PDF
摘要
传统的酚醛树脂涂料因其脆性较大,涂层易开裂,在许多工程中不会单独使用。以腰果酚代替苯酚、糠醛代替甲醛为原料,在酚醛摩尔比小于1,碱性催化剂作用下制备了热固性酚醛树脂涂料。讨论了反应温度和反应时间对涂膜性能的影响。采用红外光谱对腰果酚糠醛树脂的结构进行了表征;采用热重法对涂膜的热稳定性进行了分析;按照国家标准对其基本涂膜性能,机械性能和防腐性能进行了测试。结果表明:制备腰果酚糠醛树脂防腐涂料的最佳工艺条件为温度为90℃,反应时间90～120min,在此条件下制得的防腐涂料涂膜性能最佳。
Abstract
Conventional phenolic resin coatings were susceptible to cracking due to their high brittleness,and are not used alone in many projects.Thermosetting phenolic resin coating was prepared by using cashew phenol instead of phenol,and furfural instead of formaldehyde as raw materials under the action of alkaline catalyst with phenolic molar ratio less than 1.The effects of reaction temperature and reaction time on film properties were discussed.The structure of the resin was characterized by infrared spectroscopy.The thermal stability of the coating film was analyzed by thermogravimetry.The basic film properties,mechanical properties and corrosion resistance were checked according to national standards.The results shown that the optimum conditions for the preparation of the resin were 90℃ and the reaction time was 90～120min.The coating prepared under these conditions had the best coating performance.
关键词
酚醛树脂
/
防腐性能
/
热稳定性
/
腰果酚
/
糠醛
Key words
phenolic resin
/
corrosion resistance
/
thermal stability
/
cardanol
/
furfural
腰果酚糠醛树脂防腐涂料的制备及性能研究[J].
化工新型材料, 2021, 49(1): 117-120 DOI:10.19817/j.cnki.issn 1006-3536.2021.01.026
[1] Martin R.The chemistry of phenolic resins[M].New York:Wiley,1956.
[2] Knop A,Scheib W.Chemistry and application of phenolic resins[M].Berlin:Springer,1979.
[3] 胡应模,郭明高.呲啶催化2,4-甲苯二异佩酸醋和腰果酚甲醛树脂共聚及交联[J].林产化学与工业,1989,9(3):43-51.
[4] 赵峰.腰果树脂漆的制备[J].探索与研究,2004,42(6):4-7.
[5] 广州腰果壳液涂料研制协作组,广州市五金交电化工公司.腰果酚醛树脂及漆的制备[J].涂料与工业,1978(2):10-16.
[6] Srivastava R,Srivastava D.Studies on the synthesis and curing of thermoset-ting novolac resin using renewable resource material[J].International Journal of ChemTech Research,2013,5(5):2575-2581.
[7] Srivastava R,Srivastava D.Mechanical,chemical,and curing characteristics of cardanol-furfural-based novolac resin for application in green coatings[J].Journal of Coating Technology and Research,2015,12(2):303-311.
[8] 王俊,李环宇,李翠勤,等.腰果酚基改性树脂在涂料领域的应用研究进展[J].化学工程师,2016(1):41-45.
[9] Oliveira Franciéli B,Gardrat C,Enjalbal C,et al.Phenol-furfural resins to elaborate composites reinforced with sisal fibers-molecular analysis of resin and properties of composites[J].Journal of Applied Polymer Science,2008,108:2291-2303.
[10] Lubi M C,Thachil E T.Cashew nut shell liquid (CNSL)-a versatile monomer for polymer synthesis[J].Designed Monomers and Polymers,2000,3(2):123-153.
[11] 陈鸯飞,陈智琴,肖绍懿,等.酚醛树脂热降解过程中的结构变化[J].热固性树脂,2008,23(4):4-8.
基金资助
辽宁省自然科学基金项目(20180550432)
