CN103282455A - 机械和抗腐蚀防护乙烯基胶带 - Google Patents
机械和抗腐蚀防护乙烯基胶带 Download PDFInfo
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Abstract
本发明涉及主要用于修补和维护情况下的钢管抗腐蚀防护用压敏胶带,其包含与具有如下组成的基于丁腈橡胶的粘合剂层合在一起的乙烯基质胶带:约30.7至约34.0%(重量比)的固体丁二烯丙烯腈橡胶(NBR);约0.57至约0.63%(重量比)的抗氧化剂;约9.7至约12.9%(重量比)的烃树脂;约1.52至约1.68%(重量比)的氧化锌;约8.7至约9.5%(重量比)的液体丁二烯丙烯腈橡胶(NBR);约4.0至约4.4%(重量比)的水合硅酸铝;约5.5至约7.5%(重量比)的邻苯二甲酸二异壬酯;约0.66至约0.74%(重量比)的炭黑;约1.5至约1.7%(重量比)的无定形二氧化硅;和约25.8至约38.8%(重量比)的镁钙碳酸盐。所述胶带表现出良好的贴合于不规则表面的能力、良好的弹性、良好的耐冲击性、优异的管粘合力以及良好的耐阴极剥离性。所述胶带理想的是与改善管与胶带的粘合剂部分之间的粘合力的底漆结合使用。
Description
技术领域
本专利申请涉及为保护管道(其输送气体或液体)免受大气和土壤侵袭(包括维护和修补管)而开发的胶带领域。
背景技术
市场上市售的产品通常具有以下特征:
-沥青基质-底漆;
-合了沥青基质粘合剂的黑色聚乙烯胶带;和
-用于机械保护该系统的白色聚乙烯胶带。
其他市售产品不满足市场需要并且不提供所需的高水平粘合;因此,它们不可用于此应用中。这些产品用于无需高机械强度的应用以及管已经由抗腐蚀涂层覆盖的情况中。本发明提供了较高水平的粘合、湿强度、化学强度和机械强度以及良好的耐阴极剥离性。
来自现有技术的大多数文献资料涉及使用由基于沥青的原料组成的胶带或其他产品来保护管。一些文献资料主张聚乙烯胶带和交联系统二者;然而,这些中没有哪个采用类似于本发明并且包含相同特征的PVC基质。
专利HUT057247描述了一种基于沥青的抗腐蚀且绝缘的系统,其由三个层组成,即基质层、中间层和光反射层。该组合物由15-35重量份软化点在80-100℃范围内的沥青、3-8重量份软化点高于100℃的沥青、0.1-1.5重量份的苯乙烯-丁二烯-苯乙烯共聚物、1.8-4.8重量份的亚麻籽油清漆、1.2-3.2重量份的改性树脂、20-60重量份的非极性烃溶剂、6-26重量份的白垩粉、1-3重量份的硅胶或沸石、6-12重量份的石棉或聚丙烯纤维、15-27重量份的铝糊剂、0.1-1.5重量份的环烷酸钴或铜的混合物组成。
专利RU2325585描述了一种用于保护输送气体或液体的歧管管道、野外管道和工艺管道免受腐蚀的方法。所述方法包括清洁管道外表面的旧涂层和锈、在管道外表面上施加一层底漆、在底漆层上以重叠形式螺旋缠绕绝缘的抗腐蚀材料并且在绝缘的抗腐蚀材料层上以重叠形式螺旋缠绕聚合物胶带的包覆外层。底漆施加到管道的干燥表面上,绝缘的抗腐蚀材料的螺旋缠绕自三个绕线筒通过机器方法在湿底漆上进行。绝缘的抗腐蚀材料为一层沥青-聚合物乳香化合物,其内部具有增强玻璃网,并且胶带的螺旋缠绕以重叠形式进行。包覆外层为胶带,其构成卷状材料,通过在基于对热、光稳定的聚乙烯的聚乙烯胶带或热收缩胶带上施加乳香化合物熔体而产生。作用:其增加管道的可靠性和工作寿命。
