CN117355637A - 防腐蚀组合物 - Google Patents

防腐蚀组合物 Download PDF

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Publication number
CN117355637A
CN117355637A CN202280030709.9A CN202280030709A CN117355637A CN 117355637 A CN117355637 A CN 117355637A CN 202280030709 A CN202280030709 A CN 202280030709A CN 117355637 A CN117355637 A CN 117355637A
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Prior art keywords
composition
weight
corrosion
component
parts
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CN202280030709.9A
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Inventor
O·汉莫扎
R·玛特森
A·L·鲍尔森
M·O·汉森
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Rockwell Co ltd
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Rockwell Co ltd
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Publication of CN117355637A publication Critical patent/CN117355637A/zh
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    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
    • C04B28/344—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/007—Impregnation by solution; Solution doping or molecular stuffing of porous glass
    • C—CHEMISTRY; METALLURGY
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    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/38—Fibrous materials; Whiskers
    • C04B14/46—Rock wool ; Ceramic or silicate fibres
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    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
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    • C04B20/1085—Waterglass
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    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • D—TEXTILES; PAPER
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • C—CHEMISTRY; METALLURGY
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Abstract

本发明涉及防腐蚀组合物和这种组合物用于赋予材料防腐蚀性质的用途，以及包含这种组合物的材料。

Description

防腐蚀组合物
技术领域
本发明涉及防腐蚀组合物和这种组合物用于赋予材料防腐蚀性质的用途，以及包含这种组合物的材料。
背景技术
腐蚀是因金属与周围环境之间的化学反应所致的金属劣化。腐蚀涉及金属转化为化学上更稳定的形式，诸如氧化物、氢氧化物或硫化物。
钢的腐蚀在水和氧气存在下发生。钢部件的腐蚀是重大经济问题，其时常构成钢结构维护和更新成本的主要部分。
非常具体的问题是保温层下腐蚀(CUI)的问题，其影响用保温材料隔热的钢部件。钢结构通常会被保温以避免热损失。这种保温对于比其周围环境更热或更冷的钢结构可为期望的。CUI特别是在经历循环温度变化的钢结构、例如油气工业中的管线的保温层下发生。
因为钢的腐蚀在水和氧气存在下发生，存在与钢结构接触的水是促成腐蚀的主要因素。因为与不具有周围保温材料接触所持续的时间相比，围绕钢结构以避免热损耗的保温材料趋向于使水与钢结构保持更长时间接触，这类保温材料可促成腐蚀增加。钢一般在0℃至175℃的温度范围内易受到CUI。最常发生的CUI类型为碳钢的全面腐蚀和点状腐蚀，其可在湿保温层接触碳钢的情况下发生；以及奥氏体不锈钢的外应力腐蚀跟踪(ESCT)，其为主要由水溶性氯化物的作用引起或在保温层未满足适当要求的情况下的特定腐蚀类型。因为受腐蚀表面大部分被保温系统遮盖，并且直至检查或在金属失效导致事故移除保温层才会被发现，所以尽可能控制CUI是非常重要的。
为了避免CUI，保温的钢结构通常被额外的覆层覆盖以阻止水进入。然而，经验显示水通常经由覆层体系中的缺陷或损坏或经由结构中经历循环温度变化的湿空气而进入。水也可由非密封配件内部地或由如洪水的事件外部地与钢结构接触。
为了避免CUI，钢结构如油气工业中的管线通常通过用保护层、例如用像锌或铝的其它金属涂布钢部件而保护免受腐蚀。然而，这类涂层决不是完全保护层，并且这些保护措施可为成本极高昂的且对于大范围的管线系统可为在经济上不能接受的。
鉴于由任何形式的腐蚀(呈隔离下腐蚀的形式或任何其它的腐蚀形式)引起的高经济损失，已开发许多策略以避免腐蚀。一种策略是通过赋予材料斥水性以阻止水进入。另一种策略是通过在接触后使水快速从材料消失来缩短材料湿润的时间。另一种策略是使用腐蚀抑制剂。
尽管在过去已提出了具有不同组成的许多腐蚀抑制剂，但许多这些防腐蚀组合物承受着缺乏有效性和/或价格高昂和/或难以处理和/或对人和/或环境有害的问题。
发明内容
因此，本发明的目的在于提供防腐蚀组合物，其在抑制腐蚀上高度有效，在经济上有利，容易处理，并且对人和环境无害。
本发明的另一个目的在于提供防腐蚀组合物用于赋予多种材料防腐蚀性质的用途，该材料具体而言选自矿棉产品诸如岩棉或玻璃棉和其它纤维材料。
本发明的另一个目的在于提供包含这种防腐蚀组合物的矿棉产品。
根据本发明的第一方面，提供防腐蚀组合物，其包含一种或多种具有式Me2O·xSiO2(其中x为0.5至3.0)的碱金属硅酸盐组分，一种或多种具有式Me2O:nP2O5(其中n为0.33至1)的碱金属磷酸盐组分或者其水合物，一种或多种具有6-22、诸如7-14个碳原子的羧酸或者其盐。
