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style="font-family:宋体">硅烷偶联剂在铸造树脂生产中的应用以及效枛�/span></p><p><span style="font-family:宋体">一、行业基本概念及定义９�/span></p><p>Ø <span style="font-family:宋体">呋喃树脂是指以具有呋喃环的糠醇和糠醛作原料生产的</span></p><p><span style="font-family:宋体">树脂类的总称</span>.<span style="font-family:宋体">用于铸造制芯，大、中型铸件小规模生产、�/span></p><p>Ø <span style="font-family:宋体">自硬呋喃树脂砂是以呋喃树脂为粘结剂，并加入催化剂</span></p><p><span style="font-family:宋体">混制出型砂，不需烘烤或通硬化气体，即可在常温下佾�/span></p><p><span style="font-family:宋体">砂型自行固化的造型方法。它的命名来源于英语</span></p><p><span style="font-family:宋体">皃�/span> Furan No-Bake process.</p><p><span style="font-family:宋体">二、行业原材料及其辅料</span></p><p><span style="font-family:宋体">☄�/span> <span style="font-family:宋体">糟�/span> <span style="font-family:宋体">醆�/span> <span style="font-family: 宋体">：加热时，糠醇对碱稳定，在酸作用下可发生树脂化、�/span></p><p><span style="font-family:宋体">我国生产的糠醇含量都�?/span>99.0%<span style="font-family:宋体">。用于糠醇树脂生产的糟�/span></p><p><span style="font-family:宋体">醇，应符吇�/span>GB/TI4022<span style="font-family:宋体">–�/span>92<span style="font-family:宋体">标准、�/span></p><p><span style="font-family:宋体">☄�/span> <span style="font-family:宋体">甲醛</span> <span style="font-family:宋体">：用于糠醇树脂生产的甲醛，其含量应≥</span>37%<span style="font-family:宋体">，质野�/span></p><p><span style="font-family:宋体">符合</span>GB9009<span style="font-family:宋体">–�/span>88<span style="font-family:宋体">的要求、�/span></p><p><span style="font-family:宋体">☄�/span> <span style="font-family:宋体">尿素</span> <span style="font-family:宋体">：尿素溶液呈弱碱性，与酸作用生成盐，有水解作用、�/span></p><p><span style="font-family:宋体">在高温下尿素可进行缩合反应，生成缩二脲、缩三脲咋�/span></p><p><span style="font-family:宋体">三聚氰酸。用于糠醇树脂生产的尿素库�/span> <span style="font-family:宋体">纯净，无杂质＋�/span></p><p><span style="font-family:宋体">氮含量应�?/span>46%<span style="font-family:宋体">，质量符吇�/span>GB2440-81<span style="font-family:宋体">的要求、�/span></p><p><span style="font-family:宋体">☄�/span> <span style="font-family:宋体">固化剁�/span></p><p>(1)<span style="font-family:宋体">固化剂的种类</span>:<span style="font-family:宋体">自硬呋喃树脂砂以酸作为固化剂。常�?/span></p><p><span style="font-family:宋体">的有机酸固化剂有苯磺酸、对甲苯磺酸、二甲苯磺酸等，旟�/span></p><p><span style="font-family:宋体">机酸固化剂有磷酸、硫酸乙酯等、�/span></p><p>(2) <span style="font-family:宋体">固化剂的选用</span>:<span style="font-family:宋体">由于磺酸类固化剂易于分解，树脂砂皃�/span></p><p><span style="font-family:宋体">溃散性和旧砂再生性能都好，而磷酸类固化剂不易分解，溂�/span></p><p><span style="font-family:宋体">散性相对较差，因此普遍采用有机磺酸类固化剂。它是呋喂�/span></p><p><span style="font-family:宋体">自硬树脂、酚醛改性呋喃自硬树脂、酚醛自硬树脂的通用囹�/span></p><p><span style="font-family:宋体">化剂、�/span></p><p><span style="font-family:宋体">三、行业原材料及其辅料添加比例以及作用</span></p><p><span style="font-family:宋体">名称</span> <span style="font-family:宋体">加入量（质量分数（�/span>% <span style="font-family:宋体">作用</span></p><p>1 <span style="font-family:宋体">硅烷</span> 0.2~0.4 <span style="font-family:宋体">偶联剂，提高强度降低树脂加入野�/span></p><p>2 <span style="font-family:宋体">氧化铁粉</span> 1~1.5 <span style="font-family:宋体">防冲码�/span></p><p>3 <span style="font-family:宋体">氧化铁粉</span> 3~5 <span style="font-family:宋体">防止气孔</span></p><p>4 <span style="font-family:宋体">甘油</span> 0.2~0.4 <span style="font-family:宋体">增加砂型（芯）韧�?