Development of wall insulation from rubber foam waste

Name: Thiti Pariburana

LCSH: Kasetsart University -- Theses. M.S. (Chemistry) 2021

Classification :.LCCS: TS1892

LCSH: Kasetsart University. -- Department of Chemistry -- Theses

LCSH: Rubber

LCSH: Foam rubber

LCSH: Walls

LCSH: Insulation (Heat)

LCSH: Insulating materials

Abstract: This research aims to use waste scrap rubber foams (WSRFs) to produce wall insulation materials with good microbial resistance and fire protection from NR in two different forms, i.e., rubber foam and rubber sheet. The influence of amount and size of WSRFs on the thermal conductivity of the NR products was undertaken. The maximum amount of WSRFs with the range of size at 2.00-4.74 mm was 60 phr. The wall rubber foam mixed with 60 phr of WSRFs had an unchanged coefficient of thermal conductivity when adjusting the size of WSRFs. However, the wall sheet mixed with WSRFs had a lower coefficient of thermal conductivity when increasing the amount of WSRFs, which the amount of WSRFs in the wall sheet couldn’t exceed 27% and the coefficient of thermal conductivity was the lowest when the size of WSRFs used was the mixed size. In terms of antimicrobial and flame retardant properties of this wall insulation, nano silver was added to prevent microbial activity and decabromodiphenyl ethane (DBDPE, Saytex 8010) was added with sodium tetraborate to prevent fire spread. The antimicrobial behavior of the wall insulations made of NR mixed with WSRFs prevented the development of microorganisms when nano silver was added to the material. The optimum amount of nano silver to mix into the wall rubber foam mixed with WSRFs was 5 phr because the addition of nano silver in excess causes the rubber foam to collapse. The wall sheet mixed with WSRFs couldn't include nano silver more than 8 phr because it resulted in a higher coefficient of thermal conductivity when the amount of nano silver was increased. The flame retardant effect of the wall rubber mixed with WSRFs was the best prevented when WSRFs were soaked in sodium tetraborate solution before being mixed into the wall sheet containing DBDPE at 50 phr, giving the flame rate of 0.3369 g/min. The addition of these two flame retardants in the wall sheet provided good protection against flame retardant, but it was still a highly flammable material because the material ignited before 30 seconds in the flammability test.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Wirunya Keawwattana

Role: Thesis Advisor

Created: 2021

Modified: 2025-07-17

Issued: 2025-07-17

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2564/thiti-par-all.pdf

CallNumber: TS1892 .T45

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Chemistry

Grantor: Kasetsart University

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