防老劑NBC
名(ming) ? 稱:二丁基(ji)二硫代氨基(ji)甲酸(suan)鎳
分子(zi)式:C18H36N2S4Ni
分子量:467.5
性 質:
深綠色粉(fen)末(mo)。密度(du)126g/cm3。熔點不低于83°C,溶(rong)于(yu)氯仿(fang)、苯、二硫(liu)化(hua)碳(tan)、微溶(rong)于(yu)丙酮、乙醇(chun),不溶(rong)于(yu)水(shui)和汽油,貯藏穩定(ding)。
功(gong) 用:
氯(lv)(lv)丁橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)、氯(lv)(lv)磺化(hua)聚乙烯橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)、氯(lv)(lv)醚橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)、丁苯橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)、丁腈橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)用(yong)抗(kang)臭氧(yang)(yang)(yang)劑(ji)。在(zai)(zai)氯(lv)(lv)丁橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)中能(neng)(neng)提高膠(jiao)(jiao)(jiao)(jiao)料耐(nai)熱性能(neng)(neng),減少膠(jiao)(jiao)(jiao)(jiao)料在(zai)(zai)陽光下的(de)(de)變(bian)色現(xian)象,對硫化(hua)稍有(you)遲緩作(zuo)用(yong)。在(zai)(zai)用(yong)金屬氧(yang)(yang)(yang)化(hua)物(wu)硫化(hua)的(de)(de)氯(lv)(lv)磺化(hua)聚乙烯膠(jiao)(jiao)(jiao)(jiao)料中也是一種熱穩定劑(ji)。本品在(zai)(zai)丁苯橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)中對臭氧(yang)(yang)(yang)和天(tian)候(hou)老化(hua)龜(gui)裂及屈(qu)撓龜(gui)裂有(you)較好(hao)的(de)(de)防護作(zuo)用(yong),但(dan)無抗(kang)氧(yang)(yang)(yang)化(hua)效能(neng)(neng),需與優良(liang)的(de)(de)抗(kang)氧(yang)(yang)(yang)劑(ji)并用(yong)。本品在(zai)(zai)膠(jiao)(jiao)(jiao)(jiao)料中易分(fen)散,可使膠(jiao)(jiao)(jiao)(jiao)料著綠色,但(dan)不污染。在(zai)(zai)氯(lv)(lv)丁橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)中一般用(yong)量為(wei)1-2份,在丁苯橡膠中(zhong)為0.5-3份。
質量(liang)指標:
項目指標(biao)
外觀???????????深綠色(se)粉(fen)末或(huo)顆粒
熔點 °C????????≥83
水份 % ≤???????0.3
灰份(fen) % ≤???????20
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