CN105419656A - 一种新型防水果袋胶及其制备方法 - Google Patents
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Abstract
本发明涉及胶黏剂技术领域，具体涉及一种新型防水果袋胶及其制备方法。由以下重量份的组分合成：水1550份，聚乙烯醇80份，丙烯酸丁酯70份，醋酸乙烯35份，2A1阴离子乳化剂3份，丙烯酸5.2份，过硫酸铵引发剂2份，玉米淀粉150份，有机硅消泡剂1.5份，与现有技术相比，本发明对育果袋涂蜡层有较强浸润疏离作用，具有粘力强、抗水性好、耐老化、耐雨淋的特点，且造价低廉，环保无污染。
Description
技术领域
本发明涉及胶黏剂技术领域，具体涉及一种新型防水果袋胶及其制备方法。
背景技术
随着人们生活水平的提高，人们对水果的要求转向高品质和无公害化（即所谓绿色水果），市售无公害水果价格明显高于普通水果，而无公害水果的生产取决于是否应用水果套袋技术。而果袋的材质相较于塑料薄膜袋以纸基质的为佳，因其具有一定的透气性。但是为了防止雨水和农药雾滴的渗透，一般在纸基质的一面涂覆一层蜡质，涂覆蜡质后的育果袋在使用现有的黏合剂进行粘合后，在遇到雨水和农药雾滴的浸润后很容易开胶。为了适应这种情况，需要开发一种新型防水果袋胶，目前比较典型的防水果袋胶的配方【重量比】是：聚乙烯醇15，水200，甲醛1.5～7.5，盐酸适量，乙醛1.5～4，氢氧化钠适量。用乙醛替代部分甲醛与聚乙烯醇缩合，进行结构改性，通过增加缩合物侧链上的碳原子数，增大憎水性，并以此为主体材料，经羧基丁苯乳胶及无机抗水剂碳酸铵锆的共混改性，制得抗水涂布胶。操作步骤：在安装有温度计和搅拌器的三口烧瓶中加入水和聚乙烯醇，在搅拌的同时用水浴升温至90~C使聚乙烯醇完全溶解。加盐酸调pH值为2～2.5;在85～90~C加入混合醛溶液，恒温搅拌约60rain，至胶液出现白色为反应终点。用氢氧化钠溶液调pH值为7～7.5，降至室温即可。但由于其成分中有甲醛组分的存在，甲醛是一种致癌物，具有毒性和刺激性的气味，对操作人员甚至环境构成一定的安全威胁，并且未反应完全的甲醛残留于胶黏剂中会对果品造成污染。
发明内容
本发明的目的是针对现有果袋胶存在的非环保的缺陷，公开一种新型防水果袋胶及其制备方法，这种果袋胶还可应用于粘结纸盒、纸箱、鞋盒、纺织品。
这种新型防水果袋胶，由以下重量份的组分合成：
水1550份，聚乙烯醇80份，丙烯酸丁酯70份，醋酸乙烯35份，2A1阴离子乳化剂3份，丙烯酸5.2份，过硫酸铵引发剂2份，玉米淀粉150份，有机硅消泡剂1.5份，硅烷浸渍剂2份。
这种新型防水果袋胶的制备方法，包含如下步骤：
a)玉米淀粉中加入150份水混合形成糊状备用；
b)将醋酸乙烯、丙烯酸丁酯、2A1阴离子乳化剂、丙烯酸、过硫酸铵引发剂加入乳化釜中高速乳化1小时，乳化液备用；
c)反应釜中加入剩余的水预热到65℃-75℃时加入聚乙烯醇，逐步升温90℃-93℃时保温1小时后降温，在降到60℃时加入步骤a)制得的玉米淀粉糊；
d)反应釜再次升温，温度达到90℃时滴加步骤b)制得的乳化液，2-3小时内滴定，在90℃保温1小时，降到60℃时加入有机硅消泡剂、硅烷浸渍剂；
e)继续降温，在降到45℃以下时过80目滤网放料即可。
本发明制备的这种新型防水果袋胶不仅应用于育果袋，还可应用到粘结各种纸箱、纸盒、礼品箱、鞋盒、木材、布料、皮革以及作为室内外装饰的腻子粉粘结剂。
与现有技术相比，本发明对育果袋涂蜡层有较强浸润疏离作用，具有粘力强、抗水性好、耐老化、耐雨淋的特点，且造价低廉，环保无污染。
具体实施方式
一种新型防水果袋胶的制备方法，包含如下步骤：
a)150份玉米淀粉中加入150份水混合形成糊状备用；
b)将35份醋酸乙烯、70份丙烯酸丁酯、3份2A1阴离子乳化剂、5.2丙烯酸、2份过硫酸铵引发剂加入乳化釜中高速乳化1小时，乳化液备用；
c)反应釜中加入剩余的1400份水预热到65℃-75℃时加入80份聚乙烯醇，逐步升温90℃-93℃时保温1小时后降温，在降到60℃时加入步骤a)制得的玉米淀粉糊；
d)反应釜再次升温，温度达到90℃时滴加步骤b)制得的乳化液，2-3小时内滴定，在90℃保温1小时，降到60℃时加入1.5份有机硅消泡剂、2份硅烷浸渍剂；
e)继续降温，在降到45℃以下时过80目滤网放料即可。
Claims (6)
1.一种新型防水果袋胶，其特征在于由以下重量份的组分合成：
水1550份，聚乙烯醇80份，丙烯酸丁酯70份，醋酸乙烯35份，2A1阴离子乳化剂3份，丙烯酸5.2份，过硫酸铵引发剂2份，玉米淀粉150份，有机硅消泡剂1.5份，硅烷浸洗剂2份。
2.权利要求1所述的一种新型防水果袋胶的制备方法，其特征在于包含如下步骤：
a)玉米淀粉中加入150份水混合形成糊状备用；
b)将醋酸乙烯、丙烯酸丁酯、2A1阴离子乳化剂、丙烯酸、过硫酸铵引发剂加入乳化釜中高速乳化1小时，乳化液备用；
