澳客彩票网官网

熱線電話
產品應用

低游離度TDI三聚體的合成

低游離度TDI三聚體的合成

jiabeneryiqingsuanzhi(tdi)zaicuihuazuoyongxiakeyifashengsanjufanying,xingchenghanyiqingniaosuanzhihuandesanjuti。tdisanjutijuyouhuifaxingdi、duxingxiao、guannengdugao、rewendingxinghao、naifushixinghaodengyoudian,changzuoweijuanzhiguhuajibeiguangfanyingyongzaituliao、zhanhejizhong。zai20shiji70niandai,guowaiduojiagongsikaishigongyehuashengchanyingyongzheleichanpin,rubayer、basf、dowdeng。muqiangaoxingneng、diyoulidantidetdisanjutirengranxuyaodaliangyilaijinkou。

benyanjiuyicuihuaji nt cat p100hecheng tdi sanjutijuanzhiguhuaji,shiyanjieguobiaoming: gaicuihuajijuyoucuihuasulvkuai、huoxinggao、fanyingwendudidengyoudian。zai40 ℃xia,yidijiafangshicuihuafanying,8 h jiukeyidadaofanyingzhongdian,dedaodiyoulidantihanliang tdi sanjuti。

原料及試劑

jiabeneryiqingsuandantitdi(80/20):gongyepin,basf;cusuandingzhi:fenxichun,guangzhoufanyuliqianghuagongchang;nt cat dmp-30:gongyepin,xindianhuaxue;nt cat k-15:gongyepin,xindianhuaxue;nt cat p100: xindianhuaxue;

合成工藝

zaidanqibaohudetiaojianxia,wangzhuangyoujiaoban、wendujiyijihuiliulengningguandeganzaosikouyuandishaopingzhongjiaru tdi( 80/20) danti 100 g,cusuandingzhi100 g。jiaoban5 ~10 min,jiareshengwenzhi40 ℃,dijia0. 5 gcuihuajidecusuandingzhirongye( cusuandingzhi10 ml) 。dijiawanbihou,kongzhiwenduzai40 ~80 ℃zhijian,baowenfanyingyue8 h,meige1 hcedingyicifanyingrongyede—ncozhi,dang—ncohanliangjiangdidao8.5% ~ 9% shi,jiaru1 gbenjiaxianlv,jixufanying0.5 h,tingzhijiarejiaoban,jiangwenchuliao,dedaoqianhuangsetoumingyeti。

zaishangshugongyijichushang,dijiayushedingliangdechun,baowenfanying30 ~60 min,dui tdi sanjutijinxinggaixingchuli。

催化劑種類、用量及滴加方式的影響

cuihuajidexuanzeshitdisanjufanyingdeguanjian。changyongdetdisanjucuihuajibaokuoshuan、youjijinshuhuahewu、youjilinhuahewu、jianjinshusuosuanyandeng。xuanyongdmp-30、k-15hep100dui50%cusuandingzhidetdirongyefenbiecuihuafanying,jieguorubiao1hetu2suoshi。

1 不同催化劑(0.5%添加量)對TDI三聚反應的影響

催化劑種類 K-15 DMP-30 P100
反應溫度/℃ 70 80 70 70
反應時間/h 24 26 6 5
w(—NCO)/% 24.2 12.3 10.4 6.8
產品外觀 無色透明 黃色透明 微黃透明 近水白透明

youbiao1hetu2kejian,bujiacuihuajideqingkuangxia,tdidesanjufanyingbufasheng;k-15cuihuasanjudexiaoguojiaocha,wendujiaogao、fanyingshijianchang,rongyichanshenggengduodeduojutijiegou;junweishuanleicuihuajidedmp-30hep100cuihuaxiaoguojiaohao,xiangbizhixiap100decuihuaxingnenggengqiang,duanshijianneijiunengxunsufanying,jiangdi—ncozhi,erqieshiyanhuanbiaomingzai40 ℃xiaqirengranjuyouhengaodecuihuahuoxing。yinci,xuanyongp100zuoweicuihuaji。tu3ship100cuihuajiyongliangfenbiezhantdidantizongzhiliangde2%、0.5%ji0.8%shiduitdisanjufanyingdeyingxiang。

2 3 種催化劑的催化效率對比

低游離度TDI三聚體的合成

diyoulidutdisanjutidehecheng

congtu3kandao,zaiqitatiaojianxiangtongdeqingkuangxia,suizhup100yongliangdezengjia,fanyingsulvjiakuai,tongshi—ncojituanhanliangyousuojianshao。cuihuajiyongliangtaishaoshi,jishiyanchangfanyingshijian,—ncohanliangrenggaoyu12%;ercuihuajiyongliangguogaoshi,daliangcanliudecuihuajizaiyidingchengdushangyingxianglechanpindexingneng。shiyanbiaoming,p100yongliangwei0.5%jiaoheshi。

3 催化劑用量對TDI三聚反應的影響

低游離度TDI三聚體的合成

diyoulidutdisanjutidehecheng

lingwai,cuihuajidedijiafangshiyehuiyingxiangsanjufanying。shiyanbiaoming,ruoyicixingjiarucuihuaji,dantimashangjuliefanying,daliangfangre,jubuwendukeshangsheng10 ℃,fanyingwuhuoxingdezengjiakenengdaozhichanwudexiangduifenzizhiliangzengjia、fenbubiankuan,shengchengdaliangdegaojuwu,shichanwudenianduzengjia、yansejiashen、chanpinxingnengxiajiang。ercaiyongcusuandingzhixishicuihuajihouzhudidijiadefangshi,nenghenhaodikongzhifanyingwendu。

結論

caiyongp100weicuihuajihechengtdisanjuti,shiyanbiaominggaicuihuajicuihuahuoxinggao、cuihuasulvkuai,cuihuaxiaoguojiao dmp-30 hek-15hao。

上一篇
下一篇