Metallocene polypropylene modified material for corrosion-inhibiting coating of steel pipe and preparation method and application thereof

A metallocene polypropylene and anti-corrosion coating technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of using nano-reinforced materials and other problems that are not mentioned, and achieve outstanding UV aging resistance and thermal resistance. Oxygen aging performance, excellent impact resistance, and the effect of wide coating processing range

Active Publication Date: 2009-09-02
GUANGZHOU LUSHAN NEW MATERIALS +1
View PDF1 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents did not mention the use of metallocene polypropylene as the matrix resin, nor the use of nano-reinforced materials, nor the application of anti-corrosion coatings on 2PP steel pipes, nor did they mention that the material was passed through flow. The process of extending, winding coating or direct extrusion coating on the outer layer of steel pipe

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Metallocene polypropylene modified material for corrosion-inhibiting coating of steel pipe and preparation method and application thereof
  • Metallocene polypropylene modified material for corrosion-inhibiting coating of steel pipe and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Formula: 90wt% metallocene polypropylene (mPP), 5.3wt% block copolymerized polypropylene, 0.3wt% metal soap thermal oxygen stabilizer, 0.5wt% benzophenone ultraviolet absorber and hindered methyl piperidine Light stabilizer, 0.3wt% titanate coupling agent and stearic acid amide dispersant, 0.6wt% nano CaCO 3 , 3wt% black masterbatch.

[0027] The above-mentioned components are extruded and granulated by plasticizing and blending process with a twin-screw extruder, the length-to-diameter ratio of the extruder is L / D=40:1, and the processing temperature is 160-210°C.

Embodiment 2

[0029] Formula: 80wt% metallocene polypropylene (mPP), 17.3wt% block copolymer polypropylene, 0.5wt% metal soap thermal oxygen stabilizer, 0.7wt% chlorinated benzotriazole ultraviolet absorber and hindered phosphorous acid Ester light stabilizer, 0.5wt% polypropylene dispersant, 1.0wt% nano talcum powder.

[0030] The above-mentioned components are extruded and granulated by plasticizing and blending process with a twin-screw extruder, the length-to-diameter ratio of the extruder is L / D=40:1, and the processing temperature is 160-210°C.

Embodiment 3

[0032] Formula: 75wt% metallocene polypropylene (mPP), 21.4wt% block copolymer polypropylene and random copolymer polypropylene mixture, 0.6wt% benzofuranone thermal oxygen stabilizer, 0.8wt% benzophenone ultraviolet Absorbent and hindered methyl piperidine light stabilizer, 0.7wt% silane coupling agent, 1.3wt% nano TiO 2 .

[0033] The above-mentioned components are extruded and granulated by plasticizing and blending process with a twin-screw extruder, the length-to-diameter ratio of the extruder is L / D=40:1, and the processing temperature is 160-210°C.

[0034] The properties of the products of Examples 1-3 are shown in Table 1.

[0035] Table 1

[0036]

[0037]

[0038]It can be seen from the table that the products of Examples 1-3 all have outstanding thermal oxygen resistance, light aging performance and excellent comprehensive performance, which can greatly prolong the service life of anti-corrosion steel pipes and broaden the service environment of anti-corros...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a metallocene polypropylene modified material for a corrosion-inhibiting coating of a steel pipe and a preparation method and application thereof. A formula of the material comprises 65 to 95 weight percent of metallocene polypropylene, 3 to 30 weight percent of co-polypropylene, 0.01 to 4 weight percent of thermal oxygen stabilizer, 0.03 to 3 weight percent of ultraviolet absorbent and light stabilizer, 0.02 to 5 weight percent of functional additive, 0.01 to 3 weight percent of inorganic nanometer reinforced material, and 0 to 5 weight percent of black color batch, and the material is prepared by adopting a double screw extruder to carry out plasticizing blending technology for extrusion and pelletization. The metallocene polypropylene modified material has wide casting and coating processing range, has strong adaptability to bottom glue of hot melt adhesives, has outstanding ultraviolet light aging resistance and thermal-oxidative aging resistance, and has excellent shock resistance and surface scratch resistance as well as extremely high environmental stress cracking resistance. The material can be suitable for terrestrial pipelines at continuous working temperature high up to 110 DEG C, and is also suitable for offshore pipelines atcertain special continuous working temperature high up to 140 DEG C at the same time.

Description

technical field [0001] The invention relates to the technical field of pipeline anticorrosion coatings, in particular to a preparation method, characteristics and application of a metallocene polypropylene modified material for steel pipe anticorrosion coatings. Background technique [0002] After years of development and evolution of pipeline anti-corrosion coatings and survival of the fittest, until the mid-1990s, most large-scale pipeline projects in China used 3PE anti-corrosion coatings. Due to the construction of Sudan pipeline projects in China in recent years, people have gradually recognized 3PP anti-corrosion coatings. layer. The processing performance of PP and PE is similar, and the 2 / 3PP coating can be produced by using the 2 / 3PE production line without the need to build a special 2 / 3PP production line. Compared with 2 / 3PE coating, the more prominent advantage of 2 / 3PP coating is the higher heat resistance level and hardness, which is determined by the Vicat so...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K13/02C08K5/098C08K5/1535C08K5/07C08K5/3475C08K3/26C08K3/36C08K3/22C08K9/04B29B9/06C09D5/08C09D123/26F16L58/10
Inventor 范德辉陈占春唐舫成汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap