenarios. The high expansion rate allows the sealant to quickly fill gaps, ensuring tight adhesion even on surfaces with minor cracks or unevenness, thereby guaranteeing long-term sealing effects.
2.3 Eco-Friendly and Easy to Apply
Single-component design: No mixing required, applied directly with a standard caulking gun, simplifying the operation process.
Strong substrate adaptability: Adheres firmly to wet, smooth, or rough concrete surfaces without additional treatment.
Safe and environmentally friendly: Certified for contact with drinking water, VOC content ≤200g/L, TDI residue ≤5g/kg, complying with international environmental standards.
2.4 Cost-Effective and High-Performing
Compared to traditional steel-edged rubber waterstop belts or waterproof tapes, the TP640-220/400 is more cost-effective while offering superior waterproofing performance. Its volume expansion retention rate after long-term immersion is ≥90%, significantly reducing maintenance costs and improving overall project efficiency.
- Typical Application Scenarios: Comprehensive Waterproofing Protection
Underground engineering: Waterproofing for joints in subway tunnels, underground parking lots, and utility tunnels.
Hydraulic engineering: Anti-seepage treatment for pools, sewage treatment plants, and irrigation channels.
Municipal facilities: Repair of bridge expansion joints and road tunnel cracks.
Industrial construction: Sealing for equipment foundations and pipe penetration wall sleeves.
Civil engineering: Moisture-proof treatment for basements, bathrooms, and other damp areas.
- Service Commitment: Creating a Win-Win Future for Global Customers
Tengyu Chemical adheres to the principle of "quality first, customer foremost" and provides:
Customized solutions: Recommends TP-220 or TP-400 models based on project requirements.
Technical guidance and support: Professional team offers construction training and on-site guidance.
Fast logistics response: Global warehouse network ensures timely delivery.
After-sales guarantee: 9-month warranty period with full project tracking.
- Conclusion: Choose Tengyu Chemical to Build a Waterproof Great Wall Together
Amid the dual challenges of climate change and aging infrastructure, the reliability of waterproofing engineering is crucial. Tengyu Chemical’s TP640-220/400 Water Swelling Polyurethane Sealantredefines waterstop standards with innovative technology, offering global customers a "zero leakage" promise. Whether for multinational engineering groups or regional contractors, choosing Tengyu Chemical means selecting a technologically advanced, service-oriented, and cost-optimized partner. Let’s work together to protect the lasting safety of every structure with high-quality sealants!