CN101151309B - 使可发聚苯乙烯具有抗静电性能的方法 - Google Patents

使可发聚苯乙烯具有抗静电性能的方法 Download PDF

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CN101151309B
CN101151309B CN2006800100677A CN200680010067A CN101151309B CN 101151309 B CN101151309 B CN 101151309B CN 2006800100677 A CN2006800100677 A CN 2006800100677A CN 200680010067 A CN200680010067 A CN 200680010067A CN 101151309 B CN101151309 B CN 101151309B
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styrene polymer
static inhibitor
weight
whipping agent
polymer melt
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CN101151309A (zh
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M·阿尔门德英格
K·哈恩
J·鲁赫
B·施米德
J·霍洛赫
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0033—Use of organic additives containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0028—Use of organic additives containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0075—Antistatics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/03—Extrusion of the foamable blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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Abstract

本发明涉及一种生产抗静电处理的可发苯乙烯聚合物的方法，其中将0.05-6重量％抗静电剂和发泡剂加入苯乙烯聚合物熔体中，然后将所述熔体通过喷嘴挤出并造粒。

Description

使可发聚苯乙烯具有抗静电性能的方法
本发明涉及一种生产抗静电处理的可发苯乙烯聚合物的方法。
为了可无问题地运输可发聚苯乙烯(EPS)和减少预发泡聚苯乙烯泡沫颗粒上的静电荷，通常用抗静电剂涂覆EPS颗粒。这又产生保持EPS颗粒的抗静电性能的问题，因为尤其是在预发泡工艺中涂层剂可从粒料的表面磨损或洗掉。这又导致不令人满意的抗静电性能。
因此，本发明的目的为找到一种生产甚至在磨损和预发泡之后的情况下也保持令人满意的抗静电性能的抗静电处理的可发苯乙烯聚合物的方法。
因此，我们已找到了一种生产抗静电处理的可发苯乙烯聚合物的方法，其中将苯乙烯聚合物熔体与0.05-6重量％抗静电剂和发泡剂混合，将其通过模具挤出并造粒。
优选将苯乙烯聚合物熔体与0.1-4重量％抗静电剂混合。
合适的发泡剂为常用于EPS的物理发泡剂，例如具有2-7个碳原子的脂族烃、醇、酮、醚或卤代烃。优选使用异丁烷、正丁烷、异戊烷、正戊烷。包含发泡剂的苯乙烯聚合物熔体通常包含总量基于包含发泡剂的苯乙烯聚合物熔体为2-10重量％，优选3-7重量％的一种或多种均匀分布的发泡剂。
生产包含发泡剂的熔体，将其挤出和造粒的合适方法例如描述在WO03/06544中。
作为抗静电剂，可使用工业中普遍和常规的物质。实例为N，N-二(2-羟基乙基)-C12-C18烷基胺、脂肪酸的二乙醇酰胺、脂肪酸的胆碱酯氯化物、C12-C20烷基磺酸化物、铵盐等。
合适的铵盐在氮上除烷基外，还包含1-3个含羟基的有机基团。
合适的季铵盐例如为包含1-3个，优选2个键接在氮阳离子上的具有1-12个，优选1-10个碳原子的相同或不同的烷基和1-3个，优选2个键接在氮阳离子上的相同或不同的羟基烷基或羟基烷基聚氧化烯基团且具有诸如氯离子、溴离子、乙酸根、甲基硫酸根或对甲苯磺酸根的阴离子的季铵盐。
羟基烷基和羟基烷基聚氧化烯基团为通过烷氧基化与氮键接的氢原子而形成且衍生于1-10个氧化烯基，尤其是氧化乙烯基和氧化丙烯基的基团。
特别优选使用季铵盐或C12-C20链烷磺酸的碱金属盐，尤其是钠盐如购自Bayer AG的Emulgator K30，或其混合物作为抗静电剂。抗静电剂通常可以纯物质或以水溶液形式加入。还可在造粒后将包含抗静电剂的涂料额外施加至粒料上。
抗静电剂由于相分离逐渐扩散至EPS粒料的表面上，且其与粒料的残留水含量和/或大气湿度的结合确保了EPS粒料的可靠的抗静电性能。
由于抗静电剂从粒料连续扩散至表面，通过本发明方法得到的可发苯乙烯聚合物具有甚至在可能从表面上洗去抗静电剂之后也可再生的可靠的抗静电性能。以该方式也可改进预发泡之后通常不令人满意的抗静电性能。
实施例：
实施例1-3和对比实验C1和C2
将表1所述量的作为抗静电剂的平均链长为C-15的主要为仲链烷磺酸钠(购自Bayer AG的Emulgator K30)和7重量％的作为发泡剂的正戊烷的混合物与由购自  BASF Aktiengesellschaft的粘数VN为83ml/g(Mw＝220 000g/mol，多分散性Mw/Mn＝2.8)的PS 148G组成的聚苯乙烯熔体混合。
将包含发泡剂的熔体混合物在冷却器中从最初的260℃冷却至190℃，并以60kg/h的速率从具有32个洞(喷嘴直径＝0.75mm)的模板中挤出。具有窄尺寸分布的压缩粒料借助加压的水下造粒法生产。
所得粒料用甘油单硬脂酸酯、甘油三硬脂酸酯、细碎的硅石AerosilR972、硬脂酸锌和抗静电剂Emulgator K30(基于EPS粒料为200ppm)的涂料混合物涂覆。
随后使粒料在流动蒸汽中预发泡以产生泡沫珠(18g/l)，储存24小时，随后在气密模具中借助蒸汽熔融以产生泡沫体。
抗静电性能经由借助水洗去涂料并随后干燥之前和之后约60分钟的表面电阻测试和评估(+：满意；-：不满意)。
实施例4：
重复实施例1，不同之处在于将4重量％的Cesa-stat 3301(购自Clariant)作为抗静电剂混入聚苯乙烯熔体中。
对比实验C1：
重复实施例1，不同之处在于未将抗静电剂混入聚苯乙烯熔体，而是仅经由涂覆施加抗静电剂Emulgator K30。
表1：EPS粒料的抗静电性能
实施例 混入的抗静电剂[重量％] 涂覆后的抗静电性能 洗涤后的抗静电性能
1  0.5 K 30 + +
2  1.5 K 30 + +
3  1.0 K 30 + +
4  4.0 Cesa-stat 3301 + +
C1  0 + -