专利UA75225涉及聚合型抗腐蚀胶带,其由保护性辐射交联聚乙烯层和粘性的粘合剂层组成,所述粘性的粘合剂层基于丙烯腈、合成树脂、商业碳、油沥青、金属氧化物、矿物填料、热稳定剂。保护性聚合物层的组合物包含二氧化钛和敏化剂,粘性的粘合剂层的组合物另外还含有乙烯与低聚天然橡胶的环氧共聚物。
专利RU2199051描述了一种胶带,其具有自聚合物材料制得的基质及自聚合物ASMOL与30%含量的沥青的混合物制得的乳香层。粘合剂层借助自聚对苯二甲酸乙二醇酯制得的防粘剂加以保护。使用可热收缩的胶带作为聚合物基质。
专利JP01017881涉及一种基于矿脂的抗腐蚀组合物等,其含有尺寸≥40μm的单宁酸、增塑剂如蜡、以及填料如二氧化硅和粘土并且经混合以获得糊状抗腐蚀组合物。将所得组合物涂布在多孔材料如非织造织物和毡或是多孔材料与PE、PP、PVC等具有低透气性的膜的层合物的基质材料两侧上,以获得抗腐蚀片材或胶带。在所述片材或胶带的一侧或两侧上层合由(非)织造布或人造丝、丙烯酸纤维、聚酯纤维等组成的多孔保护片材,所述多孔保护片材具有5W50%孔隙率、1W3,000μm厚度并且尺寸等于或大于所述片材或胶带。
专利WO9516160描述了一种对配重涂层海洋管线中的接合区域提供腐蚀防护的方法及一种适用于该方法中的胶带。所述管线包含多个管(2),每个管具有抗腐蚀涂层(4)及施加到该抗腐蚀涂层(4)上的配重涂层(6)。所述方法包括:(a)以圆周包覆形式施加:(i)第一胶带构件,其包含挠性耐热防水背衬膜(22)如高温PVC膜和压敏粘合剂层(28),所述第一胶带构件的宽度跨越且粘附至焊接接头(4b)的任一侧上暴露的管(2a)的第一接头长度并且至少部分地覆盖且粘附至经抗腐蚀涂层但未经配重涂层覆盖的接头的任一侧上与第一接头长度相邻的第二接头长度;和(ii)第二胶带构件(24),其包含宽度小于第一胶带构件(22)的宽度的高熔点耐磨膜如聚酯膜并且层合到第一胶带的外表面中心处,使得在施加时覆盖暴露的管(2a)的第一接头长度而不覆盖第二接头长度(4b),和(b)填充接头空间(10)。所述第一和第二胶带构件适宜地以具有经离型膜或纸(30)保护的压敏粘合剂层(28)的预层合胶带形式提供。
专利RU2319891描述了用于管及管道系统的腐蚀防护的材料的制备;所述材料保护运送天然气、油及石油产品的外部钢管线免受地下和大气腐蚀。物质:所提出的乳香含有沥青40/180(或45/190)、聚合物和增塑剂;使用苯乙烯-丁二烯热弹性弹性体作为聚合物;使用油-6作为增塑剂;组分浓度为如下(质量%):沥青(77-99);聚合物(0.5-15);增塑剂(0.5-8)。所提出的沥青聚合物乳香通过机械方法施加到熔融态聚合物基质上;可使用交联的聚乙烯基质或PVC胶带作为基质。由此获得的卷状材料用作管绝缘用包覆材料。作用:由于乳香对钢和对基质的粘合力增强而增强管的腐蚀防护;防冻性增强。
专利KR20020072818描述提供一种钢管桩的防腐蚀结构以通过防止腐蚀而半永久性地保持结构。所述钢管桩的防腐蚀结构包含:覆盖在钢管桩(10)(其通过使用海水的高压喷水泵保持洁净)的潮间区和浪溅区上的矿脂胶带(12);覆盖在矿脂胶带(12)上的PVC(聚氯乙烯)片材(14);靠近PVC片材(14)的覆盖部分安装并经紧固件固定的H.D.P.E(高密度聚乙烯)覆盖物(20);安装到H.D.P.E覆盖物(20)的外部的流线型覆盖物保护件(30);H.D.P.E覆盖物(20)与混凝土之间的接头上稀薄填缝的水下硬化环氧树脂(35);和含有凸缘及轴承钢板的钢带(40)。
