SPRI technology is moving into the standardized era. "This is the view of China National Waterproof Building Association Zhu Dongqing SPRI technology branch of the China National Waterproof Building Association in 2012 and the Sixth SPRI technology and market seminars .
"More and more enterprises in the international roofing and building waterproofing technology exhibition, show a single layer of roofing materials is not just the single-layer waterproofing membrane technology, matched with its mechanical fasteners and rock wool, polyisocyanurate The cyanurate esters and other materials are also constantly updated, and laid a good foundation for the development of SPRI. "Zhu Dongqing In recent years, SPRI has carried out a lot of work, have achieved a lot. The next step is to the relevant standards, specifications and test methods for the preparation, publicity, carry out any real effort to promote industry standardization process.
SPRI advantage of a number of related industries pay close attention to
"We can call 2011 SPRI first year, standards, test methods and so is basically complete." Zhu Dongqing introduced last year, China's single-layer roofing project unprecedented scale, SPRI standards, experimental methods , etc. have been introduced to promote the development of SPRI technology. Paper industry, the cigarette industry, automobile manufacturing, printing and dyeing industry, the IT industry of the production plant or storage shop temperature and humidity is high demand of the industry, has started to pay attention and use of SPRI technology, these needs and jointly promote the SPRI the development of the system. At present, China has SPRI experiments of TPO (thermoplastic polyolefin) and PVC (polyvinyl chloride) membrane from national standards, SPRI technology national standards and other relevant provisions of the "single-layer waterproofing membrane roofing technical regulations being prepared.
SPRI has many advantages compared with other roofing. Zhu Dongqing pointed out that the large span roof before
STONE COATED METAL ROOFING TILE, easy to leakage of the parts of its complex node, and the insulation performance is uneven, prone to condensation dripping. SPRI has the advantage lies in the balance of high performance insulation, and able to meet the requirements of energy-efficient buildings.
STONE COATED STEEL ROOFING TILE, the SPRI more softness and extension of the node parts to prevent leakage performance than rigid joints roof a lot stronger. It can be said, the SPRI ushered in a good development opportunity.
The domestic market to be the development of technical standards to be improved
Zhu Dongqing pointed out that compared with foreign, single-layer roofing market is not large. "In the U.S., probably about 55% market share of the flat roof SPRI occupied." In his view, the SPRI industry in China to achieve such a high market share, increase the amount of SPRI engineering, but also faces many problems . Solve these problems, we should strengthen the formulation of standards to proceed.
The single ply waterproofing membrane there are two key elements of the First, wind exposing Performance, First, fire performance, both the shift and mutual restraint. "If the wind exposing performance, fire performance is not good; if the fire performance, then the wind exposing performance is not good, because the fire retardant additive flame retardant in the membrane fluidity of the resin and heat welding will be significantly decreased. "he said, to make the domestic TPO and PVC products can achieve the national technical standards, but also to meet fire protection requirements is not an easy task.
Zhu Dongqing said the wind exposing performance design is a very important part of the single-layer stone coated roofing tile roofing system, many companies this does not attach importance to the organization of specialized technical personnel for research, and simply copied the case of other enterprises. He believes this is very dangerous, because many factors affect the wind load, wind load is very different circumstances of different regions, different buildings, different heights and slopes, and different environments. Single-layer waterproofing membrane roofing technical specification for the preparation work already started, but there is still a need to wind exposing part of the single proposed to be regulated, and indicate the wind load test methods, SPRI designer must wind load and wind exposing the verification test. "Structural Load Code (GB50009) almost 50% of the chapter on the wind load design, but not applicable to single-layer roofing, so we should come up with something inside, which should be some not something added to improve the single-layer STONE COATED ROOFING TILE wind load design.
In addition, aspects of component parts, in a backward position. "Modified bitumen membrane, very few people consider accessories, when done well, put the modified bitumen membrane laid there, then the asphalt melted with a torch, and then foot the real can single-layer roofing membranes, but this method will not work, like embroidery, as each node to do by hand, otherwise the chance of leakage is very large with nodes supporting, but doing it will much easier the risk of leakage is reduced. Therefore, the node matching is one of the most minimum requirements do SPRI. "Zhudong Qing said that the China National Waterproof Building Association is stepping up efforts to develop a single-layer roofing membrane mechanically fixed criteria.
The introduction of access standards to raise the industry threshold
Zhu Dongqing said, commissioned by the Ministry of Industry, China National Waterproof Building Association is the preparation of the access conditions of the building waterproofing industry. "We now have 1500 membrane production license of the enterprise, their capacity is six times the market demand, serious excess capacity," he proposed, should the SPRI industry set a higher threshold to each access standards and industrial policies regulated businesses.
"The company has only reach a certain standard to begin investment. We believe that the new PVC and TPO production capacity should reach 3 million cubic meters a year to start 250 days, 16 hours a day-shift basis calculation, per hour per extrusion head extruding the amount of 500 kg to 600 kg. two extrusion head it means to have a 1200 kg per hour out of the amount, in order to meet the access conditions if you do not meet the requirements, and authorities at all levels will be constrained to the producer This is the contents of the access conditions and we hope that through this access policy, raising the threshold to enter the single-layer roofing industry, to ensure market stability in the industry before, due to the lack of norms and standards, the proliferation is inevitable now, we have prepared so many standards and specifications, is to curb this trend. "he said.
EDITED BY
CHINA STONE COATED ROOFING TILE
