CN104356555A - 高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法 - Google Patents
高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法 Download PDFInfo
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Abstract
本发明涉及一种高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法。本发明属于聚氯乙烯水晶膜技术领域。高弹聚氯乙烯耐候阻燃超透水晶膜片,组成为:聚氯乙烯树脂100质量份;主增塑剂50-80PHR;辅助增塑剂5-10PHR;热稳定剂2-5PHR;抗氧剂0.1-0.5PHR;爽手剂0.05-0.15PHR;加工助剂0.5-1PHR;阻燃剂3-10PHR;着色剂0.005-1PHR;改性聚氯乙烯树脂10-30PHR或弹性剂2-8PHR。制备步骤:(1)捏合料制备:计量投料,混合,冷搅冷却;(2)塑化:行星挤出机进行塑化;(3)压延:压延制薄膜;(4)净化定型:净化水槽冷却定型;(5)挤水、干燥:挤水辊挤水,经热辊筒;(6)冷却、卷取:辊筒冷却,加压卷取。本发明工艺简单、可控性高,产品透明度好,低温柔韧性及回弹性好,高温手感爽滑,力学性能高,阻燃,环保安全。
Description
技术领域
本发明属于聚氯乙烯水晶膜技术领域,特别是涉及一种高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法。
背景技术
目前,聚氯乙烯压延制品在工业、农业、包装、家装装饰、商务地板贴等各领域应用广泛。高弹聚氯乙烯耐候阻燃超透水晶膜片因为色泽鲜艳,手感好,透明度高,特别是在复杂多变气候环境下都能保持良好的弹性,而在运输大宗物体包装袋的可视窗、箱包、高档运动鞋、凸显产品品质和品牌标签膜等领域应用广泛。
由于聚氯乙烯产品本身具有极性,与多数助剂具有很好地相容性,因而可以赋予产品更多功能,并且易于后加工。PVC制品的弹性一般采用添加大量增塑剂实现,而由于PVC树脂吸油量有限,当增塑剂含量增加到一定值时容易发生析出、表面发粘现象而影响产品的使用和美观。采用吸油率大的高分子量树脂时,存在制得的产品往往通透性较差,不能达到超透的效果;而且分子量越大加工温度越高,加工相对较困难等技术问题。
发明内容
本发明为解决公知技术中存在的技术问题而提供一种高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法。
本发明的目的之一是提供一种具有高温40℃不粘连,手感爽滑;低温零下40℃使用时保持较高的柔韧性及伸缩回弹性,不脆裂,具有阻燃,环保安全,高透明,力学性能优异,应用领域广泛等特点的高弹聚氯乙烯耐候阻燃超透水晶膜片。
本发明高弹聚氯乙烯耐候阻燃超透水晶膜片所采取的技术方案是:
一种高弹聚氯乙烯耐候阻燃超透水晶膜片,其特点是:高弹聚氯乙烯耐候阻燃超透水晶膜片包括以下组分,组成配比为:
改性聚氯乙烯树脂10-30PHR或弹性剂2-8PHR。
本发明高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法还可以采用如下技术方案:
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特点是:改性聚氯乙烯树脂是二元氯醋树脂,弹性剂为液体丁腈橡胶、乙烯-醋酸乙烯共聚物的一种。
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特点是:聚氯乙烯树脂是聚合度为1300和聚合度为1600—1800的一种或混合体系;主增塑剂为邻苯二甲酸二辛酯;辅助增塑剂为已二酸二辛酯;热稳定剂为钙锌复合稳定剂;抗氧剂为双酚A或无毒无味亚磷酸酯;爽手剂为芥酸酰胺或乙撑双硬脂酰胺;加工助剂为丙烯酸酯类共聚物;阻燃剂为磷系阻燃剂磷酸三苯酯。
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特点是:加工助剂丙烯酸酯类共聚物,为加工助剂P551。
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特点是:钙锌复合稳定剂为20℃折光率1.52-1.57的环保钙锌复合稳定剂。
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特点是:着色剂为群青、永固紫、桃红中的一种或复配。
