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About UsZHONGTAI HENGBANG Engineering Technology Co., Ltd. is located in the Academician Entrepreneurship Base of Tai'an National High-Tech Industrial Development Zone, Shandong Province. The company is a comprehensive service provider specializing in engineering consulting and design, materials R&D and manufacturing, as well as operations and maintenance. With strong technical expertise and robust R&D capabilities, its products are primarily applied in critical areas such as water conservancy infrastructure projects, transportation infrastructure initiatives, and environmental protection solutions for isolating and preventing leakage from urban waste and highly hazardous industrial solid waste.
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ProductsZHONGTAI HENGBANG Engineering Technology Co., Ltd. boasts production lines sourced from countries including Germany, Italy, Denmark, Belgium, and Switzerland, adhering to rigorous quality management systems and testing standards. We are equipped with advanced testing equipment capable of evaluating tensile strength, creep resistance, UV protection, water permeability, flame retardancy, antistatic properties, chemical corrosion resistance, and oxidation performance.
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Application CasesThe product is primarily used in hydraulic infrastructure projects, transportation infrastructure projects, and environmental protection applications—including the isolation and impermeability of municipal waste and highly hazardous industrial solid waste.
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BlogPrioritizing technological advancement and innovation, our company is committed to fulfilling user needs to the fullest extent possible.
What measures should be taken to slow down the aging of Guizhou's EVA waterproof sheets?
Release date:
2020-12-17
For double-seam inflation, inflate to a length of 30–60 mm, ensuring the pressure between the two weld seams reaches 0.15–0.2 MPa. Maintain this pressure for 1–5 minutes; if there is no significant pressure drop, the test is considered合格 (pass). For single welds, T-joints, and repair areas, perform a vacuum test using a 50 cm × 50 cm grid. The vacuum pressure must be greater than or equal to 0.005 MPa, held for 30 seconds—no bubbles should form in the soapy solution for the test to be合格 (pass). Additionally, conduct indoor tensile tests: the weld seam’s tensile strength must exceed that of the base material. Quality inspections should be carried out continuously as construction progresses. Measures to delay aging can be approached from two angles: First, by directly adding anti-aging agents to the raw materials to counteract the effects of external factors like light, oxygen, and heat—such as incorporating适量 of antioxidants, light stabilizers, and dark-colored carbon black. For instance, one company added an anti-aging agent to polypropylene, and after four years of direct exposure to sunlight, the material retained only 25% of its original strength. In contrast, without the anti-aging additive, the same material would lose nearly all its strength after just 2 to 3 months of exposure to sunlight. Second, engineering solutions can be implemented to provide protective measures—for example, minimizing the amount of time materials spend exposed to sunlight or covering them with soil (with a recommended depth of at least 30 cm) or deep water. Performance features and advantages:
1. Resistant to corrosion by acids, alkalis, salts, and other media; mold-resistant; maintains performance consistently over the long term.
2. Exhibits excellent low-temperature flexural performance, maintaining good flexibility even below -35°C. It has a soft texture and adheres well to the substrate, making it ideal for applications where the underlying layer doesn’t meet quality standards. When testing asphalt mixtures on such sublayers—particularly at locations like longitudinal joints, transverse joints, and seams between old and new pavement—the material is less likely to develop steps, cracks, or loosening. Additionally, its overlap seams and fixed areas of the membrane can be heat-welded, ensuring optimal construction results.
3. Convenient, quick, and environmentally friendly construction: For example, heat welding is used for overlapping seams, creating a robust, reliable, and waterproof sealing layer. A professional construction team, advanced mechanized equipment, and standardized procedures ensure top-quality workmanship.
4. Possesses sufficiently strong mechanical properties and excellent chemical performance: for instance, it exhibits high tensile strength, exceeding 16 MPa at room temperature. Additionally, it demonstrates a high elongation at break, reaching over 550% at room temperature.
For double-seam inflation, inflate to a length of 30–60 mm, ensuring the pressure between the two weld seams reaches 0.15–0.2 MPa. Maintain this pressure for 1–5 minutes; if there is no significant pressure drop, the test is considered合格 (pass). For single welds, T-joints, and repair areas, perform a vacuum test using a 50 cm × 50 cm grid. The vacuum pressure must be greater than or equal to 0.005 MPa, held for 30 seconds—no bubbles should form in the soapy solution for the test to be合格 (pass). Additionally, conduct indoor tensile tests: the weld seam’s tensile strength must exceed that of the base material. Quality inspections should be carried out continuously as construction progresses.
