商铺名称:上海标卓科学仪器有限公司
联系人:王经理()
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联系地址:中国上海奉贤区 上海市奉贤区扶港路1088号2幢1218室
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<\/strong><\/font><\/span><\/p> 上海标卓科学仪器有限公司15002100776<\/strong><\/span>是仪器仪表行业的新锐企业,检测仪器设备的生产、销售、维修、计量管理于一体的综合型公司。公司生产整套完整的精密测量仪器及相关解决方案,并代理、经销国内外几百家知名品牌的检测仪器和机械设备。主要涉及:机械设备检测仪器、长度类、力学类、电学类、试验类、光学类、精密量仪类、无损测试、理化分析、教学仪器、专用量仪及环境试验设备仪器等等系列,销售产品达成千上万多种,为企业质量管理及企业认证提供完善硬件设备的一条龙服务。 <\/span><\/span> <\/span><\/font><\/p> 联系人:王经理<\/span><\/strong><\/span><\/font><\/p> 手机 <\/span>15002100776<\/span><\/strong><\/span><\/font><\/p> 联系电话:021-61523869<\/span><\/strong><\/span><\/font><\/p> 地址: <\/span><\/span>上海闵行区向阳工业园颛兴东路1528<\/span>号<\/span><\/strong><\/span><\/font><\/p> <\/span><\/font><\/p> <\/span><\/font><\/p> <\/span><\/font><\/p> <\/p> 技 <\/span>术 <\/span>方 <\/span>案 <\/span>书 <\/span><\/strong><\/span><\/p> 产品名称:<\/span>EVA<\/span>交联度测试系统<\/span><\/span><\/u><\/p> <\/b><\/p> 一、<\/span><\/b>eva<\/span><\/b>交联度产品介绍:<\/span><\/b><\/span><\/p> 仪器<\/span><\/b>:<\/span><\/b>*大口圆底烧瓶及塞子。用磨口或软木塞连接。如进行<\/span>1~2<\/span>只样品测定以<\/span>500mL<\/span>为宜;如进行<\/span>2~3<\/span>只样品测定以<\/span>1000mL <\/span>为宜;如进行数只但不超过<\/span>6<\/span>只则以<\/span>2000mL<\/span>的烧瓶较为适用。<\/span><\/span><\/p> *加热套或恒温油槽。要求热容量足以加沸二甲苯(沸点为<\/span>135~144<\/span>°<\/span>C<\/span>)。<\/span><\/span><\/p> *回流冷凝管。带磨口或以软木塞和烧瓶连接,冷凝管磨口尺寸与圆底烧瓶的磨口尺寸一致,长度适当。<\/span><\/span><\/p> *支架和夹子。用于固定烧瓶和冷凝管。<\/span><\/span><\/p> *真空烘箱。附带能产生<\/span>0.87MPa<\/span>真空度的真空源。<\/span><\/span><\/p> *<\/span>120<\/span>目不锈钢网<\/span><\/span><\/p> *精度为<\/span>1/10000<\/span>的托盘电子分析天平。<\/span><\/span><\/p> *干燥器<\/span><\/span><\/p> 试剂<\/span><\/b><\/span><\/p> *二甲苯<\/span>A.R<\/span>,分析纯或化学纯。<\/span><\/span><\/p> *<\/span>2<\/span>,<\/span>6-<\/span>二叔丁基<\/span>-4-<\/span>甲基苯酚(即抗氧剂<\/span>264<\/span>)。<\/span><\/span><\/p> 二、<\/span><\/b>eva<\/span><\/b>交联度实验方法:<\/span><\/b><\/span><\/p> 1<\/span><\/b>、分析步骤<\/span><\/b><\/span><\/p> 不锈钢网袋的制作:<\/span><\/b><\/span><\/p> *先将不锈钢网洗净,晾干,放入<\/span>100<\/span>℃<\/span>左右的烘箱烘干,冷却后截取<\/span>35<\/span>×<\/span>90mm<\/span>,对折成<\/span>35<\/span>×<\/span>45mm<\/span>的长方形,两侧边折进<\/span>7.5mm<\/span>钉住,制成顶端开口的袋(尺寸约<\/span>20<\/span>×<\/span>45mm<\/span>),并且要保证折起的两边钢好能被订书钉钉住,而且做好的试样袋要能放入烧瓶,尺寸不能太大。称重量为(<\/span>W1<\/sub><\/span>)。<\/span><\/span><\/p> 2<\/span><\/b>、分析操作<\/span><\/b><\/span><\/p> *将已交联过的<\/span>EVA<\/span>胶样(在不同部位取样),用剪刀剪成小碎片,在<\/span>1/10000<\/span>电子天平式准确称取试样<\/span>0.1450~0.1500 g<\/span>准确到<\/span>0.0001g<\/span>,将样品放入已知重量的<\/span>120<\/span>目不锈钢网袋里,称(袋和试样)重(<\/span>W2<\/sub><\/span>)。<\/span><\/span><\/p> *将袋口折边钉上,构成试样包,称(袋和试样)重(<\/span>W3<\/sub><\/span>)。<\/span><\/span><\/p> *试样包用铜丝悬吊在回流装置的烧瓶中,以二甲苯为溶剂(溶剂要充足,<\/span>2000mL<\/span>烧瓶要装<\/span>1000g<\/span>溶剂;<\/span>1000mL<\/span>烧瓶要装<\/span>500g<\/span>溶剂)。沸腾回流<\/b><\/span>5h<\/span><\/b>,一般回流速度为<\/b><\/span>20~40<\/span><\/b>滴<\/span><\/b>/<\/span><\/b>分<\/span><\/b>。(为防止试样的再度交联,加入溶剂重量<\/span>1%<\/span>左右的抗氧剂)冷却,取出试样袋(悬挂<\/b>起来,以除去过量的溶剂)后,再放入真空烘箱(温度<\/b><\/span>
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