根据本发明的第二方面，提供组合物用于赋予材料防腐蚀性质的用途，该组合物包含一种或多种具有式Me2O·xSiO2(其中x为0.5至3.0)的碱金属硅酸盐组分，一种或多种具有式Me2O:nP2O5(其中n为0.33至1)的碱金属磷酸盐组分或者其水合物，一种或多种具有6-22、诸如7-14个碳原子的羧酸或者其盐，该材料诸如选自矿棉产品诸如岩棉或玻璃棉和其它纤维材料。
根据本发明的第三方面，提供诸如矿棉产品或其它纤维材料的材料，其包含含有以下的组合物：一种或多种具有式Me2O·xSiO2(其中x为0.5至3.0)的碱金属硅酸盐组分，一种或多种具有式Me2O:nP2O5(其中n为0.33至1)的碱金属磷酸盐组分或者其水合物，一种或多种具有6-22、诸如7-14个碳原子的羧酸或者其盐。
本发明人已意外地发现，通过包含所述金属硅酸盐组分、所述金属磷酸盐组分和所述羧酸的这种组合物可制备高度有效的防腐蚀组合物。提及的所有组分都是相当便宜的，容易处理，且对人或环境无毒害。因此，根据本发明的防腐蚀组合物显示出在先前已知的防腐蚀组合物中未发现的性质的独特组合。
具体实施方式
本发明涉及防腐蚀组合物，其包含一种或多种具有式Me2O·xSiO2(其中x为0.5至3.0)的碱金属硅酸盐组分，一种或多种具有式Me2O:nP2O5(其中n为0.33至1)的碱金属磷酸盐组分或者其水合物，一种或多种具有6-22、诸如7-14个碳原子的羧酸或者其盐。
在一个实施方案中，根据本发明的防腐蚀组合物呈固体混合物的形式。
在一个实施方案中，根据本发明的防腐蚀组合物呈水溶液/分散体的形式。
碱金属硅酸盐组分
本发明人已发现，可在非常有效的防腐蚀组合物中使用具有式Me2O·xSiO2的碱金属硅酸盐组分，其中x为0.5至4.0，诸如其中x为0.5至3.0。这些组分是便宜的，容易处理且对人和环境无害。
在一个实施方案中，碱金属硅酸盐组分是具有式Na2O·xSiO2x的硅酸钠，其中x＝1或2，诸如Na2SiO3。
在一个实施方案中，碱金属硅酸盐组分是Na4O4Si(原硅酸钠)，对应于Me2O·xSiO2(其中x为0.5)。
要指出碱金属硅酸盐组分，诸如具有式Na2O·xSiO2x(其中x＝1或2)的硅酸钠，诸如Na2SiO3可保留结晶水。
碱金属磷酸盐组分
本发明人已意外地发现，可在高度有效的防腐蚀组合物中使用具有式Me2O:nP2O5(其中n为0.33至1)的碱金属磷酸盐或其水合物。这些碱金属磷酸盐组分是便宜的，容易处理且对人和环境完全无害。
在一个实施方案中，碱金属磷酸盐组分是磷酸钠，诸如Na3PO4。
羧酸组分
本发明人已意外地发现，可在高度有效的防腐蚀组合物中使用具有6-22、诸如7-14个碳原子的羧酸或其盐。这些羧酸组分是便宜的，容易处理且对人和环境完全无害。
在一个实施方案中，羧酸组分是具有式HO2C(CH2)nCO2H的二羧酸组分，其中优选n为2-20，特别是4-10，诸如n＝8。
在一个实施方案中，羧酸组分呈皂的形式，诸如硬脂酸钠。
组分的重量比例
原则上，本发明的防腐蚀组合物的组分可以任何重量比例来使用。
在一个实施方案中，碱金属硅酸盐组分、碱金属磷酸盐组分和羧酸组分的重量比例为基于碱金属硅酸盐组分、碱金属磷酸盐组分和羧酸组分的总重量计：60-96重量份、诸如70-93重量份、诸如75-90重量份的碱金属硅酸盐组分，1-25重量份、诸如2-20重量份、诸如3-15重量份的碱金属磷酸盐组分，和1-20重量份、诸如2-15重量份、诸如5-12重量份的羧酸组分。
在一个实施方案中，组合物是水溶液/分散体，并且基于水溶液/分散体的总体积计包含：4-30克/升、诸如6-20克/升、诸如8-14克/升的碱金属硅酸盐组分，0.1-5克/升、诸如1-3.5克/升、诸如2-2克/升的碱金属磷酸盐组分，和0.1-10克/升、诸如0.2-5克/升、诸如0.3-1.5克/升的羧酸组分。
在另一个实施方案中，组合物是水溶液/分散体，并且包含：