发明内容
本发明涉及一种主要用于修补和维护情况下的抗腐蚀和机械钢管防护用的胶带,其包含与基于丁腈橡胶的粘合剂层合在一起的该乙烯基基质胶带。本发明的胶带包含粘合剂部分和非粘合剂部分。
所述胶带被设计成与市售抗腐蚀涂层组合地施加,在此情况下,所述抗腐蚀涂层充当底漆。由于所述胶带与所述底漆之间的相容性,故二者之间及对乙烯基加固物的粘合力非常高。所述胶带可用于风管及地下管的机械和抗腐蚀防护。
本发明的材料的至少一个实施例表现出良好的贴合于不规则表面的能力、良好的弹性、良好的耐冲击性、优异的管粘合力以及良好的耐阴极剥离性。
本发明的产品的至少一个实施例为涂布了PSA橡胶粘合剂的乙烯基胶带。
如上所提供的发明内容非意在描述本发明的各个所示实施例或所有实施。下文中的附图和详细描述将更具体地示例这些实施例。
附图说明
下面结合附图进一步描述本发明,在附图中:
图1示意了本发明通常应用于的典型管道;
图2示意了已施加底漆/涂层的典型管道;
图3示出了已施加粘合胶带的管道的典型示意图。
虽然本发明适应各种修改和替代形式,但附图中出于示例的目的示出了其特征,并将详细描述这些特征。然而,应理解,无意限制本发明于特定的所述实施例。相反,意图是涵盖附随的权利要求书限定的本发明范围内的所有修改、等价物和替代物。
具体实施方式
在以下对优选实施例的详细描述中参考了附图,附图示意了其中可实施本发明的具体实施例。本文中示意的实施例非意在通过本发明的所有实施例来实现。应当理解,可以采用其他实施例并且可以进行结构或逻辑改变而不偏离本发明的范围。因此,下文的详细描述不应理解为限制性特征,并且本发明的范围由附随的权利要求书限定。
本发明涉及一种抗腐蚀防护乙烯基胶带,其包含粘合剂部分和非粘合剂部分,其中所述粘合剂部分包含:
约30.7至约34.0重量%的固体丁二烯丙烯腈橡胶(NBR);
约0.57至约0.63重量%的抗氧化剂;
约9.7至约12.9重量%的烃树脂;
约1.52至约1.68重量%的氧化锌;
约8.7至约9.5重量的液体丁二烯丙烯腈橡胶(NBR);
约4.0至约4.4重量%的水合硅酸铝;
约5.5至约7.5重量%的邻苯二甲酸二异壬酯;
约0.66至约0.74重量%的炭黑;
约1.5至约1.7重量%的无定形二氧化硅;和
约25.8至约38.8重量%的镁钙碳酸盐。
优选地,基于组合物的总重量计,粘合剂胶带部分包含32.3重量%的固体丁二烯丙烯腈橡胶(NBR)、0.6重量%的抗氧化剂、11.3重量%的烃树脂、1.6重量%的氧化锌、9.1重量%的液体丁二烯丙烯腈橡胶(NBR)、4.2重量%的水合硅酸铝、6.5重量%的邻苯二甲酸二异壬酯、0.7重量%的炭黑、1.6重量%的无定形二氧化硅以及32.1重量%的镁钙碳酸盐。
非粘合剂部分包含呈现有技术中常见的膜制剂形式、优选地具有0.20至0.40mm之间、还更优选地0.25至0.35mm的厚度的乙烯基基质。
本发明的主要产品功能是通过保护管道免受因地下和时间侵袭所产生的氧化作用以及通过避免修补和排空来增加管道耐久性。在管上施加涂层,然后缠上胶带,从而促进管道保护。
所述胶带可快速且容易地应用于该领域中,因为其免去了任何形式的加热,因此不必将其与不同组分混合,也不必经受复原过程(healingprocess)。
