CN110328935B - 一种夹胶玻璃的加工工艺 - Google Patents
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Abstract
本发明提供了一种夹胶玻璃的加工工艺,包括以下步骤:准备第一玻璃基板、第二玻璃基板,切割、磨边、清洗后待用;准备n个PVB胶片,在每两个PVB胶片之间涂覆一层硅酮胶,然后在硅酮胶上均匀分布无机发泡剂,制得夹胶层;第一玻璃基板、夹胶层、第二玻璃基板依次叠放后置于压合机的模具中压力得到半成品;对半成品的四个边缘进行打磨,将压合后边缘突出的胶料打磨掉,制得夹胶玻璃。本发明提供的夹胶玻璃的加工工艺,利用发泡剂对夹胶层进行发泡,使夹胶层内具备若干纳米级气泡,提高了夹胶玻璃的隔热、隔音性能。
Description
技术领域
本发明涉及玻璃加工领域,具体涉及一种夹胶玻璃的加工工艺。
背景技术
玻璃是非晶无机非金属材料,一般是用多种无机矿物(如石英砂、硼砂、硼酸、重晶石、碳酸钡、石灰石、长石、纯碱等)为主要原料,另外加入少量辅助原料制成的。它的主要成分为二氧化硅和其他氧化物。普通玻璃的化学组成是Na2SiO3、CaSiO3、SiO2或Na2O·CaO·6SiO2等,主要成分是硅酸盐复盐,是一种无规则结构的非晶态固体。
玻璃被普遍应用于门窗领域中,一般为了提高玻璃的安全性,通常在两片玻璃之间增加一层PVB胶片,以达到防止玻璃碎后碎片飞溅的效果。一般的夹胶玻璃的隔热、隔音性能较差,为了提高其隔热、隔音性能,普遍的做法是在PVB片中掺杂氧化铟锡、氧化氟锡、氧化锌铝、氧化铟锑等纳米颗粒,如申请号为201210347219.X的《一种聚乙烯醇缩丁醛透明胶膜及其制备方法》,利用这些纳米材料优异的吸热性能,做成隔热隔音的夹胶玻璃。这样的方式制作夹胶玻璃,制作成本高,制作难度大。
发明内容
针对以上问题,本发明提供一种夹胶玻璃的加工工艺,利用发泡剂对夹胶层进行发泡,使夹胶层内具备若干纳米级气泡,提高了夹胶玻璃的隔热、隔音性能。
为实现上述目的,本发明通过以下技术方案来解决:
一种夹胶玻璃的加工工艺,包括以下步骤:
S1准备第一玻璃基板、第二玻璃基板,切割、磨边、清洗后待用;
S2准备n个PVB胶片,n为大于等于2的整数,在第1个PVB胶片、第2个PVB胶片···第n-1个PVB胶片上端面均涂覆一层硅酮胶,然后在硅酮胶上均匀分布无机发泡剂,将第1个PVB胶片、第2个PVB胶片···第n个PVB胶片依次叠放,制得夹胶层;
S3第一玻璃基板、夹胶层、第二玻璃基板依次叠放后置于压合机的模具中,在温度150~170℃、压力5~7MPa条件下压合17~22min,得到半成品;
S4对半成品的四个边缘进行打磨,将压合后边缘突出的胶料打磨掉,制得夹胶玻璃。
具体的,所述PVB胶片的厚度为0.7~1.2mm,n为5,即所述PVB胶片的数量为5个。
具体的,所述硅酮胶的涂覆厚度小于0.35mm。
具体的,所述无机发泡剂为碳酸盐类发泡剂。
具体的,所述碳酸盐类发泡剂选自碳酸钙、碳酸镁、碳酸氢钠中的一种。
具体的,经过压合后所述第一玻璃基板、第二玻璃基板之间形成发泡夹胶层,所述发泡夹胶层内气泡的平均粒径为220~400nm。
本发明的有益效果是:
本发明提供的夹胶玻璃的加工工艺,将发泡剂夹设于两层PVB胶片之间,热压时发泡剂即可在夹胶层内发泡形成若干纳米气泡,制作成本低,制作难度低,制备得到的夹胶玻璃隔热、隔音性能优异。
