Influence of hydrophilic polymers based on polyvinyl alcohol and starch on physiсo-mechanical properties of thermal insulation materials

Keywords: rice husk, diatomite, basalt fiber, starch, polyvinyl alcohol, thermal insulation material, linear shrinkage, strength

Abstract

Thermal insulating materials based on diatomite with burnable and reinforcing additives modified with synthetic and natural polymers have been developed. A mixture of polyvinyl alcohol and starch was used as modifying polymers. The parameters of linear shrinkage, density, tensile strengths in compression and bending, as well as the coefficient of thermal conductivity of the material were determined depending on the concentration and ratio of polymers. It was established that polymer additives had a positive effect on almost all specified characteristics of thermal insulating materials. For example, when adding polymers up to 1 mass.%, the linear shrinkage coefficients decrease from 14.5 to 4.5%, the ultimate compression strengths increase from 0.22 to 2.51 MPa, the ultimate bending strengths increase from 0.2 to 1.26 MPa, the coefficients of thermal conductivity decrease from 0.068 to 0.049 W/m ∙ K. The densities of materials are in the range of 0.592-0.491 g/cm3. The results of the work showed that the obtained heat-insulating materials can be used as plasticizers in the field of thermal energy.

 

References

1 Aydarova S, Selyaev V, Nurlybaev R, Neverov V, Shamelkhanova N, Murzagulova A (2015) Bulletin of KazNTU [Vestnik KazNTU] 3:175.

2 Miryuk O (2005) Bulletin of NAS RK [Vectnik NAN PK] 5:53.

3 Gong L, Wang Y, Cheng X, Zhang R, Zhang H (2014) Int J Heat Mass Transf 68:295-298. Crossref

4 Wang L (2009) Desalin Water Treat 8:263-271. Crossref

5 Ma X, Liu J, Wu Z, Shi C (2017) Constr Build Mater 131:476-484. Crossref

6 Tayeh B, Abu Bakar B (2014) Mater Struct 46:743-753. Crossref

7 Tai Y, Pan H, Kung Y (2012) Nucl Eng Des 241:2416-2424. Crossref

8 Da J, Du Y, Li M, Zhang C (2014) Adv Mat Res 941-944:1562-1565. Crossref

9 Kim J, Robertson R, Naaman A (1990) Cement Concrete Res 29:407­415. Crossref

10 Muthukumar M, Mohan D (2005) J Polym Res 12:231-241. Crossref

11 Negim E, Rakhmetullayeva R, Yeligbayeva Zh, Urkimbaeva P (2014) International Journal of Sciences: Basic and Applied Research (IJSBAR) 3:263-273. Crossref

12 Dilmukhambetov E, Urkimbayeva P, Bakytzhanuly B, Erkin A, Mun G (2017) Influence of synthetic and natural polymers on the physical and mechanical properties and thermal conductivity of diatomite heat insulators. Abstract of 17th International Multidisciplinary Scientific GeoConference SGEM 2017, Bulgaria. P.600-608.

13 Wang D, Shi C, Wu Z, Xiao J., Huang Z, Fang Z (2015) Build Mater 96:368-377. Crossref

14 Hamdi B, Hamdi S (2013) International Congress on Energy Efficiency and Energy Related Materials (ENEFM2013) 155:27-32. Crossref

15 Aiticin R J, Flat D (2016) Science and technology of concrete Admixtures. Wood Head Publishing, London, UK. P.97-127. Crossref
Published
2020-03-25
How to Cite
Urkimbaeva, P., Bakytzhanuly, B., Dilmukhambetov, Y., Mamutova, A., & Kenessova, Z. (2020). Influence of hydrophilic polymers based on polyvinyl alcohol and starch on physiсo-mechanical properties of thermal insulation materials. Chemical Bulletin of Kazakh National University, (1), 32-38. https://doi.org/https://doi.org/10.15328/cb1094
Section
Organic and Polymers Chemistry