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Bi-component reaction-type flame-retardant waterborne polyurethane and preparation method thereof

A water-based polyurethane and reactive flame-retardant technology, which is applied in the field of two-component reactive flame-retardant water-based polyurethane and its preparation, can solve the problem of water resistance, solvent resistance, chemical resistance, abrasion resistance, and hardness that cannot reach the level of solvents. Improve the performance of type polyurethane and achieve the effect of improving cross-linking density and good water resistance

Active Publication Date: 2012-04-25
传化智联股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component water-based polyurethane is easy to construct, but it still cannot achieve the performance of solvent-based polyurethane in many properties such as water resistance, solvent resistance, chemical resistance, abrasion resistance, hardness, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The formula of component A is as follows:

[0023] raw material

Mass / g

Toluene diisocyanate

(TDI)

12.88

Organophosphorus polyols (hydroxyl value

170mgKOH / g)

19.43

Polyether polyol (PPG, hydroxyl

Value 109-115mgKOH / g)

60.00

Dimethylolpropionic acid (DMPA)

4.86

Triethylamine (TEA)

3.29

Stannous octoate (T9)

0.15

Deionized water

402

[0024] The preparation steps are as follows:

[0025] (1) Add PPG, TDI, DMPA and organophosphorus polyols in the N 2 Reaction under protection until NCO completely disappears (it can be detected by infrared spectroscopy), to obtain a prepolymer;

[0026] (2) be cooled to 40 ℃, adjust prepolymer viscosity with 30g methyl ethyl ketone;

[0027] (3) Dissolve TEA in 402g of deionized water, add it to the prepolymer, immediately carry out emulsification and neutralization in a high-speed emulsi...

Embodiment 2

[0031] The formula of component A is as follows:

[0032] raw material

Mass / g

Isophorone diisocyanate

(IPDI)

42.61

Halogenated polyols (hydroxyl value

428mgKOH / g)

54.48

Polyester polyol (PEA, hydroxyl

Value 105-115mgKOH / g)

60.00

Dimethylolpropionic acid (DMPA)

7.78

Triethylamine (TEA)

5.28

Stannous octoate (T9)

0.23

Deionized water

484

[0033] The preparation steps are as follows:

[0034] (1) Add PEA, IPDI, DMPA and halogen-containing polyols sequentially in a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer in N 2 Reaction under protection until NCO completely disappears (it can be detected by infrared spectroscopy), to obtain a prepolymer;

[0035] (2) be cooled to 40 ℃, regulate prepolymer viscosity with 40g methyl ethyl ketone;

[0036] (3) Dissolve TEA in 484g deionized water, add it t...

Embodiment 3

[0040] The formula of component A is as follows:

[0041] raw material

Mass / g

Diphenylmethane diisocyanate

(MDI)

32.32

Organophosphorus polyols (hydroxyl value

170mgKOH / g)

12.31

Polyether polyol (PPG, hydroxyl

Value 109-115mgKOH / g)

60

Halogenated polyols (hydroxyl value

428mgKOH / g)

12.31

Dimethylolpropionic acid (DMPA)

6.15

Triethylamine (TEA)

4.17

Dibutyltin dilaurate

(T12)

0.21

Deionized water

467

[0042] The preparation steps are as follows:

[0043] (1) Add PPG, TDI, DMPA, organophosphorus polyols and halogen-containing polyols sequentially in a four-necked flask equipped with a reflux condenser, and in N 2 Reaction under protection until NCO completely disappears (it can be detected by infrared spectroscopy), to obtain a prepolymer;

[0044] (2) be cooled to 40 ℃, regulate prepo...

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Abstract

The invention discloses bi-component reaction-type flame-retardant waterborne polyurethane and a preparation method thereof. Although the present single-component waterborne polyurethane has convenient construction, multiple performances of the present single-component waterborne polyurethane such as water resistance, solvent resistance, chemicals resistance, abrasion resistance, hardness and thelike cannot reach the requirement of the performance of the solvent-type polyurethane. The bi-component reaction-type flame-retardant waterborne polyurethane consists of a component A and a componentB, wherein the mass ratio of the components A and B is 5 to 15:1, the component A is obtained by dispersing prepolymer which is synthesized by non-flame-retardant polyalcohol, flame-retardant polyalcohol, diisocyanate, hydrophilic chain extender and catalyst into neutralizer water solution, and the component B is of hydrophilia polyisocyanates curing cross-linking agent. The polyisocyanates is used as the cross-linking agent for crosslink and curing, so the crosslink density of the waterborne polyurethane is greatly improved, and the performance of the water borne polyurethane can be equaled to that of the solvent polyurethane coat.

Description

technical field [0001] The invention relates to a two-component reactive flame-retardant waterborne polyurethane and a preparation method thereof. Background technique [0002] At present, the surface protection of wooden furniture, wooden structures, wooden floors and other wood products are mostly solvent-based paint coatings, and solvent-based paint coatings need to add a large amount of volatile organic solvents during production, construction and curing, causing pollution to the environment . In recent years, countries around the world have gradually paid attention to the hazards of volatile organic compounds (VOC) in organic waste gas. The regulations on VOC control have become increasingly stringent. Some developed countries in the West have clearly stipulated the types and amounts of organic compounds emitted. Water-based polyurethane uses water as the medium. Water is non-flammable, non-explosive, non-toxic, tasteless, will not pollute the environment, and has good...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/38C08G18/12
Inventor 王胜鹏罗运军陈鹤瞿少敏于德海
Owner 传化智联股份有限公司
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