具体实施方式
为了能进一步了解本发明的特征、技术手段以及所达到的具体目的、功能,下面结合具体实施方式对本发明作进一步的详细描述。
实施例1
一种夹胶玻璃的加工工艺,包括以下步骤:
S1准备第一玻璃基板、第二玻璃基板,切割、磨边、清洗后待用;
S2准备5个厚度为0.7~1.2mm的PVB胶片,在第1个PVB胶片、第2个PVB胶片、第3个PVB胶片、第4个PVB胶片、第5个PVB胶片上端面均涂覆一层硅酮胶,然后在硅酮胶上均匀分布碳酸氢钠,将第1个PVB胶片、第2个PVB胶片、第3个PVB胶片、第4个PVB胶片、第5个PVB胶片依次叠放,制得夹胶层;
S3第一玻璃基板、夹胶层、第二玻璃基板依次叠放后置于压合机的模具中,在温度150~170℃、压力5~7MPa条件下压合17~22min,得到半成品,热压过程中,PVB胶片在120℃以后会逐渐熔化,融化后碳酸氢钠均匀地填充于多层PVB胶片熔化后的料体中,同时碳酸氢钠在100℃以上会反应而缓慢产生二氧化碳气体,二氧化碳气体填充于夹胶层内形成气泡,经过压合后第一玻璃基板、第二玻璃基板之间形成发泡夹胶层,发泡夹胶层内气泡的平均粒径为220~400nm;
S4对半成品的四个边缘进行打磨,将压合后边缘突出的胶料打磨掉,制得夹胶玻璃。
优选地,硅酮胶用于粘接碳酸氢钠,避免碳酸氢钠在PVB胶片合片过程中掉落,另外,为了避免过厚的硅酮胶影响夹胶玻璃的整体透光性,硅酮胶的涂覆厚度小于0.35mm。
以上所述实施例仅表达了本发明的1种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (5)
1.一种夹胶玻璃的加工工艺,其特征在于,包括以下步骤:
S1准备第一玻璃基板、第二玻璃基板,切割、磨边、清洗后待用;
S2准备5个厚度为0.7~1.2mm的PVB胶片,在5个PVB胶片上端面均涂覆一层硅酮胶,然后在硅酮胶上均匀分布无机发泡剂,将5个PVB胶片依次叠放,制得夹胶层;
S3第一玻璃基板、夹胶层、第二玻璃基板依次叠放后置于压合机的模具中,在温度150~170℃、压力5~7MPa条件下压合17~22min,得到半成品;
S4对半成品的四个边缘进行打磨,将压合后边缘突出的胶料打磨掉,制得夹胶玻璃。
2.根据权利要求1所述的一种夹胶玻璃的加工工艺,其特征在于,所述硅酮胶的涂覆厚度小于0.35mm。
3.根据权利要求1所述的一种夹胶玻璃的加工工艺,其特征在于,所述无机发泡剂为碳酸盐类发泡剂。
4.根据权利要求3所述的一种夹胶玻璃的加工工艺,其特征在于,所述碳酸盐类发泡剂选自碳酸钙、碳酸镁、碳酸氢钠中的一种。
5.根据权利要求1所述的一种夹胶玻璃的加工工艺,其特征在于,经过压合后所述第一玻璃基板、第二玻璃基板之间形成发泡夹胶层,所述发泡夹胶层内气泡的平均粒径为220~400nm。
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CN104944807A (zh) * | 2015-06-02 | 2015-09-30 | 安徽鑫泰玻璃科技有限公司 | 一种夹层玻璃生产工艺 |
CN107031146A (zh) * | 2017-03-23 | 2017-08-11 | 合肥协耀玻璃制品有限公司 | 一种隔音隔热玻璃及制备方法 |
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