Polyethylene acrylic waterproof coils trap questioning vortex Experts say don't "abuse"

China Coatings Network
News:
recently circulated on the Internet and WeChat a view that some people believe that "polyethylene acrylic waterproof coils, regardless of material properties or the reliability of construction applications, there are major defects, not suitable for use as a waterproof material." "This person even believes that from the standards and norms to completely eliminate polyethylene acrylic waterproof coil products. This view caused a heated debate in the industry for a while.
is the polyethylene acrylic waterproof coil what kind of product is it? Should it be eliminated? How should a waterproof material be viewed correctly? Recently, the author consulted the waterproof industry related people, listened to their views on polyethylene acrylic waterproof coil.
"I think it's not scientific to simply confirm or deny a certain type of waterproof material, because everything is complicated." From dialectics, things have a good side, there are bad ones, to see separately, to see its main aspects, to see where it is used, how to use, with whom, who to use. Ye Lin, vice chairman of the expert committee of the Professional Committee on Waterproofing Technology of the Chinese Architectural Society, said with a long slogan.
of The Yelin standard is China's waterproof industry Thai doo-class experts, and building waterproof played more than half a century of intersection, in-depth engineering site countless. He is located in the Beijing Institute of Construction Engineering Construction Engineering Quality Forensic Center, every year there are many cases of housing leakage caused by disputes, accountability and other judicial identification.
Ye Linbing said that from the engineering cases he came into contact with and forensic cases, no waterproof material is certain, which waterproof material is certainly not. Like the waterproof industry's largest application of SBS modified asphalt waterproof coils, some manufacturers in order to reduce costs in their raw materials mixed with a large number of waste glue powder, resulting in poor material performance, or SBS modified asphalt waterproof coil hot melt welding is not in place caused by leakage caused by the case of more disputes. Polyethylene propylene waterproof material produced from polyethylene raw materials, there are also many good engineering cases, such as some subway projects, basement projects, more than 10 years or no leakage occurred.
The bonding between polyethylene acrylic waterproof coils is generally achieved by bonding polymer cement bonding materials with acrylic or polyester fibers, and this bonding construction method has been criticized by some professionals because it belongs to the bonding between different materials, and is not closed waterproof sealing edge.
In this regard, the China Construction Industry Association Building Waterproof Branch Secretary-General Qu Hui said, with cement glue to connect polyethylene acrylic waterproof coil, large-faced paving is no problem, the key is to tie the edge, need to avoid short, improve the construction process.
Quhui introduced, polyethylene propylene waterproof coil and non-cured waterproof bond composite waterproof construction technology was included in the Ministry of Housing and Construction in 2014 to promote the application of 10 new technologies. The use of non-cured waterproof bonding materials makes up for the innate deficiency in the connection of polyethylene acrylic waterproof coils. She also stressed that in order to achieve a good waterproof effect, polyethylene acrylic composite waterproof coil products in the construction process must pay attention to the overall waterproofing efficiency of the structure, rather than emphasizing the waterproof coil body material alone to prevent water penetration capacity.
further explained that many projects currently use two layers of polyethylene acrylic waterproof coils, the wrong seam (1/2 or 1/3) to tie, so that more safe. In the whole waterproof system, the layer structure acts as a barrier to leakage.
said that polyethylene is a plastic material, in the range of 80 degrees C by heat deformation can be restored, waterproof layer generally does not exceed this temperature. And the vast majority of waterproof layer outside there will be a protective layer, polyethylene acrylic waterproof coil will not be exposed for use, will not be directly exposed to ultraviolet light, will not affect its anti-aging performance.
" Why there are so many people against the use of polyethylene propylene waterproof coil, one of the most important reasons is that there are many small manufacturers, small workshops with polyethylene recycled material to do polyethylene propylene waterproof coil, affecting the useful life of the material. In Shandong, Hebei and other places, some traders make foreign garbage into polyethylene 'N' sub-materials, sold to Liaoyang, Liaoning Province and other places in some workshops. Where the production of polyethylene acrylic waterproof coils per square meter only sell three or four yuan, simply can not play a waterproof role, the impact on the industry is also very large. One industry source, who did not want to be named, said.
" polymer polyethylene acrylic composite waterproof coil must use real polyethylene particles raw material, with a single thermal pressure composite. At present, a large number of fake and inferior polyethylene propylene composite waterproof coils on the market, is the use of recycled materials for thermal pressure composite. The price difference between recycled materials and real native raw materials is 2 to 3 times. On the market 0.7 mm thick real polyethylene acrylic composite waterproof coil prices are more than 20 yuan, and poor quality polyethylene acrylic composite waterproof coil only sold 3 to 4 yuan, not only disrupt the normal market order, to the building leakage hidden dangers, but also caused a misunderstanding, people think that polyethylene propylene composite waterproof coil quality is poor, leading some experts even suggested to cancel the polyethylene acrylic composite coil. Du Wei, chairman of Beijing Holy Waterproof Materials Co., Ltd., complained to the author.
Du Wei introduced that the real polymer polyethylene acrylic composite waterproof coil raw materials should be the regular petrochemical manufacturers produced linear low-density polyethylene particles raw materials, pure transparent white regular flat round particles. And informal manufacturers to buy recycled raw materials are long round like, color is very mixed, grainy brown, unclean. Polyethylene acrylic waterproof coil core layer produced with real raw materials is transparent, hand strength can not tear apart waterproof coil, and poor quality recycled material polyethylene acrylic waterproof coil color gray, hard and brittle, a little force can be torn apart.
industry, whether to use raw materials, polyethylene acrylic waterproof coil production enterprises product quality is good or bad "watershed."