Preparation method of conductive ink vehicle

A technology of conductive ink and connecting material, which is applied in ink, household utensils, applications, etc., can solve the problems of low-temperature brittleness, poor solubility of acrylic resin, and high-temperature stickiness, etc., and achieve low viscosity, good non-crystallization, and good fluidity Effect

Inactive Publication Date: 2016-05-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The binder resins in traditional inks are mostly acrylic resin polymers. Acrylic resins have the advantages of high mechanical strength, no aging, no yellowing and good water resistance after film formation, but the solubility of acrylic resins in organic solvents is relatively poor, and Prone to sticky at high temperature and brittle at low temperature

Method used

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  • Preparation method of conductive ink vehicle
  • Preparation method of conductive ink vehicle
  • Preparation method of conductive ink vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of urethane acrylate monomer: Weigh 6.6678 g isophorone diisocyanate IPDI and 3.9000 g hydroxyethyl methacrylate HEPA for a ratio test, and add 2 g of the catalyst hydroquinone. Before the start of the experiment, dry 30ml of acetone in 4A molecular sieve for 1 hour; then put the weighed IPDI and hydroquinone into a three-necked flask, soak in an oil bath, then add the dried acetone, and use an electric mixer Stir at a speed of 300r / min at 40℃ for 100min, add HEPA dropwise to the three-necked flask with a dropper, and measure the -NCO content every half an hour. When the -NCO content reaches the theoretical value of the reaction (12.60%), stop the reaction , Collect reactants, test and analyze.

[0016] Fourier infrared spectrum analyzer was used to characterize and analyze the obtained product. From figure 1 The characterization results of infrared absorption spectroscopy showed that the carbamate group and the corresponding acrylic group existed, and the abs...

Embodiment 2

[0018] Prepare the first generation hyperbranched polyester polyol HBPE-1: In a three-necked flask with a thermometer and a condenser, add 5.4316g pentaerythritol, 0.2780g p-toluenesulfonic acid and 5.3517g DMPA in sequence, and add 20ml acetone and ethanol to mix The liquid is dissolved; the temperature is increased to 140°C, the magnet is added, and nitrogen is put into the oil bath for 40 minutes to remove bubbles and water; the reactants are melted and react until the acid value does not change. After the product was obtained, it was washed several times with ethyl acetate and water, and then placed in a vacuum drying oven at a temperature of 55° C. and an air pressure of 0.1 MPa for 12 hours to obtain the first-generation hyperbranched polyester multi-component Alcohol HBPE-1.

[0019] Prepare the second-generation hyperbranched polyester polyol HBPE-2, the third-generation hyperbranched polyester polyol HBPE-3 and the fourth-generation hyperbranched polyester polyol HBPE-4 ...

Embodiment 3

[0022] The urethane acrylate monomer UA prepared in Example 1 and the third-generation hyperbranched polyester polyol product (HBPE-3) prepared in Example 2 were mixed into a three-necked flask at a ratio of 1:1. Add acetone as a solvent, make them fully contact in the solvent and fully react. The reaction temperature is 70℃, and the mixture is refluxed until the peak in the Fourier spectrum is at 2261cm -1 The -NCO group disappeared. Nitrogen gas was introduced to carry out a reduced pressure reaction for 40 minutes to remove bubbles, the product was rotary evaporated to remove the residual solvent in the product, and finally the product was dried in a vacuum.

[0023] Fourier infrared spectrometer and DSC differential scanning calorimeter were used to characterize and analyze the obtained products. From Figure 5 According to the characterization results of infrared absorption spectroscopy, the product has absorption peaks of carbamate groups and acrylate groups, and the absorp...

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Abstract

The invention discloses a preparation method of a conductive ink vehicle. Hyperbranched urethane acrylate is used as a prepolymer of a UV (ultraviolet) conductive ink; compared with urethane acrylate, the advantages of high activity, low viscosity, good solubility, good film forming property and the like are realized, and the printing property of the ink is improved. The preparation method is characterized in that PER (pentaerythritol ester rosin) and DMPA (dimethylol propionic acid) are used as raw materials, and are polymerized into hyperbranched polyester polyol; IPDI (isophorone diisocyanate) and HEMA (hydroxyethyl methacrylate) are used as raw materials, and are synthesized into an urethane acrylate monomer by a hyperbranched polymer chain expansion method to perform terminating and grafting reaction on the hyperbranched polyester polyol, so as to prepare the novel hyperbranched urethane acrylate. The preparation method has the advantages that the process is simple and controllable, the efficiency is high, the energy consumption is low, and the like; therefore the preparation method is suitable for industrial production.

Description

Technical field [0001] The present invention relates to a preparation technology of an ink binder, in particular to a preparation method of a conductive ink binder. The preparation method is a low viscosity and good fluidity, good solubility, modifiability, and good molding Method for preparing hyperbranched urethane acrylate for conductive ink binder with high resistance and non-crystallinity. Background technique [0002] The binder resins in traditional inks are mostly acrylic resin polymers. Acrylic resins have the advantages of high mechanical strength, resistance to aging, resistance to yellowing, and good water resistance after film formation. However, the solubility of acrylic resins in organic solvents is relatively poor. It is prone to high temperature stickiness and low temperature brittleness. Polyurethane has the advantages of better solubility in organic solvents, elasticity, gloss and stable hardness, etc., and it is not as good as acrylic resin in water resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/102C08G18/67C08G18/42
CPCC09D11/52C08G18/4283C08G18/672C09D11/102
Inventor 陈奇峰米婷陈广学邰晶磊
Owner SOUTH CHINA UNIV OF TECH
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