CN109575473A - 一种广泛使用的保温pvc板及其生产方法 - Google Patents
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Abstract
本发明提供一种广泛使用的保温PVC板及其生产方法,保温PVC板从上到下依次为PVC实心层、发泡层和实心层,其中PVC实心层原材料由80‑100份聚氯乙烯树脂、20‑30份碳纤维、0.8‑1.4份硬质酸钙、4‑7份三盐基性硫酸铅和2‑4份领苯二甲酸二辛酯在125‑140℃混合均匀制备,PVC发泡层原材料由80‑110份聚氯乙烯树脂、PVC弹性抗冲改性剂、25‑35份碳酸钙、3‑6份复合稳定剂、0.6‑0.9份发泡剂、4‑7份发泡调节剂和0.4‑0.6份润滑剂混合均匀制备,PVC实心层和发泡层原材料均是采用双螺旋挤出机挤到模具中,随模具自然冷却,本发明提供的PVC板生产工艺,聚氯乙烯树脂多烯化结构小于0.1%,既能够保证挤出物料具有足够的流变性顺利挤出,又能够防止聚氯乙烯多烯化,降低产品质量。
Description
技术领域
本发明涉及PVC保温材料制备技术领域,具体涉及一种广泛使用的保温PVC板及其生产方法。
背景技术
PVC是一种耐酸、碱、盐的树脂,因其良好的化学性能及相对低廉的价格,广泛应用于化工、建材、轻工、机械等各行业。PVC硬板更是工业中应用较广泛的产品,特别是应用于保温隔热材料。PVC材料根据其是否发泡和发泡量多少而决定其机械性能和导热性能。PVC材料中发泡量较大时,PVC材料导热系数较大,相反,机械强度较大,所以通常采用PVC材料发泡材料作为制备保温隔热材料的原料。板具有很多优良特性,比如PVC发泡材料由于导热系数非常低,能够广泛应用于建筑、建材、装饰、家具、广告、汽车等行业中的保温隔热材料,近年来得到快速发展。PVC发泡板从产品外观、性能和生产工艺可分为两类:结皮发泡板材,其采用塞露卡远离生产,表面结一层硬皮,光滑平整,硬度高,力学性能好,并且产品精确度高,厚度误差小,对模具、配方、材料、生产工艺要求严格,自由发泡板材,产品表面疏松没有结皮,呈细密凹凸状麻面,有利于印刷、喷涂、贴面,采用普通发泡模具即可生产,工艺过程相对容易控制。
现有PVC板生产工序为混料:PVC粉、增塑剂、稳定剂、润滑剂、填充剂等原材料按一定次序投料混合;密炼:把均匀混合后的料投入密炼机进行密炼;开炼:压延制成片状半成品,即此工序生产中间层、下底层料;面料及透明料的裁切:将产品生产过程所需透明耐磨层、印刷装饰层依产品尺寸进行裁切;铺模:依产品结构配方、客户花色要求按标准作业规范进行铺设摆放并重叠整齐;热压:热压成型后,使产品层与层之间较牢固地粘接在一起;淋膜:将热压成型后的半成品经PU涂层固化处理,使产品耐磨、免上光打蜡,方便易洁之功效;回火:产品经热压成型后产品未趋于稳定,经火热处理产品物性具有较好的稳定性;养生:即静置,此工序为产品应力完全消除之关键工序,是将回火后之半成品置于恒温室冷却、静置,使每张半成品温度较为均匀后方可成型;成型:依客户要求,可成型不同规格之产品,满足不同需求,由此可见现有PVC板的生产工艺复杂。但是PVC又是不良热导体、传热慢、要制备性能良好的产品,加热温度时间较难控制,而且若加温时间过长,,PVC受热易分解脱出HCl,并形成多烯结构,如果长期高温加工,将严重影响产品性能。目前,PVC板材一般根据操作者的经验来确定压制时间,不同板厚,不同操作者对时间的控制各不相同,由此造成产品质量的波动较大。
公开号为CN201410608536.1的中国专利中提供了一种PVC板材及生产方法,PVC板材由84%-86%的PVC废料、7%-8%的钙粉、 0.8%-1.1%的稳定剂、3.5%-4%的发泡调节剂、0.15-0.3%的黄发泡、 0.4%-0.7%的白发泡、0.05%-0.25%的PE蜡、0.2%-0.4%的OK60、 0.15%-0.3%的OA6、1%-1.7%的ACM制备而成。生产方法是低温混合、挤出、冷却定型。但是关于上述技术问题,该发明中并未详述。
发明内容
为了解决以上问题,本发明提供了一种广泛使用的保温PVC板及其生产方法。
本发明提供了一种广泛使用的保温PVC板及其生产方法,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层。
优选地,上述PVC实心层由以下重量份数组分制备而成:80-100 份聚氯乙烯(PVC)树脂、20-30份碳纤维、0.8-1.4份硬质酸钙、4-7份三盐基性硫酸铅和2-4份邻苯二甲酸二辛酯。
