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Preparation method of comb-shaped organic silicon modified waterborne polyurethane, obtained polyurethane and application of comb-shaped organic silicon modified waterborne polyurethane

A technology of water-based polyurethane and silicone, which is applied in the direction of improved hand-feeling fibers, wear-resistant fibers, textiles and papermaking, etc. It can solve the problems of affecting the appearance, reducing the hydrophilicity of fabrics, and poor hygroscopicity.

Active Publication Date: 2021-09-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, amino silicone oil has many disadvantages. During the application process, the emulsion is easy to demulsify and produce oil spots on the fabric, which affects the appearance. At the same time, after finishing on the fabric, the hydrophilic property of the fabric will decrease, resulting in poor hygroscopicity and other shortcomings.
At the same time, the softness, smoothness, drapability and elasticity of the amino-modified silicone softener have been significantly improved, and it has a darkening effect on some dyes, but it is easy to yellow

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
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  • Preparation method of comb-shaped organic silicon modified waterborne polyurethane, obtained polyurethane and application of comb-shaped organic silicon modified waterborne polyurethane
  • Preparation method of comb-shaped organic silicon modified waterborne polyurethane, obtained polyurethane and application of comb-shaped organic silicon modified waterborne polyurethane
  • Preparation method of comb-shaped organic silicon modified waterborne polyurethane, obtained polyurethane and application of comb-shaped organic silicon modified waterborne polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Put polyether diol N120 with a molecular weight of 1000, hydroxyl silicone oil with a molecular weight of 400, and 2,2-dimethylolpropionic acid in a vacuum drying oven and heat at 80°C for 11 h to remove the moisture in the reaction raw materials ; Use a vacuum tube type high-temperature sintering furnace to heat the 4A molecular sieve at 600 ° C for 6 h for activation, then put it in tetrahydrofuran to absorb water, and use it after one week of treatment.

[0028] (2) Use oil bath heating and mechanical stirring to build a reaction device. Add 0.8 mol of hydroxyl silicone oil 400 to a three-necked flask with a condenser tube, then add 2 mol of IPDI and 0.5 mol of tetrahydrofuran, and react at 70°C for 2 h. Hydroxyl silicone oil 400 was added dropwise using a constant pressure funnel at a rate of 2 drops / s.

[0029] (3) Then add 0.8 mol of 2,2-dimethylolpropionic acid as a chain extender, and at the same time add 2 drops of dibutyltin dilaurate as a catalyst, and us...

Embodiment 2

[0035] (1) Put polyether diol N120 with a molecular weight of 1000, hydroxyl silicone oil with a molecular weight of 400, and 2,2-dimethylolpropionic acid in a vacuum drying oven and heat at 85°C for 10 h to remove the moisture in the reaction raw materials ; Use a vacuum tube type high-temperature sintering furnace to heat the 4A molecular sieve at 650 ° C for 5 h for activation, then put it in tetrahydrofuran to absorb water, and use it after one week of treatment.

[0036] (2) Use oil bath heating and mechanical stirring to build a reaction device. Add 0.6 mol of hydroxyl silicone oil 400 to a three-necked flask with a condenser tube, then add 2 mol of IPDI and 0.6 mol of tetrahydrofuran, and react at 75°C for 3 h. Hydroxyl silicone oil 400 was added dropwise using a constant pressure funnel at a rate of 2 drops / s.

[0037] (3) Then add 1.6mol of 2,2-dimethylolpropionic acid as a chain extender, and at the same time add 3 drops of dibutyltin dilaurate as a catalyst, and use...

Embodiment 3

[0043] (1) Put polyether diol N120 with a molecular weight of 1000, hydroxyl silicone oil with a molecular weight of 1000 and 2,2-dimethylol propionic acid in a vacuum drying oven and heat at 85°C for 10 h to remove the moisture in the reaction raw materials ; Use a vacuum tube type high-temperature sintering furnace to heat the 4A molecular sieve at 600 ° C for 5 h for activation, then put it in tetrahydrofuran to absorb water, and use it after one week of treatment.

[0044] (2) Use oil bath heating and mechanical stirring to build a reaction device. Add 0.6 mol of hydroxyl silicone oil 400 to a three-necked flask with a condenser tube, then add 2 mol of IPDI and 0.5 mol of tetrahydrofuran, and react at 75°C for 3 h. Hydroxyl silicone oil 400 was added dropwise using a constant pressure funnel at a rate of 2 drops / s.

[0045] (3) Then add 0.8 mol of 2,2-dimethylolpropionic acid as a chain extender, and at the same time add 2 drops of dibutyltin dilaurate as a catalyst, and u...

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
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Abstract

The invention discloses a preparation method of comb-shaped organic silicon modified waterborne polyurethane, the obtained polyurethane and application thereof. The preparation method comprises the following steps: firstly, adding hydroxyl silicone oil and IPDI to react with tetrahydrofuran; then adding 2, 2-dimethylol acid and dibutyltin dilaurate, and cooling after reaction; then adding polyether glycol N120, and raising the temperature; then adding KH550 and glycidol, reducing the temperature of the system, adding tetrahydrofuran, stirring and neutralizing to form a salt; and finally, carrying out rotary evaporation and purification to obtain the comb-shaped organic silicon modified waterborne polyurethane, wherein through padding and sizing, the comb-shaped organic silicon modified waterborne polyurethane coating modified fabric can be further obtained. The prepared comb-shaped organic silicon modified waterborne polyurethane is used for softening finishing of fabrics. According to the invention, the preparation process is simple, the cost is low, the soft hand feeling of the fabric can be improved, the fabric has excellent friction resistance and durability, and the service life of a fabric product can be prolonged.

Description

technical field [0001] The invention belongs to a polymer material, in particular to a comb-shaped organosilicon-modified water-based polyurethane soft style finishing agent and its preparation method and application. Background technique [0002] With the continuous progress and development of the textile industry, people have higher and higher requirements for the performance of textiles. It not only meets the comfort, softness and fluffy feel required for daily wear, but also requires fabrics to have unique properties such as moisture absorption, breathability, and antistatic properties. And easy decontamination etc. However, the analysis of textile raw materials and the printing and dyeing process, the difference between synthetic fibers and natural fibers, and the damage to the original superior style and hand feel of textiles in the printing and dyeing process make various types of finishing auxiliaries necessary for printing and dyeing processing, especially for For ...

Claims

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Application Information

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IPC IPC(8): C08G18/10C08G18/66C08G18/61C08G18/48C08G18/34C08G18/38D06M15/568
CPCC08G18/10C08G18/6692C08G18/61C08G18/4009C08G18/3893D06M15/568D06M2200/50D06M2200/35C08G18/348C08G18/4825
Inventor 殷允杰叶挺张鹏飞疏义虎王潮霞陈坤林
Owner JIANGNAN UNIV
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