CN113578717A - 一种提高涂塑钢管防腐性能的喷涂方法 - Google Patents
一种提高涂塑钢管防腐性能的喷涂方法 Download PDFInfo
- Publication number
- CN113578717A CN113578717A CN202110939795.2A CN202110939795A CN113578717A CN 113578717 A CN113578717 A CN 113578717A CN 202110939795 A CN202110939795 A CN 202110939795A CN 113578717 A CN113578717 A CN 113578717A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- spraying
- plastic
- coated steel
- primer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 45
- 239000010959 steel Substances 0.000 title claims abstract description 45
- 239000004033 plastic Substances 0.000 title claims abstract description 28
- 229920003023 plastic Polymers 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 230000007797 corrosion Effects 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 44
- 239000003973 paint Substances 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000004593 Epoxy Substances 0.000 claims description 29
- 239000004743 Polypropylene Substances 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 19
- -1 polypropylene Polymers 0.000 claims description 19
- 229920001155 polypropylene Polymers 0.000 claims description 19
- 238000005488 sandblasting Methods 0.000 claims description 17
- 108010081750 Reticulin Proteins 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 230000003749 cleanliness Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 abstract description 18
- 238000000576 coating method Methods 0.000 abstract description 18
- 239000000853 adhesive Substances 0.000 abstract description 15
- 230000001070 adhesive effect Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920006334 epoxy coating Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/548—No curing step for the last layer
- B05D7/5483—No curing step for any layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/162—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2254/00—Tubes