优选地,上述PVC发泡层由以下重量份数组分制备而成:80-110 份聚氯乙烯(PVC)树脂、PVC弹性抗冲改性剂、25-35份碳酸钙、3-6 份复合稳定剂、0.6-0.9份发泡剂、4-7份发泡调节剂和0.4-0.6份润滑剂。
优选地,上述复合稳定剂为钙锌稳定剂或者有机锡稳定剂中的一种。
优选地,上述润滑剂为PE蜡A-C316A或者PE蜡A-C6A中的一种。
优选地,上述发泡剂为ADC发泡剂,所述发泡调节剂为聚丙烯酸酯。
其中,上述广泛使用的保温PVC板的生产方法包括如下步骤:
(1)PVC实心层制备:按照权利要求2称量各个重量组分,将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为 165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;
(2)PVC发泡层制备:按照权利要求3称量各个重量组分,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
优选地,上述步骤(1)中螺杆挤出机螺杆转速为14-22r/min,所述步骤(2)中螺杆挤出机螺杆转速为14-22r/min。
本发明的有益效果为:
本发明中通过将80-100份聚氯乙烯树脂、20-30份碳纤维、0.8-1.4 份硬质酸钙、4-7份三盐基性硫酸铅和2-4份邻苯二甲酸二辛酯在 125-140℃混合均匀,能够制备出机械性能强度大PVC材料,然后再双螺杆挤出机中工作温度为165-185℃挤出,在此工艺温度下,聚氯乙烯树脂多烯化结构小于0.1%,既能够保证挤出物料具有足够的流变性顺利挤出,又能够防止聚氯乙烯多烯化,降低产品质量;本发明通过将 80-110份聚氯乙烯树脂、PVC弹性抗冲改性剂、25-35份碳酸钙、3-6 份复合稳定剂、0.6-0.9份发泡剂、4-7份发泡调节剂和0.4-0.6份润滑剂混合均匀,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;先加热至120-135℃,再在45-55℃条件下进行冷却,能够在在发泡过程中,瞬间冷却物料,使物料缓慢凝固,保持机械性能,能够然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,在此工艺温度下,聚氯乙烯树脂多烯化结构小于0.1%,既能够保证挤出物料具有足够的流变性顺利挤出,又能够防止聚氯乙烯多烯化,降低产品质量。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明的实施例,对本发明实施例中的技术方案进行清楚、完整地描述。基于本发明中的实施例,本领域普通技术人员在没有作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。
实施例1
本发明提供一种广泛使用的保温PVC板,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层,其制备方法包括以下步骤:
(1)PVC实心层制备:按照以下重量份数组分称量,80份聚氯乙烯树脂、20份碳纤维、0.8份硬质酸钙、4份三盐基性硫酸铅和2份邻苯二甲酸二辛酯将各组分混合均匀放入反应釜中,加热至物料温度为125℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;螺杆转速为14-22r/min;
(2)PVC发泡层制备:按照以下重量份数组分制备而成,80份聚氯乙烯树脂、PVC弹性抗冲改性剂、35份碳酸钙、6份钙锌稳定剂、 0.9份ADC发泡剂、7份聚丙烯酸酯化合物和0.6份PE蜡A-C316A,将各组分混合均匀放入反应釜中,加热直至物料温度达到120℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;螺杆转速为14-22r/min;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
实施例2
本发明提供一种广泛使用的保温PVC板,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层,其制备方法包括以下步骤:
(1)PVC实心层制备:按照以下重量份数组分称量,100份聚氯乙烯树脂、30份碳纤维、1.4份硬质酸钙、7份三盐基性硫酸铅和4份邻苯二甲酸二辛酯将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;螺杆转速为14-22r/min;
