Wuhan Handern Plastic Waterproof Membrane
DATE：2020/8/14 8:29:04 / READ： / SOURCE：This station
Wuhan Handern Plastic Waterproof Membrane
Building waterproofing is an important part of decoration projects. Traditional waterproofing membranes often use bitumen membranes or petroleum asphalt paper tire felt products. Although this ancient waterproofing material has good waterproof performance, it has poor aging resistance, high temperature sensitivity, extensibility, heat resistance and low temperature performance. Poor, the country has recently restricted its development. In order to meet the ever-expanding market demand, the development of polymer waterproofing membranes (including plastic waterproofing membranes) has been focused in recent years. www.handern.com Meltblown non-woven equipment1. As a building waterproofing material, polymer waterproofing membranes require the following properties: www.handern.com meltblown non-woven equipment
1. Extensibility
Building waterproofing membranes should have a large elongation rate to adapt to changes in the base layer or cracks. Elongation refers to the ratio of the elongation to the original length when the sample is stretched to break. The elongation of rubber waterproofing membrane can reach 400% ~ 500%, and that of plastic can reach 200% + 250%. www.handern.com Meltblown non-woven equipment
2. Low temperature flexibility
Waterproof membranes are used outdoors, and the use temperature may be very low in winter. If brittleness occurs at low rents, it may cause waterproof failure due to cracks in the base layer. There are two commonly used methods to express low-temperature flexibility: one is the low-temperature bending test; the other is the elongation at low temperature or the percentage of elongation at room temperature, as specified in the Japanese standard JISA6008 "Synthetic polymer waterproofing membrane" The elongation should be greater than 450% at 20C, and greater than 200% at -20C. www.handern.com Meltblown non-woven equipment
3. Penetration resistance
This performance indicates whether the coil is dense and whether there are pinholes. Use a special impermeability tester (GB 328 (Asphalt Waterproof Coil Inspection Method") to determine.
4. Perforation resistance
Indicates whether there will be pinhole water leakage when the roof is hit by a heavy object. Corresponding test methods are specified in CB12952-91 (polyethylene waterproof membrane).
5. Weather resistance
Usually heat aging is used for treatment within a specified temperature and time, and the relative change rate of certain properties is used to express its weather resistance, such as the relative change rate of tensile strength, elongation at break, and low temperature performance; or artificial weathering aging Method, stipulate temperature, humidity, rainfall and ultraviolet light exposure etc.
6. Have a certain degree of acid and alkali resistance www.handern.com meltblown non-woven fabric equipment
Usually the sample is immersed in a certain concentration of acid-base solution for a certain period of time, and the relative change rate of some of its properties is measured to indicate its acid and alkali resistance.
2. Wuhan Hyundai Plastic Waterproof Membrane, as one of the polymer waterproof membranes, has the following performance advantages:
(1) The extensibility is good, and it can adapt to the cold and hot expansion of the base layer without cracking the field, etc.; charm wood.
(2) Good low temperature performance i can still maintain good flexibility and elongation at low temperatures:
(3) Good mechanical properties and permeability resistance. Their tensile strength, tear resistance and abrasion resistance are very good, so they are not susceptible to mechanical damage;
(4) Long service life. Through reasonable formula design, use of appropriate additive tables and reasonable design and construction of waterproof system, plastic waterproofing membrane has good weather resistance and heat resistance, so the service life is longer than that of asphalt felt Much longer; www.handern.com meltblown non-woven equipment
(5) Easy construction. Plastic waterproofing membranes can be used for cold construction. Generally, they are single-layer waterproof and can be laid loose or pasted. Compared with the roof waterproofing system of three felts and four oils, the single-layer structure of the plastic waterproofing membrane is much simpler, saving time and labor, and the construction cost is low; in addition, compared with the rubber-based waterproofing membrane, its raw materials are relatively cheaper, easy;
(6) There is a certain degree of decorativeness. The single-layer plastic waterproofing membrane roofing waterproof system for exposed construction, the membrane can be colored to give the roofing decorativeness.
Due to the above-mentioned advantages of plastic waterproofing membrane, its usage is increasing day by day, with more and more varieties and continuous improvement in performance. It has been developed rapidly in recent years and its application is very widely recorded. www.handern.com Meltblown non-woven equipment
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