悠洋棋牌

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二甲基乙醇胺应用于双组份聚氨酯水性涂料

1、引言

QIJIN,PEIZHISHUANGZUFENJUANZHISHUIXINGTULIAOYICHENGWEIKENENG。TEBIESHIMUQIANKAIFADEHANQIANGJIDESHUIXISHIXINGSHUZHI(YIRUYE、FENSANTIHERONGYEDEXINGSHI)KEYIYUDIZHANDUHUOSHUIRUHUADEDUOYIQINGSUANZHIPEIQI。 QIDEDAODEXINGNENGYUCHANGGUIRONGJIXINGSHUANGZUFENJUANZHISHIFENLEISI。YIQIANZAISHUANGZUFENJUANZHITIXIZHONG,SHUITONGCHANGSHIBUKENENGLAIDAITIYOUJIRONGJIDE,YINWEIDUOYIQINGSUANZHIKEYUSHUIFANYINGSHENGCHENGJUNIAOHEERYANGHUATAN。GAIFANYINGHUIDAOZHITUMOQIPAO、SUOKONGHESHIGUANG,TONGSHIYEJIANGDILEQITAXINGNENG。GUMINGSIYI,LIANGZUFENJUANZHITULIAOTIXIBAOHANLIANGGEZUFEN:YIGEWEIDUOYUANCHUNZUFEN,LINGYIGEWEIYIQINGSUANZHIZUFEN。BIXUZENYANGGAIXINGZHEIXIEZUFENYISHIHESHUIXINGTIXI?ZHEIXIEZUFENYIJIDUITAMENYONGYUSHUIXINGTIXIZHONGDEYAOQIUTINGZAIXIAWENZHONGJIESHAO

2、双组份聚氨酯体系的组成

2.1 羟基组份

QIANGJIZUFEN(DUOYUANCHUN)YOUSANZHONGBUTONGXINGSHISANJUHEWURONGYE、JUHEWURUYEHEJUHEWUFENSANTI。( RUYEHEFENSANTIZHIJIANDECHABIEZAIYUJUHEWUXINGTAIDEBUTONG,YETAIWEIRUYE,ERGUTAIWEIFENSANTI)。BENWENJIANGJIZHONGLUNSHUZUOWEIQIANGJIZUFENYIBINGXISUANDANTIWEIJICHUDEGAOFENZILIANGJUHEWU(SHUZHIRONGYEHEDIFENZILIANGDERUYEBUJIAMIAOSHU。ZHEIXIEQIANGJIJUHEWUBURONGYUSHUI,DANSHIKEYIFENSANZAISHUIZHONG。FENSANKELIDEWENDINGZUOYONGSHITONGGUOJIARUBIAOMIANHUOXINGJIHE/HUOZAIJUHEWUZHONGGONGJUSHANGHUIYOUSUANJI(SUOSUANJI)DEDANTILAISHIXIANDE。

CONGJINGJI、JISHUJIAODUKAOLV,WENDINGJUHEWUKELIDEZUIHELITUJINGSHICAIYONGFEILIZIHEYINLIZIHUNHERUHUAJI。LINGWAIJIYUQITAYUANYIN:JUHEWUTONGCHANGDAIYOUSUOJIYIJINYIBUTIGAOWENDINGXING。

BENWENLUNJIDESUOJIJUHEWUFENSANTIZHIYONGBIAOMIANHUOXINGJILAIDADAOWENDINGXIAOGUO,BUHANYOUSUOJI。RUGUOJUYUWUBIXUYOUANLEI、ZHONGHEYIHUODESHUIRONGXINGHUOSHUIRUHUAJI,ZESUOJISHIBIBUKESHAODE。ZHEIZAISHUIRONGXINGSHUZHIHUOERCIFENSANTIZHIBEIZHONGHUICHUXIAN。

YIDANDUOYIQINGSUANZHIZUFENBEIJIARUDAOBUHANSUOSUANJITUANDEJUHEWUZHONGSHIQIYOUDIANSHIDUOYIQINGSUANZHIZUFENHENKUAIYUFENSANJIJISHUIFANYING,ERBUNENGJIKEYUQIANGJIZUFENFANYING,ZHEISHIYINWEIFENSANKELIDEBIAOMIANDABUFENBEIZUOWEIWENDINGJIDERUHUAJISUOFUGAI。FUGAICENGXIANZHILEOHHENCO-JITUANDEZHIJIEPENGZHUANG。ERSUANJIDECUNZAIZEGANRAOLEGAIFUGAICENGDEZUOYONG,DANGOH-JIYUNCO-JIYAOFANYINGSHISUANJIQUEXIAOHAOLEOH-JI。

