熱塑性彈性體TPE充油的重點與難點

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所屬分類:彈性體文章

一、前言

做共混TPE/TPR材料的都知道,TPE/TPR的主要原料是苯乙烯類彈性體SEBS/SBS,此外基本都會充油,添加一些助劑。很多人都認為充油的作用是降低成本,所以有些廠家就拼命的給SEBS/SBS充油,使得其制品生產或成型后會有滲油或粘手的現象;其實,充油的最大的作用是改善SEBS/SBS的流動性:SEBS/SBS的流動不好,加工性能較差,無法做成100%的SEBS/SBS制品,例如:通常我們看到SEBS/SBS物性表上拉伸強度與硬度的測試都不是純SEBS/SBS的參數,這些參數的測定是SEBS/SBS按照基本配方制成的,每一個廠家的基本配方或多或少有些出入,因此不同廠家測試的產品參數有出入是很正常的。

二、充油的種類

充油的種類有芳香烴油,環烷油,石蠟油等。我們生產中常說的充白油,其實就是充環烷油或石蠟油,國內的SBS油膠主要是充環烷油。注意一下,環烷油與石蠟油是無法同時充的,就是充了石蠟油后就不能充環烷油,反之一樣,因此大家在充油的時候需要注意一下,選擇油時要選擇凝點低的,閃點高的白油,這樣的油流動性能好,加工性能好(閃點低的油加工時會有火花或者煙霧產生)。不懂的朋友可以選擇正規渠道的白油,購買的時候多問一句。

fangxiangjingyou,huanwanyou,shilayoushiankuangwuyoubenshenfenzijiegou、zuchengfangmiandechayibutongerfenleide。

tpe/tprfangjingyouhegaofangjingyoudefangjinghanzui(ca)wei40%zuoyou,huanwanyouzhongdehuanwanjinghanliang(cn)wei40%zuoyou,shilajiyouzhongdeshilajinghanliang(cp)wei65%zuoyou。qiwulixingnengcunzaichayi,yujiaozhanjizhanliaozhijiandewuliqinhexingnengyecunzaijiaodadechayi。zhezhongqinhenenglishijiyuxiangsixiangrongdeyuanli,suizhuchongyouliangdezengjia,sbsdecheduanshenchanglvzengda,rongtiliudongzhishu(mi)tigao,lashenqiangdu、300%dingshenyingli、shaoshiaxingyingduheyongjiubianxingxiajiang。yongjiubianxingsuichongyouliangzengjiaerxiajiangzhuyaoshitianchongyoushijudingerxilianduanfenzijiandezuoyonglijianruo,sbsruanduandehuodongkongjianzengdadeyuangu。xiamianfenshushiyongzhongleihetianjialiangduitprjiagong、shiyongxingnengdeyingxiang:

(a) tpe/tprfangjingyou

yongtu:tpe/tprfangjingyoudezhuyaozuoyongshigaishanxiangjiaodejiagongxingneng,bangzhujiaoliaozhongtianchongjidehunhehefensan,jiangdijiaoliaozhanduhehunliannenghao,diaozhengliuhuajiaodewulijixiexingneng。zuoweicaozuoyou,tianchongyouguangfanshiyongyuyitianranxiangjiaojihechengxiangjiaoweiyuanliaodexiangjiaozhipin。

tpe/tprfangjingyouyuhechengjiaodexiangrongxinghao,ketigaoluntaizhuazhuxinghezhidongxing,beiguangfanyongyuluntaishengchan。fangxiangjiyouyibenhuanbubaohejingjiegouweizhu,yuxiangjiaodexiangrongxingshizuihaode,youliyutianchonghejiangdilianjiaowendu,lashenqiangduhesilieqiangdugao,jiagongxingnengyouyulianwanjing。

dantadequedianshidanxingjiaodi,diwenxingnengcha,yansehenshen,wuranxingqiang,erqiehanyoudaliangduohuanfangjing,juyouqianzaidezhiaiweixian。zaigaofangjingyouzhonghanyouduozhongchouhuanfangjingyoupahs(youchengpca),qizhongyixiebeiguiweierleizhiaiwuzhi。yinci,oumengzai2005/ 69/ eczhilingzhongduiqizhong8zhongqiangzhiaiwupahsjinxingleyangexianzhi。

yingxiangyinsu:tpe/tprfangjingyoudezhiliangzhibiaorubizhong、zhandu、fangjinghanliangdengxiangmu,duijiaoliaodewulixingnengyouhendadeyingxiang。youdebenandianyuegao,biaomingyoudefangjinghanliangyuegao。fangjinghanliangyingxiangjiaoliaodeyingdu。fangjinghanlianggao,keyigaishanxiangjiaodedanxingjirenxing。duiyuxiangjiao,gaofangxiangjinghanliangyouzhuyutongguogaishanxiyoudeshijian,jiakuaihunliancongertigaoshengchannengli。gaofangxiangjinghanliangtongliyetigonglegenghaodetanheifensanxingneng,youzhuyushichanpinxingnengzaiyibangongyitiaojiankongzhixia,dadaogenghaodelianxuyizhixing。

