CN109082035A - 一种抗老化pvc墙板及其加工工艺 - Google Patents

一种抗老化pvc墙板及其加工工艺 Download PDF

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CN109082035A
CN109082035A CN201810898832.8A CN201810898832A CN109082035A CN 109082035 A CN109082035 A CN 109082035A CN 201810898832 A CN201810898832 A CN 201810898832A CN 109082035 A CN109082035 A CN 109082035A
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缪岩和
缪农
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Bengbu Xinsheng New Material Technology Co Ltd
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Abstract

本发明公开了一种抗老化PVC墙板及其加工工艺,涉及PVC墙板技术领域,该PVC墙板,包含以下重量份的原料:PVC树脂40‑50份、丙烯酸树脂10‑20份、稀土复合稳定剂2‑7份、亚乙基双硬脂酸酰胺0.2‑0.7份、氧化聚乙烯蜡0.5‑1.5份、发泡剂0.5‑1.5份、氧化锌2‑10份、煅烧高岭土1‑5份、改性云母石粉1‑5份、滑石粉2‑7份、陶瓷微粉1‑5份、环氧硬脂酸辛酯2‑7份、聚氨酯2‑7份、抗老化剂2‑7份。本发明制得的PVC墙板具有良好的抗老化性能,能够避免PVC墙板长期使用后老化、脆化,并且本发明所制得的PVC墙板使用寿命长,具有较好的强度、柔韧度、耐磨性、稳定性以及环保性等特点,保证了PVC墙板的品质,使其综合性能和市场竞争力有很大的提升。

Description

一种抗老化PVC墙板及其加工工艺
技术领域:
本发明涉及PVC墙板技术领域,具体涉及一种抗老化PVC墙板及其加工工艺。
背景技术:
PVC,主要成份为聚氯乙烯,另外加入其他成分来增强其耐热性、韧性、延展性等。它是当今世界上深受喜爱、颇为流行并且也被广泛应用的一种合成材料。它的全球使用量在各种合成材料中高居第二。据统计,仅仅1995年一年,PVC在欧洲的生产量就有五百万吨左右,而其消费量则为五百三十万吨。在德国,PVC的生产量和消费量平均为一百四十万吨。
PVC墙板,是以聚氯乙烯树脂为基料,加入一定量抗老化剂、改性剂等助剂,经一定的工艺而制成的。目前PVC墙板正逐渐取代传统的墙面建材,墙板的外观可根据产品设计需求进行多种塑造,生产出花色丰富、纹理多样、色彩鲜艳的墙板。但是目前市场上PVC墙板所用材料成分传统,使用久了会出现老化、炸裂现象。
发明内容:
本发明所要解决的技术问题在于提供一种抗老化PVC墙板及其加工工艺。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种抗老化PVC墙板,包含以下重量份的原料:PVC树脂40-50份、丙烯酸树脂10-20份、稀土复合稳定剂2-7份、亚乙基双硬脂酸酰胺0.2-0.7份、氧化聚乙烯蜡0.5-1.5份、发泡剂0.5-1.5份、氧化锌2-10份、煅烧高岭土1-5份、改性云母石粉1-5份、滑石粉2-7份、陶瓷微粉1-5份、环氧硬脂酸辛酯2-7份、聚氨酯2-7份、抗老化剂2-7份。
所述抗老化PVC墙板,优选以下重量份的原料:PVC树脂45份、丙烯酸树脂15份、稀土复合稳定剂5份、N,N-亚乙基双蓖麻醇酸酰胺0.5份、氧化聚乙烯蜡1份、发泡剂1份、氧化锌6份、煅烧高岭土3份、改性云母石粉3份、滑石粉5份、陶瓷微粉2.5份、环氧硬脂酸辛酯4份、聚氨酯4份、抗老化剂5份。
所述稀土复合稳定剂包含以下重量份的原料:氯化稀土10-20份、混合稀土10-20份、纳米碳酸钙10-20份、硫酸锌5-15份、硬脂酸钙5-15份、硬脂酸钡5-15份、氢氧化钠10-20份、季戊四醇酯0.5-1.5份、硬脂酸2-7份、单硬脂酸甘油酯2-7份;其制备方法为:将氯化稀土、混合稀土、纳米碳酸钙置于量瓶中,用去离子水溶解完全,超声分散0.5-1h,然后加入硫酸锌、硬脂酸钙、硬脂酸钡、氢氧化钠,将量瓶置于磁力搅拌器中,边搅拌边加热至80-100℃,恒温反应0.5-1.5h,再加入硬脂酸、单硬脂酸甘油酯继续反应0.5h,再加入季戊四醇酯反应1-2.5h,取出,105℃干燥,研磨,过200目筛,即得。
所述发泡剂为AC发泡剂和碳酸氢钠,其质量比为2-3:1。
所述改性云母石粉的制备方法为:将云母石研磨,过300-400目筛,然后加入环氧树脂、羧甲基纤维素,用去离子水溶解完全,混匀后利用微波处理器微波回流处理5-10min,再加入聚山梨酯、聚乙二醇、纳米二氧化钛混合均匀继续微波处理5-10min,静置5-10min后继续微波回流处理5-10min,接着转入5-10℃环境中静置20-30min后再次微波回流处理5-10min,静置至室温,于600r/min下离心5-10min,过滤,将所得固体40℃真空干燥,研磨,过200目筛,即得。
所述云母石、环氧树脂、羧甲基纤维素、聚山梨酯、聚乙二醇、纳米二氧化钛的重量比为20-25:1-2:5-10:3-5:1-3:1-2。
所述微波处理器的工作条件为微波频率2450MHz、输出功率800W。
所述抗老化剂由以下重量份的原料组成:氯化聚乙烯5-10份、氢化松香季戊四醇酯2-7份、对苯二胺35-45份、对甲酚5-15份、纳米三氧化二铝1-5份、氧化锌1-10份、纳米二氧化钛1-5份、纳米炭黑1-10份、有机膨润土1-10份、凹凸棒土5-10份、吐温805-10份、纳米硅溶胶2-7份;其制备方法:将氯化聚乙烯、氢化松香季戊四醇酯、有机膨润土、凹凸棒土加入到高速混合机进行混合,在60-70℃时于高转速下加入对苯二胺、对甲酚、纳米三氧化二铝、氧化锌、纳米二氧化钛、纳米炭黑;在80℃左右时于高转速下加入吐温80和纳米硅溶胶;在90-100℃时停机,将混合均匀的原料送入送入冷冻干燥机中,干燥所得固体转移至马弗炉400-450℃焙烧活化3-5h,冷却,送入球磨机中,球磨6-8h后过300目筛,即得。
本发明还提供了一种抗老化PVC墙板的加工工艺,包括以下步骤:
(1)按照上述重量份配比称取各原料;
(2)将PVC树脂、丙烯酸树脂、稀土复合稳定剂加入高速混合机中,盖好盖;先低速启动电机,正常后进入高速混合;
(3)在60℃左右时,于高转速下将环氧硬脂酸辛酯、聚氨酯、亚乙基双硬脂酸酰胺加入料中;
(4)在80℃左右时,于高转速下将发泡剂、氧化锌、煅烧高岭土、改性云母石粉、滑石粉、陶瓷微粉、抗老化剂加入料中;
(5)在90℃左右时,于高转速下将氧化聚乙烯蜡加入料中;