Measures to delay aging can be approached from two angles: First, by directly adding anti-aging agents to the raw materials to counteract the effects of external factors like light, oxygen, and heat—such as incorporating适量 of antioxidants, light stabilizers, and dark-colored carbon black. For instance, one company added an anti-aging agent to polypropylene, and after four years of direct exposure to sunlight, the material retained only 25% of its original strength. In contrast, without the anti-aging additive, the same material would lose nearly all its strength after just 2 to 3 months of exposure to sunlight. Second, engineering solutions can be implemented to provide protective measures—for example, minimizing the amount of time materials spend exposed to sunlight or covering them with soil (with a recommended depth of at least 30 cm) or deep water. Its primary function is to prevent liquid leakage and gas evaporation. Common raw materials include: low-density polyethylene (LDPE), polyethylene (PE), high-density polyethylene (HDPE), and ethylene/vinyl acetate copolymer (EVA), among others. In geotechnical engineering, geomembranes play a crucial role in providing impermeability and isolation—while also offering reinforcement and protective functions. They are widely used in applications such as seepage control for earth-rock dams, rockfill dams, masonry dams, concrete dams, tailings dams, sewage reservoirs, canals, and storage ponds. Additionally, they are employed in subway systems, basements, and tunnel linings to ensure watertightness. Furthermore, geomembranes are utilized in highway and railway foundations to prevent water infiltration. In sanitary landfills, they are often combined with geotextiles like nonwoven fabrics and bentonite waterproofing blankets for enhanced performance. It’s worth noting that aging is an inherent property of polymer materials and cannot be entirely eliminated; however, by implementing effective measures, its progression can be significantly slowed down.
Measures to delay aging can be approached from two angles: First, by directly adding anti-aging agents to the raw materials to counteract the effects of external factors like light, oxygen, and heat—such as incorporating适量 of antioxidants, light stabilizers, and dark-colored carbon black. For instance, one company added an anti-aging agent to polypropylene, and after four years of direct exposure to sunlight, the material retained only 25% of its original strength. In contrast, without the anti-aging additive, the same material would lose nearly all its strength after just 2 to 3 months of exposure to sunlight. Second, engineering solutions can be implemented to provide protective measures—for example, minimizing the amount of time materials spend exposed to sunlight or covering them with soil (with a recommended depth of at least 30 cm) or deep water. Measures to delay aging can be approached from two angles: First, by adding anti-aging agents directly into the raw materials to inhibit the effects of external factors like light, oxygen, and heat—such as incorporating适量 of antioxidants, light stabilizers, and dark-colored carbon black. For instance, one company added an anti-aging agent to polypropylene, and after four years of direct exposure to sunlight, the material retained only 25% of its original strength. In contrast, without the anti-aging additive, the same material would lose nearly all its strength after just 2 to 3 months of exposure to sunlight. Second, engineering solutions can be implemented to provide protective measures—for example, minimizing the amount of time materials spend exposed to sunlight or covering them with soil (with a recommended depth of at least 30 cm) or deep water.
ZHONGTAI HENGBANG Engineering Technology Co., Ltd. is a comprehensive service provider integrating engineering consulting and design, material R&D and manufacturing, as well as operations and maintenance. With robust technical expertise and strong R&D capabilities, our products are prominently applied in critical environmental protection fields such as hydraulic infrastructure projects, transportation infrastructure initiatives, and the isolation and anti-seepage solutions for urban waste and hazardous industrial solid waste management. The company boasts advanced production lines sourced from Germany, Italy, Denmark, Belgium, Switzerland, and other countries, adhering to stringent quality management systems and rigorous testing standards. We are equipped with state-of-the-art equipment capable of evaluating key properties—including tensile strength, creep resistance, UV resistance, water permeability, flame retardancy, antistatic performance, chemical corrosion resistance, and oxidation stability—ensuring superior product quality. Furthermore, our enterprise has successfully obtained certifications such as CRCC, ISO 9001, ISO 14001, OHSAS 18000, and MA certificates, along with inspection reports from China’s Ministry of Railways and Ministry of Water Resources, as well as the prestigious EU CE certification. Additionally, our products have been independently tested by specialized laboratories in Russia, Australia, the United States, and other regions. We are dedicated to delivering top-quality geosynthetic materials and unparalleled services for projects spanning a wide range of applications, including reinforced earth retaining walls, soft ground stabilization, land reclamation and dike construction/maintenance, hydraulic engineering, slope remediation and ecological restoration, road construction, and mining projects.
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