The invention discloses a powdery additive for an alcohol based casting coating and a method for its preparation and use. Its raw materials include the following components and their percentage of weight: lithium based bentonite: 4 to 7%; sodium bentonite: 59 to 64%; calcium bentonite: 4 to 6%; maleic rosin: 9 to 11%; phenolic resin: 2 to 4%; low viscosity polyethylene Alcohol butyral: 8 to 10%; high viscosity polyvinyl butyral: 1 ~ 3%; expanded graphite: 2.5 ~ 4%; Penetrant: 0.5 ~ 2%. The auxiliaries of the invention have multiple functions such as suspension, bonding, thickening and so on. Only a qualified paint can be made in one step by mixing the additives in proportion to the refractory aggregate. The obtained coatings not only meet the qualified performance indexes of the traditional alcohol based coatings, but also have excellent use effect, and the quality of the alcohol based casting coatings is raised and the quality of the coatings is higher. The preparation difficulty of alcohol based casting coating has been reduced, and unexpected results have been achieved.
【技术实现步骤摘要】
醇基铸造涂料用粉状助剂及其制备和使用方法
本专利技术涉及砂型铸造涂料,具体地指一种醇基铸造涂料用粉状助剂及其制备和使用方法。
技术介绍
目前,醇基铸造涂料的制备,通常需先将不同的多种粉状材料,如:树脂、膨润土各自预制成液体状态,然后再按一定比例将不同助剂与耐火粉料混合,预搅拌,然后进混碾机或胶体磨或球磨机制备成涂料。现有醇基铸造涂料制备工序多,制备设备类型多,容易出错,涂料质量难以得到保证。
技术实现思路
本专利技术的目的就是要提供一种醇基铸造涂料用粉状助剂及其制备和使用方法,该助剂提高了醇基铸造涂料质量,且大幅降低了醇基铸造涂料的制备难度。为实现上述目的,本专利技术采用的技术方案是:一种醇基铸造涂料用粉状助剂,其原料包括以下组分及其重量百分比:锂基膨润土:4~7%;钠基膨润土:59~64%;钙基膨润土:4~6%;马来松香:9~11%;酚醛树脂:2~4%;低粘度聚乙烯醇缩丁醛:8~10%;高粘度聚乙烯醇缩丁醛:1~3%;膨胀石墨:2.5~4%;渗透剂:0.5~2%。进一步地,其原料包括以下组分及其重量百分比:锂基膨润土:4~6%;钠基膨润土:60~64%;钙基膨润土:4~6%;马来松香:9~11%;酚醛树脂:2~4%;低粘度聚乙烯醇缩丁醛:8~10%;高粘度聚乙烯醇缩丁醛:1~3%;膨胀石墨:2.5~4%;渗透剂:0.5~2%。进一步地,所述膨胀石墨的粒度为800~1000目。进一步地,所述渗透剂为粉状,粒度为800~1000目。进一步地,所述钠基膨润土的粒度为500~700目。进一步地,所述聚乙烯醇缩丁醛为低粘度聚乙烯醇缩丁醛,粘度为3~13秒,粒度为500 ...
【技术保护点】
1.一种醇基铸造涂料用粉状助剂,其特征在于:其原料包括以下组分及其重量百分比:锂基膨润土:4~7%;钠基膨润土:59~64%;钙基膨润土:4~6%;马来松香:9~11%;酚醛树脂:2~4%;低粘度聚乙烯醇缩丁醛:8~10%;高粘度聚乙烯醇缩丁醛:1~3%;膨胀石墨:2.5~4%;渗透剂:0.5~2%。
【技术特征摘要】
1.一种醇基铸造涂料用粉状助剂,其特征在于:其原料包括以下组分及其重量百分比:锂基膨润土:4~7%;钠基膨润土:59~64%;钙基膨润土:4~6%;马来松香:9~11%;酚醛树脂:2~4%;低粘度聚乙烯醇缩丁醛:8~10%;高粘度聚乙烯醇缩丁醛:1~3%;膨胀石墨:2.5~4%;渗透剂:0.5~2%。2.根据权利要求1所述的醇基铸造涂料用粉状助剂,其特征在于:其原料包括以下组分及其重量百分比:锂基膨润土:4~6%;钠基膨润土:60~64%;钙基膨润土:4~6%;马来松香:9~11%;酚醛树脂:2~4%;低粘度聚乙烯醇缩丁醛:8~10%;高粘度聚乙烯醇缩丁醛:1~3%;膨胀石墨:2.5~4%;渗透剂:0.5~2%。3.根据权利要求1或2所述的醇基铸造涂料用粉状助剂,其特征在于:所述膨胀石墨的粒度为800~1000目。4.根据权利要求1或2所述的醇基铸造涂料用粉状助剂,其特征在于:所述渗透剂为粉状,粒度为800~1000目。5.根据权利要求1或2所述的醇基铸造涂料用粉状助剂,其特征在于:所述钠基膨润土的粒度为500~700目。6.根据权利要求1或2所述...
【专利技术属性】
技术研发人员:张友寿,周磊,夏露,张茜,黄晋,
申请(专利权)人:湖北工业大学,
类型:发明
国别省市:湖北,42
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