The Construction And Performance Of Interior And Exterior Wall Thermal Insulation Systems

Building energy conservation has an important meaning of energy conservation in our country. Currently, the most important measure to achieve building energy conservation is wall thermal insulation. In this paper, the aluminium-magnesium silicate(MS) and bentonite(ST) was modified by cetyl trimethyl ammonium bromide(CTMAB) and the modification technology was optimized by spectrophotometry, then the structure of modified ST(MS) was confirmed by XRD, FT-IR, DSC, BET and Zeta potential. The results showed that the 2θ, surface area and pore volumes of the modified ST(MS) were reduced; meanwhile the apparent pore size and Zeta potential were increased. The modification agent might in several ways penetrate into interlayer of the ST(MS) and is adsorbed on its surface, resulted in the interlayer increased and the surface microporous closed.The modified MS was compounded with hydrophobic Si O2 aerogel and rock wool to prepare interior single-component wall insulation putty. The properties of the putty were evaluated by insulation temperature difference and coefficient of thermal conductivity, then the properties of the putty affected by hydroxypropyl methylcellulose(HPMC) was studied. The results showed that anti-shrinkage and thermal insulation performances of the putty were improved by adding modified MS. The insulation performance of the putty got further improvement by adding modified MS, hydrophobic Si O2 aerogel and rock wool. The content of modified MS, hydrophobic Si O2 aerogel and rock wool is 16%, 8%and 16%. For interior single-component wall insulation putty, temperature difference of the putty was increased by 10.5℃ compared with the original sample, the coefficient of thermal conductivity was 0.030 W/(m·K) and the dry unit weight was 676kg/m3.On the basis of interior single-component wall insulation putty, the modified MS was compounded with hydrophobic Si O2 aerogel and rock wool to prepare interior bi-component wall insulation putty. The properties of the putty were evaluated by insulation temperature difference and coefficient of thermal conductivity, then the properties of the putty affected by synthetic resin emulsion was studied. The results showed that the content of modified MS, hydrophobic Si O2 aerogel and rock wool is 21%, 10%and 21%. For interior bi-component wall insulation putty, the content of the emulsion-998 is 13%, the thermal conductivity and dry unit weight had no obvious change.The modified MS was compounded with hydrophobic Si O2 aerogel and rock wool to prepare exterior single-component wall insulation material. The properties of the material were evaluated by insulation temperature difference and coefficient of thermal conductivity, then the properties of the material affected by redispersible powder was studied. The results showed that anti-shrinkage and thermal insulation performances of the material were improved by adding modified MS. The insulation performance of the material got further improvement by adding modified MS, hydrophobic Si O2 aerogel and rock wool. The content of modified MS, hydrophobic Si O2 aerogel and rock wool is 16%, 8%and 16%. For exterior single-component wall insulation material, temperature difference of the material was increased by 7.8℃ compared with the original sample, the coefficient of thermal conductivity was 0.032 W/(m·K) and the dry unit weight was 729kg/m3.On the basis of exterior single-component wall insulation material, the modified MS was compounded with hydrophobic Si O2 aerogel and rock wool to prepare exterior bi-component wall insulation material. The properties of the material were evaluated by insulation temperature difference and coefficient of thermal conductivity, then the properties of the material affected by synthetic resin emulsion was studied. The results showed that the content of modified MS, hydrophobic Si O2 aerogel and rock wool is 18%, 9%and 18%. For exterior bi-component wall insulation material, the content of the emulsion-998 is 13%, the thermal conductivity and dry unit weight had no obvious change.