由于底漆、粘合剂以及乙烯基膜之间的相容性,故该系统提供优异的粘合力,由此确保管的更好保护。
当用手触碰时,底漆和胶带具有非常低的粘着性。在实践中,因为由于现场的尘埃和污垢而可能存在产品污染,故这一点非常重要。因此,在将胶带施加到底漆上后,两者之间存在高度的化学相互作用并且在数分钟后开始粘合。
第一步是适当处理管表面。优选地,应使用合适的溶剂清洁所述表面,并然后进行喷砂、钢砂、砂磨、刷洗或甚至其他形式的表面处理。
第二步是通过使用刷子或滚漆筒施加底漆并等待干燥,这通常进行5至10分钟,具体取决于热和湿度天气条件。
第三是施加PVC胶带,优选地以最少50%重叠的形式缠管。
实例
本发明的目标和优点通过下面的实例进一步说明。然而,这些实例中给出的特定材料和量以及其他条件和细节不应理解为不当地限制本发明。
所用材料列表:
粘合剂组合物(胶带粘合剂):本发明的主要因素是促进PVC膜与抗腐蚀底漆之间的高粘合力/相容性的粘合剂。
以通常加工橡胶制剂的方法制备粘合胶带。
第一步,在辊磨机中制备固体丁二烯丙烯腈橡胶并向其中添加抗氧化剂、烃树脂和氧化锌;将通过此步骤获得的橡胶基质视为厚片。
第二步,将前一步中产生的橡胶基质热放置于混合设备中,该设备逐渐研磨橡胶基质并允许在整个工艺过程中添加的其他物质如烃树脂、二氧化硅、液体丁二烯丙烯腈橡胶、水合硅酸铝、炭黑、钙镁碳酸盐、增塑剂的并入。当限定的所有外加物质均已均匀并入后,得到表观均匀的块。
第三步,通过以下描述的两种可能中的任一种将自前一步获得的粘合胶带层合到乙烯基膜:第一种可能是使该粘合剂块经受热挤出过程并直接沉积在挤出机输出处的乙烯基膜上,然后通过保护纸回收,从而允许缠绕该胶带;第二种可能是在一组压延辊筒中处理该粘合剂块直至其达到合适的厚度,并然后层合到乙烯基膜上,随后通过保护纸回收,从而允许缠绕该胶带。
下表1示出了根据标准规则,抗腐蚀涂层的典型性质。
表1
在28天的调适期后,通过ASTM G8中描述的测试方法评价抗腐蚀涂层的耐阴极剥离性质。该测试的规范为剥离发生至多15mm。所得结果为平均5mm,符合所关注的标准规则。
表II示出了市售胶带与本发明胶带之间的比较。
表II
上表中示出的产品之间的主要差别在于粘合力和抗真菌生长性。
通过使用所述粘合剂作为粘合剂,对底漆的粘合力从0.17N/mm增至2.30N/mm,并且加固物粘合力从0.30N/mm增至2.35N/mm。
抗真菌生长性从30%减至0%。这意味着管的耐久性增加。
在分析本发明后,该产品的许多明显变型以及本发明可应用于的众多结构对本领域技术人员来说将是显而易见的,因此其视为涵盖在本发明的范围内。
权利要求书(按照条约第19条的修改)
1.一种抗腐蚀和机械防护乙烯基胶带,其特征在于粘合剂部分包含:
约30.7至约34.0重量%的固体丁二烯丙烯腈橡胶(NBR);
约0.57至约0.63重量%的抗氧化剂;
约9.7至约12.9重量%的烃树脂;
约1.52至约1.68重量%的氧化锌;
约8.7至约9.5重量%的液体丁二烯丙烯腈橡胶(NBR);
约4.0至约4.4重量%的水合硅酸铝;
约5.5至约7.5重量%的邻苯二甲酸二异壬酯;
约0.66至约0.74重量%的炭黑;
约1.5至约1.7重量%的无定形二氧化硅;和
约25.8至约38.8重量%的镁钙碳酸盐。
