CN107672267B - 一种环保节能型pet-pvc复合膜及其应用 - Google Patents
一种环保节能型pet-pvc复合膜及其应用 Download PDFInfo
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Abstract
本发明公开了一种环保节能型PET‑PVC复合膜及其应用,所述PET‑PVC复合膜的具体制备过程为:通过涂布机在纳米相变PET膜的表面和PVC膜的底面分别涂布一层粘合剂,将荧光纤维膜通过粘合剂粘合在纳米相变PET膜的表面,同时将PVC膜的底面粘合在荧光纤维膜的表面,然后进行微波干燥,得到PET‑PVC复合膜。本发明的复合膜包括相互粘合的纳米相变PET膜、荧光纤维膜和PVC膜,通过纳米相变PET膜和荧光纤维膜中的相材料的作用不仅可以起到调温储能的节能作用,同时通过荧光纤维膜中荧光粉的变色效果可以对家电表面起到装饰美化作用。
Description
技术领域
本发明属于覆膜钢板制备领域,涉及一种环保节能型PET-PVC复合膜及其应用。
背景技术
早期的家电面板和侧板通常直接使用复合钢板,钢板容易锈蚀影响产品的外观,通常进行直接喷漆处理,喷漆后由于长时间使用漆膜的破损影响家电的外观,现在常用PET-PVC复合膜粘合在家电的表面,不仅能够起到装饰作用而且对于覆膜钢板有一定的保护作用,可以对家电起到防潮、防腐、表面装饰和耐刮伤的作用,但是PET-PVC复合膜的导热性和导电性能较差,容易造成家电的能量损耗,随着人们环保节能意识的增强,对于家电的表面不仅仅局限于装饰性能,同时也注重家电的节能性,现有的节能家电面板通常使用彩涂钢板,直接在钢板的表面涂布相变涂料,从而达到节能的目的,但是对于家电的装饰性和耐磨性降低,因此对于既节能环保又具有装饰性的家电板材的研制势在必行。
发明内容
本发明的目的在于提供一种环保节能型PET-PVC复合膜,该复合膜包括相互粘合的纳米相变PET膜、荧光纤维膜和PVC膜,通过纳米相变PET膜和荧光纤维膜中的相材料的作用不仅可以起到调温储能的节能作用,同时通过荧光纤维膜中荧光粉的变色效果可以对家电表面起到装饰美化作用。
本发明的目的可以通过以下技术方案实现:
一种环保节能型PET-PVC复合膜,包括依次通过粘合剂粘合的纳米相变PET膜、荧光纤维膜和PVC膜,所述PET-PVC复合膜的制备过程为:通过涂布机在纳米相变PET膜的表面和PVC膜的底面分别涂布一层粘合剂,将荧光纤维膜通过粘合剂粘合在纳米相变PET膜的表面,同时将PVC膜的底面粘合在荧光纤维膜的表面,然后进行微波干燥,通过微波干燥不改变荧光纤维膜和纳米相变PET膜的形态,得到PET-PVC复合膜;
所述纳米相变PET膜的制备过程如下:
(1)将反应容器中持续充入氮气,排尽容器中的空气后向容器中加入一定量的对苯二甲酸二甲酯和乙二醇,同时加入磷酸和一定量的石墨烯溶液,在200-250℃下反应30-60min后,再向其中加入一定量的聚乙二醇,升温至270-290℃反应2-5h,出料并在水中冷却成型,干燥后切粒得到纳米相变PET母粒;所述对苯二甲酸二甲酯、乙二醇和聚乙二醇的物质的量之比为1:2.11-2.32:0.32-0.54,所述m(磷酸):m(总质量)=0.001-0.008:1,m(石墨烯溶液):m(总质量)=0.012-0.05:1,m(总质量)=m(对苯二甲酸二甲酯)+m(乙二醇)+m(聚乙二醇);优选地,所述石墨烯分散溶液的制备方法为:将一定量的水和氧化石墨烯加入反应容器中,搅拌分散形成悬浊液,再将悬浊液超声分散5-15min,然后再加入一定量的乙二醇,继续超声分散10-30min,得到石墨烯分散溶液,其中1mL水中加入0.5-1mg的氧化石墨烯,加入水的质量与加入乙二醇的质量相同;
