合成树脂及塑料
閤成樹脂及塑料
합성수지급소료
CHINA SYNTHETIC RESIN AND PLASTICS
2013年
4期
29-32,35
,共5页
脲醛%微胶囊%相变材料%原位聚合%性能
脲醛%微膠囊%相變材料%原位聚閤%性能
뇨철%미효낭%상변재료%원위취합%성능
urea-formaldehyde%microcapsule%phase-change materials%in-situ polymerization%performance
?以低熔点石蜡为相变材料，以苯乙烯-马来酸酐共聚物/辛烷基酚聚氧乙烯醚为复合乳化剂，以甲醛和尿素为反应单体，采用两步法原位聚合制备了脲醛树脂（UF）/低熔点石蜡微胶囊。研究了反应单体甲醛和尿素的摩尔比对UF的结构，微胶囊的热行为、外观形貌、粒径大小及分布的影响。结果表明：当甲醛与尿素的摩尔比为1.8∶1.0?时，合成的UF树脂具有交联结构，微胶囊具有较小的粒径、较光滑的圆球状外观形貌和较高的蓄热能力。
?以低鎔點石蠟為相變材料，以苯乙烯-馬來痠酐共聚物/辛烷基酚聚氧乙烯醚為複閤乳化劑，以甲醛和尿素為反應單體，採用兩步法原位聚閤製備瞭脲醛樹脂（UF）/低鎔點石蠟微膠囊。研究瞭反應單體甲醛和尿素的摩爾比對UF的結構，微膠囊的熱行為、外觀形貌、粒徑大小及分佈的影響。結果錶明：噹甲醛與尿素的摩爾比為1.8∶1.0?時，閤成的UF樹脂具有交聯結構，微膠囊具有較小的粒徑、較光滑的圓毬狀外觀形貌和較高的蓄熱能力。
?이저용점석사위상변재료，이분을희-마래산항공취물/신완기분취양을희미위복합유화제，이갑철화뇨소위반응단체，채용량보법원위취합제비료뇨철수지（UF）/저용점석사미효낭。연구료반응단체갑철화뇨소적마이비대UF적결구，미효낭적열행위、외관형모、립경대소급분포적영향。결과표명：당갑철여뇨소적마이비위1.8∶1.0?시，합성적UF수지구유교련결구，미효낭구유교소적립경、교광활적원구상외관형모화교고적축열능력。
Urea-formaldehyde?(UF)/low?melting?point?paraffin?microcapsules?were?prepared?by?two?step?in-situ?polymerization?with?low?melting?point?paraffin?as?phase-change?material,?styrene-maleic?anhydride?co-polymer/poly(octylphenolic?oxyethylene?ether)?as?composite?emulsifier,?formaldehyde?and?urea?as?monomer.?The?effect?of?the?molar?ratio?of?monomer?formaldehyde?to?urea?on?the?structure?of?UF,?the?thermal?behavior,?mor-phology,?particle?size?and?its?distribution?of?the?microcapsules?were?studied.?The?results?show?that?the?UF?resin?synthesized?exhibits?cross-linking?structure,?and?the?microcapsules?have?smaller?particle?size,?smoother?spherical?appearance?and?higher?heat?storage?capacity?when?the?molar?ratio?of?formaldehyde?to?urea?is?1.8∶1.0.
