CN115558392B - 一种铝框镜及组装工艺 - Google Patents

一种铝框镜及组装工艺 Download PDF

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CN115558392B
CN115558392B CN202211173362.1A CN202211173362A CN115558392B CN 115558392 B CN115558392 B CN 115558392B CN 202211173362 A CN202211173362 A CN 202211173362A CN 115558392 B CN115558392 B CN 115558392B
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aluminum frame
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潘晓冬
陈泱光
朱军
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Jiangsu Tonda Furniture Co ltd
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Abstract

本发明涉及铝框镜技术领域;具体为一种铝框镜及组装工艺。本发明通过环氧树脂和纳米材料合成多功能水性聚氨酯涂料,并将其应用于铝框镜的组装工艺中,在保护铝镜和铝框的同时,避免了VOCs的排放,保证了生产过程中绿色环保、无毒无害。利用环氧树脂上的‑OH与二异氰酸酯上的‑NCO基团反应,引入了环氧基团;用溶胶‑凝胶法制备二氧化钛和二氧化硅的纳米复合材料,银离子改性后作为加工助剂与水性聚氨酯涂料共混,得到多种功能水性聚氨酯涂料。其中,环氧基团能够提高稳定性、耐腐蚀性,银离子改性后的二氧化钛和二氧化硅复合材料作为加工助剂,强化了水性聚氨酯涂料的抗菌、防水、耐磨损等方面的性能,从而更好地保护铝镜和铝框。

Description

一种铝框镜及组装工艺
技术领域
本发明涉及镜子制备工艺领域,具体为一种铝框镜及组装工艺。
背景技术
玻璃镜的生产工艺是先在镜面上溅镀一层金属反射层,然后再用镜框对镜体进行保护。常见的玻璃镜子分为银镜和铝镜两种。尽管银镜具有更高的镜面反射率与更长的使用寿命,但是价格较高;相比之下,铝镜的生产工艺简单,成本低,价格亲民,受到消费者喜爱,因而有较大的市场占有率。同样,具有固定镜面、保护镜体的镜框一般采用金属合金制成,而铝合金具有密度低、力学性能佳、加工性能好、无毒、易回收、及抗腐蚀性能优良等特点备受关注。
为了保护铝镜、保证美观,通常情况下会在镜框和镜子的金属反射层上涂覆一层化学涂料形成保护层,从而防止镜面和镜框遭受化学腐蚀和物理磨损。其中,银镜的镜背涂料较为常见,一般含有的红丹、氰胺锌等防腐蚀性颜料会生成碱性盐类,而金属铝极易生成致密的氧化铝钝化层,且该氧化铝钝化层能与碱性介质反应,因而使用银镜的镜背涂料会对铝镜造成腐蚀加剧。此外,随着社会发展,人们的环保观念、消费观念和健康观念不断升级,绿色、安全、健康的产品日益受到社会的关注。使用传统的溶剂型油漆由于VOCs的排放量大,不仅在生产和使用过程中的会对人体健康造成伤害,长期甚至会引发重大疾病,同时也会大气环境的污染。因此非常有必要发明一种铝框镜及组装工艺。
发明内容
本发明的目的在于提供一种铝框镜及组装工艺,以解决上述背景技术中提出的问题。
为了解决上述技术问题,本发明提供如下技术方案:一种铝框镜及组装工艺,包括以下步骤:
步骤1:分别对多元醇和二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将多元醇置于反应器中,在70℃下以1000~1200rpm的转速进行搅拌;氮气保护下,将二异氰酸酯和亲水扩链剂加入反应器中,搅拌10min;二月桂酸二丁基锡作为催化剂,加入环氧树脂,将搅拌速度提升至1500~2000rpm,反应3~4h;保持转速加入前期扩链剂继续反应2~3h;降温后得到聚氨酯预聚体,30~35℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:将钛酸酯化合物与纯水混合,加入一定量的硅酸酯化合物得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至2.0~3.0,静置2h后;在70~80℃下水浴加热1~1.5h,过滤、洗涤、烘干后,在400℃下焙烧4h制得二氧化钛和二氧化硅的复合物;
S2:将二氧化钛和二氧化硅的复合物放置在去离子水中,超声分散30min,加入硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至3~4,水浴升温至60~70℃,搅拌1~1.5h,取出、过滤、干燥后,600℃下煅烧1~2h,得到加工助剂;
