CN1205263C - 用于冰箱门密封垫的聚氯乙烯组合物 - Google Patents
用于冰箱门密封垫的聚氯乙烯组合物 Download PDFInfo
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Abstract
本发明提供用于冰箱门密封垫的聚氯乙烯组合物,其基于100重量份PVC包括0.01-1.0重量份的至少一种杀生物剂,该杀生物剂选自甲基-2-苯并咪唑氨基甲酸酯、2-(4-三唑基)-苯并咪唑、α-[2-(4-氯苯基)-乙基]-α-(1,1-二甲基乙基)-1H-1,2,4-三唑基-1-乙醇和锌双(2-吡啶基硫-1-氧化物)。
Description
技术领域
本发明涉及一种用于冰箱门密封垫的聚氯乙烯(PVC)组合物,并涉及一种使用该组合物的冰箱门密封垫的制备方法,而且特别涉及用于冰箱门密封垫的PVC组合物和采用该组合物的冰箱门密封垫的制备方法,所述组合物通过在PVC组合物中加入特定的杀生物剂来防止由于增塑剂的迁移而形成的霉菌或细菌。
背景技术
用于冰箱门密封垫的常规PVC组合物包括PVC、增塑剂、耐热剂、耐冷剂和耐侯性稳定剂、填充剂和颜料。密封垫是通过混料、复合并挤压成型来制备的。由于所述PVC具有粉末形状,采用增塑剂来使得PVC更为平滑,从而有利于生产工艺进行。
但是,经上述方法制备的PVC冰箱门密封垫存在迁移现象,这使得增塑剂在60-80℃时从密封垫中渗露出来。而且,在高于100℃的高温下,将有超过所述PVC密封垫总重量的1-2%的增塑剂出来。因此,一部分以ABS或HIPS材料制成的冰箱内部接触面极易被污染,而且由于在密封垫的表面上存在霉菌和细菌繁殖的足够空间,还出现了一个问题是,所述部分将变成黄色、蓝点(blue dot)或红色。
为了防止细菌的繁殖,在韩国未审定专利No.10-1993-023682中披露了加入10,10’-oxybisphenoxagene(商品名为Hokustar-HP,日本,Gitagooga furnitures)的一种霉菌预防剂,但其效果尚不够理想。
发明内容
因此,本发明的一个目的是要提供用于冰箱门密封垫的PVC组合物和一种采用该组合物的冰箱门密封垫的制备方法,该组合物通过向PVC中加入特定的杀生物剂来防止由于密封垫表面的霉菌或细菌繁殖引起的污染和变色。
为了实现所述和其他的优点并且根据所记载的本发明的目的,现提供用于冰箱门密封垫的PVC组合物,其基于100重量份PVC包括0.01-1.0重量份的甲基-2-苯并咪唑氨基甲酸酯、2-(4-三唑基)-苯并咪唑(benzimidazol)、α-[2-(4-氯苯基)-乙基]-α-(1,1-二甲基乙基)-1H-1,2,4-三唑基-1-乙醇和锌双(2-吡啶基硫-1-氧化物)。
结合所附图片,通过以下详述,本发明的其他目的、特征、方面和优点将更为显见。
具体实施方式
结合所附图片对本发明的优选实施例予以详述。
根据本发明,可采用聚合度约1300的聚氯乙烯。
本发明中所采用的杀生物剂防止了由增塑剂迁移引起的霉菌或细菌形成的污染及变色。以下的杀生物剂可用于本发明中。
甲基-2-苯并咪唑氨基甲酸酯(通用名称:多菌灵)
2-(4-三唑基)-苯并咪唑(通用名称:TBZ)
α-[2-(4-氯苯基)-乙基]-α-(1,1-二甲基乙基)-1H-1,2,4-三唑基-1-乙醇(通用名称:tebukonazol)
锌双(2-吡啶基硫-1-氧化物)(通用名称:zinc-pyrition)
作为杀生物剂,可使用一种简单化学化合物,并且可混合使用两种以上杀生物剂。本发明的混合两种以上化学化合物的杀生物剂可具有更佳的效果。杀生物剂的用量为基于100重量份PVC 0.01-1.0重量份。如果杀生物剂的用量低于0.01重量份,杀生物剂的效果将不太显著,并且如果大于1重量份,也无法获得更佳的效果。
在本发明的PVC组合物中,可加入其它一般添加剂。
加入增塑剂,可通过塑性流动对PVC大分子赋予流动性以使得挤压、压缩变形工艺更加容易,并通过降低聚合物硬度而增加韧性。
作为增塑剂,可使用邻苯二甲酸二辛酯(DOP)、己二酸二辛酯(dioctyl adiphate)(DOA)、邻苯二甲酸二异癸酯(DIP)和1,2,4-苯三酸三辛酯(trioctyl trimelitate)(TOTM),而且,基于100重量份PVC,一般使用30-80重量份或优选使用50-70重量份增塑剂。
而且,可加入稳定剂以使所述聚合物耐受制备或使用过程中的热、氧气和紫外线。稳定剂包括耐热稳定剂诸如硬脂酸钡、硬脂酸钙以及环氧化的豆油,包括耐冷稳定剂诸如月桂酸丁基锡络合物,并且还包括耐侯性稳定剂诸如有机亚磷酸盐酯基络合物。基于100重量份PVC,使用1-5重量份的稳定剂。
可加入填充剂以改善机械强度、尺寸稳定性、热变形温度、硬度和其它物理性质。作为本发明填充剂,优选使用CaCO3,并且基于100重量份PVC,加入5-50重量份并优选加入10-30重量份。
而且,可加入颜料以得到所需的颜色并基于100重量份PVC加入0.001-1重量份。例如,所述颜料包括二氧化钛、碳黑以及紫色颜料。
在制备本发明的图示中,一般使用Henschal混合器。上述PVC、其它添加剂以及颜料加入混合器中,保持混合器中温度为60-120℃,并以400rpm的低速搅拌1-2分钟。