(2)PVC发泡层制备:按照以下重量份数组分制备而成,110份聚氯乙烯树脂、PVC弹性抗冲改性剂、35份碳酸钙、6份有机锡稳定剂、0.9份ADC发泡剂、7份聚丙烯酸酯化合物和0.6份PE蜡A-C316A,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;螺杆转速为14-22r/min;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
实施例3
本发明提供一种广泛使用的保温PVC板,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层,其制备方法包括以下步骤:
(1)PVC实心层制备:按照以下重量份数组分称量,90份聚氯乙烯树脂、25份碳纤维、1.1份硬质酸钙、6份三盐基性硫酸铅和3份邻苯二甲酸二辛酯将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;螺杆转速为14-22r/min;
(2)PVC发泡层制备:按照以下重量份数组分制备而成,92份聚氯乙烯树脂、PVC弹性抗冲改性剂、27份碳酸钙、4份钙锌稳定剂、 0.7份ADC发泡剂、6份聚丙烯酸酯化合物和0.5份PE蜡A-C316A,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;螺杆转速为14-22r/min;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
实施例4
本发明提供一种广泛使用的保温PVC板,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层,其制备方法包括以下步骤:
(1)PVC实心层制备:按照以下重量份数组分称量,88份聚氯乙烯树脂、26份碳纤维、1.0份硬质酸钙、5份三盐基性硫酸铅和3份邻苯二甲酸二辛酯将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;螺杆转速为14-22r/min;
(2)PVC发泡层制备:按照以下重量份数组分制备而成,88份聚氯乙烯树脂、PVC弹性抗冲改性剂、29份碳酸钙、5份钙锌稳定剂、0.7份ADC发泡剂、6份聚丙烯酸酯化合物和0.5份PE蜡A-C6A,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;螺杆转速为 14-22r/min;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
实施例5
本发明提供一种广泛使用的保温PVC板,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层,其制备方法包括以下步骤:
(1)PVC实心层制备:按照以下重量份数组分称量,96份聚氯乙烯树脂、26份碳纤维、1.0份硬质酸钙、6份三盐基性硫酸铅和3份邻苯二甲酸二辛酯将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;螺杆转速为14-22r/min;
(2)PVC发泡层制备:按照以下重量份数组分制备而成,96份聚氯乙烯树脂、PVC弹性抗冲改性剂、31份碳酸钙、5份有机锡稳定剂、0.8份ADC发泡剂、46份聚丙烯酸酯化合物和0.5份PE蜡A-C6A,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;螺杆转速为14-22r/min;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
实施例6
本发明提供一种广泛使用的保温PVC板,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层,其制备方法包括以下步骤:
(1)PVC实心层制备:按照以下重量份数组分称量,98份聚氯乙烯树脂、29份碳纤维、1.3份硬质酸钙、6份三盐基性硫酸铅和3份邻苯二甲酸二辛酯将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;螺杆转速为14-22r/min;
(2)PVC发泡层制备:按照以下重量份数组分制备而成,108份聚氯乙烯树脂、PVC弹性抗冲改性剂、34份碳酸钙、5份钙锌稳定剂、 0.8份ADC发泡剂、6份聚丙烯酸酯化合物和0.5份PE蜡A-C316A,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;螺杆转速为14-22r/min;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
