CN207961776U - Corrosion-resistant plastic coated composite steel pipe - Google Patents
Corrosion-resistant plastic coated composite steel pipe Download PDFInfo
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- CN207961776U CN207961776U CN201820299321.XU CN201820299321U CN207961776U CN 207961776 U CN207961776 U CN 207961776U CN 201820299321 U CN201820299321 U CN 201820299321U CN 207961776 U CN207961776 U CN 207961776U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000005260 corrosion Methods 0.000 title claims abstract description 44
- 239000004033 plastic Substances 0.000 title claims abstract description 23
- 230000007797 corrosion Effects 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000011247 coating layer Substances 0.000 claims abstract description 37
- 239000010410 layer Substances 0.000 claims abstract description 35
- 229920001971 elastomer Polymers 0.000 claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 12
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 10
- 229920003986 novolac Polymers 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- 239000004843 novolac epoxy resin Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- -1 rare earth salt Chemical class 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 206010003591 Ataxia Diseases 0.000 description 1
- 206010010947 Coordination abnormal Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000012039 electrophile Substances 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-N hydroperoxyl Chemical group O[O] OUUQCZGPVNCOIJ-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 208000028756 lack of coordination Diseases 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
本实用新型公开了一种耐腐蚀涂塑复合钢管，其技术方案要点是包括钢管本体，所述钢管本体上包覆有内涂覆层和外涂覆层，所述钢管本体与内涂覆层之间、钢管本体与外涂覆层之间均设有高弹态橡胶缓冲层，所述高弹态橡胶缓冲层的厚度为0.3～0.6mm，所述内涂覆层和外涂覆层均为耐磨防腐层，本实用新型的优点在于将内涂覆层和外涂覆层设为耐磨防腐层，能够对钢管本体起到良好的保护作用，在钢管本体与内涂覆层之间、钢管本体与外涂覆层之间设置高弹态橡胶缓冲层，能够使得钢管与耐磨防腐层发生的形变不同时起到拉伸缓冲的作用，从而避免耐磨防腐层发生破裂。
The utility model discloses a corrosion-resistant plastic-coated composite steel pipe. The key point of the technical scheme is to include a steel pipe body, the steel pipe body is coated with an inner coating layer and an outer coating layer, and the steel pipe body and the inner coating layer A high-elastic rubber buffer layer is provided between the steel pipe body and the outer coating layer. The thickness of the high-elastic rubber buffer layer is 0.3-0.6 mm. The inner coating layer and the outer coating layer are both It is a wear-resistant and anti-corrosion layer. The utility model has the advantage that the inner coating layer and the outer coating layer are set as wear-resistant and anti-corrosion layers, which can play a good role in protecting the steel pipe body. Between the steel pipe body and the inner coating layer 1. A high-elastic rubber buffer layer is set between the steel pipe body and the outer coating layer, which can make the deformation of the steel pipe and the wear-resistant anti-corrosion layer different and play the role of tensile buffer, thereby preventing the wear-resistant anti-corrosion layer from breaking.
Description
技术领域technical field
本实用新型涉及一种涂塑复合钢管,更具体地说，它涉及一种耐腐蚀涂塑复合钢管。The utility model relates to a plastic-coated composite steel pipe, more specifically, it relates to a corrosion-resistant plastic-coated composite steel pipe.
背景技术Background technique
环氧树脂涂料广泛应用于对钢管的腐蚀防护，但由于环氧树脂是三维网状结构，存在孔隙，使其抗渗透性差，外界腐蚀粒子容易通过涂层的孔隙达到金属基体表面，发生电化学反应，从而使其防腐蚀性能下降，现有的环氧树脂涂塑钢管的耐腐蚀性能不够理想，使用寿命短。Epoxy resin coatings are widely used in the corrosion protection of steel pipes. However, since epoxy resin has a three-dimensional network structure with pores, it has poor permeability resistance. External corrosion particles can easily reach the surface of the metal substrate through the pores of the coating, and electrochemical corrosion occurs. reaction, thereby reducing its anti-corrosion performance, the corrosion resistance of the existing epoxy resin plastic-coated steel pipes is not ideal, and the service life is short.
