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耐高溫輸送帶部件所用膠料的特點介紹

添加時間:2020-11-19 10:17:55   瀏覽次數:2842  

       個(ge)別耐高溫輸(shu)送帶各種部件(jian)所用的 膠(jiao)料(liao)包含(han)籠(long)罩膠(jiao)、緩沖膠(jiao)、布層擦膠(jiao)、布層貼膠(jiao)四(si)種。

       第一種(zhong):籠(long)罩(zhao)膠(jiao)

       耐(nai)(nai)高溫輸(shu)送帶利(li)用(yong)(yong)(yong)時受物料(liao)的(de)(de) 沖擊、磨損跟微生物侵蝕(shi),以(yi)及各種老化作(zuo)用(yong)(yong)(yong)。因此,請求籠罩膠(jiao)(jiao)(jiao)存(cun)在(zai)(zai)較(jiao)好的(de)(de) 拉(la)伸強度(≥18Mpa)跟耐(nai)(nai)磨性(磨耗量(liang)0.8cm3/1.61Km),耐(nai)(nai)老化、耐(nai)(nai)生物侵蝕(shi)。此外還(huan)請求存(cun)在(zai)(zai)良好的(de)(de) 粘性等(deng)(deng)工藝(yi)機能(neng),配方(fang)設計要(yao)點如下:生膠(jiao)(jiao)(jiao)以(yi)天然橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)為(wei)主或并用(yong)(yong)(yong)適量(liang)的(de)(de) 丁(ding)苯橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao),含膠(jiao)(jiao)(jiao)率把持(chi)在(zai)(zai)50%~55%。硫化體(ti)系采取硫磺、增(zeng)進劑(ji)傳統配合(he)體(ti)系。在(zai)(zai)天然橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)配方(fang)中(zhong),硫磺用(yong)(yong)(yong)量(liang)為(wei)2.5品(pin)質份(fen)左右;在(zai)(zai)丁(ding)苯橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)配方(fang)中(zhong),硫磺用(yong)(yong)(yong)量(liang)為(wei)1.5~2.0品(pin)質份(fen)。增(zeng)進劑(ji)個別采取M、DM并用(yong)(yong)(yong),增(zeng)進劑(ji)CZ、NOBS等(deng)(deng)后(hou)效性增(zeng)進劑(ji)適合(he)于(yu)含丁(ding)苯橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)(de) 膠(jiao)(jiao)(jiao)料(liao)中(zhong)。補強劑(ji)可選用(yong)(yong)(yong)高耐(nai)(nai)磨炭黑(hei)、中(zhong)超(chao)耐(nai)(nai)磨炭黑(hei)等(deng)(deng),用(yong)(yong)(yong)量(liang)為(wei)40~50品(pin)質份(fen)。軟(ruan)化劑(ji)常選用(yong)(yong)(yong)的(de)(de) 品(pin)種有機油、重油、松(song)焦(jiao)油、古馬隆樹脂(zhi)跟石油樹脂(zhi)。

       第二種:緩沖膠

       輸送帶緩(huan)沖(chong)膠(jiao)在籠(long)罩膠(jiao)跟帶芯層之間,能(neng)增加兩者(zhe)的(de) 粘(zhan)(zhan)協力,并可接(jie)收跟疏散輸送物(wu)料的(de) 沖(chong)擊力,起(qi)緩(huan)沖(chong)作用(yong)。請求膠(jiao)料存在良好(hao)(hao)的(de) 粘(zhan)(zhan)著(zhu)性(xing)(膠(jiao)與布的(de) 附(fu)著(zhu)力≥3.15N/mm),彈性(xing)大(da)、生熱(re)小、散熱(re)好(hao)(hao)、工藝機能(neng)好(hao)(hao)。