步骤3:将加工助剂、三乙胺与聚氨酯预聚体混合,在2500~3000rpm的转速下搅拌30min;加入后期扩链剂和纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
步骤1中,所述聚氨酯预聚体中各组分含量,按重量计,14~30份多元醇、10~28份二异氰酸酯、1.5~3份亲水扩链剂、2~4份环氧树脂、0.3~0.5份二月桂酸二丁基锡、1.6~2份前期扩链剂。
进一步的,所述多元醇为聚乙二醇、聚四氢呋喃醚二醇、聚氧乙烯醚二醇、聚氧丙烯醚二醇中的任一种;所述二异氰酸酯为甲苯二异氰酸酯、异氟尔酮二异氰酸酯、六亚甲基二异氰酸酯、赖氨酸二异氰酸酯、三甲硅烷基异氰酸酯中的任一种;所述亲水扩链剂为2,2-二羟甲基丙酸、二羟基半酯、乙二胺基乙磺酸钠中的任一种;所述环氧树脂为E-44、E-51中的任一种;所述前期扩链剂为乙二胺、乙二醇、丙二醇、1,4-丁二醇、二乙醇胺、三乙醇胺、甲基二乙醇胺中的任一种。
S1中,所述溶液A中各组分含量,按重量计,3~5份钛酸酯化合物、6~9份硅酸酯化合物、15~25份纯水。
进一步的,所述钛酸酯化合物为钛酸四乙酯、钛酸四异丙酯、四叔丁基钛酸酯中的任一种;所述硅酸酯化合物为正硅酸甲酯、正硅酸乙酯、正硅酸丙酯、硅酸异丙酯、正硅酸丁酯中的任一种。
S2中,所述溶液B中各组分含量,按重量计,10~12份二氧化钛和二氧化硅的复合物、0.8~1份硝酸银。
步骤3中,所述多功能水性聚氨酯涂料中各组分含量,按重量计,3~5份加工助剂、0.2~0.8份三乙胺、35~46份聚氨酯预聚体、3~4.8份后期扩链剂、120~150份纯水。
进一步的,所述后期扩链剂为乙二胺、乙二醇、丙二醇、1,4-丁二醇、二乙醇胺、三乙醇胺、甲基二乙醇胺中的任一种。
与现有技术相比,本发明所达到的有益效果是:本发明结合两种方法对水性聚氨酯涂料进行改性,并应用于铝框镜的组装工艺中,减少VOCs的排放。首先利用环氧树脂上的-OH与二异氰酸酯上的-NCO基团反应,在生成氨基甲酸酯基的同时引入了环氧基团;用溶胶-凝胶法制备二氧化钛和二氧化硅的纳米复合材料后,银离子改性后作为加工助剂共混,得到多种功能水性聚氨酯涂料。其中,环氧基团能够提高稳定性、耐腐蚀性,银离子改性后的二氧化钛和二氧化硅复合材料作为加工助剂,强化抗菌、防水、耐磨损等方面的效果,从而能够更好地保护铝框和铝镜。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
以下实施例中,主要材料来源如下:聚乙二醇1000来自海安石化工厂、异氟尔酮二异氰酸酯来自鑫盛化工、2,2-二羟甲基丙酸来自凯米科、环氧树脂E-44来自品华化工、二月桂酸二丁基锡来自硅宝化工、1,4-丁二醇来自泽平科技、钛酸四乙酯来自道夫凯特、正硅酸丁酯来自丰泰威远科技、硝酸来自众诚化工、硝酸银来自麦克林。
实施例1:
步骤1:分别对14份聚乙二醇1000和10份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1000rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和1.5份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入2份环氧树脂E-44和0.3份二月桂酸二丁基锡,将搅拌速度提升至1500rpm,反应3h;保持转速加入1.6份1,4-丁二醇,继续反应2h;降温后得到聚氨酯预聚体,30℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:将3份钛酸四乙酯与15份纯水混合,加入6份正硅酸丁酯得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至2.0,静置2h后;在70℃下水浴加热1h,过滤、洗涤、烘干后,在400℃下焙烧4h制得二氧化钛和二氧化硅的复合物;
S2:将10份二氧化钛和二氧化硅的复合物放置在去离子水中,超声分散30min,加入0.8份硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至3,水浴升温至60℃,搅拌1h,取出、过滤、干燥后,600℃下煅烧1h,得到加工助剂;
步骤3:将3份加工助剂、0.2份三乙胺与35份聚氨酯预聚体混合,在2500rpm的转速下搅拌30min;加入3份乙二胺和120份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
实施例2:
步骤1:分别对26份聚乙二醇1000和14份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1100rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和2.3份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入3.6份环氧树脂E-44和0.38份二月桂酸二丁基锡,将搅拌速度提升至1700rpm,反应3.5h;保持转速加入1.7份1,4-丁二醇,继续反应2.5h;降温后得到聚氨酯预聚体,32℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:将4份钛酸四乙酯与17.8份纯水混合,加入8份正硅酸丁酯得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至2.8,静置2h后;在75℃下水浴加热1.3h,过滤、洗涤、烘干后,在400℃下焙烧4h制得二氧化钛和二氧化硅的复合物;
S2:将11份二氧化钛和二氧化硅的复合物放置在去离子水中,超声分散30min,加入0.9份硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至3.5,水浴升温至65℃,搅拌1.2h,取出、过滤、干燥后,600℃下煅烧1.4h,得到加工助剂;
步骤3:将4.6份加工助剂、0.5份三乙胺与41份聚氨酯预聚体混合,在2700rpm的转速下搅拌30min;加入4.3份乙二胺和140份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
实施例3:
步骤1:分别对30份聚乙二醇1000和28份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1200rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和3份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入4份环氧树脂E-44和0.5份二月桂酸二丁基锡,将搅拌速度提升至2000rpm,反应4h;保持转速加入2份1,4-丁二醇,继续反应3h;降温后得到聚氨酯预聚体,35℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:将5份钛酸四乙酯与20份纯水混合,加入9份正硅酸丁酯得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至3.0,静置2h后;在80℃下水浴加热1.5h,过滤、洗涤、烘干后,在400℃下焙烧4h制得二氧化钛和二氧化硅的复合物;
S2:将12份二氧化钛和二氧化硅的复合物放置在去离子水中,超声分散30min,加入1份硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至4,水浴升温至70℃,搅拌1.5h,取出、过滤、干燥后,600℃下煅烧2h,得到加工助剂;
步骤3:将5份加工助剂、0.8份三乙胺与46份聚氨酯预聚体混合,在3000rpm的转速下搅拌30min;加入4.8份乙二胺和150份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
对比例1:
不使用环氧树脂改性对水性聚氨酯涂料改性。
步骤1:分别对14份聚乙二醇1000和10份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1000rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和1.5份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入1.6份1,4-丁二醇,继续反应2h;降温后得到聚氨酯预聚体,30℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:将3份钛酸四乙酯与15份纯水混合,加入6份正硅酸丁酯得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至2.0,静置2h后;在70℃下水浴加热1h,过滤、洗涤、烘干后,在400℃下焙烧4h制得二氧化钛和二氧化硅的复合物;
S2:将10份二氧化钛和二氧化硅的复合物放置在去离子水中,超声分散30min,加入0.8份硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至3,水浴升温至60℃,搅拌1h,取出、过滤、干燥后,600℃下煅烧1h,得到加工助剂;
步骤3:将3份加工助剂、0.2份三乙胺与35份聚氨酯预聚体混合,在2500rpm的转速下搅拌30min;加入3份乙二胺和120份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,利用皮带把铝镜运送到装配位,将铝材外框拼接在镜子四周进行预装,通过四周气缸夹紧校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑件、清洁打磨后得到铝框镜。
