Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Passivating agent for engine cylinder body

An engine block and passivation technology, applied in the direction of metal material coating process, can solve the problems of high toxicity, harm to the environment and other problems, and achieve the effects of improving dispersion performance, improving passivation performance, and improving anti-corrosion performance.

Inactive Publication Date: 2019-06-28
蚌埠创特新材料科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional metal surface chromate treatment is no longer applicable due to its high toxicity and environmental hazards. The research and development of alternative technologies for passivation treatment of aluminum alloys has attracted widespread attention.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of deactivator that engine block is used, is made from the raw material of following weight part:

[0018] Phosphomolybdic acid 10, benzoic acid 5, modified diatomite 3, modified nano-silica 3, triethylenediamine 2, glycolic acid 4, sodium alginate 2.

[0019] Further, its preparation method comprises the following steps:

[0020] (1) Add phosphomolybdic acid and benzoic acid into distilled water, stir and dissolve at 40°C and 300rpm for 20 minutes, then add 1 / 10 of acetone and 1 / 10 of ethanol into the distilled water, and raise the temperature to 55°C, and then add Add modified diatomaceous earth, continue to stir at 400rpm for 30min, and obtain system A;

[0021] (2) Mix the modified nano-silica with triethylenediamine, glycolic acid, and sodium alginate, and use ultrasonic treatment at 70°C for 40 minutes, then add system A to it, cool down to 10°C, and continue ultrasonic treatment for 30 minutes , and then raise the temperature to 80°C again, and continue ...

Embodiment 2

[0026] A kind of deactivator that engine block is used, is made from the raw material of following weight part:

[0027] Phosphomolybdic acid 12, benzoic acid 8, modified diatomite 4, modified nano-silica 5, triethylenediamine 3, glycolic acid 5, sodium alginate 4.

[0028] Further, its preparation method comprises the following steps:

[0029] (1) Add phosphomolybdic acid and benzoic acid into distilled water, stir and dissolve at 45°C and 400rpm for 25min, then add 3 / 10 acetone and 1 / 5 ethanol to the distilled water, raise the temperature to 58°C, and then add Add modified diatomaceous earth, and continue to stir at 500 rpm for 35 minutes to obtain system A;

[0030] (2) Mix the modified nano-silica with triethylenediamine, glycolic acid, and sodium alginate, and use ultrasonic treatment at 72°C for 45 minutes, then add system A to it, cool down to 11°C, and continue ultrasonic treatment for 35 minutes , and then raise the temperature to 82°C again, and continue ultrasonic...

Embodiment 3

[0035] A kind of deactivator that engine block is used, is made from the raw material of following weight part:

[0036] Phosphomolybdic acid 15, benzoic acid 10, modified diatomite 6, modified nano-silica 7, triethylenediamine 3, glycolic acid 5, sodium alginate 6.

[0037] Further, its preparation method comprises the following steps:

[0038] (1) Add phosphomolybdic acid and benzoic acid into distilled water, stir and dissolve at 50°C and 500rpm for 30min, then add 1 / 5 of acetone and 3 / 10 of ethanol into the distilled water, and raise the temperature to 60°C, and then add Add modified diatomaceous earth, continue stirring at 600rpm for 40min to obtain system A;

[0039] (2) Mix the modified nano-silica with triethylenediamine, glycolic acid, and sodium alginate, and use ultrasonic treatment at 75°C for 50 minutes, then add system A to it, cool down to 12°C, and continue ultrasonic treatment for 40 minutes , and then raise the temperature to 87°C again, and continue to son...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a passivation agent for an engine cylinder body. The passivation agent is non-toxic and environment-friendly, has a relatively excellent passivation and corrosion-resistant effect on aluminum alloy, and is worthy of popularization, firstly, phosphomolybdic acid and benzoic acid are used for carrying out modification treatment on the diatomaceous earth, and a large amount ofphosphomolybdic acid and benzoic acid are fixed on the pore passage and the surface of the diatomaceous earth; on one hand, the compactness of the diatomaceous earth is improved, the adhesive force of the film and the aluminum alloy substrate is improved after the film is passivated, so that the passivation property and the corrosion resistance of the film are improved; and on the other hand, thedispersing performance of the diatomaceous earth is improved, the modified diatomite is added into a passivation film to provide a crystal nucleus adhesion point, and the passivation effect is improved. Carrying out modification treatment on the nano silicon dioxide by using the two-hydrocarbon-based ferrocene, the palladium nano-particles and the ethyl methacrylate, so that the modified nano silicon dioxide coated with the iron and the palladium particles is formed, so that the chemical corrosion of the aluminum alloy is effectively prevented, meanwhile, so that the overall compactness of the aluminum alloy is improved, and the corrosion resistance of the aluminum alloy is improved.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a passivator for an engine block. Background technique [0002] At present, the cylinder blocks of automobile engines are divided into cast iron and cast aluminum. With the rapid development of the automobile industry, cars have entered the lives of ordinary people rapidly, and at the same time, the fuel-saving performance of vehicles has gradually been paid attention to. Aluminum alloys are more widely used due to their light weight and fuel-saving advantages. Due to the low electrode potential of aluminum, contact corrosion is very easy to occur when it is in contact with high-potential metals in a humid environment. Therefore, after the aluminum alloy is processed, surface treatment is required to improve the corrosion resistance of the aluminum alloy. The traditional metal surface chromate treatment is no longer applicable due to its high toxicity and envir...

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
IPC IPC(8): C23C22/56
Inventor 郭艳
Owner 蚌埠创特新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com