目前，申请公布号为CN106010102A的中国专利公开了一种使用寿命长涂塑钢管，它包括钢管和涂覆在所述钢管表面的塑料防腐层，塑料防腐层的原料按重量份包括：酚醛环氧树脂32～40份，双酚A型环氧树脂62～68份，复合稀土盐12～14份，纳米二氧化硅38～42份，沸石粉1～2份，流平剂1.8～2.2份，颜料3～5份，酚类固化剂2～3份，助剂4～6份。本发明提出的使用寿命长涂塑钢管，具有优异的耐腐蚀性能，使用寿命长，而且耐热性能优异，但由于该组分的塑料防腐层致密性较好，使得其形变空间较小，在低温和高温环境下，由于其与钢管本体的形变量不同，发生热胀冷缩时，塑料防腐层与钢管本体的形变量不同会导致塑料防腐层发生破裂，影响涂塑复合钢管的使用寿命。At present, the Chinese patent application publication No. CN106010102A discloses a plastic-coated steel pipe with long service life, which includes a steel pipe and a plastic anti-corrosion layer coated on the surface of the steel pipe. The raw materials of the plastic anti-corrosion layer include: phenolic epoxy 32-40 parts of resin, 62-68 parts of bisphenol A epoxy resin, 12-14 parts of complex rare earth salt, 38-42 parts of nano-silica, 1-2 parts of zeolite powder, 1.8-2.2 parts of leveling agent, 3-5 parts of pigment, 2-3 parts of phenolic curing agent, 4-6 parts of auxiliary agent. The plastic-coated steel pipe with long service life proposed by the present invention has excellent corrosion resistance, long service life, and excellent heat resistance. However, because the plastic anti-corrosion layer of this component is relatively dense, its deformation space is small, and it can be used in Under low-temperature and high-temperature environments, due to the difference in deformation between the steel pipe body and thermal expansion and contraction, the deformation of the plastic anti-corrosion layer and the steel pipe body will cause the plastic anti-corrosion layer to rupture, affecting the service life of the plastic-coated composite steel pipe.
实用新型内容Utility model content
针对现有技术存在的不足，本实用新型的目的在于提供一种耐腐蚀涂塑复合钢管。Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a corrosion-resistant plastic-coated composite steel pipe.
为实现上述目的，本实用新型采用如下技术方案：一种耐腐蚀涂塑复合钢管，包括钢管本体，所述钢管本体上包覆有内涂覆层和外涂覆层，所述钢管本体与内涂覆层之间、钢管本体与外涂覆层之间均设有高弹态橡胶缓冲层，所述高弹态橡胶缓冲层的厚度为0.3～0.6mm，所述内涂覆层和外涂覆层均为耐磨防腐层。In order to achieve the above purpose, the utility model adopts the following technical scheme: a corrosion-resistant plastic-coated composite steel pipe, including a steel pipe body, the steel pipe body is coated with an inner coating layer and an outer coating layer, and the steel pipe body and the inner coating layer A high-elastic rubber buffer layer is provided between the coating layers, between the steel pipe body and the outer coating layer, and the thickness of the high-elastic rubber buffer layer is 0.3-0.6 mm. The inner coating layer and the outer coating layer The coatings are wear-resistant and anti-corrosion layers.
作为优选的，所述耐磨防腐层为酚醛环氧树脂和双酚A型环氧树脂混合涂层。Preferably, the wear-resistant and anti-corrosion layer is a mixed coating of novolak epoxy resin and bisphenol A epoxy resin.
作为优选的，所述酚醛环氧树脂和双酚A型环氧树脂混合涂层的厚度为0.4～0.65mm。Preferably, the mixed coating of novolak epoxy resin and bisphenol A epoxy resin has a thickness of 0.4-0.65mm.
作为优选的，所述酚醛环氧树脂和双酚A型环氧树脂混合涂层相背于钢管本体的一面均喷涂并烧结有复合稀土盐、纳米二氧化硅和沸石粉的混合粉末。Preferably, the mixed coating of novolac epoxy resin and bisphenol A epoxy resin is sprayed and sintered with mixed powder of complex rare earth salt, nano silicon dioxide and zeolite powder on the side opposite to the steel pipe body.