(6)在90℃-100℃左右时,停机出料,将混合后的物料送入冷冻设备,进行冷冻处理;
(7)将步骤(6)冷冻后的物料送入双螺杆挤出机加热熔融,挤出至模具成型,得到PVC墙板;
(8)启模取件,并对所制得的PVC墙板进行修边、切割;
(9)对所制得的PVC墙板进行检验,合格后方可出厂。
进一步地,所述步骤(6)中的冷冻处理为将物料放入零下20℃的环境中冷冻2-3h,然后取出物料,待温度恢复至零下5-10℃时,将其放入零下5-10℃的环境继续冷冻3-5h。
本发明的有益效果是:
(1)本发明制得的PVC墙板具有良好的抗老化性能,能够避免PVC墙板长期使用后老化、脆化,并且本发明所制得的PVC墙板使用寿命长,具有较好的强度、柔韧度、耐磨性等特点,保证了PVC墙板的品质;
(2)本发明在原料中添加了改性云母石粉、陶瓷微粉等物质,利用它们固有的耐磨性和坚固性,增强PVC墙板的耐磨性、硬度等,此外,还添加了稀土复合稳定剂,使PVC墙板的稳定性进一步增加,从而延长使用寿命;
(3)本发明的制作过程中还采用了冷冻处理,在原料经过充分的混合后,再进行冷冻处理,能够增加PVC墙板的韧性、坚固性、抗老化性及稳定性,使得所制得的PVC墙板能够适应不同的环境,使其适用的地域更广;
(4)本发明制得的PVC墙板具有优异的力学性能、稳定性以及环保性等,从而使其综合性能和市场竞争力有很大的提升。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例1
一种抗老化PVC墙板,包含以下重量份的原料:PVC树脂40份、丙烯酸树脂20份、稀土复合稳定剂7份、亚乙基双硬脂酸酰胺0.2份、氧化聚乙烯蜡0.5份、AC发泡剂1份、碳酸氢钠0.5份、氧化锌2份、煅烧高岭土5份、改性云母石粉1份、滑石粉2份、陶瓷微粉5份、环氧硬脂酸辛酯7份、聚氨酯2份、抗老化剂7份。
稀土复合稳定剂包含以下重量份的原料:氯化稀土15份、混合稀土15份、纳米碳酸钙15份、硫酸锌10份、硬脂酸钙10份、硬脂酸钡10份、氢氧化钠14份、季戊四醇酯1份、硬脂酸5份、单硬脂酸甘油酯5份;其制备方法为:将氯化稀土、混合稀土、纳米碳酸钙置于量瓶中,用去离子水溶解完全,超声分散1h,然后加入硫酸锌、硬脂酸钙、硬脂酸钡、氢氧化钠,将量瓶置于磁力搅拌器中,边搅拌边加热至90℃,恒温反应1.5h,再加入硬脂酸、单硬脂酸甘油酯继续反应0.5h,再加入季戊四醇酯反应2h,取出,105℃干燥,研磨,过200目筛,即得。
改性云母石粉的制备方法为:将云母石25份研磨,过400目筛,然后加入环氧树脂2份、羧甲基纤维素7份,用去离子水溶解完全,混匀后利用微波处理器微波回流处理10min,再加入聚山梨酯4份、聚乙二醇2份、纳米二氧化钛2份混合均匀继续微波处理10min,静置10min后继续微波回流处理10min,接着转入8℃环境中静置25min后再次微波回流处理10min,静置至室温,于600r/min下离心10min,过滤,将所得固体40℃真空干燥,研磨,过200目筛,即得。
抗老化剂由以下重量份的原料组成:氯化聚乙烯6份、氢化松香季戊四醇酯5份、对苯二胺40份、对甲酚10份、纳米三氧化二铝3份、氧化锌5份、纳米二氧化钛3份、纳米炭黑5份、有机膨润土5份、凹凸棒土7份、吐温806份、纳米硅溶胶5份;其制备方法:将氯化聚乙烯、氢化松香季戊四醇酯、有机膨润土、凹凸棒土加入到高速混合机进行混合,在65℃时于高转速下加入对苯二胺、对甲酚、纳米三氧化二铝、氧化锌、纳米二氧化钛、纳米炭黑;在80℃时于高转速下加入吐温80和纳米硅溶胶;在95℃时停机,将混合均匀的原料送入送入冷冻干燥机中,干燥所得固体转移至马弗炉400℃焙烧活化5h,冷却,送入球磨机中,球磨8h后过300目筛,即得。