100-500g/l、诸如150-300g/l的Na2SiO3；2-50g/l、诸如10-20g/l的癸二酸；20-80g/l、诸如30-60g/l的Na3PO4。
另外的组分
根据本发明的防腐蚀组合物可包含可进一步改进组合物性质的另外的组分。
在一个实施方案中，组合物还包含疏水剂，该疏水剂包含至少一种有机硅化合物，诸如有机硅树脂，诸如反应性有机硅树脂，诸如选自聚烷基乙氧基硅氧烷、聚甲基乙氧基硅氧烷、聚苯基乙氧基硅氧烷、聚苯基硅氧烷、聚苯基甲基硅氧烷的反应性有机硅树脂。
在一个实施方案中，根据本发明的组合物包含疏水剂、乳化剂和任选痕量的乙醇，该疏水剂包含基于疏水剂的总重量计30至60重量％的量的聚甲基乙氧基硅氧烷和1至5重量％的量的辛基三乙氧基硅烷。
在一个实施方案中，根据本发明的组合物包含一种或多种碱稳定水分散性表面活性剂。
在本发明的范围内，表面活性化合物应理解为降低两种液体间、气体与液体间或液体与固体间的表面张力的化合物。
在另一个实施方案中，根据本发明的组合物包含一种或多种碱稳定水溶性表面活性剂。
在一个实施方案中，根据本发明的组合物包含选自皂、表面活性剂的表面活性化合物，该表面活性剂诸如为碱稳定水分散性表面活性剂、诸如碱稳定水溶性表面活性剂、诸如乳化表面活性剂。
在一个实施方案中，根据本发明的组合物包含：
100-500g/l、诸如150-300g/l的Na2SiO3，
2-50g/l、诸如10-20g/l的癸二酸，
20-80g/l、诸如30-60g/l的Na3PO4，
0.1-100g/l的表面活性化合物，诸如：
0.05-50g/l的碱稳定表面活性剂和任选的，
0.1-100g/l的乳化助表面活性剂。
在一个实施方案中，根据本发明的组合物包含至少一种硅酸盐化合物，诸如有机改性的水玻璃，诸如碱金属有机硅酸盐，诸如甲基硅酸钾。
在一个实施方案中，根据本发明的组合物是水溶液/分散体，并且包含0.01-20克/升、诸如0.05-15克/升、诸如0.1-10克/升的有机硅化合物。
在一个实施方案中，组合物还包含一种或多种水可混溶的有机溶剂。
在一个实施方案中，水可混溶的有机溶剂是醇，诸如异丙醇。
在一个实施方案中，根据本发明的组合物包含：
5-60g/l、诸如25-45g/l的Na2SiO3，
0.5-5g/l、诸如1.5-3.5g/l的癸二酸，
2-15g/l、诸如4-10g/l的Na3PO4，
50-500ml/l、诸如150-350ml/l的异丙醇。
在一个实施方案中，组合物还包含一种或多种表面活性剂。
在一个实施方案中，根据本发明的组合物包含：
100-500g/l、诸如150-300g/l的Na2SiO3，
2-50g/l、诸如10-20g/l的癸二酸，
20-80g/l、诸如30-60g/l的Na3PO4，
0.05-50g/l的碱稳定表面活性剂，
0.1-100g/l的乳化助表面活性剂。
组合物的用途
本发明还涉及上文描述的组合物用于赋予材料防腐蚀性质的用途。关于组合物可用于赋予防腐蚀性质的材料没有主要限制。
在一个实施方案中，本发明涉及上文描述的防腐蚀组合物用于赋予选自矿棉产品诸如岩棉或玻璃棉和其它纤维材料的产品防腐蚀性质的用途。
在一个实施方案中，本发明涉及上文描述的防腐蚀组合物用于赋予保温产品防腐蚀性质的用途，保温产品选自矿棉保温产品诸如岩棉或玻璃棉保温产品和由其它纤维材料制成的保温产品。
在一个实施方案中，防腐蚀组合物的用途是使得组合物分散于产品诸如矿棉产品、诸如矿棉保温产品，或其它纤维材料诸如气凝胶保温产品中。
在一个实施方案中，这种分散使得在矿棉产品诸如矿棉保温产品或其它纤维材料诸如气凝胶保温产品的表面层、诸如具有0.5至10cm的厚度的表面层上发生分散。
在一个实施方案中，用途使得产品选自管段、屋顶产品、外墙产品、垫、丝网垫。
产品
