CN109401188B - 一种用于抛光的氨基树脂泡沫材料及其制备方法和应用 - Google Patents
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Abstract
本发明公开了一种用于抛光的氨基树脂泡沫材料及其制备方法和应用,包括:氨基树脂树脂50~70份,乳化剂3~7份,磨料30~60份,发泡剂8~15份,固化剂5~10份。本发明的氨基树脂泡沫材料,产品一体成型,在氨基树脂发泡的同时,磨料均匀嵌入泡沫中,可做成电动工具,实现无尘或微尘打磨,磨料利用率高,随泡沫的同步消耗,不断露出新的刀口,且有多层磨料,减少更换电动工具的时间,可以持续作业,可用于精细抛光及余量去除;工艺的固化温度低,周期短,可以连续化生产,自动化程度高,磨削时产生的微屑可生物降解,避免二次污染,环保性能提高。
Description
技术领域
本发明属于发泡材料技术领域,具体涉及一种用于抛光的氨基树脂泡沫材料及其制备方法和应用。
背景技术
涂附磨具(Coated abrasives),就是用粘结剂把磨粒粘附在可挠曲基材上的磨具,是磨具三大系列产品(固结磨具、涂附磨具、超硬磨具)之一,它作为一种实用的磨削加工工具已有百年以上的历史,市场常见抛光涂附磨具产品为砂纸,砂布或者百洁布产品,广泛应用于各类产品的磨削、抛光、修饰,遍及航天、航空、汽车、船舶、机床、化工、建筑、冶金、能源设备等制造行业和木材、玻璃等轻工业。
常规砂纸、砂布生产周期长,包括基材处理,收卷,涂布底胶,植砂,干燥,涂附复胶,干燥,后固化等。产品磨料为单层,磨料利用率低。使用完后需停机更换,耗费加工时间,加工效率低。
现有的氨基树脂泡沫,由于其极低的导热系数、保温性能好,主要用于中央空调系统、轻质保温板、防雾隔热材料、石油化工管道等领域,目前尚未见将氨基树脂发泡材料用于涂附磨具的文献报道。
发明内容
为了克服上述现有技术存在的不足,本发明的首要目的在于提供一种用于抛光的氨基树脂泡沫材料,该材料具有较好的弹性和韧性,可做成电动工具,实现无尘或微尘打磨,磨料利用率高,且有多层磨料,可用于精细抛光及余量去除。
本发明是通过以下技术方案实现的:
一种用于抛光的氨基树脂泡沫材料,按重量份数计,包括以下组分:
氨基树脂 50~70份
乳化剂 3~7份
磨料 30~60份
发泡剂 8~15份
固化剂 5~10份。
本发明所述的氨基树脂为脲醛树脂、三聚氰胺树脂或三聚氰胺改性脲醛树脂中的一种或几种,其可通过市购方式获得,也可通过本领域常规技术制备得到。
优选的,所述磨料为刚玉粉、金刚石粉、氧化铝或碳化硅中的一种或几种;氧化铝和碳化硅具有合适的硬度和韧性,适合用于对产品进行抛光、打磨;优选为氧化铝或碳化硅,粒度范围为150~2000目。
优选的,所述乳化剂为脂肪醇聚氧乙烯醚、聚氧丙烯醚、烷基酚聚氧乙烯醚类(如壬基酚与环氧乙烷的加成物)、聚硅氧烷、聚氧乙烯-聚氧丙烯嵌段共聚物中的一种或几种的混合。
优选的,所述发泡剂为沸点在30-60℃之间的挥发性液体,如氟利昂、氯化烃、石油醚、正戊烷或异戊烷中的一种或几种的混合。
优选的,所述固化剂为有机酸固化剂或无机酸固化剂中的一种或几种,其中,所述有机酸固化剂为草酸、已二酸、苯硝酸、酚硝酸、甲苯磺酸、苯磺酸或石油磺酸中的一种或几种,所述无机酸固化剂为硫酸、盐酸或磷酸中的一种或几种。
根据实际性能需要,本发明的用于抛光的酚醛泡沫材料,按重量份数计,还包括填料5~15份、偶联剂0.1-1份。
所述填料为冰晶石、氟硅酸钠、石墨粉、玻璃微珠、银粉、石墨粉或聚乙烯空心球中的一种或几种;添加这些填料在磨削时相变,带走磨削时产生的热量,可以避免工件烧伤发黑,进一步改善磨削性能。
所述偶联剂为硅烷偶联剂或碳酸酯偶联剂中的一种或几种,如KH550、KH560等。
本发明还提供了上述的用于抛光的氨基树脂泡沫材料的制备方法,包括如下步骤:
将乳化剂加入氨基树脂中,强力搅拌5~10min,搅拌均匀后,缓慢加入磨料,强力搅拌1~5min,搅拌均匀后,再缓慢加入发泡剂,强力搅拌1~5min,搅拌均匀后,再加入固化剂,继续强力搅拌1~5min,最后将搅拌均匀的树脂倒入模具,放入60~70℃的烘箱内,进行发泡,4~5小时后开模取出,即得。
与现有技术相比,本发明具有如下有益效果:
(1) 本发明的氨基树脂泡沫材料,产品一体成型,在氨基树脂树脂发泡的同时,磨料
