Nanoparticles increase thermal resistance of polymers
Iranian researchers from Kashan University employed nanotechnology to increase thermal and flame resistant of polymers. Results of the research have applications in car manufacturing industries, home appliances, and aerospace industries. Among other advantages of the research, mention can be made of the reduction in environmental pollution due to the use of nanoparticles.
ABS copolymer is known as very commonly used polymer in various industries due to its cheap price and very well mechanical properties. Ease of reactivity and high chemical resistance are among the most important characteristics of this copolymer. However, relatively low thermal resistance and flammability are considered as the most important problems of this copolymer for industrial applications. Application of nanoparticles and their appropriate distribution in the matrix of the organic polymer to obtain desirable thermal resistance are among the objectives of the researchers in this study.
Copper sulfide nanoparticles, whose surface was modified with the organophilic compound of thioglycolic acid, have been used in the polymeric bed in this research. These nanoparticles protect the polymer against heat, flame and oxygen infiltration like a block. They also reduce the rate of degradation and vaporization of the polymer against heat. In addition, the replacement of copper sulfide nanoparticles with organic halogenized components results in the reduction in environmental pollution.
According to the researchers, the unique distribution of nanoparticles in the polymeric bed with a flower-like structure is among the specific characteristics of this research. Even if polymers synthesized through this method do not resist against flame, they definitely decrease the rate of its extension and they provide more time for rescuing people and putting off the fire.
Results of the research have been published in Journal of Industrial and Engineering Chemistry, vol. 20, issue 5, 2014, pp. 3709-3713.
Source: Iran Nanotechnology Initiative Council
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