(2)将步骤1制备的纳米相变PET母粒在挤出机中熔融加热,得到的PET熔体从挤出机的模头流出后,在急冷辊上迅速冷却铸片,然后将铸片经过拉伸机进行拉伸,得到纳米相变PET薄膜。
所述荧光纤维膜的制备方法为:S1:将一定量的石蜡在搅拌容器中加热至50-60℃,边加热边搅拌直到石蜡完全熔化,继续加热,并向其中加入荧光粉,以20-50rpm的搅拌速度搅拌30-50min,得到混合石蜡熔体,其中石蜡与荧光粉的质量比为1:0.001-0.018;
S2:将PVC中空纤维膜加入步骤1的混合石蜡熔体中浸渍12-24h,浸渍过程中不断加热,使石蜡保持熔融状态,浸渍完全后在室温下冷却,得到荧光纤维膜。
所述PVC膜为PVC压花膜;
一种环保节能型PET-PVC复合膜的应用,该PET-PVC复合膜应用于覆膜钢板的制备,所述覆膜钢板用于家电的侧板和面板制备,所述覆膜钢板的制备过程如下:
(1)通过感应加热炉将钢板加热至35-50℃,然后将加热后的钢板置于抛丸机中进行抛丸磨料,除去钢板表面和底面的油污和铁锈,抛丸后的钢板表面和背面立即用涂布机涂布一层底漆,然后在烘干炉中通过蒸汽快速干燥;
(2)将步骤1制备的钢板表面涂布的底漆表面通过涂布辊涂布一层粘合剂,将PET-PVC复合膜的纳米相变PET薄膜粘合在底漆表面,然后在PET-PVC复合膜的PVC膜表面经过压膜机压覆一层PE保护膜。
本发明的有益效果:
本发明的复合膜包括相互粘合的纳米相变PET膜、荧光纤维膜和PVC膜,通过纳米相变PET膜和荧光纤维膜中均含有相变材料,相变材料可以起到调温储能的作用,降低家电的能量消耗,起到节能的作用。
本发明的纳米相变PET膜中添加有石墨烯材料,通过石墨烯材料的作用,能够增强家电面板的导热、导电性,同时能够增大PET膜的机械强度。
本发明的荧光纤维膜通过将中空PVC纤维膜浸渍在石蜡和荧光粉的混合熔体中,由于中空PVC纤维膜含有孔道结构,石蜡和荧光粉进入到纤维孔道中,使PVC纤维膜具有石蜡相变材料的调温储能性能和荧光粉的变色装饰性能。
本发明的复合膜设有PVC压花膜,通过与荧光纤维膜的变色效果相结合,可以提高家电表面的美观,同时由于PVC膜的耐油性、耐酸碱性好,可以增强家电表面的防污能力,并且PVC膜对水蒸气和氧气具有良好的阻挡作用,可以进一步防止家电的覆膜钢板的氧化和锈蚀。
附图说明
为了便于本领域技术人员理解,下面结合附图对本发明作进一步的说明。
图1为本发明PET-PVC复合膜的结构爆炸示意图。
具体实施方式
结合图1通过本实施例进行详细说明:
实施例1:
一种环保节能型PET-PVC复合膜的制备过程为:通过涂布机在纳米相变PET膜1的表面和PVC膜的底面分别涂布一层粘合剂,将荧光纤维膜2通过粘合剂均匀平铺粘合在纳米相变PET膜1的表面,同时将PVC膜的底面粘合在荧光纤维膜2的表面,然后进行微波干燥,通过微波干燥不改变荧光纤维膜2和纳米相变PET膜1的形态,得到PET-PVC复合膜,并测定其导热系数,结果如表2所示;
所述纳米相变PET膜1的制备过程如下:
(1)将反应容器中持续充入氮气,排尽容器中的空气后向容器中加入194g对苯二甲酸二甲酯和131.03g乙二醇,同时加入0.42g磷酸和5.05g石墨烯溶液,在200℃下反应30min后,再向其中加入96g聚乙二醇,升温至270℃反应2h,出料并在水中冷却成型,干燥后切粒得到纳米相变PET母粒;所述石墨烯分散溶液的制备方法为:将一定量的水和氧化石墨烯加入反应容器中,搅拌分散形成悬浊液,再将悬浊液超声分散5min,然后再加入一定量的乙二醇,继续超声分散10min,得到石墨烯分散溶液,其中1mL水中加入0.5mg的氧化石墨烯,加入水的质量与加入乙二醇的质量相同;