本实用新型相对现有技术相比具有：将内涂覆层和外涂覆层设为耐磨防腐层，能够对钢管本体起到良好的保护作用，在钢管本体与内涂覆层之间、钢管本体与外涂覆层之间设置高弹态橡胶缓冲层，能够使得钢管与耐磨防腐层发生的形变不同时起到拉伸缓冲的作用，从而避免耐磨防腐层发生破裂，为了保证该耐腐蚀涂塑复合钢管的整体结构强度，高弹态橡胶缓冲层的厚度不易过厚，但为了起到良好的保护效果，其厚度也不易过薄，经试验，0.3～0.6mm的厚度最为合适。Compared with the prior art, the utility model has the following advantages: the inner coating layer and the outer coating layer are set as wear-resistant and anti-corrosion layers, which can play a good role in protecting the steel pipe body. Between the steel pipe body and the inner coating layer, A high-elastic rubber buffer layer is set between the steel pipe body and the outer coating layer, which can make the deformation of the steel pipe and the wear-resistant anti-corrosion layer different and play the role of tensile buffer, thereby preventing the wear-resistant anti-corrosion layer from breaking. The overall structural strength of the corrosion-resistant plastic-coated composite steel pipe, the thickness of the high-elastic rubber buffer layer should not be too thick, but in order to achieve a good protective effect, the thickness should not be too thin. After testing, the thickness of 0.3-0.6mm is the most suitable .
附图说明Description of drawings
图1为本实用新型耐腐蚀涂塑复合钢管实施例的结构示意图。Fig. 1 is a schematic structural view of an embodiment of the corrosion-resistant plastic-coated composite steel pipe of the present invention.
图中：1、钢管本体；2、高弹态橡胶缓冲层；3、耐磨防腐层。In the figure: 1. Steel pipe body; 2. High elastic rubber buffer layer; 3. Wear-resistant and anti-corrosion layer.
具体实施方式Detailed ways
下面结合附图对本实用新型耐腐蚀涂塑复合钢管实施例做进一步说明。The embodiments of the corrosion-resistant plastic-coated composite steel pipe of the present invention will be further described below in conjunction with the accompanying drawings.
一种耐腐蚀涂塑复合钢管，包括钢管本体1，钢管本体1上包覆有内涂覆层和外涂覆层，钢管本体1与内涂覆层之间、钢管本体1与外涂覆层之间均设有高弹态橡胶缓冲层2，高弹态橡胶缓冲层2的厚度为0.3～0.6mm，内涂覆层和外涂覆层均为耐磨防腐层3。将内涂覆层和外涂覆层设为耐磨防腐层3，能够对钢管本体1起到良好的保护作用，在钢管本体1与内涂覆层之间、钢管本体1与外涂覆层之间设置高弹态橡胶缓冲层2，能够使得钢管与耐磨防腐层3发生的形变不同时起到拉伸缓冲的作用，从而避免耐磨防腐层3发生破裂，为了保证该耐腐蚀涂塑复合钢管的整体结构强度，高弹态橡胶缓冲层2的厚度不易过厚，但为了起到良好的保护效果，其厚度也不易过薄，经试验，0.3～0.6mm的厚度最为合适A corrosion-resistant plastic-coated composite steel pipe, comprising a steel pipe body 1 covered with an inner coating layer and an outer coating layer, between the steel pipe body 1 and the inner coating layer, and between the steel pipe body 1 and the outer coating layer A high elastic rubber buffer layer 2 is provided between them, the thickness of the high elastic rubber buffer layer 2 is 0.3-0.6mm, and both the inner coating layer and the outer coating layer are wear-resistant and anti-corrosion layers 3 . The inner coating layer and the outer coating layer are set as the wear-resistant anti-corrosion layer 3, which can play a good role in protecting the steel pipe body 1. Between the steel pipe body 1 and the inner coating layer, the steel pipe body 1 and the outer coating layer A high-elastic rubber buffer layer 2 is arranged between them, which can make the deformation of the steel pipe and the wear-resistant anti-corrosion layer 3 different and play the role of stretch buffer, thereby avoiding the rupture of the wear-resistant anti-corrosion layer 3. In order to ensure the corrosion-resistant plastic coating The overall structural strength of the composite steel pipe, the thickness of the high elastic rubber buffer layer 2 should not be too thick, but in order to achieve a good protective effect, its thickness should not be too thin. After testing, the thickness of 0.3-0.6mm is the most suitable