(b)tpe/tprshilayou

shilajixiangjiaozhuanyongyou,shilayouyouchengkuangwuyou,shicongyuanyoufenliusuodedaodewusewuweidehunhewu。juyoushilajinghanlianggao,fangjinghanliangdi,shandiangao,huifaxiaodengtedian。shiyongyuyibingxiangjiao、dingjixiangjiaodengpeifang。shilajiyoudefenzijiegoushiyizhilianjingweizhu,xiangrongxingchayixie,yishenchu,diwenshiyouxilaxianxiang。

shilajiyounengtigaoshiyangdeliudongxing、naiqunaoxingheguangwendingxing,bingqieransewendingxinghao,zheshiyinweishilayouzhonglianwanjingzhiliangfenshugao,fangjingzhiliangfenshuhendi。juyoulianzhuangjiegoudewanjingyouxiangduiyuhuanwanjingyouhefangjingyougengweiroushun,zheyouliyutigaoshiyangdenaiqunaoxing。danlingyifangmian,youyusbsdewangzhuangjiegouzhongyouhenduokaikou,wanjingyoujiaohuanwanjingyouhefangjingyouyougengdadetouguosudu,congjiaotizhongshenchudeqingxianggengda,bingqiewanjingyoudejixingxiao,qianyishixuyaodenengliangxiao,yincigengyicongsbszhongshenchu。

(c)tpe/tprhuanwanyou

naphthenic base crude oilshuxiangjiaocaozuoyou,(jiagongyou、tianchongyou)zhilei,shiyihuanwanjingweizhuyaochengfendeshiyou,zhuyaoshihuanwuwan、huanjiwanjiqitongxiwu。xiangduimidu0.92-0.95,shandian>160 ℃,suanzhi<0. lmgkoh/g,benandian66-82,liudongdian-40—-12℃。zhucunyuyinliang、tongfengdekufangnei,yuanlihuozhong、reyuan。guoneihuanwanjiyuanyouziyuanzhuyaojizhongzailiaohehekelamayiliangdi。

熱塑性彈性體TPE充油的重點與難點

shandiangaodetpe/tprhuanwanyouchanpin,shiyongyuyibingxiangjiao、sanyuanyibingxiangjiaojiresuxingdanxingtisbsdechongyoujizhixiegongyezhongdetprliliaodeshengchanhetianranxiangjiao、dingbenxiangjiao、shundingxiangjiaochanpindejiagong。tpe/tprhuanwanjiyoujuyouleisifangjingtandehuanwanjiegouheleisizhiliantandezhilianjiegou,bishilajiyoujuyougenghaodexiangjiaoxiangrongxing,tongshiyihuanxingbaohejingjiegouweizhu,nailaohuaxingnenghao,youkefulefangxiangjiyoudewuranxing,juyoulianghaodejiankanganquanxing,tongchangkeshihegezhongxiangjiao。

youyuhuanwanyouzhonghuanwanjinghanlianggao,nengyusbszhongdepbduanxiangrong,shidepbduanfenziliangengjiarouruan,tongshi,tpe/tprhuanwanyoudejiarushidefenzijiandezuoyongjianruo,fenziliandehuodongxingzengjia,congerdaozhigonghunwudekesuxingzengjia,shidelianduanyundongfanweizengda,lashenshilianduannenggouchongfenshenzhan,wailixiaochuhouyourongyihuifu,fenzilianroushunxingzengjia,yincisbsdecheduanshenchanglvzengda,rongtiliudongzhishu(mi)tigao、tixideyingdu、300%dingshenqiangdudouyouhendachengdudexiajiang。

suizhutpe/tprhuanwanyouyongliangdezengjia,fenzijianzuoyonglijianruo,fenzilianzaiwailizuoyongxiayifashenghuayi、duanlie,guerlashenqiangduxiajiang。duanlieshenchanglvhechongjihuidanxingzhuyaoyutixidezhandanxingzhiyouguan,huanwanyoudejiarushifenzilianroushunxingtigao,suoyiduanlieshenchanglvhechongjihuidanxingzengjia。

tprzhongsbsfenziliangdaxiaojuedingletianchongdeduoshao,tpe/tprhuanwanyoushandianguodihuozheyoufenziliangfenbuguokuandourongyiyichu。

三、判斷填充油質量的關鍵指標

chongyouxiangjiaoduihuanwanyoudezhiliangzhibiaoyaoqiuzhongzuiweizhongyaodeyixiangshifangjinghanliang,tayingxiangchanpindehuangbianxing,fangjinghanliangyuedi,chanpinbianhuangdesuduyueman,chanpinpinzhiyuegao。

