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Full-water-based low-density soft polyurethane spraying composite polyether and preparation method thereof

A technology of soft polyurethane and combined polyether, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of low bonding strength between foam and wall, affecting the quality of engineering construction, and poor foam resilience, etc., to achieve The preparation method is simple and easy to operate, the effect of avoiding mold production and low foam density

Active Publication Date: 2013-02-27
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the full water spray coatings on the market have poor flame retardancy, low bonding strength between the foam and the wall, and poor resilience of the foam, which affect the construction quality of the project.

Method used

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  • Full-water-based low-density soft polyurethane spraying composite polyether and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) First put 60 parts of EP-330N, 10 parts of NT-403A and 30 parts of CF-6255 into the reactor;

[0041] (2) Add other raw materials of component A, physically mix and stir at room temperature for 1.5 hours, then fill in barrels, and complete the production of component A;

[0042] (3) According to the mass ratio of component A: polymethyl polyphenyl polyisocyanate or diphenylmethane diisocyanate (component B) of 100:100, add polymethyl polyphenyl polyisocyanate and pass through a high-pressure spraying machine Mix evenly, atomize and foam through a high-pressure foaming machine, and foam-form and mature for 24 hours to obtain the product.

[0043] Wherein: A component is the raw material of following mass ratio:

[0044] EP-330N: 60

[0045] NT-403A: 10

[0046] CF-6255: 30

[0047] EG: 3

[0048] B8870: 0.8

[0049] LK221: 1.2

[0050] Deionized water: 25

[0051] Catalyst A1:2

[0052] PT303: 1.7

[0053] PT304: 0.5

[0054] TCPP: 10

[0055] TEP: 10

...

Embodiment 2

[0060] (1) Put 40 parts of EP-330N, 20 parts of NT-403A and 30 parts of CF-6255 into the reaction kettle and stir;

[0061] (2) Add other raw materials of component A, physically mix and stir at room temperature for 1.5 hours, then fill in barrels, and complete the production of component A;

[0062](3) According to the mass ratio of component A: polymethyl polyphenyl polyisocyanate or diphenylmethane diisocyanate (component B) of 100:105, add polymethyl polyphenyl polyisocyanate and pass through a high-pressure spraying machine Mix evenly, spray and foam through a high-pressure foaming machine, foam molding and aging for 23 hours to obtain the product.

[0063] Wherein: A component is the raw material of following mass ratio:

[0064] EP-330N: 50

[0065] NT-403A: 20

[0066] CF-6255: 30

[0067] EG: 6

[0068] B8870: 1.0

[0069] LK221: 0.5

[0070] Deionized water: 22

[0071] Catalyst A1: 3.5

[0072] PT303: 2.5

[0073] PT306: 4.0

[0074] TCPP: 3.5

[0075] T...

Embodiment 3

[0078] (1) Put 50 parts of EP-330N, 20 parts of NT-403A and 5 parts of CF-6255 into the reaction kettle and stir;

[0079] (2) Add the other raw materials of component A, physically mix and stir at room temperature for 1.2 hours, fill in barrels, and complete the production of component A;

[0080] (3) According to the mass ratio of component A: polymethyl polyphenyl polyisocyanate or diphenylmethane diisocyanate (component B) of 100:102, add diphenylmethane diisocyanate and mix evenly through a high-pressure sprayer , after atomization and foaming by high-pressure foaming machine, foam molding and aging for 24 hours, the product is obtained.

[0081] Wherein: A component is the raw material of following mass ratio:

[0082] EP-330N: 60

[0083] NT-403A: 20

[0084] CF-6255: 20

[0085] DEG: 9

[0086] B8870: 0.1

[0087] LK221: 0.1

[0088] Deionized water: 10

[0089] Catalyst A1:5

[0090] PT303: 5.5

[0091] PT304: 5.5

[0092] TCPP: 25

[0093] TEP: 25

[009...

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Abstract

The invention belongs to the field of chemical synthesis, and particularly relates to a full-water-based low-density soft polyurethane spraying composite polyether and a preparation method thereof. The composite polyether is composed of a component A and a component B in a weight ratio of 100:(100-105), wherein the component A is composed of polyether glycol A, polyether glycol B, polyester polyol, a crosslinking agent, a surfactant, a foaming agent, a catalyst, a flame retardant and an emulsifier; and the component B is polymethyl polyphenyl polyisocyanate or diphenylmethane diisocyanate. The preparation method comprises the following steps: adding the polyether glycol A, polyether glycol B and polyester polyol into a reaction kettle; adding the other raw materials in the component A, mixing, and barrelling to complete the production of the component A; and adding the component B, evenly mixing, atomizing, foaming, and forming and aging the foam to obtain the product. By using water as the foaming agent, the composite polyether provided by the invention achieves the goals of thermal insulation and heat preservation, and achieves the international standards in the aspects of elasticity, flame retardancy and sound insulation effect.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to an all-water-based low-density flexible polyurethane spray-coating composite polyether and a preparation method thereof. Background technique [0002] With the further implementation of building energy-saving standards, polyurethane spray-type combined polyether is widely used in wall insulation and building peripheral insulation projects. At present, polyurethane spraying generally uses 141B foaming system, which has high foam density. During the construction process, it will have a certain impact on the load bearing of the building, and during the entire foaming process, HCFC-141B will be partially released into the atmosphere, causing the destruction of the ozone layer in the atmosphere. In order to protect our earth, all countries have Joining the development and replacement of new foaming machines, with the gradual replacement of HCFC-141B foaming agent in my coun...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/42C08K5/521C08K5/5333C08K3/32C08K5/3492C09D175/08C08G101/00
Inventor 李明友徐业峰李欣宁晓龙马海晶
Owner SHANDONG INOV NEW MATERIALS CO LTD
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