均匀嵌入泡沫中,可做成电动工具,实现无尘或微尘打磨,磨料利用率高,随泡沫的同步消耗,不断露出新的刀口,且有多层磨料,减少更换电动工具的时间,可以持续作业,可用于精细抛光及余量去除;
(2)本发明产品具有较好的弹性和韧性,不划伤工件;
(3)本发明工艺的固化温度低,周期短,可以连续化生产,自动化程度高, 磨削时产生的微屑可生物降解,避免二次污染,环保性能提高。
具体实施方式
下面给出实施例以对本发明进行具体的描述,但不限于此。
实施例1-8
按表1所示配比,将乳化剂加入氨基树脂中,强力搅拌5~10min,搅拌均匀后,缓慢加入磨料,强力搅拌1~5min,搅拌均匀后,再加入发泡剂,强力搅拌1~5min,搅拌均匀后,再缓慢加入固化剂、填料、偶联剂,继续强力搅拌1~5min,最后将搅拌均匀的树脂倒入模具,放入60~70℃的烘箱内,进行发泡,4~5小时后开模取出,即得氨基树脂泡沫材料,测试其性能,测试结果如表2所示。
对比例1:
按表1所示配比,将氨基树脂、乳化剂、磨料、发泡剂、固化剂、填料、偶联剂混合均匀,强力搅拌1~5min,最后将搅拌均匀的树脂倒入模具,放入60~70℃的烘箱内,进行发泡,4~5小时后开模取出,即得氨基树脂泡沫材料,测试其性能,测试结果如表2所示。
表1各实施例及对比例中各组份的具体配比(重量份)
表2 各实施例和对比例试样的性能测试数据
由表2结果可以看出,与现有的砂布和砂纸比较,本发明的氨基树脂泡沫材料具有较好的弹性和韧性,不划伤工件,工件表面的粗糙度低,磨料利用率高,加工效率高。
由实施例2和对比例1对比可知,对比例1采用一步投料法,磨料无法均匀嵌入泡沫中,产品无法成型。本发明采用分步投料,可使磨料均匀嵌入泡沫中。
Claims (10)
1.一种用于抛光的氨基树脂泡沫材料在涂附磨具中的应用,其特征在于,所述用于抛光的氨基树脂泡沫材料,按重量份数计,包括以下组分:
氨基树脂 50~70份
乳化剂 3~7份
磨料 30~60份
发泡剂 8~15份
固化剂 5~10份。
2.根据权利要求1所述的应用,其特征在于,所述氨基树脂为脲醛树脂或三聚氰胺树脂中的一种或几种。
3.根据权利要求1所述的应用,其特征在于,所述磨料为刚玉粉、金刚石粉、氧化铝或碳化硅中的一种或几种。
4.根据权利要求3所述的应用,其特征在于,所述磨料为为氧化铝或碳化硅,粒度范围为150~2000目。
5.根据权利要求1所述的应用,其特征在于,所述乳化剂为脂肪醇聚氧乙烯醚、聚氧丙烯醚、烷基酚聚氧乙烯醚类、聚硅氧烷、聚氧乙烯-聚氧丙烯嵌段共聚物中的一种或几种的混合。
6.根据权利要求1所述的应用,其特征在于,所述发泡剂为氟利昂、氯化烃、石油醚、正戊烷或异戊烷中的一种或几种的混合。
7.根据权利要求1所述的应用,其特征在于,所述固化剂为有机酸固化剂或无机酸固化剂中的一种或几种,其中,所述有机酸固化剂为草酸、已二酸、苯硝酸、酚硝酸、甲苯磺酸、苯磺酸或石油磺酸中的一种或几种,所述无机酸固化剂为硫酸、盐酸或磷酸中的一种或几种。
8.根据权利要求1所述的应用,其特征在于,所述用于抛光的酚醛泡沫材料,按重量份数计,还包括填料5~15份、偶联剂0.1-1份。
9.根据权利要求8所述的应用,其特征在于,所述填料为冰晶石、氟硅酸钠、石墨粉、玻璃微珠、银粉、石墨粉或聚乙烯空心球中的一种或几种;所述偶联剂为硅烷偶联剂或碳酸酯偶联剂中的一种或几种。
10.根据权利要求1所述的应用,其特征在于,所述用于抛光的氨基树脂泡沫材料的制备方法,包括如下步骤:
将乳化剂加入氨基树脂中,强力搅拌5~10min,搅拌均匀后,缓慢加入磨料,强力搅拌1~5min,搅拌均匀后,再缓慢加入发泡剂,强力搅拌1~5min,搅拌均匀后,再加入固化剂,继续强力搅拌1~5min,最后将搅拌均匀的树脂倒入模具,放入60~70℃的烘箱内,进行发泡,4~5小时后开模取出,即得。
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WO2018095760A1 (en) * | 2016-11-23 | 2018-05-31 | Basf Se | Production of melamine-formaldehyde foams |
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