CN117124688A - 一种具有多层结构的cpet片材的制备方法及应用 - Google Patents
一种具有多层结构的cpet片材的制备方法及应用 Download PDFInfo
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Abstract
本发明提供了一种具有多层结构的CPET片材的制备方法及应用,包括如下步骤:步骤1是将CPET材料进行挤出成型,得到CPET外层,所述的CPET外层上设有容纳槽;步骤2是将CPET材料进行挤出成型,得到CPET内层;步骤3是将所述的CPET内层放置于所述的CPET外层上方,挤复后得到所述的具有多层结构的CPET片材。本发明所述的具有多层结构的CPET片材的采用改性后的聚醚醚酮支撑体与CPET内层、CPET外层组合来制备片材,改性聚醚醚酮支撑体起到骨架支撑作用,大幅提高了CPET片材整体的机械性能,同时具有优异的耐高温性能。
Description
技术领域
本发明属于化学领域,尤其是涉及一种具有多层结构的CPET片材的制备方法及应用。
背景技术
结晶聚对苯二甲酸乙二醇酯(CPET)无味、无色、无毒,是当今世界公认的最佳食品包装材料。CPET在加热过程中不会释放出任何有害物质和气体,被欧美等国家称之为绿色包装。CPET材料自身具备良好的阻隔性,对食品保鲜、保质功能显著优于其他材料。广泛应用于航空餐食,是烤箱餐盒的常用材料。
结晶聚对苯二甲酸乙二醇酯(CPET)无味、无色、无毒,是当今世界公认的最佳食品包装材料。CPET在加热过程中不会释放出任何有害物质和气体,被欧美等国家称之为绿色包装。CPET材料自身具备良好的阻隔性,对食品保鲜、保质功能显著优于其他材料。广泛应用于航空餐食,是烤箱餐盒的常用材料。
目前市场上的烤箱容器主要以家用烤盘和旅行(航空)用烤盘为主,家用烤盘以铁,钢为材料压铸而成,旅行用烤盘则以铝箔制成。不过,在使用和存放过程中,两者也存在一些基本弱点:铁、钢类烤盘容易生锈,沉重,携带不便;铝箔类烤盘虽然轻便,但容易变形;一次性耐高温烤盘虽然不易变形,但受到碰撞后易碎。
发明内容
有鉴于此,本发明旨在克服现有技术中的缺陷,提出一种具有多层结构的CPET片材的制备方法及应用。
为达到上述目的,本发明的技术方案是这样实现的:
本发明提供一种具有多层结构的CPET片材的制备方法,包括如下步骤:
步骤1是制备CPET外层:将CPET材料进行挤出成型,得到CPET外层,所述的CPET外层上设有容纳槽;
步骤2是制备CPET内层:将CPET材料进行挤出成型,得到CPET内层;
步骤3是先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
进一步,所述的改性聚醚醚酮支撑体经表面处理、包覆增强粘结层后得到。
进一步,所述的步骤1中的改性聚醚醚酮支撑体由包括如下步骤的方法制成:
步骤A是将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
步骤B是将所述的微孔中间体浸泡于增强粘结溶液中,浸泡完成后经烘干得到改性聚醚醚酮支撑体。
进一步,所述的步骤B中的增强粘结溶液为质量比为1:0.1-10的丙烯酸聚合树脂与环氧植物油。
上述丙烯酸聚合树脂由如下步骤的方法制成:
将1g十二烷基硫酸钠加入300mL水中并升温至40℃,滴加0.5g过硫酸铵,30min后开始滴加100g丙烯酸乙酯和0.2g过氧化二异丙苯,保温3h后得到具有网络结构聚合物;降温至50℃,滴加50g醋酸乙烯酯和0.5g聚丙二醇,缓慢升温到85℃后,滴加0.5g过硫酸钾,滴加时间为2h,继续保温5h生成线性丙烯酸树脂聚合物,降温至40℃以下,得到丙烯酸聚合树脂。
上述丙烯酸聚合树脂呈互穿的网络结构,内部的聚合物之间有大量的连接点位,具有良好的粘结性能,有良好的热稳定性。
优选的,所述的步骤B中的增强粘结溶液为质量比为1:1-6的丙烯酸聚合树脂与环氧植物油;所述的环氧植物油为环氧茶油单体。
上述环氧茶油单体由如下步骤的方法制成:
(1)将100g的山茶籽油在100℃条件下通入惰性气体保护1h,然后降温至60℃,加入33.2g的2-甲氨基乙醇和1.5g的催化剂甲醇钠反应4h,纯化后,得到茶油前体;
(2)将所述的94g的茶油前体和39g的缚酸剂三乙胺溶于二氯甲烷,在冰水浴条件下逐滴加入22.9g的丙烯酰氯,室温反应12h,纯化后,得到茶油单体;
(3)将所述的40g的茶油单体溶于二氯甲烷,在冰水浴条件下加入23.3g的间氯过氧苯甲酸,最后加入12.9g的催化剂碳酸钠,并将溶液保持冰水浴30min,然后于室温反应2h,得到环氧茶油单体。
上述环氧茶油单体的结构式如图2所示。
上述环氧茶油单体具有良好的热稳定性、耐水性和耐油性,且相容性好、挥发性低。
进一步,所述的步骤B中的增强粘结溶液由包括如下步骤的方法制成:将丙烯酸聚合树脂与环氧植物油进行混合、搅拌,经高速分散后得到所述的增强粘结溶液。
进一步,所述的步骤A中的喷砂处理步骤的细砂的粒径为0.15-0.30mm;所述的步骤A中的浸泡步骤的时间为2-24小时。
进一步,所述的步骤1中的容纳槽的面积为所述的CPET外层的总面积的0.7-0.9倍;所述的步骤1中的容纳槽的深度为所述的改性聚醚醚酮支撑体的厚度的0.5-0.99倍。
进一步,所述的步骤1中的CPET外层的厚度大于等于所述的步骤2中的CPET内层的厚度;所述的步骤1中的CPET外层的厚度大于等于所述的步骤3中的改性聚醚醚酮支撑体的厚度。
本发明还提供了一种使用所述的制备方法制备得到的具有多层结构的CPET片材的应用,所述的具有多层结构的CPET片材在制备耐高温烤箱用产品;所述的具有多层结构的CPET片材在制备烤箱用塑料烤盘或烤箱用食品包装上的应用。
相对于现有技术,本发明具有以下优势:
本发明所述的具有多层结构的CPET片材的采用改性后的聚醚醚酮支撑体与CPET内层、CPET外层组合来制备片材,改性聚醚醚酮支撑体起到支撑作用,大幅提高了CPET片材整体的机械性能,同时具有优异的耐高温性能。