本发明还提供了一种抗老化PVC墙板的加工工艺,包括以下步骤:
(1)按照上述重量份配比称取各原料;
(2)将PVC树脂、丙烯酸树脂、稀土复合稳定剂加入高速混合机中,盖好盖;先低速启动电机,正常后进入高速混合;
(3)在60℃左右时,于高转速下将环氧硬脂酸辛酯、聚氨酯、亚乙基双硬脂酸酰胺加入料中;
(4)在80℃左右时,于高转速下将发泡剂、氧化锌、煅烧高岭土、改性云母石粉、滑石粉、陶瓷微粉、抗老化剂加入料中;
(5)在90℃左右时,于高转速下将氧化聚乙烯蜡加入料中;
(6)在90℃-100℃左右时,停机出料,将混合后的物料送入冷冻设备,进行冷冻处理;
(7)将步骤(6)冷冻后的物料送入双螺杆挤出机加热熔融,挤出至模具成型,得到PVC墙板;
(8)启模取件,并对所制得的PVC墙板进行修边、切割;
(9)对所制得的PVC墙板进行检验,合格后方可出厂。
步骤(6)中的冷冻处理为将物料放入零下20℃的环境中冷冻3h,然后取出物料,待温度恢复至零下10℃时,将其放入零下10℃的环境继续冷冻4h。
实施例2
一种抗老化PVC墙板,包含以下重量份的原料:PVC树脂45份、丙烯酸树脂15份、稀土复合稳定剂5份、亚乙基双硬脂酸酰胺0.5份、氧化聚乙烯蜡1份、AC发泡剂0.75份、碳酸氢钠0.25份、氧化锌6份、煅烧高岭土3份、改性云母石粉3份、滑石粉5份、陶瓷微粉2.5份、环氧硬脂酸辛酯4份、聚氨酯4份、抗老化剂5份。
稀土复合稳定剂包含以下重量份的原料:氯化稀土15份、混合稀土15份、纳米碳酸钙15份、硫酸锌10份、硬脂酸钙10份、硬脂酸钡10份、氢氧化钠14份、季戊四醇酯1份、硬脂酸5份、单硬脂酸甘油酯5份;其制备方法为:将氯化稀土、混合稀土、纳米碳酸钙置于量瓶中,用去离子水溶解完全,超声分散1h,然后加入硫酸锌、硬脂酸钙、硬脂酸钡、氢氧化钠,将量瓶置于磁力搅拌器中,边搅拌边加热至90℃,恒温反应1.5h,再加入硬脂酸、单硬脂酸甘油酯继续反应0.5h,再加入季戊四醇酯反应2h,取出,105℃干燥,研磨,过200目筛,即得。
改性云母石粉的制备方法为:将云母石25份研磨,过400目筛,然后加入环氧树脂2份、羧甲基纤维素7份,用去离子水溶解完全,混匀后利用微波处理器微波回流处理10min,再加入聚山梨酯4份、聚乙二醇2份、纳米二氧化钛2份混合均匀继续微波处理10min,静置10min后继续微波回流处理10min,接着转入8℃环境中静置25min后再次微波回流处理10min,静置至室温,于600r/min下离心10min,过滤,将所得固体40℃真空干燥,研磨,过200目筛,即得。
抗老化剂由以下重量份的原料组成:氯化聚乙烯6份、氢化松香季戊四醇酯5份、对苯二胺40份、对甲酚10份、纳米三氧化二铝3份、氧化锌5份、纳米二氧化钛3份、纳米炭黑5份、有机膨润土5份、凹凸棒土7份、吐温806份、纳米硅溶胶5份;其制备方法:将氯化聚乙烯、氢化松香季戊四醇酯、有机膨润土、凹凸棒土加入到高速混合机进行混合,在65℃时于高转速下加入对苯二胺、对甲酚、纳米三氧化二铝、氧化锌、纳米二氧化钛、纳米炭黑;在80℃时于高转速下加入吐温80和纳米硅溶胶;在95℃时停机,将混合均匀的原料送入送入冷冻干燥机中,干燥所得固体转移至马弗炉400℃焙烧活化5h,冷却,送入球磨机中,球磨8h后过300目筛,即得。
