Synthetic method of organosilicon polyurethane-acrylic ester ternary composite ionomer emulsion

An acrylate and ternary composite technology, which is applied in the field of synthesis of silicone-polyurethane-acrylate ternary composite ionomer emulsions, can solve the problems that ionomer emulsions are rarely reported, and achieve enhanced water resistance and performance Stable and good compatibility

Inactive Publication Date: 2008-10-08
SHANGHAI UNIV
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is a relatively new work to make ionomers into stable emulsions. In recent years, there have also been reports o

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
  • Synthetic method of organosilicon polyurethane-acrylic ester ternary composite ionomer emulsion
  • Synthetic method of organosilicon polyurethane-acrylic ester ternary composite ionomer emulsion
  • Synthetic method of organosilicon polyurethane-acrylic ester ternary composite ionomer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] The following is an example of preparing silicone-polyurethane-acrylate ionomer emulsion according to the present invention, with the following process and steps:

[0027] (1) Synthesis of silicone polyurethane prepolymer

[0028] Mix 90ml of methyl ethyl ketone solvent with 0.1mol of toluene diisocyanate (TDI) and add it to a nitrogen-protected three-necked flask, and add three drops of the catalyst dibutyltin dilaurate (DBT). The temperature is raised to 60℃ and slowly dripped. Add hydroxy-terminated polydimethylsiloxane, and the content of hydroxy-terminated polydimethylsiloxane accounts for 22% of the mass percentage of toluene diisocyanate. The dripping is completed in about 1.5 hours, and the reaction is continued for 1.5 hours after the dripping is completed. Then, polypropylene glycol (PPG1000) was added dropwise, the molar ratio of toluene diisocyanate (TDI) to polypropylene glycol was 1:1, and the dropping was completed in about 1.5 hours. After...

Example Embodiment

[0033] Example 2

[0034] The synthesis method of the silicone-polyurethane-acrylate ternary composite ionomer emulsion of this example is basically the same as that of Example 1, except that the mass percentage of cationic silicone polyurethane prepolymer (PU) is shown in Table 1. The influence of different cationic silicone polyurethane prepolymer (PU) mass percentage content on the performance of copolymerized emulsion is listed. It can be seen from the table that as the content of PU increases, the color of the emulsion becomes lighter, and the amount of gel in the copolymerization reaction decreases. The copolymer emulsion is also more stable. Because PU prepolymer contains a large number of ionic bonds and also contains hydrophilic and lipophilic groups, it can play a good emulsification effect on emulsion polymerization. Therefore, the increase in PU content is helpful to the emulsion polymerization reaction, so the synthesized emulsion is more stable and the amount of gel is...

Example Embodiment

[0040] Example 3

[0041] The synthesis method of the silicone-polyurethane-acrylate ternary composite ionomer emulsion of this example is basically the same as that of Example 1, except for the mass percentage of silicone. Table 3 lists the content of silicone The effect of changes on the mechanical properties of the coating film. It can be seen from the table that the mechanical properties of the coating film have been greatly improved. The hardness of the coating film can reach 2H when the silicone content is less than 52%, the adhesion can reach zero, and the impact strength is all qualified. Analyzing the water resistance data of the coating film, it is concluded that the water resistance of the coating film has been greatly improved through the ionic bonding between acrylate and polyurethane. At the same time, with the increase of silicone content, the water resistance of the coating film has also been strengthened.

[0042] Table 4 lists the influence of the change of silic...

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 relates to a synthesis method of silicone-polyurethane-acrylate ternary composite ionomer emulsion as follows: first, hydroxy-terminated poly-dimethylsiloxane, N-methyl-diethanolamine, toluene diisocyanate, polypropylene glycol and others are used to prepare water-based silicone modified polyurethane; under the condition that the silicone modified polyurethane serves as emulsifier, the silicone modified polyurethane is polymerized and reacted with acrylic monomer to prepare stable silicone-polyurethane-acrylate ionomer emulsion. The silicone-polyurethane-acrylate ionomer emulsion is dried to obtain the silicone-polyurethane-acrylate coating. The synthesis method of the invention has simple process and low cost. The prepared ternary composite ionomer product combines the outstanding performances of the three components and can be applied to automobiles, household appliances, metal tools, buildings, textiles, paints and many other fields.

Description

technical field [0001] The invention relates to a method for synthesizing an organosilicon-polyurethane-acrylate ternary composite ionomer emulsion, and belongs to the technical field of polymer chemical synthesis. Background technique [0002] Silicone is a polymer in which silicon and oxygen atoms are alternately combined to form a siloxane chain inorganic skeleton, and organic groups such as methyl groups are connected to silicon atoms. The bond energy of siloxane bonds is much greater than that of carbon-carbon bonds, which is an important reason for the thermal stability and weather resistance of siloxane. Due to its unique chemical structure, polysiloxane has a series of excellent properties, such as excellent high and low temperature resistance, excellent insulation and chemical stability, hydrophobicity and moisture resistance, physiological inertness and biocompatibility. Since the industrial application in the 1940s, it has been extensively researched and applied....

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): C08G81/02C08G18/83C08G18/40C08G18/61C08F20/10C08F2/22
Inventor 张剑秋俎建华黄勤丁宏博王捷
Owner SHANGHAI UNIV
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