- B05D2254/02—Applying the material on the exterior of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/40—Form of the coating product, e.g. solution, water dispersion, powders or the like where the carrier is not clearly specified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0016—Abrading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/002—Sandblasting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
本发明涉及涂塑钢管生产技术领域,特别涉及一种提高涂塑钢管防腐性能的喷涂方法;包括如下步骤:S1:预处理,S2:底漆喷涂,S3:加强层,S4:面漆喷涂,S5:喷涂完成的钢管冷却并质检,得到成品涂塑钢管。本发明的喷涂方法,能够有效提高喷涂在基材表面上的防腐涂层的附着力,还能够提高底漆与基材、底漆与面漆的结合程度,使涂层的附着力提高,避免了涂层中出现孔隙,增强了涂塑钢管的耐腐蚀性能。
Description
技术领域
本发明涉及涂塑钢管生产技术领域,特别涉及一种提高涂塑钢管防腐性能的喷涂方法。
背景技术
为了使钢管能够有效地阻隔腐蚀物质,通常对钢管的外表面进行防腐处理,来提高其抗腐蚀能力,从而延长钢管的使用寿命,使之更好地应用于海洋工程、石油输送工程等领域。
目前的防腐钢管包括钢管本体和设置在钢管本体外表面上的环氧粉末涂层,其加工方法为:钢管本体先由加热组件加工成高温的钢管本体,再向高温的钢管本体外表面上喷涂一层环氧粉末,使环氧粉末附着在高温钢管本体的外表面上,形成熔结环氧涂层。但是,这种结构的防腐钢管在使用时存在缺陷,环氧涂层的附着力不好,牢固度不高,仍旧存在涂层脱落的问题,无法适用于严苛的使用环境。
为此,提出一种提高涂塑钢管防腐性能的喷涂方法。
发明内容
本发明的目的在于提供一种提高涂塑钢管防腐性能的喷涂方法,以解决上述技术中提出的问题。
为了实现上述目的,本发明的技术方案如下:
一种提高涂塑钢管防腐性能的喷涂方法,包括如下步骤:
S1:预处理,对基材进行喷砂处理,保证其表面平滑,并且其表面清洁度达Sa2.5级,随后将经过打磨的基材表面设置划痕,然后加热至100~125℃;
S2:底漆喷涂,保持温度不变,在基材表面喷涂无溶剂环氧防腐底漆;
S3:加强层,在无溶剂环氧防腐底漆未固化时,将网状纤维均匀包裹在基材上,形成加强层;
S4:面漆喷涂,在加强层外喷涂丙烯酸聚氨酯面漆;
S5:喷涂完成的钢管冷却并质检,得到成品涂塑钢管。
进一步的,本发明涉及的质检工序,对成品涂塑钢管的涂层外观、厚度、管端长度进行质量检测。
进一步的,本发明涉及的冷却采用水冷降温,使得涂塑钢管能够快速冷却。
进一步的,本发明涉及的无溶剂环氧防腐底漆采用四川星利石大涂装材料有限公司生产的环氧富锌重防腐底漆。
进一步的,本发明涉及的丙烯酸聚氨酯面漆采用四川星利石大涂装材料有限公司生产的XLZ-1736丙烯酸耐候防腐涂料。
具体的,所述S1的喷砂处理中采用铸铁砂为磨料,粒径为0.5mm~1.5mm,喷嘴距离基材表面的距离为100mm~200mm,采用0.6~0.9MPa的气压对基材表面进行喷砂,喷砂时长为10~70s,喷砂方向与基材表面法线的夹角为20~30°。
具体的,所述S1的划痕为螺纹形或波浪形,划痕的深度为0.3~0.5cm,划痕的宽度为0.2~0.4cm。
具体的,所述S2的底漆喷涂厚度为300~500μm。
具体的,所述S3的加强层厚度为100~200μm,所述网状纤维为聚丙烯纤维网,所述聚丙烯纤维网表面经过表面微糙化处理。
进一步的,本发明涉及的聚丙烯纤维网采用常州筑威建筑材料有限公司生产的DXB聚丙烯网状纤维,采用的聚丙烯纤维网的长度为19mm,密度为0.91kg/m3,直径<100um,经过表面微糙化处理后,能够提高聚丙烯纤维网与基材表面的牢固度,并且使聚丙烯纤维网充分均匀地分散在无溶剂环氧防腐底漆表面,提高聚丙烯纤维网与无溶剂环氧防腐底漆之间的附着力,在无溶剂环氧防腐底漆表面形成一种乱向支撑体系,分散无溶剂环氧防腐底漆的定向应力,同时,聚丙烯纤维网还作为连接桥梁,进一步增强无溶剂环氧防腐底漆与丙烯酸聚氨酯面漆之间的附着力。
具体的,所述S4的面漆喷涂厚度为300~500μm。
进一步的,本发明涉及的基材在经过烘干处理后1~3h后在进行底漆喷涂,同时,底漆与加强的时间间隔为2~3h,并且,加强与面漆的时间间隔为12~15h。
本发明的有益效果为:
(1)本发明采用喷砂处理,使得基材表面干净无污、无印无痕,满足其表面清洁度达Sa2.5级,使得基材表面的锈皮等污物清除,并在基材表面形成毛面,能够提高基材表面与底漆的结合力;
(2)本发明通过在经过打磨的基材表面设置划痕,结合喷砂处理形成的毛面,能够大大的提高基材表面与底漆的结合力,使得底漆能够更好的粘接在基材表面;
