CAJ | 학술논문

利用差示扫描量热法(DSC)研究了气氛、升温速率、试样量和载气流速对苯乙烯-马来酸酐共聚物(SMA)玻璃化转变温度的影响.并用优化后的条件考察了上海石油化工研究院自制SMA样品的玻璃化转变温度.实验结果表明,在试样量10mg左右、氮气流速40 mL/min、升温速率20℃/min的优化条件下,测定结果良好.经验证,DSC与动态机械热分析(DMTA)所测得的Tg基本一致,表明优化后的条件很适合SMA玻璃化转变温度的测定,此结果有助于SMA的生产和应用.
이용차시소묘량열법(DSC)연구료기분、승온속솔、시양량화재기류속대분을희-마래산항공취물(SMA)파리화전변온도적영향.병용우화후적조건고찰료상해석유화공연구원자제SMA양품적파리화전변온도.실험결과표명,재시양량10mg좌우、담기류속40 mL/min、승온속솔20℃/min적우화조건하,측정결과량호.경험증,DSC여동태궤계열분석(DMTA)소측득적Tg기본일치,표명우화후적조건흔괄합SMA파리화전변온도적측정,차결과유조우SMA적생산화응용.
Styrene-maleic anhydride (SMA) copolymer is a commercially heat resistant materials and compatibilizer bearing reactive anhydride groups.The effects of atmosphere,heating rate,sample mass and flow rate of carrier gas on glass transition temperature of SMA were also investigated by differential scanning calorimetry (DSC) N2 is preferred as the carrier gas.Moderate carrier gas flow rate,heating rate and sample mass help to obtain relatively accurate results.The results indicate that Ts of SMA was measured preferably with the sample mass of about 10 mg,N2 flow rate of 40 mL/min and heating rate of 20 ℃/min,which is proved appropriate by dynamic mechanical thermal analysis.