本发明所述的改性聚醚醚酮支撑体先在其表面形成微孔,提高了增强粘结溶液与支撑体的结合面积,同时也提高了与CPET的附着力;并且,我们发现将环氧茶油单体与丙烯酸聚合树脂在一定比例下复配后能显著的提高粘结剂的粘结性,进一步提高CPET片材整体的性能。
附图说明
图1为本发明实施例所述的具有多层结构的CPET片材(挤复前)的截面图;
图2为环氧茶油单体的结构式。
附图标记说明:
1、改性聚醚醚酮支撑体;2、CPET外层;3、CPET内层;21、容纳槽。
具体实施方式
除有定义外,以下实施例中所用的技术术语具有与本发明所属领域技术人员普遍理解的相同含义。以下实施例中所用的试验试剂,如无特殊说明,均为常规生化试剂;所述实验方法,如无特殊说明,均为常规方法。
下面结合实施例来详细说明本发明。
实施例1
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)如图1所示,先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。所述的粘结剂为常用市售产品,实施例1-2与对比例1-10中的粘结剂均为同品种、同批号产品,施用量也相同。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)增强粘结溶液的制备:
将质量比为1:3的丙烯酸聚合树脂与环氧茶油单体进行混合、搅拌,经高速分散30分钟后得到所述的增强粘结溶液;
(2)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(3)将所述的微孔中间体浸泡于增强粘结溶液中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
实施例2
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)增强粘结溶液的制备:
将质量比为1:1的丙烯酸聚合树脂与环氧茶油单体进行混合、搅拌,经高速分散30分钟后得到所述的增强粘结溶液;
(2)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(3)将所述的微孔中间体浸泡于增强粘结溶液中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例1
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)增强粘结溶液的制备:
将质量比为1:50的丙烯酸聚合树脂与环氧茶油单体进行混合、搅拌,经高速分散30分钟后得到所述的增强粘结溶液;
(2)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(3)将所述的微孔中间体浸泡于增强粘结溶液中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例2
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)增强粘结溶液的制备:
将质量比为1:0.01的丙烯酸聚合树脂与环氧茶油单体进行混合、搅拌,经高速分散30分钟后得到所述的增强粘结溶液;
(2)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(3)将所述的微孔中间体浸泡于增强粘结溶液中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例3
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(2)将所述的微孔中间体浸泡于环氧茶油单体中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例4
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(2)将所述的微孔中间体浸泡于丙烯酸聚合树脂中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例5
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)增强粘结溶液的制备:
将质量比为1:3的丙烯酸聚合树脂与环氧茶油单体进行混合、搅拌,经高速分散30分钟后得到所述的增强粘结溶液;
(2)将所述的聚醚醚酮片材浸泡于增强粘结溶液中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例6
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备改性聚醚醚酮支撑体:将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到改性聚醚醚酮支撑体;
(2)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(3)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(4)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
对比例7
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为改性聚醚醚酮支撑体的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与改性聚醚醚酮支撑体、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
改性聚醚醚酮支撑体由包括如下步骤的方法制成:
(1)将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
(2)将所述的微孔中间体浸泡于聚酰亚胺粘结剂溶液中,浸泡5小时完成后经烘干得到改性聚醚醚酮支撑体。
对比例8