(3)本发明采用网状纤维作为加强材料,一方面,能够均匀地分散在无溶剂环氧防腐底漆表面,提高聚丙烯纤维网与无溶剂环氧防腐底漆之间的附着力,另一方面,聚丙烯纤维网能够作为连接桥梁,进一步增强无溶剂环氧防腐底漆与丙烯酸聚氨酯面漆之间的附着力;
(4)本发明的喷涂方法,能够有效地提高喷涂在基材表面上的防腐涂层的附着力,保证涂层不脱落。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅是本发明的一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
一种提高涂塑钢管防腐性能的喷涂方法,包括如下步骤:
S1:预处理,对基材进行喷砂处理,保证其表面平滑,并且其表面清洁度达Sa2.5级,随后将经过打磨的基材表面设置划痕,然后加热至100~125℃;
S2:底漆喷涂,保持温度不变,在基材表面喷涂无溶剂环氧防腐底漆;
S3:加强层,在无溶剂环氧防腐底漆未固化时,将网状纤维均匀包裹在基材上,形成加强层;
S4:面漆喷涂,在加强层外喷涂丙烯酸聚氨酯面漆;
S5:喷涂完成的钢管冷却并质检,得到成品涂塑钢管。
进一步的,本发明的喷涂方法中在底漆与面漆之间设置加强层,增强无溶剂环氧防腐底漆与丙烯酸聚氨酯面漆之间的附着力;另外,聚丙烯纤维网是由多根纤维单丝相互交连而成的网状结构,当无溶剂环氧防腐底漆未固化时,聚丙烯纤维网被挤压撕开成为一根根两头带钩形的单丝且相互牵扣多向分布,增强了聚丙烯纤维网和无溶剂环氧防腐底漆的粘接力,大量聚丙烯纤维在无溶剂环氧防腐底漆中呈三维立体分布,提供网状承托作用,进而改善传统底漆的附着力,从而增强无溶剂环氧防腐底漆与丙烯酸聚氨酯面漆之间的附着力。
进一步的,本发明的喷涂方法中采用铸铁砂为磨料,也可采用石英砂作为磨料,采用0.6~0.9MPa的压缩空气为动力,以形成高速喷射束将铸铁砂高速喷射到基材表面,使基材表面的外表面发生变化,其中,喷嘴距离基材表面的距离为100mm~200mm,喷砂时长为10~70s,喷砂方向与基材表面法线的夹角为20~30°,使得基材表面获得Sa2.5级的表面清洁度以及Ry30~50μm的表面粗糙度,进而提高了基材与涂层之间的附着力,延长了涂膜的耐久性,也有利于涂料的流平和装饰。
进一步的,本发明的划痕为螺纹形或波浪形,相较于传统单个Y形或Z形的划痕,本发明采用连续的划痕,结合喷砂处理形成的毛面,能够大大的提高基材表面与底漆的结合力,使得底漆能够更好的粘接在基材表面,其中,划痕的深度为0.3~0.5cm,划痕的宽度为0.2~0.4cm。
进一步的,本发明的底漆喷涂厚度为300~500μm,其中,底漆喷涂厚度小于300μm时,无法完全盖住毛糙的基材,附着力也不佳;当底漆喷涂厚度大于500μm时,在基材表面易出现流挂现象,影响后续面漆喷涂效果。
进一步的,本发明的面漆喷涂厚度为300~500μm,其中,面漆喷涂厚度小于300μm时,无法完全盖住加强层,附着力也不佳;当面漆喷涂厚度大于500μm时,在加强层表面易出现流挂现象,影响后续面漆喷涂效果,同时还影响凝固时间,影响生产效率。
具体的,本发明的提高涂塑钢管防腐性能的喷涂方法,包括如下步骤:
(1)对基材进行喷砂处理,保证其表面平滑,并且其表面清洁度达Sa2.5级,表面粗糙度为Ry30~50μm;
(2)在经过打磨的基材表面设置划痕,其中,划痕为螺纹形或波浪形,划痕的深度为0.3~0.5cm,划痕的宽度为0.2~0.4cm;
(3)利用清水对基材表面进行冲洗,随后加热至100~125;
(4)经过烘干处理后1~3h后在进行底漆喷涂,无溶剂环氧防腐底漆采用四川星利石大涂装材料有限公司生产的环氧富锌重防腐底漆,底漆喷涂厚度为300~500μm;
(5)在无溶剂环氧防腐底漆未固化时,将网状纤维均匀包裹在基材上,形成加强层,其中,加强层厚度为100~200μm,所述网状纤维为聚丙烯纤维网,所述聚丙烯纤维网表面经过表面微糙化处理,底漆与加强的时间间隔为2~3h;
(6)在加强层外喷涂丙烯酸聚氨酯面漆,面漆喷涂厚度为300~500μm,在无溶剂环氧防腐底漆采用四川星利石大涂装材料有限公司生产的环氧富锌重防腐底漆,并且加强与面漆的时间间隔为12~15h;
(7)喷涂完成的钢管冷却并质检,得到成品涂塑钢管,其中,冷却采用水冷降温,使得涂塑钢管能够快速冷却;质检工序,对成品涂塑钢管的涂层外观、厚度、管端长度进行质量检测。
进一步的,本发明的喷涂方法,能够有效提高喷涂在基材表面上的防腐涂层的附着力,还能够提高底漆与基材、底漆与面漆的结合程度,使涂层的附着力提高,避免了涂层中出现孔隙,增强了涂塑钢管的耐腐蚀性能。
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。
Claims (6)
