Abstract
Semi-rigid foams were prepared by NR latex with 0, 2, 5, 10, 20 and 30 phr CaSiO3 added in a sulphur-curing system. The main composition of eggshell is made of 96.23%wt of CaCO3 and 3.77%wt of other oxide compounds. The CaSiO3 induced a spontaneous polarisation and reinforced the NR matrix due to ionic charge contents of Ca2+, Si4+ and O2− in its structure. Furthermore, the CaSiO3 was found to enhance the mechanical, thermal and physical properties of the composite foams. The suitable condition to prepare the semi-rigid composite foams was by adding 30 phr CaSiO3 in the NR latex with the sulphur-curing system. The obtained bulk density, the relative composite foam density, the compressive strength, the contact angle with water, and acetone at the water to acetone ratio of 1:1 were found to be 1.2230 g cm−3, 0.3611, 588.10 kPa, 103.3°, 26.5° and 85.3°, respectively.
Keywords
Get full access to this article
View all access options for this article.