(2)将步骤1制备的纳米相变PET母粒在挤出机中熔融加热,得到的PET熔体从挤出机的模头流出后,在急冷辊上迅速冷却铸片,然后将铸片经过拉伸机进行拉伸,得到纳米相变PET薄膜。
所述荧光纤维膜2的制备方法为:S1:将一定量的石蜡在搅拌容器中加热至50℃,边加热边搅拌直到石蜡完全熔化,继续加热,并向其中加入荧光粉,以20rpm的搅拌速度搅拌30min,得到混合石蜡熔体,其中石蜡与荧光粉的质量比为1:0.001;
S2:将PVC中空纤维膜加入步骤1的混合石蜡熔体中浸渍12-24h,PVC中空纤维膜的外径为0.5mm、内径为0.38mm,浸渍过程中不断加热,使石蜡保持熔融状态,浸渍完全后在室温下冷却,得到荧光纤维膜2,并通过差示扫描量热仪测定其相变温度,同时使用热常数分析仪测定其导热系数,同时通过氮气吸附法测定其孔径,结果如表1所示。
所述PVC膜3为PVC压花膜;
一种环保节能型PET-PVC复合膜的应用,所述PET-PVC复合膜用于家电的侧板和面板的覆膜钢板的制备。
所述覆膜钢板的制备过程如下:
(1)通过感应加热炉将钢板加热至35℃,然后将加热后的钢板置于抛丸机中进行抛丸磨料,除去钢板表面和底面的油污和铁锈,抛丸后的钢板表面和背面立即用涂布机涂布一层底漆,然后在烘干炉中通过蒸汽快速干燥;
(2)将步骤1制备的钢板表面涂布的底漆表面通过涂布辊涂布一层粘合剂,将PET-PVC复合膜的纳米相变PET薄膜粘合在底漆表面,在PET-PVC复合膜的PVC膜3表面经过压膜机压覆一层PE保护膜。
实施例2:
一种环保节能型PET-PVC复合膜的制备过程为:通过涂布机在纳米相变PET膜1的表面和PVC膜的底面分别涂布一层粘合剂,将荧光纤维膜2通过粘合剂均匀平铺粘合在纳米相变PET膜1的表面,同时将PVC膜的底面粘合在荧光纤维膜2的表面,然后进行微波干燥,通过微波干燥不改变荧光纤维膜2和纳米相变PET膜1的形态,得到PET-PVC复合膜,并测定其导热系数,结果如表2所示;
所述纳米相变PET膜1的制备过程如下:
(1)将反应容器中持续充入氮气,排尽容器中的空气后向容器中加入205g对苯二甲酸二甲酯和144.74g乙二醇,同时加入2.38g磷酸和14.31g石墨烯溶液,在220℃下反应40min后,再向其中加入127g聚乙二醇,升温至280℃反应3h,出料并在水中冷却成型,干燥后切粒得到纳米相变PET母粒;所述石墨烯分散溶液的制备方法为:将一定量的水和氧化石墨烯加入反应容器中,搅拌分散形成悬浊液,再将悬浊液超声分散10min,然后再加入一定量的乙二醇,继续超声分散20min,得到石墨烯分散溶液,其中1mL水中加入0.75mg的氧化石墨烯,加入水的质量与加入乙二醇的质量相同;
(2)将步骤1制备的纳米相变PET母粒在挤出机中熔融加热,得到的PET熔体从挤出机的模头流出后,在急冷辊上迅速冷却铸片,然后将铸片经过拉伸机进行拉伸,得到纳米相变PET薄膜。
所述荧光纤维膜2的制备方法为:S1:将一定量的石蜡在搅拌容器中加热至55℃,边加热边搅拌直到石蜡完全熔化,继续加热,并向其中加入荧光粉,以35rpm的搅拌速度搅拌40min,得到混合石蜡熔体,其中石蜡与荧光粉的质量比为1:0.011;
S2:将PVC中空纤维膜加入步骤1的混合石蜡熔体中浸渍15h,浸渍过程中不断加热,使石蜡保持熔融状态,浸渍完全后在室温下冷却,得到荧光纤维膜2,并通过差示扫描量热仪测定其相变温度,同时使用热常数分析仪测定其导热系数,同时通过氮气吸附法测定其孔径,结果如表1所示。
所述PVC膜3为PVC压花膜;