       生膠(jiao)個(ge)別采取(qu)天然橡膠(jiao)跟(gen)順丁橡膠(jiao)并用(yong)(yong)(yong)(yong)(yong),含膠(jiao)率(lv)為(wei)50%~55%。大(da)(da)(da)傾(qing)角(jiao)輸(shu)送帶由基帶、擋邊(bian)(bian)、橫隔(ge)板(ban)(ban)3部分組成(cheng)。擋邊(bian)(bian)起防止物(wu)料測滑撒(sa)落(luo)的作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)。為(wei)便(bian)于繞過滾(gun)筒,檔(dang)邊(bian)(bian)設計(ji)成(cheng)波紋狀(zhuang);橫隔(ge)板(ban)(ban)的作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)是(shi)承托物(wu)料,為(wei)了實現大(da)(da)(da)傾(qing)角(jiao)輸(shu)送,采用(yong)(yong)(yong)(yong)(yong)T型TC型。檔(dang)邊(bian)(bian)和橫隔(ge)板(ban)(ban)是(shi)用(yong)(yong)(yong)(yong)(yong)二次(ci)硫(liu)化(hua)(hua)的方法與基帶連接的,具有很(hen)高的連接強度(du)。硫(liu)化(hua)(hua)體系宜利用(yong)(yong)(yong)(yong)(yong)低(di)硫(liu)配合,以(yi)進步膠(jiao)層跟(gen)布層之間(jian)的 粘著力(li)。增進劑(ji)采取(qu)M、DM、TMTD并用(yong)(yong)(yong)(yong)(yong)體系。大(da)(da)(da)傾(qing)角(jiao)輸(shu)送帶由基帶、擋邊(bian)(bian)、橫隔(ge)板(ban)(ban)3部分組成(cheng)。擋邊(bian)(bian)起防止物(wu)料測滑撒(sa)落(luo)的作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)。為(wei)便(bian)于繞過滾(gun)筒,檔(dang)邊(bian)(bian)設計(ji)成(cheng)波紋狀(zhuang);橫隔(ge)板(ban)(ban)的作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)是(shi)承托物(wu)料,為(wei)了實現大(da)(da)(da)傾(qing)角(jiao)輸(shu)送,采用(yong)(yong)(yong)(yong)(yong)T型TC型。檔(dang)邊(bian)(bian)和橫隔(ge)板(ban)(ban)是(shi)用(yong)(yong)(yong)(yong)(yong)二次(ci)硫(liu)化(hua)(hua)的方法與基帶連接的,具有很(hen)高的連接強度(du)。炭黑常(chang)用(yong)(yong)(yong)(yong)(yong)高耐磨跟(gen)半補強炭黑并用(yong)(yong)(yong)(yong)(yong),用(yong)(yong)(yong)(yong)(yong)量(liang)不宜過多,通常(chang)在10品質份左(zuo)右。軟(ruan)化(hua)(hua)劑(ji)選用(yong)(yong)(yong)(yong)(yong)增粘性較好的 品種,如松焦油、固(gu)體古馬隆(long)等。

       第(di)三種:擦膠

       耐高溫輸送帶(dai)擦膠的(de) 重(zhong)要作用是將帶(dai)芯(xin)帆布(bu)層(ceng)粘合成一個整體。請求對帶(dai)芯(xin)資料有良好的(de) 粘合機能(布(bu)與布(bu)之間(jian)的(de) 附著強(qiang)度不低于4.5N/mm),耐疲勞(布(bu)層(ceng)屈撓次(ci)數≥2.5萬(wan)次(ci)/全剝),并且要有足夠(gou)的(de) 可塑性(可塑度0.5~0.6)跟抗(kang)焦燒等(deng)工藝(yi)機能。

       第四種(zhong):生膠(jiao)(jiao)以(yi)天然橡(xiang)膠(jiao)(jiao)為主,并用(yong)(yong)20~30品質(zhi)份丁(ding)苯橡(xiang)膠(jiao)(jiao),含膠(jiao)(jiao)率50%左右(you)。硫化(hua)體系同個別的 硫磺、增(zeng)進(jin)劑體系。增(zeng)進(jin)劑個別采(cai)取M跟(gen)DM并用(yong)(yong),或加入少量的 TMTD,以(yi)加快硫化(hua)速度(du),但(dan)要留神避免膠(jiao)(jiao)料焦燒。炭(tan)黑應選用(yong)(yong)半補強炭(tan)黑或其余(yu)軟(ruan)質(zhi)炭(tan)黑,用(yong)(yong)量10品質(zhi)份左右(you)。摻用(yong)(yong)丁(ding)苯橡(xiang)膠(jiao)(jiao)的 擦膠(jiao)(jiao)應恰(qia)當(dang)增(zeng)加古(gu)馬隆樹(shu)脂(zhi)跟(gen)石油(you)樹(shu)脂(zhi)的 用(yong)(yong)量,否則會(hui)降落布層的附著力(li)。

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