Claims (8)

1.一种生产抗静电处理的可发苯乙烯聚合物的方法，其包括将苯乙烯聚合物熔体与0.05-6重量％抗静电剂和发泡剂混合，将其通过模具挤出并造粒，其中发泡剂的量基于包含发泡剂的苯乙烯聚合物熔体为3-7重量％。
2.根据权利要求1的方法，其中发泡剂选自异丁烷、正丁烷、异戊烷、正戊烷。
3.根据权利要求1的方法，其中将苯乙烯聚合物熔体与0.1-4重量％抗静电剂混合。
4.根据权利要求2的方法，其中将苯乙烯聚合物熔体与0.1-4重量％抗静电剂混合。
5.根据权利要求1-4中任一项的方法，其中将季铵盐用作抗静电剂。
6.根据权利要求1-4中任一项的方法，其中使用C12-C20链烷磺酸的碱金属盐。
7.根据权利要求1-4中任一项的方法，其中在造粒之后将包含抗静电剂的涂料额外施加至粒料上。
8.一种可根据权利要求1-7中任一项的方法得到的抗静电处理的可发苯乙烯聚合物。
CN2006800100677A 2005-04-06 2006-04-05 使可发聚苯乙烯具有抗静电性能的方法 Expired - Fee Related CN101151309B (zh)

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PCT/EP2006/061350 WO2006106121A1 (de) 2005-04-06 2006-04-05 Verfahren zur antistatischen ausrüstung von expandierbarem polystyrol

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CN1191227A (zh) * 1997-01-30 1998-08-26 恩尼彻姆公司 生产苯乙烯聚合物的可发泡颗粒的方法

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CN1191227A (zh) * 1997-01-30 1998-08-26 恩尼彻姆公司 生产苯乙烯聚合物的可发泡颗粒的方法

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DE102005015892A1 (de) 2006-10-12
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EP1869111A1 (de) 2007-12-26
KR20080005254A (ko) 2008-01-10
MX2007011390A (es) 2007-10-10
BRPI0607909A2 (pt) 2010-03-23
US20080167393A1 (en) 2008-07-10
ES2390787T3 (es) 2012-11-16
RU2430120C2 (ru) 2011-09-27
CN101151309A (zh) 2008-03-26
EP1869111B1 (de) 2012-09-05
PL1869111T3 (pl) 2013-02-28

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