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

EDTA-2Na-modified phosphate bonding agent and preparation method and application thereof

A disodium ethylenediamine tetraacetate and phosphate technology, which is applied in the manufacture of tools, casting molding equipment, metal processing equipment, etc., can solve the problems of poor moisture absorption resistance, unstable performance, and low adhesion

Active Publication Date: 2019-04-02
HUBEI UNIV OF TECH +1
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with traditional organic resin binders, it has the characteristics of unstable performance, poor moisture absorption resistance, and low adhesion.

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
  • EDTA-2Na-modified phosphate bonding agent and preparation method and application thereof
  • EDTA-2Na-modified phosphate bonding agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Raw material ratio:

[0050] 338g of 85% industrial phosphoric acid, 68g of 320 mesh aluminum hydroxide powder, 12g of boric acid, 4g of silicic acid, 8g of light magnesium oxide, 0.25g of copper oxide, 0.25g of iron sulfate, 8g of EDTA-2Na, 200g of purified water.

[0051] Preparation steps:

[0052] (1) Weigh each component by the above proportioning ratio;

[0053] (2) Add industrial phosphoric acid into the reaction kettle and heat to 110-120°C while stirring;

[0054] (3) Add 1 / 2 of the aluminum hydroxide powder into the reaction kettle, stir slowly, and continue to heat up to 110-120°C;

[0055] (4) When the reaction solution is clear and transparent, add the remaining 1 / 2 aluminum hydroxide powder into the reaction kettle, keep the temperature stable, and continue stirring until the reaction solution is transparent.

[0056] (5) Add 50ml of water, stir and heat to 110-120°C;

[0057] (6) Add boric acid and silicic acid powder, continue heating and stirring un...

Embodiment 2

[0064] Raw material ratio:

[0065] 338g of 85% industrial phosphoric acid, 68g of 320 mesh aluminum hydroxide powder, 12g of boric acid, 4g of silicic acid, 8g of light magnesium oxide, 0.25g of copper oxide, 0.25g of iron sulfate, 12g of EDTA-2Na, 200g of purified water.

[0066] The preparation steps are the same as in Example 1.

Embodiment 3

[0068] Raw material ratio:

[0069]338g of 85% industrial phosphoric acid, 68g of 320 mesh aluminum hydroxide powder, 12g of boric acid, 4g of silicic acid, 8g of light magnesium oxide, 1g of copper oxide, 0.25g of iron sulfate, 10g of EDTA-2Na, 200g of purified water.

[0070] The preparation steps are the same as in Example 1.

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
Average tensile strengthaaaaaaaaaa
Average tensile strengthaaaaaaaaaa
Average tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a EDTA-2Na-modified phosphate bonding agent and a preparation method and application thereof. The bonding agent comprises the following raw materials including 52.46-52.94 parts of industrial phosphoric acid, 10.55-10.65 parts of aluminum hydroxide powder, 0.621-0.626 part of silicic acid, 1.863-1.879 parts of boric acid, 1.242-1.253 parts of light magnesium oxide, 31.04-31.32 parts of water, 0.039-0.31 part of copper oxide, 0.039 part of ferric sulfate and 1.25-1.87 parts of EDTA-2Na. In the preparation process, the above raw materials are added in specific sequence, heated and stirred until reacting completely and finally are discharged. The prepared modified phosphate bonding agent can obviously improve the strength of sand molds and shorten the solidifying timeof the sand molds.

Description

technical field [0001] The invention belongs to the field of foundry industry, and in particular relates to a method for preparing a phosphate binder modified by an EDTA-2Na complex and a method for using the same. Background technique [0002] In foundry production, the problem of chemical pollution caused by organic resins has been difficult to solve. As a new type of foundry inorganic binder, phosphate binder has excellent environmental protection and collapsibility. It is odorless, non-toxic and non-polluting. The characteristics can significantly reduce the pollution to the environment and improve the working environment of front-line workers. However, compared with the traditional organic resin binder, it has the characteristics of unstable performance, poor moisture absorption resistance, and low adhesive force. Aiming at the relevant characteristics of phosphate binders, modifying them, such as adding some simple acid modifiers and metal oxides, can improve the perf...

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): B22C1/16
CPCB22C1/167
Inventor 张友寿周磊叶锦瑞夏露王性军刘志红张文博叶珏磊
Owner HUBEI UNIV OF TECH
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