表1实施例1-6性能指标
表1显示了实施例1-6的性能指标,由表1可知,本发明提供的 PVC材料导热系数很小,由于多烯化结构率低,所以拉伸强度和冲击强度均比较高。
照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解: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;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (8)
1.一种广泛使用的保温PVC板,其特征在于,所述保温PVC板由PVC实心层和PVC发泡层压制而成,所述保温PVC板从上到下依次为PVC实心层、PVC发泡层和PVC实心层。
2.根据权利要求1所述的广泛使用的保温PVC板,其特征在于,所述PVC实心层由以下重量份数组分制备而成:80-100份聚氯乙烯树脂、20-30份碳纤维、0.8-1.4份硬质酸钙、4-7份三盐基性硫酸铅和2-4份邻苯二甲酸二辛酯。
3.根据权利要求1所述的广泛使用的保温PVC板,其特征在于,所述PVC发泡层由以下重量份数组分制备而成:80-110份聚氯乙烯树脂、PVC弹性抗冲改性剂、25-35份碳酸钙、3-6份复合稳定剂、0.6-0.9份发泡剂、4-7份发泡调节剂和0.4-0.6份润滑剂。
4.根据权利要求3所述的广泛使用的保温PVC板,其特征在于,所述复合稳定剂为钙锌稳定剂或者有机锡稳定剂中的一种。
5.根据权利要求3所述的广泛使用的保温PVC板,其特征在于,所述润滑剂为PE蜡A-C316A或者PE蜡A-C6A中的一种。
6.根据权利要求3所述的广泛使用的保温PVC板,其特征在于,所述发泡剂为ADC发泡剂,所述发泡调节剂为聚丙烯酸酯。
7.如权利要求1所述的广泛使用的保温PVC板的生产方法,其特征在于,所述生产方法包括如下步骤:
(1)PVC实心层制备:按照重量份数称量各个组分,将各组分混合均匀放入反应釜中,加热至物料温度为125-140℃,搅拌均匀后,通过双螺杆挤出机挤压至模具内部;双螺杆挤出机工作温度为165-185℃,PVC实心层材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC实心层;
(2)PVC发泡层制备:按照重量份数称量各个组分,将各组分混合均匀放入反应釜中,加热直至物料温度达到120-135℃,然后迅速将物料转移搅拌釜中冷却搅拌,搅拌釜内温度为45-55℃;然后将冷却后的产品通过双螺杆挤出机挤到板材模具内,双螺杆挤出机工作温度为170-185℃,PVC发泡材料随板材模具自然冷却降温;当温度降至常温时,将模具拆开,切割,得到PVC发泡层;
(3)依次将PVC实心层、PVC发泡层和PVC实心层叠加整齐,采用双辊筒炼塑机进行压合,辊温为145-160℃,压力为9-11MPa,辊压时间为3-5min,制得保温PVC板。
8.根据权利要求7所述的广泛使用的保温PVC板的生产方法,其特征在于,所述步骤(1)和步骤(2)中中螺杆挤出机螺杆转速均为14-22r/min。
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CN114013002A (zh) * | 2021-11-04 | 2022-02-08 | 浙江欧舍家居新材股份有限公司 | 一种微发泡pvc板生产工艺 |
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CN111634032A (zh) * | 2020-04-17 | 2020-09-08 | 来安县亨通橡塑制品有限公司 | 一种连续无拼接地铁车辆用残疾人标识地板布制作方法 |
CN114013002A (zh) * | 2021-11-04 | 2022-02-08 | 浙江欧舍家居新材股份有限公司 | 一种微发泡pvc板生产工艺 |
CN114654821A (zh) * | 2022-02-28 | 2022-06-24 | 迈趣(福建)新材料科技有限责任公司 | 一种环保型pvc墙面建材及其生产方法 |
CN114654848A (zh) * | 2022-04-13 | 2022-06-24 | 镇江美达塑胶有限公司 | 一种pvc挤出复合声学材料及其生产设备与制备方法 |
CN115139606A (zh) * | 2022-06-20 | 2022-10-04 | 浙江新洁新材料科技有限公司 | 一种内置加热装置与保温层的pvc管及其制备方法 |
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