(1)bunengshiyongfangjingzhiliangfenshugaodetpe/tprhuanwanyou。youyusbsdedafenzishiyoujubenyixi(ps)shuzhiduanyujudingerxixiangjiaoduangouchengde,qianzheweiyufenziliangduan,pslianduanjiandezuoyonglishiqixingchengxiewulijiaoliandian,jujichengwulijiaolianquyu,fensanyujudingerxixiangzhong,chengweiguanxiangfenlizhuangtai。erfangjingzhiliangfenshugaodehuanwanyouderongducanshuyupsdejiejin,fangjingfenzijizhongzaijubenyixixiangzhong,xueruolejiaoliandian。psweiquruanhuahou,xiangjiaoqiangdusunshifeichangda,erqiefangjingzhiliangfenshuyuegao,duisbsxingnengdeyingxiangjiuyueda,suoyiyingxuanzefangjingzhiliangfenshuxiaoyu6%deyoupin。

(2)genjuxiangsixiangrongyuanli,tpe/tprhuanwanyouyusbsdexiangrongxingjiaoshilayouhao,bingqieqiangdusunshixiao,danshiyangdeshaoeraxingyingduxiangduijiaogao,liudongxing、naiqunaoxingheguangwendingxingburutianchongshilayoudehao。

(3)qitayoupinxingnengduisbsxingnengdeyingxiang

zhanzhongchangshu:youpinzhanzhongchangshu(vgc)dezengda,danxingtilashenqiangduzengda,shaoeraxingyingduzengjiadebijiaomingxian,dandangvgctaida,lashenqiangduxianzhuxiajiang。zheshiyinweivgcfangjingzhiliangfenshuguogao,sbsdeqiangdusunshifeichangda。

zhandu:dangyoupinzhonghanyouyidingliangjixingjiaodadefangjingshi,chongyousbsdemisuizhuzhandudezengjiaerjiangdi,ershaoeraxingyingduquesuizhandudezengjiaerzengda。zheshiyinweiyoupindezhanduzengjia,xiangduifenzizhiliangyexiangyingzengdadeyuangu。zailashenqiangduxiangdangdeqingkuangxia,zhandudideyoupinyouliyutigaoshiyangdeliudongxing,duihoujiagongyouli。

(4)huanwanyouyushilayoudequbie

dangqiandaduoshugongchangdoushishiyonghuanwanyouheshilayou,huanwanyouyusbsdejiehexingbijiaohao,danshijiubijiaozhanshou,ershilayoushizhilianwanjing,shouganshuanghua。

四、絕對實用的小貼士:

1、wangwangwomendechanpindoushiyouyixiacanshude,biruyingdu,lashenqiangdudeng,youzhinengjiangdiyingduyulashenqiangdu,yincitongchangyekeyijiaruyixiegongchengsuliao,biruzuotpeshichanghuitianjiapp,yingduyuqiangdudengcanshukeyigenjuppyuchongyoulianglaidiaojie。

2、tongchangchongyouliangshiyoubeishude,zhengchangdebeishuzai4beizuoyou,chongdeguoduozehuichuxianshenyoudengwenti,ruguowomenchonghaoyouhou,huanxuyaojiangdichengben,keyixuanzetianjiayixietianchongji(tansuangai,huashifendengwuzhi),biruxiediliaotongchangdoutianjiatianchongjitansuangai。

3、chongyoushijinliangbaochizhuandonghuofanchao,ruguojingzhichongyouhenrongyishidetpe/tprjiekuai,erqiegebufenchongyoubujunyun,danggaochongyouliangshi,zhuanshuyingjiangdi,gaozhuansuyishidesebs/sbszhongyichongdeyoushenchu(yuanlileisiyuxiyijishuaiganyuanli)。chongyouhouzuihaofangzhiyiduanshijian,shideyoubeisebs/sbschongfenxishouhouzaishengchan,buranshengchanshiyehuirongyishenyou。

4、ruguonichongyouqingkuangzhengchangshi,huanchuxianshenyouzhanshoudexianxiang,jiushuomingsebs/sbscailiaozhilianghuozheyoudezhiliangbuhao,suoyousebscailiaozhong,ketengdechongyouxiaoguozuihao,youshikeyichongdao10beilvdeqingkuang。

5、chongyoudesbs/sebsyibianhuang,zhuyaoyuanyinshihuanwanyouzhonghanyoububaoheshuangjian,qibeiyanghuabianhuang,tongchangguoneidekelamayihuanwanyoudoushijiaqinghoudeyou,buhuichuxianzhezhongqingkuang,yincixuanyoudeshihouyaozhuyi。

6、tongchangwomenzhizuodetpe/tprzhipinyaoshouganshuanghuaxingnenghaode,eryingxiangqishuanghuadeyuanyinruxia:chongshilayou,yinweishilayoushouganshuanghuaxingyaobihuanwanyoudehao;xuanzexingxinghuodafenziliangdesebs,yinweitamenchongyouliangbixianxinghuoxiaofenziliangsebsyaoda,xiangtongchongyouliangxia,chongyoudexiaoguoyaohao;keyitianjiayixieshuanghuajihuozhefangnianji。

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