本发明还提供了一种抗老化PVC墙板的加工工艺,包括以下步骤:
(1)按照上述重量份配比称取各原料;
(2)将PVC树脂、丙烯酸树脂、稀土复合稳定剂加入高速混合机中,盖好盖;先低速启动电机,正常后进入高速混合;
(3)在60℃左右时,于高转速下将环氧硬脂酸辛酯、聚氨酯、亚乙基双硬脂酸酰胺加入料中;
(4)在80℃左右时,于高转速下将发泡剂、氧化锌、煅烧高岭土、改性云母石粉、滑石粉、陶瓷微粉、抗老化剂加入料中;
(5)在90℃左右时,于高转速下将氧化聚乙烯蜡加入料中;
(6)在90℃-100℃左右时,停机出料,将混合后的物料送入冷冻设备,进行冷冻处理;
(7)将步骤(6)冷冻后的物料送入双螺杆挤出机加热熔融,挤出至模具成型,得到PVC墙板;
(8)启模取件,并对所制得的PVC墙板进行修边、切割;
(9)对所制得的PVC墙板进行检验,合格后方可出厂。
步骤(6)中的冷冻处理为将物料放入零下20℃的环境中冷冻3h,然后取出物料,待温度恢复至零下10℃时,将其放入零下10℃的环境继续冷冻4h。
实施例3
一种抗老化PVC墙板,包含以下重量份的原料:PVC树脂50份、丙烯酸树脂10份、稀土复合稳定剂2份、亚乙基双硬脂酸酰胺0.7份、氧化聚乙烯蜡1.5份、AC发泡剂0.35份、碳酸氢钠0.15份、氧化锌10份、煅烧高岭土1份、改性云母石粉5份、滑石粉7份、陶瓷微粉1份、环氧硬脂酸辛酯2份、聚氨酯7份、抗老化剂2份。
稀土复合稳定剂包含以下重量份的原料:氯化稀土15份、混合稀土15份、纳米碳酸钙15份、硫酸锌10份、硬脂酸钙10份、硬脂酸钡10份、氢氧化钠14份、季戊四醇酯1份、硬脂酸5份、单硬脂酸甘油酯5份;其制备方法为:将氯化稀土、混合稀土、纳米碳酸钙置于量瓶中,用去离子水溶解完全,超声分散1h,然后加入硫酸锌、硬脂酸钙、硬脂酸钡、氢氧化钠,将量瓶置于磁力搅拌器中,边搅拌边加热至90℃,恒温反应1.5h,再加入硬脂酸、单硬脂酸甘油酯继续反应0.5h,再加入季戊四醇酯反应2h,取出,105℃干燥,研磨,过200目筛,即得。
改性云母石粉的制备方法为:将云母石25份研磨,过400目筛,然后加入环氧树脂2份、羧甲基纤维素7份,用去离子水溶解完全,混匀后利用微波处理器微波回流处理10min,再加入聚山梨酯4份、聚乙二醇2份、纳米二氧化钛2份混合均匀继续微波处理10min,静置10min后继续微波回流处理10min,接着转入8℃环境中静置25min后再次微波回流处理10min,静置至室温,于600r/min下离心10min,过滤,将所得固体40℃真空干燥,研磨,过200目筛,即得。
抗老化剂由以下重量份的原料组成:氯化聚乙烯6份、氢化松香季戊四醇酯5份、对苯二胺40份、对甲酚10份、纳米三氧化二铝3份、氧化锌5份、纳米二氧化钛3份、纳米炭黑5份、有机膨润土5份、凹凸棒土7份、吐温806份、纳米硅溶胶5份;其制备方法:将氯化聚乙烯、氢化松香季戊四醇酯、有机膨润土、凹凸棒土加入到高速混合机进行混合,在65℃时于高转速下加入对苯二胺、对甲酚、纳米三氧化二铝、氧化锌、纳米二氧化钛、纳米炭黑;在80℃时于高转速下加入吐温80和纳米硅溶胶;在95℃时停机,将混合均匀的原料送入送入冷冻干燥机中,干燥所得固体转移至马弗炉400℃焙烧活化5h,冷却,送入球磨机中,球磨8h后过300目筛,即得。
本发明还提供了一种抗老化PVC墙板的加工工艺,包括以下步骤:
(1)按照上述重量份配比称取各原料;
(2)将PVC树脂、丙烯酸树脂、稀土复合稳定剂加入高速混合机中,盖好盖;先低速启动电机,正常后进入高速混合;
(3)在60℃左右时,于高转速下将环氧硬脂酸辛酯、聚氨酯、亚乙基双硬脂酸酰胺加入料中;
(4)在80℃左右时,于高转速下将发泡剂、氧化锌、煅烧高岭土、改性云母石粉、滑石粉、陶瓷微粉、抗老化剂加入料中;
(5)在90℃左右时,于高转速下将氧化聚乙烯蜡加入料中;
(6)在90℃-100℃左右时,停机出料,将混合后的物料送入冷冻设备,进行冷冻处理;
(7)将步骤(6)冷冻后的物料送入双螺杆挤出机加热熔融,挤出至模具成型,得到PVC墙板;
(8)启模取件,并对所制得的PVC墙板进行修边、切割;
(9)对所制得的PVC墙板进行检验,合格后方可出厂。
步骤(6)中的冷冻处理为将物料放入零下20℃的环境中冷冻3h,然后取出物料,待温度恢复至零下10℃时,将其放入零下10℃的环境继续冷冻4h。
对照例
以现有市售PVC墙板为对照例。
分别对实施例1-3、对照例的PVC墙板进行以下性能测试:(a)将待测PVC墙板浸泡在水中48h,测量其边长的形变率,结果如表1;(b)按照国家标准GB/T1040.1-2006、GB11548-1989和GB/T16422.1-2006的检测标准对待测PVC墙板进行力学性能测试,结果如表2、表3。
表1
测试项目 实施例1 实施例2 实施例3 对照例
尺寸变化率% 0.25 0.18 0.29 4.31
表2
表3
从表1中可知,本发明所制得的PVC墙板具有防水防潮的功效,且性能优异;从表2、表3中可知,本发明所制得的PVC墙板具有较强的拉伸强度、抗冲击强度和较高的断裂伸长率,其力学性能均优于目前市场上所售的PVC墙板,且经过抗老化试验后,其力学性能变化率较小,对比目前市场上所售的PVC墙板,其性能表现优异,具有很好的市场价值。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (10)

1.一种抗老化PVC墙板,其特征在于:包含以下重量份的原料:PVC树脂40-50份、丙烯酸树脂10-20份、稀土复合稳定剂2-7份、亚乙基双硬脂酸酰胺0.2-0.7份、氧化聚乙烯蜡0.5-1.5份、发泡剂0.5-1.5份、氧化锌2-10份、煅烧高岭土1-5份、改性云母石粉1-5份、滑石粉2-7份、陶瓷微粉1-5份、环氧硬脂酸辛酯2-7份、聚氨酯2-7份、抗老化剂2-7份。
2.根据权利要求1所述的抗老化PVC墙板,其特征在于:优选以下重量份的原料:PVC树脂45份、丙烯酸树脂15份、稀土复合稳定剂5份、N,N-亚乙基双蓖麻醇酸酰胺0.5份、氧化聚乙烯蜡1份、发泡剂1份、氧化锌6份、煅烧高岭土3份、改性云母石粉3份、滑石粉5份、陶瓷微粉2.5份、环氧硬脂酸辛酯4份、聚氨酯4份、抗老化剂5份。
3.根据权利要求1所述的抗老化PVC墙板,其特征在于:所述稀土复合稳定剂包含以下重量份的原料:氯化稀土10-20份、混合稀土10-20份、纳米碳酸钙10-20份、硫酸锌5-15份、硬脂酸钙5-15份、硬脂酸钡5-15份、氢氧化钠10-20份、季戊四醇酯0.5-1.5份、硬脂酸2-7份、单硬脂酸甘油酯2-7份;其制备方法为:将氯化稀土、混合稀土、纳米碳酸钙置于量瓶中,用去离子水溶解完全,超声分散0.5-1h,然后加入硫酸锌、硬脂酸钙、硬脂酸钡、氢氧化钠,将量瓶置于磁力搅拌器中,边搅拌边加热至80-100℃,恒温反应0.5-1.5h,再加入硬脂酸、单硬脂酸甘油酯继续反应0.5h,再加入季戊四醇酯反应1-2.5h,取出,105℃干燥,研磨,过200目筛,即得。
