复合保存剂BCT-2/NH_3对天然胶乳保存效果及天然橡胶性能的影响  

Influence of BCT-2/NH_3 Compound Preservative on Preserved Properties of Latex and Natural Rubber

作　　者：于伟强[1,2] 李一民[2] 曾日中[3] 黄茂芳[2] 桂红星[2] 

机构地区：[1]中北大学化工与环境学院,山西太原030051 [2]中国热带农业科学院农产品加工研究所,广东湛江524001 [3]中国热带农业科学院橡胶研究所,海南儋州571737

出　　处：《广东化工》2016年第5期74-75,73,共3页Guangdong Chemical Industry

基　　金：国家天然橡胶产业技术体系(No.Nycytx-34-GW3);中国热带农业科学院橡胶研究所基本科研业务费专项资助(项目编号:1630022013007)

摘　　要：将高效、绿色的水溶性广谱杀菌剂BCT-2与NH3复配保存鲜天然胶乳(NRL),研究了复合保存剂对NRL保存效果、天然橡胶(NR)的硫化特性和加工性能、NR硫化胶的物理机械性能的影响。结果表明,采用BCT-2/NH_3复合保存剂保存NRL效果良好,尤其是挥发脂肪酸值(VFA NO)在7天内始终维持在0.05以下;NR混炼胶的硫化速率和最大交联度比采用NH_3+TT/ZnO保存时更高;NR混炼胶的加工性能优良,网络结构较NH_3+TT/ZnO保存时更稳定;NR硫化胶的物理机械性能优于采用NH_3+TT/ZnO保存时硫化胶,拉伸强度达到26.23 MPa,撕裂强度达到30.71 k N/m。BCT-2, an efficient, eco-friendly, water-soluble broad-spectrum preservative, was used to compound with ammonia to preserve natural rubber latex （NRL）. The preserved effect of NRL, the vulcanization characterizations and the processing performances of natural rubber （NR） and the physical and mechanical properties of vulcanized NR were analyzed. The results indicated that the compound preservative BCT-2/NH3 had a good effect on preservation; the VFA NO was below 0.05 throughout 7 days, especially. The vulcanization rate of rubber compound and the degree of cross linking was higher than that preserved by NH3＋TT/ZnO The process ability of compound rubber was good, the network structure was more stable than which preserved by NH3＋TT/ZnO.The physical and mechanical properties of vulcanized NR was better than which preserved by NH3＋TT/ZnO, the tensile strength was 26.23 MPa, tear strength was 30.71 kN/m.

关 键 词：复合保存剂 天然胶乳 物理机械性能 

分 类 号：TQ331.2[化学工程—橡胶工业]