/span></p><p>5 <span style="font-family:宋体">苯二甲酸二丁�?/span> <span style="font-family:宋体">�?/span>0.2 <span style="font-family:宋体">增加砂型（芯）韧�?/span></p><p>6 <span style="font-family:宋体">邻苯二甲酸二丁酯</span> <span style="font-family: 宋体">�?/span>0.2 <span style="font-family:宋体">增加砂型（芯）韧�?/span></p><p><span style="font-family:宋体">四、加工设备及其加工工艹�/span></p><p><span style="font-family:宋体">★加工设备：甲醛和糠醇高位计量罐各一个，应防腐；反应</span></p><p><span style="font-family:宋体">釜一个，应防腐；冷凝器一个；水贮罐一个；缓冲罐一</span></p><p><span style="font-family:宋体">个；真空泵一台、�/span></p><p><span style="font-family:宋体">★加工工艺：甲醛→搅拌下加入尿素→并加总量</span>1/4<span style="font-family:宋体">的糠醆�/span></p><p><span style="font-family:宋体">→开蒸汽加热→氢氧化钠溶液调</span>pH<span style="font-family:宋体">值→升温臲�/span>98<span style="font-family:宋体">℃左史�/span></p><p><span style="font-family:宋体">→见到回流液开始计时间＋�/span>15 min<span style="font-family:宋体">即可，然后闭汽降温，</span></p><p><span style="font-family:宋体">开冷水降温→当温度降至</span> 60<span style="font-family:宋体">℃时</span> <span style="font-family:宋体">，将余下皃�/span>3/4<span style="font-family:宋体">糠醇�?/span></p><p><span style="font-family:宋体">真空抽入釜中→再用稀醋酸谂�/span>pH<span style="font-family:宋体">倻�/span>6.5 <span style="font-family:宋体">左右</span>(6.5<span style="font-family:宋体">±</span>0.2)<span style="font-family:宋体">↑�/span></p><p><span style="font-family:宋体">真空脱水→样浊�/span>pH<span style="font-family:宋体">值不小于</span>6.5<span style="font-family:宋体">即可</span></p><p><span style="font-family:宋体">五、产品的性能要求</span></p><p><span style="font-family:宋体">☄�/span> <span style="font-family:宋体">☄�/span> <span style="font-family:宋体">制备</span> <span style="font-family: 宋体">检测样坖�/span></p><p>1<span style="font-family:宋体">、仪器和设备</span> a<span style="font-family:宋体">－�/span>SWY<span style="font-family:宋体">型液压强度试验机：�/span> b<span style="font-family:宋体">－�/span>NRJ-411<span style="font-family:宋体">型水泥胶砂搅拌机，容野�/span>3kg<span style="font-family:宋体">：�/span></p><p>c<span style="font-family:宋体">．‛�/span>8<span style="font-family:宋体">”字形标准试样样盒；</span>d<span style="font-family:宋体">．台秤，</span>10kg<span style="font-family:宋体">：�/span></p><p>e<span style="font-family:宋体">．天平，</span>500g<span style="font-family:宋体">，感野�/span>0<span style="font-family:宋体">－�/span>5g<span style="font-family:宋体">：�/span>100g<span style="font-family:宋体">，感野�/span>0<span style="font-family:宋体">－�/span>1g<span style="font-family:宋体">各一台；</span> f<span style="font-family:宋体">．毛发式湿度计、�/span></p><p>2<span style="font-family:宋体">、药品和材料</span> a<span style="font-family:宋体">．标准砂，规格符吇�/span>ZBJ31006<span style="font-family:宋体">的规定；</span> b<span style="font-family:宋体">．磺酸类固化剂、�/span></p><p>3<span style="font-family:宋体">、试验条件：砂温</span>20<span style="font-family:宋体">℃．室温</span>20<span style="font-family:宋体">℃，相对湿度</span>50<span style="font-family:宋体">＄�/span></p><p>4<span style="font-family:宋体">、测定程庎�/span></p><p>a<span style="font-family:宋体">．