Dimethyl Siloxane Case Study

[Qin Yi, Fan Hui Li et.al, 2012] using Dimethyl terephthalate instead of part of phthalic anhydride prepared Polyester resin with the excellent flexibility. He then used sol-gel technology to prepare silicone-modified polyester resin. The properties of the coting film, such as hardness, flexibility, solvent resistance and adhesion were studied and optimized. When compared with commercially available coloured polyester coating SM 3911, the flexibility, adhesion, rigidity , MEK resistance and acid-resistance of the prepared coating were found to be excellent. Bekemeier Thomas et.al, 2013 also studied effect of silicone and polyester compositions for development of heat and weather resistance coating. Silicones in the range from thirty to fifty …show more content…
Thus its now more than 75 years silicone has been invented. Over these years Silicon has been tried and blended with various types of organic polymers. [Rachow E.G., 1987]. The few applications of silicones and its intermediate along with Siloxane-organic copolymer blends have been explained in this chapter. However Silicones intermediate or Silaxone-organic copolymers also have limitations in terms of chemical and corrosion resistance. From the literature survey it can be seen that there is a need to develop a coating which can withstand degree of chemical resistance higher than those combinations tried before and to maintain or increase corrosion resistance of the new coating along with good mechanical resistance and constant service temperature of more than …show more content…
Mowrer, N. R. (2003) has mentioned that Solvent-borne thermoplastic acrylic resins tend to have better chemical resistance than alkyds and can be cold blended with silicone resins to give weather-resistant paints for exterior applications. Addition of as little as 10% silicone can significantly increase the gloss retention and chalking resistance. The improvement that can be achieved in gloss retention of various organic coating resins through silicone modification. Another research involves the use of incompatible polymer blends of epoxy & thermoplastic resin to produce improved coatings where heterogeneity of system can be predicted using phase diagram analysis. [Verkholantsev V., 1997]

Recently Andrew Hilmer (2011) carried out work related to “Silicone-thermoplastic polymer reactive blends. In this research he used thermoplastic polyolefin polymer which was copolymerized with silane group using catalyst.[ Cogen Jeffrey M., 2011]. Thus Silicon-thermoplastic polymer blend has been tried with poly ether ketone (PEK); a high performance thermoplastic polymer with the aim to develop high performance coating which can meet requirement of high degree of chemical resistance, corrosion resistance, heat resistant, added with improved mechanical resistance

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