4.根据权利要求1所述的抗老化PVC墙板,其特征在于:所述发泡剂为AC发泡剂和碳酸氢钠,其质量比为2-3:1。
5.根据权利要求1所述的抗老化PVC墙板,其特征在于:所述改性云母石粉的制备方法为:将云母石研磨,过300-400目筛,然后加入环氧树脂、羧甲基纤维素,用去离子水溶解完全,混匀后利用微波处理器微波回流处理5-10min,再加入聚山梨酯、聚乙二醇、纳米二氧化钛混合均匀继续微波处理5-10min,静置5-10min后继续微波回流处理5-10min,接着转入5-10℃环境中静置20-30min后再次微波回流处理5-10min,静置至室温,于600r/min下离心5-10min,过滤,将所得固体40℃真空干燥,研磨,过200目筛,即得。
6.根据权利要求5所述的抗老化PVC墙板,其特征在于:所述云母石、环氧树脂、羧甲基纤维素、聚山梨酯、聚乙二醇、纳米二氧化钛的重量比为20-25:1-2:5-10:3-5:1-3:1-2。
7.根据权利要求5所述的抗老化PVC墙板,其特征在于:所述微波处理器的工作条件为微波频率2450MHz、输出功率800W。
8.根据权利要求1所述的抗老化PVC墙板,其特征在于:所述抗老化剂由以下重量份的原料组成:氯化聚乙烯5-10份、氢化松香季戊四醇酯2-7份、对苯二胺35-45份、对甲酚5-15份、纳米三氧化二铝1-5份、氧化锌1-10份、纳米二氧化钛1-5份、纳米炭黑1-10份、有机膨润土1-10份、凹凸棒土5-10份、吐温805-10份、纳米硅溶胶2-7份;其制备方法:将氯化聚乙烯、氢化松香季戊四醇酯、有机膨润土、凹凸棒土加入到高速混合机进行混合,在60-70℃时于高转速下加入对苯二胺、对甲酚、纳米三氧化二铝、氧化锌、纳米二氧化钛、纳米炭黑;在80℃左右时于高转速下加入吐温80和纳米硅溶胶;在90-100℃时停机,将混合均匀的原料送入送入冷冻干燥机中,干燥所得固体转移至马弗炉400-450℃焙烧活化3-5h,冷却,送入球磨机中,球磨6-8h后过300目筛,即得。
9.一种抗老化PVC墙板的加工工艺,其特征在于:包括以下步骤:
(1)按照上述重量份配比称取各原料;
(2)将PVC树脂、丙烯酸树脂、稀土复合稳定剂加入高速混合机中,盖好盖;先低速启动电机,正常后进入高速混合;
(3)在60℃左右时,于高转速下将环氧硬脂酸辛酯、聚氨酯、亚乙基双硬脂酸酰胺加入料中;
(4)在80℃左右时,于高转速下将发泡剂、氧化锌、煅烧高岭土、改性云母石粉、滑石粉、陶瓷微粉、抗老化剂加入料中;
(5)在90℃左右时,于高转速下将氧化聚乙烯蜡加入料中;
(6)在90℃-100℃左右时,停机出料,将混合后的物料送入冷冻设备,进行冷冻处理;
(7)将步骤(6)冷冻后的物料送入双螺杆挤出机加热熔融,挤出至模具成型,得到PVC墙板;
(8)启模取件,并对所制得的PVC墙板进行修边、切割;
(9)对所制得的PVC墙板进行检验,合格后方可出厂。
10.根据权利要求9所述的抗老化PVC墙板的加工工艺,其特征在于:所述步骤(6)中的冷冻处理为将物料放入零下20℃的环境中冷冻2-3h,然后取出物料,待温度恢复至零下5-10℃时,将其放入零下5-10℃的环境继续冷冻3-5h。
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