混合料的配制：取标准砂</span>1000g<span style="font-family:宋体">，放入胶砂搅拌机里，开动搅拌后立即加入</span>7<span style="font-family:宋体">－�/span>5<span style="font-family:宋体">克固化剂，搅拋�/span></p><p>lmin<span style="font-family:宋体">，加入树脁�/span>15g<span style="font-family:宋体">，搅拋�/span>lmin<span style="font-family:宋体">后出料、�/span></p><p>b<span style="font-family:宋体">．制样：将上述混合料到入‛�/span>8<span style="font-family:宋体">”字形样盒中，手工成型刮平，放在芯板上，打开样盒，成型完毕，</span></p><p><span style="font-family:宋体">每组扒�/span>5<span style="font-family:宋体">个试样，试样重量</span>67<span style="font-family:宋体">圞�/span>1g<span style="font-family:宋体">，试样应在混砂完成后</span>10min<span style="font-family:宋体">之内成型完毕－�/span></p><p>c<span style="font-family:宋体">．放置硬化：将已打好的试样在规定的试验条件下自然硬化</span>24h<span style="font-family:宋体">－�/span></p><p>d<span style="font-family:宋体">．工艺试样抗拉强度的测定：按要求测定</span>24h<span style="font-family:宋体">的强度，试样放在强度试验机夹具中，并使夹具中四个</span></p><p><span style="font-family:宋体">滚柱的平面贴在试样腰部，转动手轮逐渐加载，直至试样断裂，其抗拉强度值可直接从压力表�?/span></p><p><span style="font-family:宋体">读出－�/span></p><p>5<span style="font-family:宋体">、结果计算：测定</span>5<span style="font-family:宋体">个试样强度值，然后去掉大值和小值，将剩下的三个数值取平均值作为试样强</span></p><p><span style="font-family:宋体">度值、�/span></p><p>6<span style="font-family:宋体">、允许差：三个数值中任何一个数值于平均值相差不超过</span>10<span style="font-family:宋体">－�/span>0<span style="font-family:宋体">％，如果超过挈�/span>4<span style="font-family:宋体">－�/span>6<span style="font-family:宋体">－�/span>4<span style="font-family:宋体">层次开始重�?/span></p><p><span style="font-family:宋体">试验、�/span></p><p><span style="font-family:宋体">六�?/span>602<span style="font-family:宋体">在该行业推广的优缺点及注意事顸�/span></p><p><span style="font-family:宋体">☄�/span> <span style="font-family:宋体">☄�/span> <span style="font-family:宋体">注意</span> <span style="font-family: 宋体">事项</span></p><p>Ø <span style="font-family:宋体">添加量：</span>2<span style="font-family:宋体">�?/span>-4<span style="font-family:宋体">�?/span></p><p>Ø <span style="font-family:宋体">添加方式：在反应釜中直接添加，或在树脂使用时淺�/span></p><p>Ø <span style="font-family:宋体">混合均匀</span></p><p>Ø <span style="font-family:宋体">添加名�/span>PH<span style="font-family:宋体">值要适当调整</span></p><p>Ø <span style="font-family:宋体">在高温、湿度较大环境时，加入硅烷偶联剂尤为必要</span></p><p><span style="font-family:宋体"><img src="//www.znpla.com/img1/img/daily/2020/08/11/175909_368691_procont.jpg" title="175909_368691_procont.jpg" alt="hzhg (31).jpg"/></span></p><p><span style="font-family:宋体">济南环正化工有限公司成立亍�/span>2009<span style="font-family:宋体">年，是一家以有机硅产品为主体，集科研、生产、贸易于一体的高科技民营企业。公司以科研院所雄厚的技术和管理力量为依托，聚集了一批具有良好专业素质人才，本公司主要从事有机硅材料，主要产品有硅烷偶联剁�/span>KH550 <span style="font-family:宋体">�?/span>KH-402<span style="font-family:宋体">�?/span>KH-552<span style="font-family:宋体">�?/span>KH-560<span style="font-family:宋体">�?/span>KH-570<span style="font-family:宋体">�?/span>KH-580<span style="font-family:宋体">�?/span>KH-590<span style="font-family:宋体">�?/span>KH-602<span style="font-family:宋体">�?/span>KH-792<span 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