CAJ | 학술논문

采用共混法与原位聚合法制备添加纳米二氧化硅恐龙化石保护材料．将制备恐龙化石保护材料与传统保护材料（硝基清漆）分别涂覆钢片，用3．5％氯化钠溶液浸泡腐蚀，测试腐蚀电位、腐蚀电流、交流阻抗和腐蚀速度；利用SPM和DSC测试保护材料分散性与热分解性．结果表明：共混法与原位聚合法制备保护材料腐蚀电流分别为3．481×10-7 A/cm2、2．332×10-6 A/cm2，硝基清漆腐蚀电流为4．181×10-6 A/cm2，共混法制备保护材料腐蚀速度最小；三种保护材料失重腐蚀速率为1．18 g/（ m2·h）、1．19 g/（ m2·h）和1．29 g/（ m2· h），共混法制备保护材料耐蚀性最好，交流阻抗谱测试结果与其一致；添加4％纳米SiO2制备水溶性保护材料时，共混法制备材料耐热性、分散性较原位聚合法好，两者涂膜附着力皆为1级．
채용공혼법여원위취합법제비첨가납미이양화규공룡화석보호재료．장제비공룡화석보호재료여전통보호재료（초기청칠）분별도복강편，용3．5％록화납용액침포부식，측시부식전위、부식전류、교류조항화부식속도；이용SPM화DSC측시보호재료분산성여열분해성．결과표명：공혼법여원위취합법제비보호재료부식전류분별위3．481×10-7 A/cm2、2．332×10-6 A/cm2，초기청칠부식전류위4．181×10-6 A/cm2，공혼법제비보호재료부식속도최소；삼충보호재료실중부식속솔위1．18 g/（ m2·h）、1．19 g/（ m2·h）화1．29 g/（ m2· h），공혼법제비보호재료내식성최호，교류조항보측시결과여기일치；첨가4％납미SiO2제비수용성보호재료시，공혼법제비재료내열성、분산성교원위취합법호，량자도막부착력개위1급．
The protective materials with nano silicon dioxide additives for dinosaur fossils were prepared by blend-ing and in-situ aggregation methods. Two protective materials were coated on steel discs, respectively. Then the discs were soaked and corroded in 3. 5% sodium chloride solution. Next, the corrosion potential and current, alternating current impedance and weightless corrosion rate were measured. The dispersibility and thermal degradation of the pro-tective materials were measured by SPM and DSC. The results showed that the corrosion current of the protective mate-rials prepared by blending and in situ aggregation method was 3. 481 × 10 -7 A/cm2 and 2. 332 × 10 -6 A/cm2 ,respec-tively. The corrosion current of nitrocellulose varnish was 4. 181 × 10 -6 A/cm2 . The corrosion rate of the protective materials prepared by blending method was one tenth of that of nitrocellulose varnish. The weightless corrosion rates of the three kinds of protective materials were 1. 18 g/(m2·h), 1. 19 g/(m2·h) and 1. 29 g/(m2·h), respectively. The corrosion resistance of the protective materials prepared by blending method was the best, which was surpported by the test results of alternating current impedance. When processing water soluble protective materials with 4% nano SiO2 , the heat resistance and dispersibility of the materials prepared by blending method were better than those of the materials prepared by in situ aggregation method. The coating adhesion of both kinds of materials is the first grade.