c)反应釜中加入剩余的水预热到65℃-75℃时加入聚乙烯醇，逐步升温90℃-93℃时保温1小时后降温，在降到60℃时加入步骤a)制得的玉米淀粉糊；
d)反应釜再次升温，温度达到90℃时滴加步骤b)制得的乳化液，2-3小时内滴定，在90℃保温1小时，降到60℃时加入有机硅消泡剂、硅烷浸洗剂；
e)继续降温，在降到45℃以下时过80目滤网放料即可。
3.权利要求1所述的一种新型防水果袋胶或权利要求2所述的一种新型防水果袋胶的制备方法在纸箱、纸盒粘合中的应用。
4.权利要求1所述的一种新型防水果袋胶或权利要求2所述的一种新型防水果袋胶的制备方法在木材粘合中的应用。
5.权利要求1所述的一种新型防水果袋胶或权利要求2所述的一种新型防水果袋胶的制备方法在墙体腻子中的应用。
6.权利要求1所述的一种新型防水果袋胶或权利要求2所述的一种新型防水果袋胶的制备方法在布料、皮革、人造革粘结中的应用。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11401661B2 (en) | 2017-11-14 | 2022-08-02 | J & J Green Paper, Inc. | Recyclable composition for waterproofing paper utilizing a plant derived wax, pellets of the composition, recyclable waterproof paper laminate including the composition, recyclable hot beverage cup including the laminate, pod for making hot beverages including the laminate, and drinking straw including the laminate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031078A (zh) * | 2010-12-01 | 2011-04-27 | 江南大学 | 一种淀粉基木材胶粘剂及其制备方法和应用 |
| CN102559108A (zh) * | 2012-01-17 | 2012-07-11 | 合肥工业大学 | 一种高初粘力耐水的淀粉胶粘剂的制备方法 |
| CN102585741A (zh) * | 2012-02-16 | 2012-07-18 | 江南大学 | 一种通过乳液聚合制备木材用淀粉胶粘剂的方法 |
| CN104673141A (zh) * | 2013-11-29 | 2015-06-03 | 青岛水世界环保科技有限公司 | 用于环保纸袋的复合胶粘剂 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031078A (zh) * | 2010-12-01 | 2011-04-27 | 江南大学 | 一种淀粉基木材胶粘剂及其制备方法和应用 |
| CN102559108A (zh) * | 2012-01-17 | 2012-07-11 | 合肥工业大学 | 一种高初粘力耐水的淀粉胶粘剂的制备方法 |
| CN102585741A (zh) * | 2012-02-16 | 2012-07-18 | 江南大学 | 一种通过乳液聚合制备木材用淀粉胶粘剂的方法 |
| CN104673141A (zh) * | 2013-11-29 | 2015-06-03 | 青岛水世界环保科技有限公司 | 用于环保纸袋的复合胶粘剂 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11401661B2 (en) | 2017-11-14 | 2022-08-02 | J & J Green Paper, Inc. | Recyclable composition for waterproofing paper utilizing a plant derived wax, pellets of the composition, recyclable waterproof paper laminate including the composition, recyclable hot beverage cup including the laminate, pod for making hot beverages including the laminate, and drinking straw including the laminate |
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