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Preparation method of waterborne polyurethane fire-retardant coating

A technology for water-based polyurethane and fire-retardant coatings, applied in the field of coatings, can solve problems such as reducing the performance of coatings, and achieve the effects of good thermal stability, significant flame retardant effect, and good emulsion stability.

Inactive Publication Date: 2017-12-22
嘉兴御创电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of water-based polyurethane fire retardant coating, to solve the technical problem that the flame retardant used in the existing water-based polyurethane fire retardant coating will reduce the performance of the coating

Method used

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Embodiment Construction

[0010] Specific embodiments of the present invention will be described in detail below.

[0011] A kind of preparation method of waterborne polyurethane fireproof coating, a kind of preparation method of waterborne polyurethane fireproof coating comprises the following steps:

[0012] 1) Calculated in parts by mass, mix 100-150 parts of water-based polyurethane emulsion, 3-5 parts of 2,2,4-trimethyl-1, 3-5 parts of 3-pentanediol monoisobutyrate and 1 ~ Mix 2 parts of defoamer and stir for about 5 minutes to make water-based polyurethane emulsion;

[0013] 2) Mix the water-based polyurethane emulsion and silica sol made in step 1) with a mass ratio of 3:1, stir for 30 minutes, and then ultrasonically disperse for 30 minutes in an ultrasonic instrument to make a silica sol-modified water-based polyurethane coating;

[0014] 3) Blend the silica sol modified water-based polyurethane coating prepared in step 2), MCA flame retardant, and water-based anti-settling agent at 50:5:1, s...

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Abstract

The invention discloses a preparation method of a waterborne polyurethane fire-retardant coating. The preparation method comprises the following steps: 1) mixing 100-150 parts of an waterborne polyurethane emulsion, 3-5 parts of 2,2,4-trimethyl-1, 3-5 parts of 3-pentanediol isobutyrate and 1-2 parts of a defoaming agent in parts by mass, and stirring for about 5 min to prepare the waterborne polyurethane emulsion; 2) mixing the waterborne polyurethane emulsion prepared in step 1) with silica sol at a mass ratio of 3:1, stirring for 30 min, and then carrying out ultrasonic dispersion in an ultrasonic instrument for 30 min to prepare a silica sol modified waterborne polyurethane coating; and 3) blending the silica sol modified waterborne polyurethane coating prepared in step 2), an MCA flame retardant and a waterborne anti-settling agent at a ratio of 50:5:1, stirring for 5 h, and then transferring the mixture into a ball mill for ball-milling dispersion to obtain the waterborne polyurethane fire-retardant coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a preparation method of water-based polyurethane fireproof coatings. Background technique [0002] Water-based polyurethane coatings have been widely used in the coating of various industrial products due to their advantages of environmental protection, non-toxicity, and good mechanical properties. However, polyurethane coatings are easy to burn and drip after curing, and cannot be used as decorative fireproof coatings and cable fireproof coatings. , Steel structure fireproof coatings, etc., need to be flame retardant modified. [0003] Environmentally friendly water-based polyurethane fire retardant coatings are prepared by dispersing halogen-free flame retardant powder in the coating. The flame retardant systems currently used mainly include hydroxide and intumescent flame retardant systems. The former has low flame retardant efficiency and requires a high dosage , which affe...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/18C09D7/12
CPCC08K3/36C08K5/103C08K5/34928C08K13/02C09D5/18C09D175/04
Inventor 不公告发明人
Owner 嘉兴御创电力科技有限公司