增塑剂在50-100℃温度下导入混合物中,并在低速或在低速和高速交替下搅拌,优选在低速下搅拌。
然后,加入填充剂,并在105-110℃下制成制剂。该制剂经排出并给入冷却混合器中。所述制剂通过冷却至低于40℃处理,并获得粉状产品。
所述粉状产品被输送至提取器并被提取。
此后,通过实施例对本发明进行描述。
实施例1-6
如表1所示,200L Henscal混合器的油夹套温度保持在80℃,聚合度为1300的PVC和其它添加剂加入混合器。所述PVC混合物在400rpm低速下搅拌2分钟。然后,通过一增塑剂加热提升器以每分钟1kg增塑剂的速度加入,并在500rpm的速度下搅拌。碳酸钙(CaCO3)基填充剂加入以上所得混合物中,在110℃下制成制剂。所述制剂在125℃时排出并送至冷却混合器。然后,所得制剂通过冷却至低于40℃处理,并且制得粉状产品。所述粉状产品经挤压成型为密封垫。
表1
成分 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 实施例6 |
PVC(kg) | 100 | 100 | 100 | 100 | 100 | 100 |
DOP(kg) | 60 | 60 | 60 | 60 | 60 | 60 |
DOA(kg) | 4.6 | 5 | 6 | 4 | 8 | 7.5 |
TOTM(kg) | 5 | 4 | 3 | 6 | 2 | 2.5 |
环氧化的豆油(kg) | 1 | 1 | 1 | 1 | 1 | 1 |
BP-203S(kg) | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 |
硬脂酸(kg) | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 |
BZ-108(kg) | - | - | - | - | - | - |
CaCO3(kg) | 20 | 20 | 20 | 20 | 20 | 20 |
多菌灵(kg) | 0.05 | 0.05 | 0.05 | - | - | - |
TBZ(kg) | 0.05 | - | - | 0.05 | 0.05 | - |
Tebukonazol(kg) | - | 0.05 | - | 0.05 | - | 0.05 |
Zinc-pyridion(kg) | - | - | 0.05 | - | 0.05 | 0.05 |
TiO2(kg) | 2 | 2 | 2 | 2 | 2 | 2 |
碳黑(kg) | 0.0002 | 0.0002 | 0.0002 | 0.0002 | 0.0002 | 0.0002 |
H-蓝(kg) | 0.024 | 0.024 | 0.024 | 0.024 | 0.024 | 0.024 |
紫色颜料(kg) | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
由上述实施例中制得的产品的性能测定结果示于表2。
表2
特性 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 实施例6 |
Shoa A硬度 | 70 | 72 | 69 | 70 | 71 | 70 |
拉伸强度(kg/mm) | 1.49 | 0.92 | 0.97 | 1.05 | 1.39 | 1.28 |
延伸百分数%(200%↑) | 235 | 219 | 211 | 224 | 229 | 231 |
加热重量损失(%) | 3.12 | 2.58 | 3.10 | 2.87 | 2.64 | 2.46 |
粘合力 | 3.89 | 3.24 | 4.12 | 3.68 | 3.14 | 4.19 |
耐紫外线(ΔE) | 0.54 | 0.45 | 0.12 | 0.48 | 0.41 | 0.29 |
耐化学性 | 0 | 0 | 0 | 0 | 0 | 0 |
污染腐蚀 | 0 | 0 | 0 | 0 | 0 | 0 |
H2S变色 | 0 | 0 | 0 | 0 | 0 | 0 |
震荡烧瓶实验活细胞计数减少速度 | 94.47 | 92.63 | 91.31 | 90.79 | 90.57 | 91.35 |
晕圈实验耐环境性变形抑制环(mm) | 3(未发现菌丝体生长)6 | 3(未发现菌丝体生长)8 | 3(未发现菌丝体生长)6 | 3(未发现菌丝体生长)6 | 3(未发现菌丝体生长)8 | 3(未发现菌丝体生长)8 |
*抗菌实验:名为大肠杆菌(colon bacilli E-Coli)(ATCC 25922)
**抗霉菌实验:ASRM G-21
由实验结果可知,用作冰箱门密封垫的本发明的PVC组合物具有优良的性能,尤其其优点在于所述组合物能通过防止因增塑剂迁移引起的霉菌和细菌繁殖来防止密封垫的变形和变色。
尽管本发明可以不脱离本发明精神或实质的几个实施例来实现,可以理解的是,以上所述并不能对本发明构成限制,除非特别说明,本发明将由所附的权利要求予以限定,所有不脱离本发明精神的修改与变换均应落在本发明所附权利要求的保护范围之内。
Claims (3)
