Preparation of antistatic epoxy resin coatings based on double comb-like quaternary ammonium salt polymers |
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| Authors: | Wei Gao Zeng-chao Dang Fu-sheng Liu Sheng Wang Duan-wei Zhang Meng-xi Yan |
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| Affiliation: | Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037 P. R. China.; College of Chemical Engineering, Nanjing Tech University, Nanjing 210009 P. R. China, |
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| Abstract: | Two kinds of double comb-like quaternary ammonium salt polymers P(DPA-EPI) and P(DBA-EPI) with lower polarity were designed and synthesized using epichlorohydrin (EPI), di-n-propylamine (DPA) and di-n-butylamine (DBA) as raw materials. The transparent antistatic epoxy resin coatings were obtained using the two polymers as antistatic agents, respectively. Because P(DPA-EPI) and P(DBA-EPI) with good hygroscopic performance are easily dissolved in epoxy resin paints and are nearly linearly arranged in the epoxy resin paints, the obtained transparent antistatic epoxy resin coatings achieve good antistatic properties. The values of ρs of the coatings reach 5.13 × 108 Ω sq−1 and 2.69 × 108 Ω sq−1, respectively, with a lower addition amount of polymers of only 1.0 wt%. The two antistatic epoxy resin coatings also have good durability. Compared to the epoxy resin coating, with the introduction of P(DPA-EPI) and P(DBA-EPI), the thermal stability and adhesion of the antistatic epoxy resin coatings do not change obviously, but the Rockwell hardness values slightly reduce.The antistatic epoxy resin coatings using double comb-like quaternary ammonium salt polymers as antistatic agents reach good antistatic property with lower addition amount because polymers can dissolve and nearly linearly arrange in the coatings. |
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