本发明还涉及已用上文描述的防腐蚀组合物处理的材料。
在一个实施方案中，产品是矿棉产品。
在一个实施方案中，产品是气凝胶。
在一个实施方案中，产品是具有改进的防腐蚀性质、特别是改进的保温层下防腐蚀性质的矿棉产品或其它纤维材料。
通过以下实施例进一步示出本发明：
为了测试根据本发明的防腐蚀组合物的性能，将具有根据本发明的防腐蚀组合物的可商购获得的Prorox PS960的岩棉管段的CUI性能与不具有根据本发明的防腐蚀组合物的标准岩棉管段Prorox PS960的防腐蚀性能进行了比较。
试验装置和试验条件
试验装置大体上依据ASTM G189-07，但具有以下改变：
●样品间的PTFE垫片已用特殊的有机硅O形环替代，
●试验设备和试样的夹持使用弹簧压缩系统实现以对抗系统的热膨胀，
●相比于ASTM G189-07中6.35mm的宽度，环形试样为14.3mm宽。
这些改变都不可认为是相比于ASTM G189-07中所述试验方法和装置的放宽。
设备
使用了以下模拟设备：
a)由ASTM A106B级碳钢管制成的环形试样，其具有14.3mm的宽度和60mm的直径，抛光至600粒度光洁度。
b)用于密封和间隔的O形环。
c)外径160、内径60具有和不具有腐蚀抑制剂的管保温层。
d)铝管夹套。
e)由两个末端部件组成、在其间安装试验环的特殊设计的试验台。
f)安装有螺旋弹簧以紧缩布置的螺杆。螺旋弹簧确保热伸长可被吸收。
g)具有循环以及管和软管连接的Julabo Corio加热/冷却浴。浴可根据时间/温度控制规划。
h)可在60℃至150℃下运行的液体循环非腐蚀加热介质。测量保温层下的管表面上温度的热电偶。
i)控制计算机。
j)用于记录试验期间的温度的数据记录器。
k)带有控制器的试验液体递送系统/计量泵。
l)有机硅密封剂。
m)在加热器与装置间用于加热管的保温层。
试验装置的示意图在图1中可见，并且试验装置的照片在图2中可见。
试验条件
进行了两个单独的试验。在试验期间条件如下：
试验1：
a)利用以下温度条件循环测试，试验循环的图示还参见图3。每次试验循环的总注水为85ml，并且21天的整个试验中总注入为1785ml。
步骤 湿 升高 干 下降
温度[℃] 60 60至150 150 150至60
持续时间[hr] 18 1 4 1
注水 40ml/10min+2.5ml/hr 无 无 无
b)试验持续时间为21次循环(21天)。
c)试验溶液为去离子水。
d)试验溶液经由相隔42.9mm放置的两个进料管通过保温层的顶部进入，参见图1和2。
e)保温层经由在保温层底部中的中心孔排水，参见图1。
f)6个相同的环形试样由ASTM A106B级碳钢管制成，具有14.3mm的宽度和60mm的直径，抛光至600粒度光洁度。
g)使用有机硅将保温材料密封于试验管，从而形成25cm长的环带。使用不锈钢丝将保温层紧密固定于管表面。使用软管夹将外部铝夹套固定在保温层周围，并且使用有机硅纵向地密封于法兰端。
试验2：
试验条件与试验1相同，但每次试验循环使用更大的注水体积。每次试验循环的总注水为119ml，并且21天的整个试验中总注入为2499ml。
测试的防腐蚀组合物
在两个试验中使用了两种不同浓度的防腐蚀组合物，并且用不同的技术施用于岩棉保温层，然而，产生了每立方厘米经处理管保温层相同浓度的防腐蚀组合物。
试验1：
为了将防腐蚀组合物施用于500mm长、60mm内径的管保温层，需要共0.85升的防腐蚀组合物混合物以处理具有10mm深度的管保温层内层。测试的根据本发明的防腐蚀组合物如下：
33.75g/l Na2SiO3+2.25g/l癸二酸+6.75g/l Na3PO4+250ml/l异丙醇和750ml/l脱矿物质水。
通过在1L大小的塑料容器中混合0.75升脱矿物质水并随后按下方列出的顺序混合以下化学品来将腐蚀抑制剂施用于试样：