对比例2:
用有机抗菌剂氯苯吡啶代替加工助剂制备水性聚氨酯涂料。
步骤1:分别对26份聚乙二醇1000和14份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1100rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和2.3份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入3.6份环氧树脂E-44和0.38份二月桂酸二丁基锡,将搅拌速度提升至1700rpm,反应3.5h;保持转速加入1.7份1,4-丁二醇,继续反应2.5h;降温后得到聚氨酯预聚体,32℃下水浴恒温备用;
步骤2:将4.6份氯苯吡啶、0.5份三乙胺与41份聚氨酯预聚体混合,在2700rpm的转速下搅拌30min;加入4.3份乙二胺和140份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
对比例3:
加工助剂中不含二氧化硅。
步骤1:分别对30份聚乙二醇1000和28份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1200rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和3份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入4份环氧树脂E-44和0.5份二月桂酸二丁基锡,将搅拌速度提升至2000rpm,反应4h;保持转速加入2份1,4-丁二醇,继续反应3h;降温后得到聚氨酯预聚体,35℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:将5份钛酸四乙酯与15份纯水混合,再用质量浓度为30%的硝酸溶液调节pH值至3.0,静置2h后;在80℃下水浴加热1.5h,过滤、洗涤、烘干后,在400℃下焙烧4h制得纳米二氧化钛粉末;
S2:将12份纳米二氧化钛放置在去离子水中,超声分散30min,加入1份硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至4,水浴升温至60~70℃,搅拌1.5h,取出、过滤、干燥后,600℃下煅烧2h,得到加工助剂;
步骤3:将5份加工助剂、0.8份三乙胺与46份聚氨酯预聚体混合,在3000rpm的转速下搅拌30min;加入4.8份乙二胺和150份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
对比例4:
加工助剂中不含二氧化钛。
步骤1:分别对30份聚乙二醇1000和28份异氟尔酮二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将聚乙二醇置于反应器中,在70℃下以1200rpm的转速进行搅拌;氮气保护下,将异氟尔酮二异氰酸酯和3份2,2-二羟甲基丙酸加入反应器中,搅拌10min;加入4份环氧树脂E-44和0.5份二月桂酸二丁基锡,将搅拌速度提升至2000rpm,反应4h;保持转速加入2份1,4-丁二醇,继续反应3h;降温后得到聚氨酯预聚体,35℃下水浴恒温备用;
步骤2:加工助剂的制备:
S1:向20份纯水中加入9份正硅酸丁酯得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至3.0,静置2h后;在80℃下水浴加热1.5h,过滤、洗涤、烘干后,在400℃下焙烧4h制得纳米二氧化硅粉末;
S2:将12份纳米二氧化硅粉末放置在去离子水中,超声分散30min,加入1份硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至4,水浴升温至70℃,搅拌1.5h,取出、过滤、干燥后,600℃下煅烧2h,得到加工助剂;
步骤3:将5份加工助剂、0.8份三乙胺与46份聚氨酯预聚体混合,在3000rpm的转速下搅拌30min;加入4.8份乙二胺和150份纯水反应30min,得到多功能水性聚氨酯涂料;
步骤4:将多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上,待涂料完全干燥后,将铝材外框拼接在镜子四周,校正产品尺寸的同时把四边角码上螺丝锁紧,再经过固定支撑、清洁打磨后得到铝框镜。
实验:对实施例1~3和对比例1~4的进行性能测试,具体方法如下:
耐水性测试方法:取干燥后的镜片,称重记为W0,放入水中浸泡10h,擦去表面的水后称重记录为W1,吸水率记为
抗菌性测试:选取直径为5cm的镜片,在35℃下放入白色念球菌培养皿中,测试48h后菌落数,求出抗菌率;
耐磨性测试:根据GB/T 6739-2006进行测定,采用铅笔硬度计,以使涂膜破裂型号铅笔的上一号铅笔的硬度为涂膜的硬度;
耐腐蚀性测试方法:根据GB/T 1771-2007测试;