1.一种提高涂塑钢管防腐性能的喷涂方法,其特征在于,包括如下步骤:
S1:预处理,对基材进行喷砂处理,保证其表面平滑,并且其表面清洁度达Sa2.5级,随后将经过打磨的基材表面设置划痕,然后加热至100~125℃;
S2:底漆喷涂,保持温度不变,在基材表面喷涂无溶剂环氧防腐底漆;
S3:加强层,在无溶剂环氧防腐底漆未固化时,将网状纤维均匀包裹在基材上,形成加强层;
S4:面漆喷涂,在加强层外喷涂丙烯酸聚氨酯面漆;
S5:喷涂完成的钢管冷却并质检,得到成品涂塑钢管。
2.根据权利要求1所述的一种提高涂塑钢管防腐性能的喷涂方法,其特征在于,所述S1的喷砂处理中采用铸铁砂为磨料,粒径为0.5mm~1.5mm,喷嘴距离基材表面的距离为100mm~200mm,采用0.6~0.9MPa的气压对基材表面进行喷砂,喷砂时长为10~70s,喷砂方向与基材表面法线的夹角为20~30°。
3.根据权利要求1所述的一种提高涂塑钢管防腐性能的喷涂方法,其特征在于,所述S1的划痕为螺纹形或波浪形,划痕的深度为0.3~0.5cm,划痕的宽度为0.2~0.4cm。
4.根据权利要求1所述的一种提高涂塑钢管防腐性能的喷涂方法,其特征在于,所述S2的底漆喷涂厚度为300~500μm。
5.根据权利要求1所述的一种提高涂塑钢管防腐性能的喷涂方法,其特征在于,所述S3的加强层厚度为100~200μm,所述网状纤维为聚丙烯纤维网,所述聚丙烯纤维网表面经过表面微糙化处理。
6.根据权利要求1所述的一种提高涂塑钢管防腐性能的喷涂方法,其特征在于,所述S4的面漆喷涂厚度为300~500μm。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110939795.2A CN113578717A (zh) | 2021-08-17 | 2021-08-17 | 一种提高涂塑钢管防腐性能的喷涂方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110939795.2A CN113578717A (zh) | 2021-08-17 | 2021-08-17 | 一种提高涂塑钢管防腐性能的喷涂方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113578717A true CN113578717A (zh) | 2021-11-02 |
Family
ID=78258169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110939795.2A Pending CN113578717A (zh) | 2021-08-17 | 2021-08-17 | 一种提高涂塑钢管防腐性能的喷涂方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113578717A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114101004A (zh) * | 2021-11-23 | 2022-03-01 | 浙江德裕科技有限公司 | 窗轨表面涂覆的中间层涂料结构及其形成工艺 |
CN116697193A (zh) * | 2023-06-13 | 2023-09-05 | 广东腐蚀科学与技术创新研究院 | 绝热防腐涂层预制保温工业管道及其生产方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2656780Y (zh) * | 2003-09-28 | 2004-11-17 | 中国石油天然气股份有限公司 | 石油沥青复合外防腐层管道 |
CN2819004Y (zh) * | 2005-08-11 | 2006-09-20 | 中国石油天然气集团公司 | 高温涂敷的丙烯酸聚氨酯外防腐涂层钢管 |
CN201041275Y (zh) * | 2007-04-03 | 2008-03-26 | 中国石油集团工程技术研究院 | 带有抗冲刷耐腐蚀涂层的饮用水输送管 |
CN104975563A (zh) * | 2014-04-11 | 2015-10-14 | 中铁工程设计咨询集团有限公司 | 一种钢桥面板桥面铺装结构及其铺装方法 |
CN109174593A (zh) * | 2018-11-27 | 2019-01-11 | 山东共达电力设备有限公司 | 一种提高涂塑钢管防腐性能的喷涂方法 |
CN110639781A (zh) * | 2019-09-10 | 2020-01-03 | 云南固特邦钢塑管道制造有限公司 | 一种钢管表面处理工艺 |
CN211591544U (zh) * | 2020-01-13 | 2020-09-29 | 山东国能实业有限公司 | 一种矿用焊法兰钢管表面抗蚀防腐复合涂层结构 |