耐磨防腐层3为酚醛环氧树脂和双酚A型环氧树脂混合涂层。酚醛环氧树脂和双酚A型环氧树脂混合涂层的厚度为0.4～0.65mm。酚醛环氧树脂和双酚A型环氧树脂混合涂层相背于钢管本体1的一面均喷涂并烧结有复合稀土盐、纳米二氧化硅和沸石粉的混合粉末。由于纳米二氧化硅和沸石粉的分子结构具有配位严重不足、大的比表面积等诸多表面性质，与酚醛环氧树脂、双酚A型环氧树脂相互配合，可提高本发明的附着力、抗拉伸和防腐蚀等性能，同时复合稀土盐在焙烧过程中性能相应的稀土氧化物，在后期搅拌过程中沉淀于阴极区，使钢管的腐蚀得到有效抑制。而在环氧树脂的结构中，环氧基、羟基和醚氧基上的氧原子上都带有未成键的孤电子对，易受亲电试剂作用，形成络合键；酚醛环氧树脂、双酚A型环氧树脂大分子结构上有多个配位原子，其大分子链上的羟基氧原子和醚键的氧原子和环氧基氧原子相距较近，中间只隔两个碳原子，钢管表面的稀土氧化物半径较大，使酚醛环氧树脂、双酚A型环氧树脂易于和具有多个空轨道的稀土元素形成五元环的鳌合，同时鳌环数目越多，稳定性越大，酚醛环氧树脂、双酚A型环氧树脂、纳米二氧化硅分子和稀土氧化物相互配合提高了本发明的耐热耐腐蚀性能。The wear-resistant and anti-corrosion layer 3 is a mixed coating of novolak epoxy resin and bisphenol A epoxy resin. The thickness of the mixed coating of novolac epoxy resin and bisphenol A epoxy resin is 0.4-0.65mm. Novolak epoxy resin and bisphenol A type epoxy resin mixed coating are sprayed and sintered with composite rare earth salt, nano silicon dioxide and zeolite powder mixed powder on the side opposite to the steel pipe body 1 . Because the molecular structure of nano-silica and zeolite powder has many surface properties such as severe lack of coordination and large specific surface area, it can improve the adhesion, Anti-stretching and anti-corrosion properties, while the rare earth oxides with corresponding properties during the roasting process of the compound rare earth salt, precipitate in the cathode area during the later stirring process, so that the corrosion of the steel pipe is effectively inhibited. In the structure of epoxy resin, the oxygen atoms on the epoxy group, hydroxyl group and ether oxygen group all have unbonded lone electron pairs, which are easily affected by electrophiles to form complex bonds; phenolic epoxy resin, There are multiple coordination atoms in the macromolecular structure of bisphenol A epoxy resin, and the hydroxyl oxygen atom on the macromolecular chain is relatively close to the oxygen atom of the ether bond and the oxygen atom of the epoxy group, and there are only two carbon atoms in the middle. , the rare earth oxide on the surface of the steel pipe has a larger radius, which makes it easy for novolac epoxy resin and bisphenol A epoxy resin to form a five-membered ring with rare earth elements with multiple empty orbitals. At the same time, the more the number of chelated rings, the more stable The greater the resistance, the mutual cooperation of novolac epoxy resin, bisphenol A type epoxy resin, nano silicon dioxide molecules and rare earth oxide improves the heat resistance and corrosion resistance performance of the present invention.
以上所述仅是本实用新型的优选实施方式，本实用新型的保护范围并不仅局限于上述实施例，凡属于本实用新型思路下的技术方案均属于本实用新型的保护范围，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理前提下的若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。The above is only a preferred embodiment of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments. All technical solutions under the idea of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for Those of ordinary skill in the art may make some improvements and modifications without departing from the principles of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028188A (en) * | 2021-01-20 | 2021-06-25 | 浙江康鑫钢管有限公司 | High-strength impact-resistant seamless steel pipe and preparation process thereof |
| CN113107381A (en) * | 2021-04-13 | 2021-07-13 | 皇俊奇 | High-toughness casing pipe for shale gas exploitation |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028188A (en) * | 2021-01-20 | 2021-06-25 | 浙江康鑫钢管有限公司 | High-strength impact-resistant seamless steel pipe and preparation process thereof |
| CN113107381A (en) * | 2021-04-13 | 2021-07-13 | 皇俊奇 | High-toughness casing pipe for shale gas exploitation |
| CN113107381B (en) * | 2021-04-13 | 2024-04-09 | 西安友兴能源科技有限公司 | A high-toughness casing for shale gas development |
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