Aerogel Composite Foamed Polyurethane
Introduction：
Theaerogelcompositefoamedpolyurethane materialisformedbyaddingathermal insulatingmaterialsilicaaerogelporefiller andaphosphorusheat-resistantmodifierto aconventionalrigidpolyurethanefoam (RPUF).Throughthepore-fillingweightgain
andcoatingmodificationofsilicaaerogel, notonlytheaerogelisuniformlydispersedinthebulkoftheRPUFmaterial,butalsothenanopore effectoftheaerogelisalwayspresent,andtheaerogelisfullyutilized.Theinfinitelongpatheffect,infinitebaffleeffect,andzeroconvectioneffectmakethemodifiedpolyurethanestillhaveexcellent thermalconductivitywhileimprovingheatandflameretardancy.
Parameter：
| Technological Specification | Standard Grade |
| Heat resistant temperature | 150°C |
| Oxygen Index | 29 |
| Thermal conductivity index | 0.027 |
| Compression performance (deformation10%) | 200kPa min |
| Impervious to water 0.2MPa,30min | impermeable |
| Dimensional stability (70°C,48H) | 1.5%max |
| Closed cell ratio | 90%min |
| Water absorption rate | 3%max |
Advantage：
1. Good thermal insulation performance: The thermal conductivity is about 0.027, which is a good material for building insulation.
2. Good waterproof performance: The foamed cells are closed and the sealing rate is 95%. Rainwater can not seep through the holes.
3. Good bonding performance: It can bond with wood, metal, masonry, glass and other materials very firmly.
4. Anti-aging Good: According to foreign engineering studies and research, the ageing resistance can reach 30 years.
5. Anti-corrosion: Chemical properties are relatively stable.
Application：
Aerogel composite foamed polyurethane can be applied to direct buried insulation pipe.Directly buried insulation pipe, also known as "pipe-in-tube", is composed of high-density polyethylene outer protective layer, polyurethane rigid foam plastic insulation material and steel pipe.
It has good mechanical properties and thermal insulation properties, and is usually resistant to high temperatures 120 oC, The aerogel composite foamed polyurethane material can increase its withstand temperature (up to 150 oC), reduce the thermal conductivity of the material, and effectively improve the temperature resistance, thermal insulation effect and mechanical properties of the modified RPUF material.