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层, CPET外层上设有容纳槽,容纳槽的深度为聚醚醚酮片材的厚度的0.6倍,容纳槽的面积为CPET外层的总面积的0.8倍;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与聚醚醚酮片材、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将聚醚醚酮片材放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
对比例9
一种具有多层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与聚醚醚酮片材、CPET外层的厚度之比为1:0.8:1.2;
(3)先在所述的CPET外层的上方均涂覆有粘结剂,然后将聚醚醚酮片材放在所述的CPET外层上,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的聚醚醚酮片材上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
对比例10
一种具有双层结构的CPET片材的制备方法,包括如下步骤:
(1)制备CPET外层:将CPET材料进行挤出成型,得到CPET外层;
(2)制备CPET内层:将CPET材料进行挤出成型,得到CPET内层,CPET内层的厚度与CPET外层的厚度之比为1:1.2;
(3)先在CPET外层的上方均涂覆有粘结剂,然后将CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
将各实施例与各对比例得到的CPET片材进行多项性能测试,结果如表1所示。
表1 性能测试结果
由表1可知,实施例1与实施例2得到的片材相对于各对比例的断裂伸长率与拉伸强度,均有大幅提升;当提升丙烯酸聚合树脂或环氧茶油单体含量后,均会对片材的性能有一定影响;质量比为1:3的丙烯酸聚合树脂与环氧茶油单体的复配效果最优,环氧茶油单体的加入提高了丙烯酸聚合树脂的分散性能,提高了丙烯酸聚合树脂与CPET、改性聚醚醚酮骨架的粘结性,再与两侧的粘结剂结合后,同时也起到了增强粘结剂粘性的效果,相比于普通粘结剂有突出的效果,单独使用丙烯酸聚合树脂或环氧茶油单体均会对片材的性能有严重影响;并且,使用改性后的聚醚醚酮支撑体与普通聚醚醚酮片材相比,产品性能也有显著的提升;CPET外层直接使用片材后,由于没有容纳槽对聚醚醚酮片材的限位,直接进行挤复后,容易造成局部位置容易碎裂的情况,如聚醚醚酮片材的边缘处。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,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 (10)
1.一种具有多层结构的CPET片材的制备方法,其特征在于:包括如下步骤:
步骤1是制备CPET外层:将CPET材料进行挤出成型,得到CPET外层,所述的CPET外层上设有容纳槽;
步骤2是制备CPET内层:将CPET材料进行挤出成型,得到CPET内层;
步骤3是先在所述的CPET外层的容纳槽内与所述的CPET外层的上方均涂覆有粘结剂,然后将改性聚醚醚酮支撑体放入所述的容纳槽内,再将CPET内层的底部与涂覆有粘结剂,最后将所述的CPET内层放置于所述的CPET外层上方,得到预制料,将所述的预制料进行挤复后得到所述的具有多层结构的CPET片材。
2.根据权利要求1所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的改性聚醚醚酮支撑体经表面处理、包覆增强粘结层后得到。
3.根据权利要求2所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤1中的改性聚醚醚酮支撑体由包括如下步骤的方法制成:
步骤A是将聚醚醚酮片材的表面进行喷砂处理,使聚醚醚酮片材的表面形成微孔,得到微孔中间体;
步骤B是将所述的微孔中间体浸泡于增强粘结溶液中,浸泡完成后经烘干得到改性聚醚醚酮支撑体。
4.根据权利要求3所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤B中的增强粘结溶液为质量比为1:0.1-10的丙烯酸聚合树脂与环氧植物油。
5.根据权利要求4所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤B中的增强粘结溶液为质量比为1:1-6的丙烯酸聚合树脂与环氧植物油;所述的环氧植物油为环氧茶油单体。
6.根据权利要求3所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤B中的增强粘结溶液由包括如下步骤的方法制成:将丙烯酸聚合树脂与环氧植物油进行混合、搅拌,经高速分散后得到所述的增强粘结溶液。
7.根据权利要求3所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤A中的喷砂处理步骤的细砂的粒径为0.15-0.30mm;所述的步骤A中的浸泡步骤的时间为2-24小时。
8.根据权利要求1所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤1中的容纳槽的面积为所述的CPET外层的总面积的0.7-0.9倍;所述的步骤1中的容纳槽的深度为所述的改性聚醚醚酮支撑体的厚度的0.5-0.99倍。
9.根据权利要求1所述的具有多层结构的CPET片材的制备方法,其特征在于:所述的步骤1中的CPET外层的厚度大于等于所述的步骤2中的CPET内层的厚度;所述的步骤1中的CPET外层的厚度大于等于所述的步骤3中的改性聚醚醚酮支撑体的厚度。
10.使用权利要求1-9中任一项所述的制备方法制备得到的具有多层结构的CPET片材的应用,其特征在于:所述的具有多层结构的CPET片材在制备耐高温烤箱用产品;所述的具有多层结构的CPET片材在制备烤箱用塑料烤盘或烤箱用食品包装上的应用。
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