合成橡胶工业
閤成橡膠工業
합성상효공업
CHINA SYNTHETIC RUBBER INDUSTRY
2009年
6期
449-453
,共5页
橡胶%硫化促进剂%N-环己基-2-苯并噻唑次磺酰胺%团粒法%造粒
橡膠%硫化促進劑%N-環己基-2-苯併噻唑次磺酰胺%糰粒法%造粒
상효%류화촉진제%N-배기기-2-분병새서차광선알%단립법%조립
rubber%vulcanization accelerator%N-cyclohexyl-2-benzothiazole sulfenamide%agglomeration process%granulation
采用团粒(聚)法制备了橡胶硫化促进剂N-环己基-2-苯并噻唑次磺酰胺(CBS)粒状产品,确定了团粒造粒工艺的最佳条件,并在此条件下进行了稳定运行实验.结果表明,用脱水后含水率为20%的CBS湿粉料为造粒原料,采用团粒法制备CBS粒状成品的最佳工艺条件:黏结剂乙烯-乙酸乙烯酯共聚物质量分数为CBS干基料的8%、湿粒含水率为34.77%,造粒盘倾角为35～45°、造粒盘转速为65 r/min,黏结剂乳液喷加时间约为10 min,造粒周期为50～60 min,烘箱干燥温度为(55±2) ℃,烘干时间为210 min;在最佳工艺条件下制得的粒状CBS性能均达到指标要求:初熔点不小于96.0 ℃,粒径为2.0～4.5 mm,粒子的平均强度在2.0～8.0 N,加热减量不大于1.00%,灰分不大于0.40%,成粒率超过60%.该粒状CBS能完全取代粉状产品,对橡胶的硫化性能无不良影响.
採用糰粒(聚)法製備瞭橡膠硫化促進劑N-環己基-2-苯併噻唑次磺酰胺(CBS)粒狀產品,確定瞭糰粒造粒工藝的最佳條件,併在此條件下進行瞭穩定運行實驗.結果錶明,用脫水後含水率為20%的CBS濕粉料為造粒原料,採用糰粒法製備CBS粒狀成品的最佳工藝條件:黏結劑乙烯-乙痠乙烯酯共聚物質量分數為CBS榦基料的8%、濕粒含水率為34.77%,造粒盤傾角為35～45°、造粒盤轉速為65 r/min,黏結劑乳液噴加時間約為10 min,造粒週期為50～60 min,烘箱榦燥溫度為(55±2) ℃,烘榦時間為210 min;在最佳工藝條件下製得的粒狀CBS性能均達到指標要求:初鎔點不小于96.0 ℃,粒徑為2.0～4.5 mm,粒子的平均彊度在2.0～8.0 N,加熱減量不大于1.00%,灰分不大于0.40%,成粒率超過60%.該粒狀CBS能完全取代粉狀產品,對橡膠的硫化性能無不良影響.
채용단립(취)법제비료상효류화촉진제N-배기기-2-분병새서차광선알(CBS)립상산품,학정료단립조립공예적최가조건,병재차조건하진행료은정운행실험.결과표명,용탈수후함수솔위20%적CBS습분료위조립원료,채용단립법제비CBS립상성품적최가공예조건:점결제을희-을산을희지공취물질량분수위CBS간기료적8%、습립함수솔위34.77%,조립반경각위35～45°、조립반전속위65 r/min,점결제유액분가시간약위10 min,조립주기위50～60 min,홍상간조온도위(55±2) ℃,홍간시간위210 min;재최가공예조건하제득적립상CBS성능균체도지표요구:초용점불소우96.0 ℃,립경위2.0～4.5 mm,입자적평균강도재2.0～8.0 N,가열감량불대우1.00%,회분불대우0.40%,성립솔초과60%.해립상CBS능완전취대분상산품,대상효적류화성능무불량영향.
Granular product of rubber vulcanization accelerator N-cyclohexyl-2-benzothiazole sulfenamide(CBS) was prepared by granulation technology of agglomeration, optimum conditions were determined, and repeated test was contucted under conditions. The results showed that after dehydration, wet powder of CBS with 20% moisture was used as raw material of granulation. The optimum conditions were as follows:mass fraction of adhesive ethylene-vinyl acetate copolymer based dry CBS 8%, water content of wet granule 34.77%, incination of granulating disc 35-45°, rotation speed of granulating disc 65 r/min, spray time of adhesive emulsion about 10 min, granulation period 50-60 min, drying temperature (55±2) ℃,and drying time 210 min. The properties of granular product of CBS prepared at the optimum conditions met the requirement of production indicator. Initial melting point was not less than 96.0 ℃,the granule size was in the range of 2.0-4.5 mm, average broken intensity was 2.0-8.0 N, heating loss was not more than 1.00%, ash was not more than 0.40% and granulating rate was more than 60%. The granular product could replace the powder one completely, and there was no negative effect on vulcanization of rubber.