一种环保节能型PET-PVC复合膜的应用,所述PET-PVC复合膜用于家电的侧板和面板的覆膜钢板的制备。
所述覆膜钢板的制备过程如下:
(1)通过感应加热炉将钢板加热至40℃,然后将加热后的钢板置于抛丸机中进行抛丸磨料,除去钢板表面和底面的油污和铁锈,抛丸后的钢板表面和背面立即用涂布机涂布一层底漆,然后在烘干炉中通过蒸汽快速干燥;
(2)将步骤1制备的钢板表面涂布的底漆表面通过涂布辊涂布一层粘合剂,将PET-PVC复合膜的纳米相变PET薄膜粘合在底漆表面,在PET-PVC复合膜的PVC膜3表面经过压膜机压覆一层PE保护膜。
实施例3:
一种环保节能型PET-PVC复合膜的制备过程为:通过涂布机在纳米相变PET膜1的表面和PVC膜的底面分别涂布一层粘合剂,将荧光纤维膜2通过粘合剂均匀平铺粘合在纳米相变PET膜1的表面,同时将PVC膜的底面粘合在荧光纤维膜2的表面,然后进行微波干燥,通过微波干燥不改变荧光纤维膜2和纳米相变PET膜1的形态,得到PET-PVC复合膜,并测定其导热系数,结果如表2所示;
所述纳米相变PET膜1的制备过程如下:
(1)将反应容器中持续充入氮气,排尽容器中的空气后向容器中加入210g对苯二甲酸二甲酯和155.52g乙二醇,同时加入4.32g磷酸和27.02g石墨烯溶液,在250℃下反应60min后,再向其中加入174.96g聚乙二醇,升温至290℃反应5h,出料并在水中冷却成型,干燥后切粒得到纳米相变PET母粒;所述石墨烯分散溶液的制备方法为:将一定量的水和氧化石墨烯加入反应容器中,搅拌分散形成悬浊液,再将悬浊液超声分散15min,然后再加入一定量的乙二醇,继续超声分散30min,得到石墨烯分散溶液,其中1mL水中加入1mg的氧化石墨烯,加入水的质量与加入乙二醇的质量相同;
(2)将步骤1制备的纳米相变PET母粒在挤出机中熔融加热,得到的PET熔体从挤出机的模头流出后,在急冷辊上迅速冷却铸片,然后将铸片经过拉伸机进行拉伸,得到纳米相变PET薄膜。
所述荧光纤维膜2的制备方法为:S1:将一定量的石蜡在搅拌容器中加热至60℃,边加热边搅拌直到石蜡完全熔化,继续加热,并向其中加入荧光粉,以50rpm的搅拌速度搅拌50min,得到混合石蜡熔体,其中石蜡与荧光粉的质量比为1:0.018;
S2:将PVC中空纤维膜加入步骤1的混合石蜡熔体中浸渍24h,浸渍过程中不断加热,使石蜡保持熔融状态,浸渍完全后在室温下冷却,得到荧光纤维膜2,并通过差示扫描量热仪测定其相变温度,同时使用热常数分析仪测定其导热系数,同时通过氮气吸附法测定其孔径,结果如表1所示。
所述PVC膜3为PVC压花膜;
一种环保节能型PET-PVC复合膜的应用,所述PET-PVC复合膜用于家电的侧板和面板的覆膜钢板的制备。
所述覆膜钢板的制备过程如下:
(1)通过感应加热炉将钢板加热至50℃,然后将加热后的钢板置于抛丸机中进行抛丸磨料,除去钢板表面和底面的油污和铁锈,抛丸后的钢板表面和背面立即用涂布机涂布一层底漆,然后在烘干炉中通过蒸汽快速干燥;
(2)将步骤1制备的钢板表面涂布的底漆表面通过涂布辊涂布一层粘合剂,将PET-PVC复合膜的纳米相变PET薄膜粘合在底漆表面,在PET-PVC复合膜的PVC膜3表面经过压膜机压覆一层PE保护膜。
实施例4:
一种环保节能型PET-PVC复合膜的制备过程为:将发泡后的PVC片的一面经过压花,制得的PVC膜3的底面均匀压制有若干平行设置的条形压槽,条形压槽的底面为弧形,然后将条形压槽的底面涂布一层粘合剂,同时通过涂布机在纳米相变PET膜1的表面涂布一层粘合剂,将若干荧光纤维膜2通过条形压槽中的粘合剂粘合在PVC膜3地面的条形压槽中,然后将纳米相变PET膜1通过粘合剂粘合在荧光纤维膜2的表面,制备的复合膜由于荧光纤维膜2直接粘合在PVC膜3底面的条形压槽中,不仅粘合牢固,同时制备的复合膜厚度减小,从而导致复合膜的导热性能增强、荧光变色能力增强,然后进行微波干燥,通过微波干燥不改变荧光纤维膜2和纳米相变PET膜1的形态,得到PET-PVC复合膜,并测定其导热系数,结果如表2所示;
