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Preparation method of waterproof material

A waterproof coating and waterproof emulsion technology, which is applied in the field of packaging and decoration, can solve the problems of poor peelability, low coating film strength, and single protective performance, and achieve the effects of preventing pollution, high coating film strength, and improving appearance

Inactive Publication Date: 2017-06-27
彭忠芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing protective coatings still have the disadvantages of low film strength, poor peelability and single protective performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of waterproof coating comprises the following steps:

[0028] 1) Add isophorone diisocyanate, polypropylene glycol, polyethylene glycol, dibutyltin dilaurate and butanone to the first reaction kettle at room temperature, and then raise the temperature to 58~80°C to make them Mix and react in the reactor until the value of -NCO% in the system does not change, and obtain the primary product for subsequent use;

[0029] 2) Control the temperature at 80°C, add dimethylol propionic acid to the primary product obtained in step 1) and react for 220~260min, then lower the temperature to 38~43°C, add triethylamine to obtain the secondary product ; Add secondary products to the second reaction kettle filled with distilled water and disperse the secondary products in distilled water, then add diethylenetriamine aqueous solution to obtain aliphatic waterproof emulsion;

[0030] 3) Add propyltrimethoxysilane to the flask filled with ethanol, stir and mix at a...

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Abstract

The invention discloses a preparation method of a waterproof coating, which comprises the following steps: 1) adding isophorone diisocyanate and the like into a first reaction kettle at room temperature to obtain a primary product; 2) adding dimethylolpropane into the primary product acid, and then add triethylamine to prepare aliphatic waterproof emulsion; 3) prepare modified silica sol; 4) add aliphatic waterproof emulsion and modified silica sol to the third reaction kettle at room temperature to obtain a mixed emulsion; 5) Adding an appropriate amount of acrylic acid copolymer potassium salt and the like to the fourth reaction kettle filled with distilled water to obtain a mixed bottom liquid; 6) Adding a mixed emulsion to the mixed bottom liquid to obtain a waterproof coating. The paint prepared by the invention can effectively seal and protect the protected object, preventing the protected object from being polluted, corroded and damaged. At the same time, the coating also has the advantages of good peelability, high coating film strength, strong cohesion and high stability.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a preparation method of a waterproof coating. Background technique [0002] In order to prevent the materials or semi-products exposed to the atmosphere from being polluted, corroded and damaged, and prolong their service life, they are usually coated with good protective and peelable coatings on their surfaces for effective and temporary maintenance. Archive protection. In this way, it can not only isolate the invasion of outside air, salt spray, and microorganisms, and achieve waterproof effect; but also achieve the effect of cleaning and decontamination by absorbing pollutants. Compared with solvent-based protective coatings, protective coatings are safer and more environmentally friendly, so they are widely used in the field of product packaging and decoration. However, the existing protective coatings still have the disadvantages of low film strength, poor peelabili...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C08G18/32C08G18/34C08G18/48C08G18/75C08G18/66
CPCC09D175/08C08G18/3228C08G18/348C08G18/4825C08G18/4833C08G18/6692C08G18/755C08L2205/035C09D7/61C09D7/62C09D7/63C09D7/65
Inventor 彭忠芳
Owner 彭忠芳
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