OH-JIZUFENHENCO-ZUFENZHISHIZAITUMOXINGCHENGGUOCHENGZHONGHUOXINGCHENGHOUCAIFANYING。ZUOWEISUOYOUJISHUSHANGSHIYONGFENSANTI,ZHEIXIEOH-JIFENSANTIJINGUANQIJIAOGAOGUTIFENDANJUNJUYOUXIANGDUIJIAODIDEZHANDU。PHZHIBUHUIYINGXIANGZHANDU,YINWEITAMENBUHANSUOSUANJITUAN。TONGYANGBENWENLUNJIDEJUYOUOH-JIDEJUHEWUFENSANTIDEFENZILIANG,QIZHIDAYUEZAI1BAIWANHUOGENGGAO,YEBUHUIYINGXIANGZHANDUDEGAIBIAN。

SHANGSHULIZIZHONGSHIYONGDELIANGGEJUYOUOH-JIDEFENSANTIDETEZHENGZHIRUXIA:

固体分(%)       约45
PH                Ca2
粘度(mPas)     ca25
最低成膜温度
分散体1(℃)        ca35
悠洋棋牌 分散体2(℃)         ca60

2.2多异氰酸酯组分

悠洋棋牌ZHIFANGZUDUOYIQINGSUANZHIYOUSANZHONGLEIXING:ANJIJIASUANZHILEI,SUOERNIAOLEI,HEYIQINGNIAOSUANZHILEI。

HANYOUDUOYIQINGNIAOSUANKUNHEDUOYUANCHUNDEFANYINGCHANWUYOUQISHIYONGYUSHUIXINGSHUANGZUFENJUANZHITIXI。GAIFANYINGYONGZENGJIALEYIQINGNIAOSUANZHIDEQINSHUITEZHENG。ZAISHUIZHONG,GAIXINGYIQINGSUANZHIDERUHUANENGLISHIYOUJUEDINGYIYIDE。KESHIYONGJIANDANDEJIAOBANZHUANGZHIYONGYURUHUAZUOYONG。GAIXINGQINSHUIXINGDUOYIQINGNIAOSUANZHIDETEZHENGZHIRUXIA:

NCO-含量(%)                 17-18
粘度(mPas)           2000~6000
异氰酸酯残单量(%)           <>
水乳化作用             近于自发乳化

悠洋棋牌ZAISHUIXINGDEDAIYOUQIANGJITUANDEJUHEWUFENSANTIZHONGCHANRUCHANGYONGDEFEIQINSHUIDEDUOYIQINGSUANZHISHIHUIYINQIJIAODADEBIAN。LINGYIGEBUZUSHIBIXUSHIYONGDIFENZIJILIAOZUOWEIOH-JIZUFEN。GAIJILIAOZISHENBIXUYOUCHONGFENDERUHUANENGLIYIBIANRUHUAZENGSHUIDEDUOYIQINGSUANZHI,SHIZHICHONGFENXIFENSANYUSHUIXIANGZHONG。DUOYIQINGSUANZHIDEGAOZHANDUSHIZHEIYIGUOCHENGBIANDESHIFENKUNNAN。

DIAOZHENGCHENGDIZHANDUDE、YIZHIDEDUOYIQINGSUANZHIGAIXINGWUSHIYUSHENZHIGENGHAODESHIYONGZUODIFENZILIANGJILIAOLIRU。GAIDIZHANDUDUOYIQINGSUANZHIDETEZHENGZHIRUXIA:

NCO-含量 (%)           19~22
粘度 (mPas)          500~900
异氰酸酯残单量 (%)        <>
水乳化作用 只用于水性或水乳化树脂

3、亲水改性的多异氰酸酯在水中的稳定性和乳化能力

悠洋棋牌YOUYUNCO-JITUANZAISHUIZHONGBUWENDING,YINCIQIYUSHUIFANYINGDESUDUJIUXIANDESHIFENZHONGYAO。YUSHUIDEFANYINGYUEMAN,TIXIDECAOZUOSHIJIANYUEZHANG。QINSHUIDEGAIXINGDUOYIQINGSUANZHIDENCO-JITUANZAISHUIZHONGDEFENJIE、ZAISUANXINGZHIRUOJIANXINGDEPHZHIFANWEINEISHIHUANHEDE(JIANTU1)。

