Phenolic resin foam, the advantages of geometry?-3D Panel Machine, EPS Machine,ICF Machine,Manufacturer of 3D Panel Line, EPS Line-Xuelong EPS Machinery

Phenolic foam is known as the "heat of the King", an early application in missile and rocket head insulation. In recent years, as high-rise buildings, transportation, ships, aviation, space technology and other aspects of synthetic foam, thermal stability and flame resistance put forward strict requirements, making phenolic foam has been more rapid Staff. As a new multi-purpose foam, phenolic resin foam with its heat-resistant, flame retardant self-extinguishing, resistant to flame penetration, fire, etc. but no dripping widespread attention. Phenolic resin, according to China Network (www.pf-e.cn) experts, the phenolic foam is phenolic resin as the main raw material, curing agents, blowing agents and other auxiliary components, crosslinking in the resin while foaming agent gas dispersion which produces the formation of foam and foam. It has many excellent properties, first heat - the final cured phenolic foam has included a number of phenol rings connected by methylene bridge structure, thermodynamics we can see from the methylene bridge is the organic connection, affected by temperature minimum, one of the most stable connection, which makes the phenolic foam has excellent thermal stability. It can be long-term use at 150 degrees, the instantaneous temperature up to 200 ~ 300 or more, its performance is better than several other high-temperature foam. "Flame" also prominent. Phenol molecule is a good absorbent of free radicals in the pyrolysis process by breaking the methylene bridge, the production of free radicals quickly absorbed by molecules of phenol to prevent reaction to proceed, this phenomenon is extremely difficult to burn the phenolic foam; phenolic foam oxygen index of 50, without adding any flame retardant additives, flame retardant rating of B1.
Inorganic filler foam high-density phenolic oxygen index of up to 70, the combustion performance of non-combustible building materials to reach Germany DIN4102 A2-level requirements. Flame penetration resistance. Phenolic resin, according to China Network (www.pf-e.cn) experts, phenolic foam directly under the flame, with coke, no drip, no curling, no melting phenomenon, the basic foam combustion flame retention, but surface layer of "graphite foam" layer, the effective protection of the layer of foam structure, 100mm phenolic anti-fire foam capacity of up to 1h or more are not penetrating. It also "low smoke and low toxicity" - phenolic molecules, only carbon, hydrogen and oxygen atoms, can only be produced in the pyrolysis products of these three persons, in addition to any other outside of a small amount of CO toxic gases; phenolic foam maximum density of smoke 5.0%, high-density phenolic foam only 2.3%, and flame-retardant PU foam 74% compared to the maximum smoke density is quite low. Insulation: Phenolic foam has a uniform fine closed-cell structure, low thermal conductivity, the insulation performance of PU foam rather, better than the PS foam, mineral wool insulation performance ratio, light cork, perlite, glass wool, and other traditional insulation materials about twice as high. Wide temperature range. The strength of phenolic foam affected by temperature was not obvious at low temperature (or even -196 degrees) does not occur under the shrink, cold crisp, its mechanical strength is essentially the same, at 130 degrees the case of a continuous force strength can be maintained at room temperature for 90% . Operating temperature range is generally between -150 ~ 150 degrees. Corrosion-resistant anti-aging: In addition to strong base can be eroded, the ability of phenolic foam almost all of the inorganic acid, organic acids and salts of erosion.
Organic solvents such as benzene, acetone may soften it, but no significant dissolution phenomenon has been cured phenolic foam molding, long-term exposure to sunlight without significant aging, compared with other organic insulating materials, their longer service life. Phenolic resin, according to China Network (www.pf-e.cn) experts, especially phenolic foam waterproof and moisture. Closed-cell phenolic foam has a good structure, low water absorption, anti-penetration ability of water vapor in the cold condensation does not occur. Size stability: phenolic foam dimensional stability, rate of change is small, the temperature changes in the size range

1%; place at 100 degrees for two days only a few hours at the beginning of contraction of 0.3%, it would remain stable; phenolic foam thermal expansion coefficient is small, similar to aluminum, it will not appear due to the use of different coefficients of expansion, arising from the phenomenon of delamination fracture. Acoustic Performance - phenolic foam has excellent absorption properties, the hole-type structure is more conducive to absorbing foam. With phenolic foam insulation core material for the construction of energy-saving insulation board GOOT, according to the use of selected inorganic fireproof board, kraft paper, aluminum foil, aluminum foil, glass fiber mat, etc., as insulation board, the following layer material, the use of a continuous production line shape thus GOOT building a wide range of energy-saving insulation board, apply a variety of buildings around the structure with thermal insulation requirements. In short, the phenolic resin is a synthetic resin, the earliest human species, from its founder in 1905 U.S. scientists Dr.Leo Bzckeland, the phenolic resin into commercial production so far, nearly 100 years of history. Phenolic foam was first developed in 1940, Germany first used in aircraft. Now widely used, the advantages will continue to play.
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