所述纳米相变PET膜1的制备过程如下:
(3)将反应容器中持续充入氮气,排尽容器中的空气后向容器中加入210g对苯二甲酸二甲酯和155.52g乙二醇,同时加入4.32g磷酸和27.02g石墨烯溶液,在250℃下反应60min后,再向其中加入174.96g聚乙二醇,升温至290℃反应5h,出料并在水中冷却成型,干燥后切粒得到纳米相变PET母粒;所述石墨烯分散溶液的制备方法为:将一定量的水和氧化石墨烯加入反应容器中,搅拌分散形成悬浊液,再将悬浊液超声分散15min,然后再加入一定量的乙二醇,继续超声分散30min,得到石墨烯分散溶液,其中1mL水中加入1mg的氧化石墨烯,加入水的质量与加入乙二醇的质量相同;
(4)将步骤1制备的纳米相变PET母粒在挤出机中熔融加热,得到的PET熔体从挤出机的模头流出后,在急冷辊上迅速冷却铸片,然后将铸片经过拉伸机进行拉伸,得到纳米相变PET薄膜。
所述荧光纤维膜2的制备方法为:S1:将一定量的石蜡在搅拌容器中加热至60℃,边加热边搅拌直到石蜡完全熔化,继续加热,并向其中加入荧光粉,以50rpm的搅拌速度搅拌50min,得到混合石蜡熔体,其中石蜡与荧光粉的质量比为1:0.018;
S2:将PVC中空纤维膜加入步骤1的混合石蜡熔体中浸渍24h,浸渍过程中不断加热,使石蜡保持熔融状态,浸渍完全后在室温下冷却,得到荧光纤维膜2,并通过差示扫描量热仪测定其相变温度,同时使用热常数分析仪测定其导热系数,同时通过氮气吸附法测定其孔径,结果如表1所示。
对比例1:
直接将PVC膜通过粘合剂粘合再PET膜表面,制备PET-PVC复合膜,测定其导热系数,结果如表2所示,覆膜钢板的制备过程与实施例1-3相同。
表1荧光纤维膜的性能测定:
外孔径(mm) | 内孔径(mm) | |
PVC中空纤维膜 | 0.5 | 0.38 |
实施例1 | 0.58 | 0.02 |
实施例2 | 0.56 | 0.01 |
实施例3 | 0.61 | 0.02 |
实施例4 | 0.57 | 0.02 |
从表1可以看出,PCV中空纤维膜浸渍于石蜡熔体中后,外孔径变大,内孔径变小,说明PCV中空纤维的内孔中填充有石蜡熔体,同时纤维膜的表面包覆一层石蜡熔体。
表2:PET-PVC复合膜的性能测定
膜厚(mm) | 导热系数(W/MK) | 抗拉强度(MPa) | |
石蜡 | * | 0.132 | * |
实施例1 | 1.08 | 0.576 | 45.53 |
实施例2 | 1.05 | 0.631 | 44.12 |
实施例3 | 1.11 | 0.618 | 44.93 |
实施例4 | 0.78 | 0.792 | 44.68 |
对比例1 | 0.68 | 0.146 | 23.15 |
从表2可以看出,相变PET-PVC复合膜的导热系数和普通PET-PVC复合膜相比明显增强,同时与相变石蜡相比也增强,说明该相变PET-PVC复合膜具有较高的储热速率;同时通过抗拉强度可知,相变PET-PVC复合膜的与普通PET-PVC复合膜相比明显增大,由于相变PET-PVC复合膜中加入荧光纤维膜,PET膜中含有石墨烯,可以提高复合膜的抗拉强度。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。
Claims (9)