1. 33.75g硅酸钠Na2SiO3，并且在搅拌/振荡下使其溶解，
2. 2.25g癸二酸，并且在搅拌或振荡下使其溶解，
3. 6.75g磷酸三钠Na3PO4，并且使其溶解。
最后，0.25L IPA待与每0.75L混合物一起使用。
然后，将溶液喷涂在管保温层的内侧面上，首先是IPA并随后是防腐蚀混合物，以确保在保温产品的内层约10mm的深度被完全浸渍，并随后使其干燥。
然后，按上述试验1测试现在用防腐蚀组合物处理的保温层样品的CUI性能。
试验2：
为了将防腐蚀组合物施用于500mm长、60mm内径的管保温层，需要共0.13升的防腐蚀组合物混合物以处理具有10mm深度的管保温层内层。测试的根据本发明的防腐蚀组合物如下：
220g/l Na2SiO3+14.67g/l癸二酸+44g/l Na3PO4+10g/l乳化助表面活性剂+4g/l碱稳定表面活性剂。
将所有化学品以上述顺序溶解于脱矿物质水中，配平至1升。
然后，将溶液喷涂在管保温层的内侧面上，并且保温产品的内层约10mm的深度被完全浸渍，并随后干燥。
然后，按上述试验2测试现在用防腐蚀组合物处理的保温层样品的CUI性能。
结果
在结束21次试验循环后，将试样用DI水和尼龙刷洗涤，用乙醇漂洗，并且干燥以从表面上除去松散的腐蚀产物和保温层，之后首次称重。在这之后，按照DS/EN ISO 8407，通过浸于抑制性16重量％盐酸中而从试样中除去腐蚀产物。在冲洗之后再次对试样进行称重。
在除去腐蚀产物后，估算局部腐蚀的程度(如果有关)，以及测量点蚀深度(如果有关)。
结果概述于表1(使用具有腐蚀抑制剂的Prorox PS960的试验1)、表2(使用ProroxPS960的试验1)和表3(使用具有腐蚀抑制剂的Prorox PS960且试验期间注水更大的试验2)中。
在除去沉积物和腐蚀产物前和后的使用具有腐蚀抑制剂的Prorox PS960测试的试样的试验1的照片在图4至7中可见。
在除去沉积物和腐蚀产物前和后的使用Prorox PS960测试的试样的试验1的照片在图8至12中可见。
在除去沉积物和腐蚀产物前和后的使用具有腐蚀抑制剂的Prorox PS960测试的试样的试验2的照片在图13至20中可见。
试验1：具有腐蚀抑制剂的Prorox PS960
关于使用具有腐蚀抑制剂的Prorox PS960的测试的结果，试样A-21-1的重量结果有误差，因为在清洗期间除去了试样未暴露侧面的一些原始轧屑，因此产生了错误的重量损失结果。在检查时试样没有腐蚀，并且使用10×放大仅观察到一个非常浅的小坑样侵蚀。
在试样A21-6上检测到了一个小直径坑。
由于在试样上观察到的非常少、小且浅的局部侵蚀以及与测定受影响表面的面积相关联的固有不确定性和测量误差，并未进行局部腐蚀速率的计算，因为这将产生误导性的结果。
在21次测试循环期间，从试验排出的水经测量为微碱性(约pH 8-10)。
表1.具有腐蚀抑制剂的Prorox PS960，试样的测量数据
Prorox PS960
由于保温材料的润湿性质并且金属表面不产生明显的点状腐蚀，作为试验结果观察到的试样上的侵蚀虽然本质上是局部的，然而在除去腐蚀产物后外观上观察到全面腐蚀，参见图12。
在21次测试循环期间，从试验排出的水经测量为从微碱性(约pH8)至微酸性(约pH6)。
表2.Prorox PS960，试样的测量数据
试验2：具有腐蚀抑制剂的Prorox PS960
用比试验1中多40％的注水体积重复进行了试验。
在检查时试样没有腐蚀，并且在10-50×放大下检查时仅观察到具有浅局部腐蚀的小区域。这些局部侵蚀的总面积小于总暴露样品面积的0.5％。
由于在试样上观察到的非常少、小且浅的局部侵蚀以及与测定受影响表面的面积相关联的固有不确定性和测量误差，表3中并未进行局部腐蚀速率的计算，因为这将产生误导性的结果。基于全部十二个试样和21次试验循环，计算出的平均每年均匀腐蚀速率为2.22μm/年。