悠洋棋牌6~8XIAOSHIDESHIYONGSHOUMINGSHIRONGYIHUODEDE。ZAIPHZHIWEI8SHI,YUSHUIFANYINGDENCO-JITUANZAI6XIAOSHIHOUHUIXIAOHAODIAOYUEZONGLIANGDE25%。SHIGONGCESHIQUEXINZAISHIJICAOZUOZHONGQISHIYONGQISHILINGRENMANYIDE。

未经稀释的异氰酸酯虽然具有好的自乳化性能,但其粘度亦相当高(约4Pas)。所以它应该用合适的溶剂稀释到80%左右的固体分。
悠洋棋牌 溶剂可能会影响乳化行为。实际上,在碳酸异丙烯酯中的80%的异氰酸酯溶液就可以自乳化。在水中或含OH-基聚合物分散体中用于搅拌。该乳液的粒径大小约为120 μm(0.12μm)。

RUGUOYONGQITARONGJI(RUJIAYANGJIBINGXIYISUANZHIHUOERBINGXIJIYIERCHUNERJIAJIMI)LAIXISHISHANGSHUGAIXINGYIQINGSUANZHISHI,ZEXUJIAOKUAIDEJIAOBAN(GAOSUFENSANJI)CAINENGHUODERUHUAZUOYONG。

4、涂膜形成和用于涂膜形成的合适助剂

RONGYIKANCHUSHUANGZUFENJUANZHITIXIZHONGDEOH-JIJUHEWUFENSANTIDEZUIDICHENGMOWENDUYOUYUGAITIXIDESHIGONGYAOQIUTONGCHANGSHIZAISHIWENXINSHANG。SUOYIBIXUJIARUSHILIANGDECHENGMOZHUJIYIQUEBAOQIZAISHIWENXIAWANQUANCHENGMO。CHENGMOZHUJI,RUTexanol、Hexyl DiglycolHESolvenon DPMDENG,DANGQITIANJIALIANGWEI6~9% SHI,KESHIZUIDICHENGMOWENDU(MFFT)JIANDIDAO0℃。

JIUYUANLIERLUN,PUTONGCHENGMOZHUJIRUDINGJIYIERCHUNHUODINGJIERYIERCHUNDENGKEYONGYUHANYOUQIANGJIDEFENSANTI。DANSHI,TAMENHANYOUOH-JITUAN,ZAITUMOXINGCHENGQIANHOUNENGYUGUHUAJIFANYING。DANGQINGQIZAIRUOJIANXINGPH ZHIFANWEIYINGYONGSHI,ZEYINGYONGYOUXIANXUANZEDINGJIYIERCHUNYISUANZHIHEDINGJIERYIERCHUNYISUANZHI。RANER,SHOUPH ZHIYINGXIANG,YISUANZHILEIHUODUOHUOSHAOHENKUAIJIUHUIYINQIZAOHUA。LINGWAI,DUIZHUCUNSHIJIANHEWENDUYOUBULIYINGXIANG。ZAOHUACHANSHENGDINGJIYIERCHUNHUODINGJIERYIERCHUNHANYOUZIYOUDEOH-JITUAN,LINGYICHANWUYISUANKEJIANGDIPH ZHIZHIZHONGXINGCHENGSUANXINGFANWEI。

DANGZHIBEIDEQINGQICHUYUSUANXINGPHZHIFANWEISHI,MUCAICHENGSULIAOTUZHUANGKESHIYONGDINGJIYIERSUANZUOWEICHENGMOZHUJI,QINSHUIDEGAIXINGYIQINGSUANZHIZUFENDENCO-JITUANZAISUANXINGPHZHIFANWEI、YONGDINGJIYIERCHUNZUOWEIRONGJISHIBIJIAOWENDINGDE:ZAIPH=6SHI,5XIAOSHIZHIYOU20%DENCO-JIBEIFANYINGDIAO、ERPHSHANGSHENGZHI8XIAOSHI,5XIAOSHIHOU NCO-JIZEBEIHUIBUXIAOHAODIAO。