1.一种环保节能型PET-PVC复合膜,其特征在于,包括依次通过粘合剂粘合的纳米相变PET膜、荧光纤维膜和PVC膜;
所述纳米相变PET膜的制备过程如下:
(1)将反应容器中持续充入氮气,排尽容器中的空气后向容器中加入一定量的对苯二甲酸二甲酯和乙二醇,同时加入磷酸和一定量的石墨烯分散溶液,在200-250℃下反应30-60min后,再向其中加入一定量的聚乙二醇,升温至270-290℃反应2-5h,出料并在水中冷却成型,干燥后切粒得到纳米相变PET母粒;
(2)将步骤1制备的纳米相变PET母粒在挤出机中熔融加热,得到的PET熔体从挤出机的模头流出后,在急冷辊上迅速冷却铸片,然后将铸片经过拉伸机进行拉伸,得到纳米相变PET薄膜。
2.根据权利要求1所述的一种环保节能型PET-PVC复合膜,其特征在于,所述步骤1中,对苯二甲酸二甲酯、乙二醇和聚乙二醇的物质的量之比为1:2.11-2.32:0.32-0.54。
3.根据权利要求1所述的一种环保节能型PET-PVC复合膜,其特征在于,所述步骤1中,m1:m2=0.001-0.008:1,m3:m2=0.012-0.05:1,m1为磷酸的质量、m2为对苯二甲酸二甲酯、乙二醇和聚乙二醇的质量之和,m3为石墨烯分散溶液的质量。
4.根据权利要求1所述的一种环保节能型PET-PVC复合膜,其特征在于,所述步骤1中石墨烯分散溶液的制备方法为:将一定量的水和氧化石墨烯加入反应容器中,搅拌分散形成悬浊液,再将悬浊液超声分散5-15min,然后再加入一定量的乙二醇,继续超声分散10-30min,得到石墨烯分散溶液。
5.根据权利要求4所述的一种环保节能型PET-PVC复合膜,其特征在于,1mL水中加入0.5-1mg的氧化石墨烯,加入水的质量与加入乙二醇的质量相同。
6.根据权利要求1所述的一种环保节能型PET-PVC复合膜,其特征在于,所述荧光纤维膜的制备方法为:
S1:将一定量的石蜡在搅拌容器中加热至50-60℃,边加热边搅拌直到石蜡完全熔化,继续加热,并向其中加入荧光粉,以20-50rpm的搅拌速度搅拌30-50min,得到混合石蜡熔体;
S2:将PVC中空纤维膜加入步骤1的混合石蜡熔体中浸渍12-24h,浸渍过程中不断加热,使石蜡保持熔融状态,浸渍完全后在室温下冷却,得到荧光纤维膜。
7.根据权利要求6所述的一种环保节能型PET-PVC复合膜,其特征在于,所述步骤1中,石蜡与荧光粉的质量比为1:0.001-0.018。
8.根据权利要求1-7任意一项所述的一种环保节能型PET-PVC复合膜的制备方法,其特征在于,具体制备过程为:通过涂布机在纳米相变PET膜的表面和PVC膜的底面分别涂布一层粘合剂,将荧光纤维膜通过粘合剂粘合在纳米相变PET膜的表面,同时将PVC膜的底面粘合在荧光纤维膜的表面,然后进行微波干燥,得到PET-PVC复合膜。
9.一种根据权利要求1所述的环保节能型PET-PVC复合膜的应用,其特征在于,该PET-PVC复合膜应用于覆膜钢板的制备,所述覆膜钢板用于家电的侧板和面板制备;
所述覆膜钢板的制备过程如下:
(1)通过感应加热炉将钢板加热至35-50℃,然后将加热后的钢板置于抛丸机中进行抛丸磨料,除去钢板表面和底面的油污和铁锈,抛丸后的钢板表面和背面立即用涂布机涂布一层底漆,然后在烘干炉中通过蒸汽快速干燥;
(2)将步骤1制备的钢板表面涂布的底漆表面通过涂布辊涂布一层粘合剂,将PET-PVC复合膜的纳米相变PET薄膜粘合在底漆表面,然后在PET-PVC复合膜的PVC膜表面经过压膜机压覆一层PE保护膜。
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