本发明的目的之二是提供一种具有制备工艺简单、可控性好,制得产品不仅透明性好,而且高温不粘连,低温柔韧性,蠕变性好等特点的高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法。
本发明高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法所采取的技术方案是:
一种高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其特点是:高弹聚氯乙烯耐候阻燃超透水晶膜片的制备过程包括以下工艺步骤:
(1)捏合料制备:将聚氯乙烯树脂、增塑剂、热稳定剂、抗氧剂、爽手剂、加工助剂及着色剂计量投料后,进行混合,混合均匀后转入冷搅冷却;弹性剂在混合结束前或进入冷搅时加入;
(2)塑化:将步骤(1)所得的混合物投料到行星挤出机进行塑化;
(3)压延:将步骤(2)所得的塑化完全的物料,投入过滤机过滤后喂料给压延机;压延制得薄膜;
(4)净化定型:薄膜经引离进入充满软化水的净化水槽冷却定型并洗掉表面析出物;
(5)挤水、干燥:PVC高弹水晶膜经水槽净化后,经过挤水辊,将附着在膜表面大量水挤掉,经过通有热蒸汽的辊筒,使得薄膜表面的微量水完全蒸发;
(6)冷却、卷取:热的PVC高弹水晶膜经过通有冷却水或者冷冻水的辊筒完全冷却后,加压卷取,制得高弹聚氯乙烯耐候阻燃超透水晶膜片。
本发明高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法还可以采用如下技术方案:
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其特点是:高弹聚氯乙烯耐候阻燃超透水晶膜片制备时,对厚度>0.5mm制品,需要贴合工艺,冷却、卷取后制成的膜进行多层高温贴合成片材。
所述的高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其特点是:捏合料制备时,混合终止温度为90-120℃;冷搅终止温度为35-45℃;行星挤出机各区温度为150-180℃;过滤机各区温度为165-170℃;压延机温度为180-210℃;水槽温度为40-60℃;干燥段热蒸汽的辊筒温度为80-130℃;卷取速度为30-70m/min。
本发明具有的优点和积极效果是:
高弹聚氯乙烯耐候阻燃超透水晶膜片及其制备方法由于采用了本发明全新的技术方案,与现有技术相比,本发明配方采用树脂、弹性剂改性,结合较高温加工、多组热处理工艺,制得了聚氯乙烯高弹水晶膜,在-40℃至40℃温度范围内,都能够保持较高的柔韧性和通透性,手感爽滑,力学性能、伸缩回弹性好,阻燃,环保。在配方上选用聚合度为1300和1600—1800共混的树脂体系,长链高分子链段物理缠结点多,具有形状记忆功能,保证薄膜恢复初始形状,能够赋予产品更好的弹性和弹性恢复;可根据实际需要调整二者比例,既保证制品的弹性和透明度,又保证加工容易。选用二元氯醋树脂、丁腈橡胶、乙烯-醋酸乙烯共聚物进行改性,由于所选用改性剂能与PVC形成一种特殊的两相结构,在受到冲击、弯曲时改性剂能诱发银纹和剪切带,形成裂纹来吸收能量,而在裂纹扩展时,改性剂又能发生弹性形变来阻止裂纹的扩展,从而使得改性后的聚氯乙烯的弹性得到极大地增强。选用折光率(20℃)为1.52-1.57的环保钙锌热稳定剂,环保安全。在工艺上增加工艺控制点,采用过水透工艺,薄膜经引离进入充满软化水的净化水槽冷却定型并洗掉表面析出物,保证薄膜透明度。
具体实施方式
为能进一步了解本发明的发明内容、特点及功效,兹例举以下实施例,并详细说明如下:
实施例1
一种高弹聚氯乙烯耐候阻燃超透水晶膜片,包括各组分配比为:
其中,通用聚氯乙烯树脂是聚合度为1300和1600的PVC树脂按1:1比例混合;主增塑剂为邻苯二甲酸二辛脂;辅助增塑剂为已二酸二辛酯;抗氧剂为双酚A;弹性剂为液体丁腈橡胶;爽手剂为芥酸酰胺;加工助剂为P551;阻燃剂为磷酸三苯酯;着色剂为群青。
实施例2
高弹聚氯乙烯耐候阻燃超透水晶膜片,包括各组分配比为
其中,通用聚氯乙烯树脂是聚合度为1300的PVC树脂;改性聚氯乙烯树脂是二元氯醋树脂;主增塑剂为邻苯二甲酸二辛脂;辅助增塑剂为已二酸二辛酯;抗氧剂为双酚A;;爽手剂为乙撑双硬脂酰胺;加工助剂为P551;阻燃剂为磷酸三苯酯;着色剂为永固紫。
实施例3
一种高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其制备过程包括以下步骤:
聚氯乙烯树脂、增塑剂、热稳定剂、抗氧剂、爽手剂、加工助剂、阻燃剂、着色剂计量后,进行高速混合,高速混合均匀后转入冷搅冷却;高搅出料温度为110℃;混合料投料到行星挤出机进行塑化,行星挤出机各区温度为170-200℃;塑化完全的物料,投入过滤机过滤并喂料给压延机;过滤机各区温度为165-170℃;压延机温度为优选180-220℃;物料经过压延制成规定尺寸规格的薄膜,经引离进入充满软化水的净化水槽,温度为40-60℃,洗掉表面析出物,并得到冷却定型。PVC高弹水晶压延膜经水槽净化后,经过挤水辊,将附着在膜表面大量水挤掉,然后通过通有热蒸汽的辊筒,使得薄膜表面的微量水完全蒸发。最后PVC高弹水晶膜经过通有冷却水或者冷冻水的辊筒完全冷却后,加压卷取,检验、包装制得聚氯乙烯高弹水晶膜片。
本实施例配方采用的树脂、弹性剂改性,可根据实际需要灵活变化调控,结合较高温加工、多组热处理工艺,增加工艺控制点;制得的聚氯乙烯耐候高弹超透水晶压延膜(片)产品具有透明度好,高温手感爽滑,低温柔韧性及回弹性好,力学性能高,阻燃,环保安全等优点。本实施例产品适合于产品视窗、高档箱包、运动鞋、凉鞋等品质要求较高的领域广泛应用。
Claims (9)
1.一种高弹聚氯乙烯耐候阻燃超透水晶膜片,其特征是:高弹聚氯乙烯耐候阻燃超透水晶膜片包括以下组分,组成配比为:
改性聚氯乙烯树脂10-30PHR或弹性剂2-8PHR。
2.根据权利要求1所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特征是:改性聚氯乙烯树脂是二元氯醋树脂,弹性剂为液体丁腈橡胶、乙烯-醋酸乙烯共聚物的一种。
3.根据权利要求1或2所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特征是:聚氯乙烯树脂是聚合度为1300和聚合度为1600—1800的一种或混合体系;主增塑剂为邻苯二甲酸二辛酯;辅助增塑剂为已二酸二辛酯;热稳定剂为钙锌复合稳定剂;抗氧剂为双酚A或无毒无味亚磷酸酯;爽手剂为芥酸酰胺或乙撑双硬脂酰胺;加工助剂为丙烯酸酯类共聚物;阻燃剂为磷系阻燃剂磷酸三苯酯。
4.根据权利要求3所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特征是:加工助剂丙烯酸酯类共聚物,为加工助剂P551。
5.根据权利要求3所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特征是:钙锌复合稳定剂为20℃折光率1.52-1.57的环保钙锌复合稳定剂。
6.根据权利要求1所述的高弹聚氯乙烯耐候阻燃超透水晶膜片,其特征是:着色剂为群青、永固紫、桃红中的一种或复配。
7.根据权利要求1所述的高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其特征是:高弹聚氯乙烯耐候阻燃超透水晶膜片的制备过程包括以下工艺步骤:
(1)捏合料制备:将聚氯乙烯树脂、增塑剂、热稳定剂、抗氧剂、爽手剂、加工助剂、阻燃剂、着色剂计量投料后,进行混合,混合均匀后转入冷搅冷却;弹性剂在混合结束前或进入冷搅时加入;
(2)塑化:将步骤(1)所得的混合物投料到行星挤出机进行塑化;
(3)压延:将步骤(2)所得的塑化完全的物料,投入过滤机过滤后喂料给压延机;压延制得薄膜;
(4)净化定型:薄膜经引离进入充满软化水的净化水槽冷却定型并洗掉表面析出物;
(5)挤水、干燥:PVC高弹水晶膜经水槽净化后,经过挤水辊,将附着在膜表面大量水挤掉,经过通有热蒸汽的辊筒,使得薄膜表面的微量水完全蒸发;
(6)冷却、卷取:热的PVC高弹水晶膜经过通有冷却水或者冷冻水的辊筒完全冷却后,加压卷取,制得高弹聚氯乙烯耐候阻燃超透水晶膜片。
8.根据权利要求7所述的高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其特征是:高弹聚氯乙烯耐候阻燃超透水晶膜片制备时,对厚度>0.5mm制品,需要贴合工艺,冷却、卷取后制成的膜进行多层高温贴合成片材。
9.根据权利要求7或8所述的高弹聚氯乙烯耐候阻燃超透水晶膜片的制备方法,其特征是:捏合料制备时,混合终止温度为90-120℃;冷搅终止温度为35-45℃;行星挤出机各区温度为150-180℃;过滤机各区温度为165-170℃;压延机温度为180-210℃;水槽温度为40-60℃;干燥段热蒸汽的辊筒温度为80-130℃;卷取速度为30-70m/min。
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