1.一种用于冰箱门密封垫的聚氯乙烯组合物,其基于100重量份聚氯乙烯包括0.01-1.0重量份的甲基-2-苯并咪唑氨基甲酸酯、2-(4-三唑基)-苯并咪唑、α-[2-(4-氯苯基)-乙基]-α-(1,1-二甲基乙基)-1H-1,2,4-三唑基-1-乙醇和锌双(2-吡啶基硫-1-氧化物)。
2.权利要求1所述的组合物,基于100重量份聚氯乙烯,进一步包括30-80重量份的增塑剂,1-5重量份的稳定剂,5-50重量份的填充剂以及0.001-1重量份的颜料。
3.一种制备用于冰箱门密封垫的聚氯乙烯组合物的方法,其包括在50-120℃的温度下,基于100重量份聚氯乙烯,将0.01-1.0重量份的甲基-2-苯并咪唑氨基甲酸酯、2-(4-三唑基)-苯并咪唑、α-[2-(4-氯苯基)-乙基]-α-(1,1-二甲基乙基)-1H-1,2,4-三唑基-1-乙醇和锌双(2-吡啶基硫-1-氧化物),与30-80重量份的增塑剂,1-5重量份的稳定剂,5-50重量份的填充剂以及0.001-1重量份的颜料在混合器中进行混合的步骤;排出并在冷却混合器中以低于40℃的温度冷却,制备粉化的制剂;并在挤压机中将所述粉化制剂挤压成型。
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WO2006006594A1 (ja) * | 2004-07-13 | 2006-01-19 | Idemitsu Technofine Co., Ltd. | 抗菌性組成物、抗菌性成形体、抗菌性組成物含有溶液、洗浄剤、畳表および畳 |
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CN103589087A (zh) * | 2013-10-15 | 2014-02-19 | 苏州市景荣科技有限公司 | 一种抗菌防臭pvc鞋底材料 |
CN105111624A (zh) * | 2015-09-11 | 2015-12-02 | 陆思烨 | 一种抗菌耐老化冰箱门封条及其制备方法 |
CN111269555B (zh) * | 2020-03-31 | 2021-09-17 | 浙江益弹新材料科技有限公司 | 一种热塑性聚氨酯弹性体组合物及其制备方法 |
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JPS5819691B2 (ja) * | 1975-06-23 | 1983-04-19 | 住友ベークライト株式会社 | 熱可塑性樹脂組成物 |
JPH01259054A (ja) * | 1988-04-08 | 1989-10-16 | Daiken Ikou Kk | 機能性構造物 |
DE4122868A1 (de) * | 1991-07-11 | 1993-01-14 | Bayer Ag | Mikrobizide wirkstoffkombinationen |
JPH08239507A (ja) * | 1995-03-07 | 1996-09-17 | Toppan Printing Co Ltd | 抗菌性樹脂組成物 |
JPH09151107A (ja) * | 1995-11-30 | 1997-06-10 | Okamoto Ind Inc | 抗菌レザー |
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- 2001-05-25 KR KR1020010028922A patent/KR20020090418A/ko not_active Application Discontinuation
- 2001-09-28 CN CN 01141521 patent/CN1205263C/zh not_active Expired - Fee Related
- 2001-10-02 GB GB0123641A patent/GB2375766B/en not_active Expired - Lifetime
- 2001-10-03 MX MXPA01009996 patent/MXPA01009996A/es active IP Right Grant
- 2001-10-25 ES ES200102366A patent/ES2190883B2/es not_active Expired - Fee Related
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ITMI20012253A1 (it) | 2003-04-26 |
GB2375766A (en) | 2002-11-27 |
MXPA01009996A (es) | 2003-08-20 |
GB2375766B (en) | 2004-02-11 |
KR20020090418A (ko) | 2002-12-05 |
ES2190883A1 (es) | 2003-08-16 |
CN1388171A (zh) | 2003-01-01 |
ES2190883B2 (es) | 2005-05-01 |
GB0123641D0 (en) | 2001-11-21 |
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