实验结果如下表所示。
实施例 吸水率/% 抗菌性/% 耐磨性能/铅笔硬度 耐盐雾时间/h
实施例1 0.13 95.4 5H铅笔 >1200
实施例2 0.12 96.7 5H铅笔 >1200
实施例3 0.16 94.2 5H铅笔 >1200
对比例1 0.26 / 4H 880
对比例2 0.39 90.6 4H /
对比例3 0.42 90.4 4H /
对比例4 / 46.5 / /
结论:实施例1~3数据表明,用本方法制备的多功能水性聚氨酯涂料干燥时间短,具有良好的耐水性、抗菌性、耐磨性和耐腐蚀性,涂料质地均匀,涂层表面几乎没有气泡,能有效保护铝框镜的镜框和铝镜反射层。以实施例1为参照组,对比例1数据表明,环氧树脂改性后,耐磨性能上升,抗腐蚀能力显著提高。以实施例2为对照组,对比例2数据表明,合成的加工助剂不仅具有抗菌功效,还具有更强的耐磨性和耐水性。以实施例3为对照组,对比例3~4数据表明加工助剂中的二氧化硅与二氧化钛具有协同作用:在对比例3中,二氧化钛能与银离子结合,涂料具有良好的抗菌性能,但耐磨性、耐水性能下降,且由于纳米二氧化钛的比表面积较小,影响在水性聚氨酯中的共混效果,涂层表面可观察到有少量气泡;而在对比例4中,用此方法难以将银离子负载在二氧化硅上,无法发挥出二者优异的抗菌效果。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (6)

1.一种铝框镜,其特征在于:包括铝镜、铝框和多功能水性聚氨酯涂料,其中,铝框拼接在铝镜四周,多功能水性聚氨酯涂料涂覆在铝框表面和铝镜反射层上;所述的多功能水性聚氨酯涂料的制备方法,包括以下步骤:
步骤1:分别对多元醇和二异氰酸酯在120℃下进行真空脱水3h,待降至室温后,将多元醇置于反应器中,在70℃下以1000~1200rpm的转速进行搅拌;氮气保护下,将二异氰酸酯和亲水扩链剂加入反应器中,搅拌10min;二月桂酸二丁基锡作为催化剂,加入环氧树脂,将搅拌速度提升至1500~2000rpm,反应3~4h;保持转速加入前期扩链剂继续反应2~3h;降温后得到聚氨酯预聚体,30~35℃下水浴恒温备用;
聚氨酯预聚体中各组分含量,按重量计,14~30份多元醇、10~28份二异氰酸酯、1.5~3份亲水扩链剂、2~4份环氧树脂、0.3~0.5份二月桂酸二丁基锡、1.6~2份前期扩链剂;
步骤2:加工助剂的制备:
S1:将钛酸酯化合物与纯水混合,加入硅酸酯化合物得到溶液A,再用质量浓度为30%的硝酸溶液调节pH值至2.0~3.0,静置2h后;在70~80℃下水浴加热1~1.5h,过滤、洗涤、烘干后,在400℃下焙烧4h制得二氧化钛和二氧化硅的复合物;
S2:将二氧化钛和二氧化硅的复合物放置在去离子水中,超声分散30min,加入硝酸银,得到溶液B;
S3:向液体B中滴加质量浓度为30%的硝酸溶液,调节pH至3~4,水浴升温至60~70℃,搅拌1~1.5h,取出、过滤、干燥后,煅烧得到加工助剂;
步骤3:将加工助剂、三乙胺与聚氨酯预聚体混合,在2500~3000rpm的转速下搅拌30min;加入后期扩链剂和纯水反应30min,得到多功能水性聚氨酯涂料;多功能水性聚氨酯涂料中各组分含量,按重量计,3~5份加工助剂、0.2~0.8份三乙胺、35~46份聚氨酯预聚体、3~4.8份后期扩链剂、120~150份纯水。
2.根据权利要求1所述的一种铝框镜,其特征在于:步骤1中,所述多元醇为聚乙二醇、聚四氢呋喃醚二醇、聚氧乙烯醚二醇、聚氧丙烯醚二醇中的任一种;所述二异氰酸酯为甲苯二异氰酸酯、异氟尔酮二异氰酸酯、六亚甲基二异氰酸酯、赖氨酸二异氰酸酯、三甲硅烷基异氰酸酯中的任一种;所述亲水扩链剂为2,2-二羟甲基丙酸、二羟基半酯、乙二胺基乙磺酸钠中的任一种;所述环氧树脂为E-44、E-51中的任一种;所述前期扩链剂为乙二胺、乙二醇、丙二醇、1,4-丁二醇、二乙醇胺、三乙醇胺、甲基二乙醇胺中的任一种。
3.根据权利要求1所述的一种铝框镜,其特征在于:S1中,所述溶液A中各组分含量,按重量计,3~5份钛酸酯化合物、6~9份硅酸酯化合物、15~25份纯水;S2中,所述溶液B中各组分含量,按重量计,10~12份二氧化钛和二氧化硅的复合物、0 .8~1份硝酸银。
4.根据权利要求1所述的一种铝框镜,其特征在于:S1中,所述钛酸酯化合物为钛酸四乙酯、钛酸四异丙酯、四叔丁基钛酸酯中的任一种;所述硅酸酯化合物为正硅酸甲酯、正硅酸乙酯、正硅酸丙酯、硅酸异丙酯、正硅酸丁酯中的任一种。
5.根据权利要求1所述的一种铝框镜,其特征在于:所述后期扩链剂为乙二胺、乙二醇、丙二醇、1,4-丁二醇、二乙醇胺、三乙醇胺、甲基二乙醇胺中的任一种。
6.一种如权利要求1~5中任一项所述的铝框镜的组装工艺,其特征在于:包括以下步骤:将多功能水性聚氨酯涂料涂覆在铝框和铝镜表面,待涂料干燥后,经预装、校正、锁紧、固定支撑、清洁打磨后得到铝框镜。
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