在21次测试循环期间，从试验A和B排出的水经测量为微碱性(约pH 8-10)。
表3.具有腐蚀抑制剂的Prorox PS960WR-Tech，试样的测量数据
结论
成功地进行了修改的ASTM G189-7试验计划，测试了对于管基材未使用垫片、有和没有用腐蚀抑制化合物处理的岩棉保温材料。相比于用标准岩棉管保温材料进行的试验，用腐蚀抑制化合物浸渍的岩棉保温材料产生了明显更低的管试样上的腐蚀速率。基于21次试验循环，在使用防腐蚀保温材料的试验基材上计算出的每年均匀腐蚀速率平均低至约十四分之一。

Claims (13)

1.防腐蚀组合物，其包含：
一种或多种具有式Me2O·xSiO2的碱金属硅酸盐组分，其中x为0.5至4.0，诸如其中x为0.5至3.0，
一种或多种具有式Me2O:nP2O5的碱金属磷酸盐组分或者其水合物，其中n为0.33至1，
一种或多种具有6-22、诸如7-14个碳原子的羧酸或者其盐。
2.根据权利要求1所述的组合物，其中所述碱金属硅酸盐组分为Na2SiO3。
3.根据前述权利要求中任一项所述的组合物，其中所述碱金属磷酸盐组分为磷酸钠，诸如Na3PO4。
4.根据前述权利要求中任一项所述的组合物，其中所述羧酸组分为具有式HO2C(CH2)nCO2H的二羧酸组分，其中优选n为2-20，特别是4-10，诸如n＝8。
5.根据前述权利要求中任一项所述的组合物，其中所述碱金属硅酸盐组分、碱金属磷酸盐组分和羧酸组分的重量比例为基于碱金属硅酸盐组分、碱金属磷酸盐组分和羧酸组分的总重量计：
60-96重量份、诸如70-93重量份、诸如75-90重量份的碱金属硅酸盐组分，
1-25重量份、诸如2-20重量份、诸如3-15重量份的碱金属磷酸盐组分，和
1-20重量份、诸如2-15重量份、诸如5-12重量份的羧酸组分。
6.根据前述权利要求中任一项所述的组合物，其中所述组合物还包含选自皂、表面活性剂的表面活性化合物，所述表面活性剂为诸如碱稳定水分散性表面活性剂、诸如碱稳定水溶性表面活性剂、诸如乳化表面活性剂。
7.根据前述权利要求中任一项所述的组合物，其中所述组合物包含：
100-500g/l、诸如150-300g/l的Na2SiO3，
2-50g/l、诸如10-20g/l的癸二酸，
20-80g/l、诸如30-60g/l的Na3PO4，
0.1-100g/l的表面活性化合物，诸如：
0.05-50g/l的碱稳定表面活性剂和任选的，
0.1-100g/l的乳化助表面活性剂。
8.根据前述权利要求中任一项所述的组合物，其中所述组合物还包含疏水剂，所述疏水剂包含至少一种有机硅化合物，诸如有机硅树脂，诸如反应性有机硅树脂，诸如选自聚烷基乙氧基硅氧烷、聚甲基乙氧基硅氧烷、聚苯基乙氧基硅氧烷、聚苯基硅氧烷、聚苯基甲基硅氧烷的反应性有机硅树脂。
9.根据前述权利要求中任一项所述的组合物，其中所述组合物还包含一种或多种水可混溶的有机溶剂，诸如醇，诸如异丙醇。
10.根据权利要求1至9中任一项所述的组合物用于赋予产品防腐蚀性质的用途，所述产品选自矿棉产品诸如岩棉或玻璃棉和气凝胶产品。
11.根据权利要求10所述的用途，其中将根据权利要求1至9所述的组合物分散于矿棉产品中，诸如所述矿棉产品的表面层中。
12.根据权利要求10至11中任一项所述的用途，所述产品选自管段、屋顶产品、外墙产品、垫、丝网垫。
13.矿棉产品，其包含根据权利要求1至9中任一项所述的组合物。
CN202280030709.9A 2021-03-25 2022-03-24 防腐蚀组合物 Pending CN117355637A (zh)

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