-
2021
- 2021-08-17 CN CN202110939795.2A patent/CN113578717A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2656780Y (zh) * | 2003-09-28 | 2004-11-17 | 中国石油天然气股份有限公司 | 石油沥青复合外防腐层管道 |
CN2819004Y (zh) * | 2005-08-11 | 2006-09-20 | 中国石油天然气集团公司 | 高温涂敷的丙烯酸聚氨酯外防腐涂层钢管 |
CN201041275Y (zh) * | 2007-04-03 | 2008-03-26 | 中国石油集团工程技术研究院 | 带有抗冲刷耐腐蚀涂层的饮用水输送管 |
CN104975563A (zh) * | 2014-04-11 | 2015-10-14 | 中铁工程设计咨询集团有限公司 | 一种钢桥面板桥面铺装结构及其铺装方法 |
CN109174593A (zh) * | 2018-11-27 | 2019-01-11 | 山东共达电力设备有限公司 | 一种提高涂塑钢管防腐性能的喷涂方法 |
CN110639781A (zh) * | 2019-09-10 | 2020-01-03 | 云南固特邦钢塑管道制造有限公司 | 一种钢管表面处理工艺 |
CN211591544U (zh) * | 2020-01-13 | 2020-09-29 | 山东国能实业有限公司 | 一种矿用焊法兰钢管表面抗蚀防腐复合涂层结构 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114101004A (zh) * | 2021-11-23 | 2022-03-01 | 浙江德裕科技有限公司 | 窗轨表面涂覆的中间层涂料结构及其形成工艺 |
CN116697193A (zh) * | 2023-06-13 | 2023-09-05 | 广东腐蚀科学与技术创新研究院 | 绝热防腐涂层预制保温工业管道及其生产方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN113578717A (zh) | 一种提高涂塑钢管防腐性能的喷涂方法 | |
CN101549341B (zh) | 一种管道内外壁涂装工艺及设备 | |
CN107814579B (zh) | 一种超疏水纳米陶瓷材料及其形成的涂层 | |
CN201437084U (zh) | 一种复合防腐衬里 | |
CN102774112A (zh) | 海工环境下钢结构的合金树脂复合防腐涂层及其施工工艺 | |
CN113481453B (zh) | 一种多体系防护层钢筋及其制备方法 | |
CN110586443A (zh) | 一种陆上风电塔筒防腐新工艺 | |
WO2024175073A1 (zh) | 一种覆土罐的防腐涂装工艺 | |
CN105114708B (zh) | 防腐抗紫外线露空钢质燃气管道的加工方法 | |
CN102211080A (zh) | 钢结构表面的复合涂层防腐方法 | |
CN111828777B (zh) | 管道防腐涂层加工方法 | |
KR101554983B1 (ko) | 착빙설이 방지되는 알루미늄 송전선의 제조방법 | |
CN105586561A (zh) | 一种钢结构防腐工艺 | |
CN105176309A (zh) | 一种涂层钢筋及其制备方法 | |
CN105333239B (zh) | 一种融结环氧纤维复合钢管及其加工方法 | |
CN101780449A (zh) | 钢绞线防腐层的涂装方法 | |
CN111849351A (zh) | 一种复合材料及其制备方法、耐磨防腐涂层和应用 | |
CN114015328A (zh) | 一种改性环氧锌基涂层钢筋及其制备方法 | |
CN114277331B (zh) | 一种塔筒表面防护复合材料及其制备方法和应用 | |
CN111515099A (zh) | 一种钢结构表面无气喷涂工艺 | |
CN216473431U (zh) | 一种钢轨防护的热喷涂层结构 | |
CN205190990U (zh) | 一种融结环氧纤维复合钢管 | |
CN210506177U (zh) | 一种高固体分环氧树脂长效防锈底漆 | |
CN205298853U (zh) | 一种耐高温、高湿、高盐雾的钢管 | |
CN103407227A (zh) | 一种新型复合钢带及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211102 |