悠洋棋牌YIQINGSUANZHIZUFENDEJIARUJIANGYINGXIANGZHENGGETIXIDETUMOXINGCHENGWENDU。RUGUOYIQINGSUANZHIZUFENBEIRONGJIEHOUSHIYONG,ZERONGJIYEHUIYINGXIANGCHENGMOWENDU。DANGNCO-ZUFENYUOH-ZUFEN(MFFTWEI60℃)HUNHEHOU,QIMFF TJIANGWEI50℃(HUNHEBIWEI9:1 OH/NCO-ZUFENGUTILIANG)HUO40℃(HUNHEBIWEI8:2 OH/NCO)。DANGSHIYONGRONGYUTANSUANZHIYIBINGXI(GUTIFENWEI80%)DENCO-ZUFENSHI,MFFTKEJIANGZHI40℃(9:1 OH/NCO)HUO18 ℃(8:2 OH/NCO)。

5、交联机理

当OH-基聚合物分散体与乳化的异氰酸酯混合后,异氰酸酯基团会与水反应,产生胺。在涂膜形成后,这部分胺会进一步与异氰酸酯反应生成聚脲。总之,到最后只有一部分异氰酸酯与聚合物的OH-基反应生成聚氨酯,而这个反应是在双组份聚氨酯体系中最想得到的。
悠洋棋牌 分析试验显示,当涂膜在室温交联的时候,生成约30%的聚脲和70%的聚氨酯。但是这样的聚氨酯交联比例已足够使涂膜得到好的机械性能和化学稳定性,由于OH-基聚合物分散体含有高分量的聚合物。

悠洋棋牌RANER,JIGAODEFENZILIANGHUIDAOZHIZAICHENGMOZHONGBUNENGXINGCHENGJUNYIDEDANYIXIANG,ZAISHIWENHUOQIANGZHIGANZAOGUOCHENGZHONGJIAOLIANFASHENGSHI。ZHEIXIETIAOJIANXIANZHILEDUOYIQINGSUANZHIXIANGJUHEWUDEKUOSANCHENGDU,SHIQIBUNENGYUSUOYOUDE OH-JIFANYING。DANKEYIZAIHONGKAOGUHUATIAOJIANHUORONGRONGTIAOJIANXIASHIXIANYUSUOYOUDEOH-FANYINGYONG,ZHEIXIETIAOJIANNENGDIXIAOOH-JIZUFENFENZILIANGDEYINGXIANG。

悠洋棋牌KAOLVDAOKUOSANZUOYONGDEBUWANQUAN,DUIYUMEIGEDANDUTIXIDEOH-HENCO-ZUFENDELIXIANGHUNHEBIZHINENGGENJUJINGYANLAIJUEDING,ERHUAXUESHULIANGJISUANSHIHAOWUYONGCHUDE。DANGOH-HENCO-SHIJIHUNHEBIWEI9:1(SANZUFENYIGUTIJI)SHI,HUODEDETUMOJUYOUHAODEJIXIEXINGNENGHENAIHUAXUEPINXING。

6、清漆制备过程

悠洋棋牌OH-JIFENSANTIKEPINRUCHENGMOZHUJIYONGLAIXINGCHENGHAODETUMO。DANGJIARUSHUANZHONGHEHOU,GAIHUNHEWUFANGZHIGAODEPHZHIHEFUSHIYIZHIJIYIBIMIANXIUBAN。SHUHUAHOUJIARUYANLIAORUNSHIJI、XIAOPAOJI、YANLIAOJITIANLIAO,RANHOUSHANGSHAMOJIHUOSHISHAMOJIYANMOZHISUOXUXIDU。QINGQIGUOLVHOU,RUGUOXUYAODEHUA,KEYONGZENGCHOUJI、SHUIHUOXIAOPAOJILAIDIAOZHENGZHANDU。

QINGQIZHIBEISHI,KEZAIJIXIEJIAOBANXIAJIARU100%SHUZHIFENDEQINSHUIDENCO-ZUFEN。ANCHANGGUITONGQI5~15 FENZHONGHOU,WULIAOJIUKEYIJINXINGJIAGONGLE。

RUGUOJIAOLIANJISHIYONGNCO-ZUFENRONGYUYIBINGXITANSUANZHIDE80%RONGYESHI,QIHUNHEJIARUKEYONGSHOUGONGWANCHENG。

ZONGZHI,YONGYUSHUANGZUFENJUANZHITIXIDEKAISHIPEIFANGSHISHIFENJIANDANDE,RUXIA:

