According to the China Society for Composite Materials Technology Development and Advisory Committee members Zhaohong Han introduced , building insulation materials can be divided into inorganic and organic . Commonly used inorganic materials exterior insulation rockwool , perlite , foam cement ( concrete ) , foam glass and glass beads , etc., although there are good fire performance , but the high thermal conductivity, thickness inevitable increased building load and increase construction costs . Organic wall insulation polystyrene foam (PS, of EPS, XPS II ) , polyurethane foam (PU) and phenolic foam (PF) , etc., with low density , low thermal conductivity and easy construction . EPS, XPS burning class B2 level ( flammable ) , there will be heated above 80 ℃ melting soften , shrink drip, smoke billowed from the fire and produce gas. PU flame rating is also the B2 level , though slightly higher softening temperature (110 ℃), no droplet phenomenon , but smoke gas hazards arising after the great fire .
In the 1980s , foreign scientists through the phenolic resin and its products , and found that they have outstanding flame , smoke-free , non-toxic characteristics ( referred to as FST characteristics ) , the degree of flame made of phenolic foam polystyrene ratio dilute foam and polyurethane foam is better . PF flat panel thickness of only 30mm 1700 ℃ flame subjected to 10 minutes after injection , only a slight charring but not burning surface wear , neither fire nor emit smoke and toxic gases .
It is understood that since the 1990s , including PF , including phenolic composites have been greatly developed , first by the British , the United States and other countries military importance , it is used in aerospace, defense and military fields. Later PF has been used in ships, railway stations, oil wells and other places stringent fire safety requirements , and gradually to hospitals, public and civil areas of sports facilities and building housing. PF Since low thermal conductivity, compared to traditional insulation materials such as rock wool, glass wool and perlite , etc. , and its high performance energy-saving insulation about 1 times . People recognized the energy saving insulation performance at the head of all insulation materials , it was also called " heat of the King" or third -generation insulation materials. Such as expanded perlite insulation thickness required 60mm, 25mm and PF can only achieve the same insulation effect.Sellotape
In recent years, China's major fire accidents continue to occur , analysis of the main reason for the fire , and its use of flammable materials have a great relationship . Jinan University Technology Center phenol development, development and production of efficient , temperature and phenolic resin foam does not need special heat curing agent , which can be foamed and cured at lower temperatures (-5 ℃ above ) , low foam production costs, the operating process is simple , not only in the factory , but also conduct on-site construction and field operations , has become China's new generation of highly efficient insulation material. The insulation material in the domestic first field insulation for field operations, has been used in insulation works Yanzhou Mining Group , Shandong Electric Power , Jinan Steel , Zhongyuan Oilfield , East China Petroleum Administration Bureau and other units , and achieved good economic and social benefits.Washi tape
On this basis , Jinan University phenolic Technology Center using advanced production technology , which uses a continuous process instead of backward production batch production process. October 2002 , PF foam composite board first in the country to achieve a continuous production, the product successfully used in central air conditioning and ventilation systems , by the HVAC design experts and businessmen praise. 2004 , phenolic resin production technology and continuous foam composite technology through a national building materials new products and technologies identified . In 2005, the phenolic resin production technology and continuous foam composite construction materials technology won the National Science and Technology Progress Award. Expert evaluation is given : Phenolic resin production technology and continuous foam composite technology has reached the leading domestic level and international advanced level ; companies and products meet national standards . The product is produced with a ventilation pipe , with insulation and durable , lightweight energy saving, clean and beautiful , fireproof waterproof , easy labor and other characteristics, the performance indicators are in line with industry and national standards and regulatory requirements . Currently, the product has been used in the Beijing subway renovation , new construction ( Metro Line 5 , Line 10 , the Olympic Line , etc. ) , the Water Cube and other sports stadiums, and convention centers, shopping malls, supermarkets , hospitals , schools and old residential buildings renovation of HVAC systems and other public facilities .
Although China's current production of PF compared with foreign countries , there is still a gap in technology and construction applications, but to improve the fire performance, the country has three research and development of composite PF board , through the National Fire Protection Building Materials Quality Supervision testing centers , the burning properties of GB 8624A level . Of particular concern is that in recent years, China's relevant research institutes and enterprises in the phenolic resin and foam technology has been a new breakthrough , one of which is to overcome the dregs PF chalking , brittleness and low intensity shortcomings ; their Second, the costs continue to decrease PF closer PS; third is close to neutral pH value of the product of non-corrosive metal .Masking tape
Under the existing comprehensive strength , performance, exterior insulation material is difficult to co-existence . To take into account the building energy-saving insulation , or full tilt to eliminate fire hazard ? In this debate , in the end what kind of material can be absolute dominance in the building 's exterior wall systems , is still unable to conclusions. Energy-saving insulation materials in China Association executive vice president Hu Xiaoyuan opinion, the existing inorganic insulation materials research should focus on the production process to reduce energy consumption , limit emissions of dust and fiber , reduce the amount of bonding agent. Organic insulation materials research should focus on to find a more suitable blowing agents , flame retardant materials to improve and reduce the cost of production materials.Wholesale masking tape
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