2.根据权利要求1所述的胶带,其特征在于,基于所述组合物的总重量计,所述粘合剂胶带部分优选地包含32.3重量%的固体丁二烯丙烯腈橡胶(NBR)、0.6重量%的抗氧化剂、11.3重量%的烃树脂、1.6重量%的氧化锌、9.1重量%的液体丁二烯丙烯腈橡胶(NBR)、4.2重量%的水合硅酸铝、6.5重量%的邻苯二甲酸二异壬酯、0.7重量%的炭黑、1.6重量%的无定形二氧化硅以及32.1重量%的镁钙碳酸盐。
3.一种抗腐蚀和机械防护乙烯基胶带,其特征在于其包含根据权利要求1中所定义的粘合剂部分并且非粘合剂部分包含呈现有技术中常见的膜制剂形式、优选地具有0.20至0.40mm之间、还更优选地0.25至0.35mm的厚度的乙烯基基质。
Claims (4)
1.一种抗腐蚀和机械防护乙烯基胶带,其特征在于粘合剂部分包含:
约30.7至约34.0重量%的固体丁二烯丙烯腈橡胶(NBR);
约0.57至约0.63重量%的抗氧化剂;
约9.7至约12.9重量%的烃树脂;
约1.52至约1.68重量%的氧化锌;
约8.7至约9.5重量%的液体丁二烯丙烯腈橡胶(NBR);
约4.0至约4.4重量%的水合硅酸铝;
约5.5至约7.5重量%的邻苯二甲酸二异壬酯;
约0.66至约0.74重量%的炭黑;
约1.5至约1.7重量%的无定形二氧化硅;和
约25.8至约38.8重量%的镁钙碳酸盐。
2.根据权利要求1所述的胶带,其特征在于,基于所述组合物的总重量计,所述粘合剂胶带部分优选地包含32.3重量%的固体丁二烯丙烯腈橡胶(NBR)、0.6重量%的抗氧化剂、11.3重量%的烃树脂、1.6重量%的氧化锌、9.1重量%的液体丁二烯丙烯腈橡胶(NBR)、4.2重量%的水合硅酸铝、6.5重量%的邻苯二甲酸二异壬酯、0.7重量%的炭黑、1.6重量%的无定形二氧化硅以及32.1重量%的镁钙碳酸盐。
3.一种抗腐蚀和机械防护乙烯基胶带,其特征在于所述非粘合剂部分包含呈现有技术中常见的膜制剂形式、优选地具有0.20至0.40mm之间、还更优选地0.25至0.35mm的厚度的乙烯基基质。
4.一种抗腐蚀和机械防护乙烯基胶带,其特征在于其包含根据权利要求1中所定义的粘合剂部分和根据权利要求3中所定义的非粘合剂部分。
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MX2013007484A (es) | 2013-08-15 |
EP2658938A1 (en) | 2013-11-06 |
RU2545297C2 (ru) | 2015-03-27 |
JP2014505766A (ja) | 2014-03-06 |
CN103282455B (zh) | 2014-11-26 |
KR20140019314A (ko) | 2014-02-14 |
WO2012092129A1 (en) | 2012-07-05 |
CA2823251A1 (en) | 2012-07-05 |
US20130288051A1 (en) | 2013-10-31 |
BRPI1005582A2 (pt) | 2013-04-16 |
TW201233750A (en) | 2012-08-16 |
RU2013130659A (ru) | 2015-02-10 |
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