OH-基分散体(固体分45%)       844.4
二甲基乙醇胺(约50%)             13.0份
丁基乙二醇                            42.7份
消泡剂(约50%溶
于丁基乙二醇)                         3.2份
水(施工制加入)                       96.7份
亲水改性的多异氰酸酯           100.0份

ZAIZHIBEISHUANGZUFENSHUIXINGJUANZHIQINGQISHI,CAOZUORENYUANYINGXIANXIANGFENSANTITULIAOCAOZUORENYUANLEJIEYOUGUANSHIYI。TEBIESHIJIQISHEBEIDECHULIYINGYINQIZHONGSHI,RUGUOCANYUFENSANTIGANHOUJIUBURONGYIQINGCHULE,ERSHIDEZEJIANDANYONGSHUICHONGXIJIKE。

7、初步应用实验

悠洋棋牌XIAMIANLIZIBIAOMINGLEJIYUJUHEWUFENSANTIDESHUANGZUFENJUANZHISHUIXINGQINGQIYUXIANJINSHIYONGDEJIYURONGJIDETIXIDEXINGNENGXIANGDANG,SHENZHIYOUXIEXINGNENGGENGHAO。

1.JIEGOUXINGQINGQIYONGYUDIANHUATINGDEMIANQI

表面:                               聚酯,聚碳酸酯
干燥:                         室温或70℃16小时
施工:                  喷涂(单嘴,高压,无空气)
膜厚:                         0.06mm(2涂层)
光泽(60°,%):                          最大50
附着力(划方格)(DIN53151):            1级
耐候试验(DIN 50017):20个循环后无变化
交替度(DIN 50018):    5个循环后无变化
人工老化试验(DIN53383):2000小时后无变化
2.用于塑料门(房门)的底漆和面漆
表面:                         聚酯,聚碳酸酯,木材
干燥:                             室温或最高40℃
施工:                      喷涂(双嘴喷头,高压)
膜厚:                    0.08mm(底漆和面漆)
光泽(60°,%):                           最大65
划方格试验(DIN53151):                   1级
耐候测试(DIN 50017):  20个循环后无变化
交替试验(DIN50018)      5个循环后无变化
悠洋棋牌 人工老化试验(DIN53381):2000小时后无变化

ZHEIXIETULIAOKEYIDAITICHUANTONGDERONGJIXINGSHUANGZUFENJUANZHITIXI。

悠洋棋牌3.LINGWAIHAIZUOLEYINGYONGYUMUZHICHUFANGYONGJUDEQINGQIDECESHI,QIXIAOGUOYEBUCUO,ZHEILIJIUBUXIANGXIMIAOSHULE。

8、小结

JUANZHIQINGQITIXISHIGEGAOXINGNENGDETIXI。OH-JIHENCO-JIZHIJIANDEHUAXUEFANYINGXINGCHENGTUMO, QIJUYOUJIHAOJIXIEHEHUAXUEKANGXING。YIWANG,GAITIXIJUXIANYURONGJIXINGDE-ZHEISHIYIGEQUEDIAN。

XIANZAIPEIZHIYOUHAODESHIYONGQIDESHUIXINGSHUANGZUFENJUANZHITIXIYICHENGWEIKENENG,YINWEIYOULESHUIRUHUADEYIQINGSUANZHIZUFEN。JIEGUOXIANSHIZHEIXIESHUIXINGTIXIDESHIGONGXINGNENGTONGRONGJIXINGDEXIANGDANG。

悠洋棋牌ZHEIXIEQINGQIMENBUSHIYUPEIZHIGAOGUANGZEQINGQI,YINWEIDAIBOOH-JIDEFENSANTIHAIBUNENGZHIDERURONGJIEXINGSHUZHICHENGERCIFENSANTINEIYANGDEGUANGZEDU。WEILAIJIANGHUIGAOZHIZHEIZHONGJUXIANXINGXUDUOJIUJIEJUE。SHUANGZUFENJUANZHISHUIXINGQINGQI,QIXINDEQIANJINGSHIYONGYUMUZHIXIANWEIBAN、BUHANSHIMIANDEXIANWEISHUINIBAN、KUANGWUSHENZHIJINSHUDICAIDENGFANGMIAN。TEBIESHITAHAODEJIXIEXINGNENG、HUAXUEWENDINGXINGHENAIHOUXING(ZAICHUNBINGXISUANFENSANTITIAOJIANXIA)YEYICHENGWEISHISHI,KEYIDAITIQIGUANGZEDUBUGAODEQUEXIAN。

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