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Monocomponent foaming agent and preparation method thereof

A foaming agent, single-component technology, applied in the field of single-component foaming agent and its preparation, can solve the problems of foaming agent flammable and explosive, easy to produce toxic gas, uneven quality, etc., to achieve low cost, The effect of safe and convenient use and small amount of residue

Inactive Publication Date: 2013-08-14
天津鼎鑫防火材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of blowing agents on the market, and the quality is uneven, especially the low boiling point raw materials used make the blowing agent flammable and explosive, and easy to produce toxic gases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A single-component foaming agent, made from the following raw materials in parts by weight: 20 parts of isocyanate, 25 parts of polyester polyol, 3 parts of polyether polyol, 30 parts of methylene chloride, 0.5 part of catalyst , 3 parts of fireproof and high temperature resistant filler.

[0017] The catalyst is ammonium polyphosphate.

[0018] The fireproof and high temperature resistant filler is titanium dioxide.

[0019] Described a kind of one-component whipping agent, its preparation method is as follows:

[0020] a. Add polyether polyol to the container, and dehydrate under vacuum for 1-3 hours;

[0021] b. Add polyester polyol, isocyanate and catalyst successively to the container of step a, stir evenly for 20 minutes, and the stirring speed is 50r / min to obtain mixture A;

[0022] c. Add a fireproof and high temperature resistant filler to the mixture A prepared in step b, and stir at a high speed, the stirring speed is 1000r / min, and the stirring time is 5...

Embodiment 2

[0025] A single-component foaming agent, made from the following raw materials in parts by weight: 30 parts of isocyanate, 30 parts of polyester polyol, 8 parts of polyether polyol, 40 parts of methylene chloride, and 2 parts of catalyst , 5 parts of fireproof and high temperature resistant filler.

[0026] The catalyst is polyamide.

[0027] The fireproof and high temperature resistant filler is aluminum hydroxide.

[0028] Described a kind of one-component whipping agent, its preparation method is as follows:

[0029] a, add polyether polyol in the container, and dehydrate under vacuum environment for 3 hours;

[0030] b. Add polyester polyol, isocyanate and catalyst successively to the container of step a, stir evenly for 35 minutes, and the stirring speed is 150r / min to obtain mixture A;

[0031] c. Add a fire-proof and high-temperature resistant filler to the mixture A prepared in step b, and perform high-speed stirring with a stirring speed of 2500r / min and a stirring...

Embodiment 3

[0034] A single-component foaming agent, made from the following raw materials in parts by weight: 25 parts of isocyanate, 28 parts of polyester polyol, 5 parts of polyether polyol, 35 parts of methylene chloride, and 1 part of catalyst , 4 parts of fireproof and high temperature resistant filler.

[0035] The catalyst is ammonium polyphosphate.

[0036] The fireproof and high temperature resistant filler is white carbon black.

[0037] Described a kind of one-component whipping agent, its preparation method is as follows:

[0038] a, add polyether polyol in the container, and dehydrate under vacuum environment for 2 hours;

[0039] b. Add polyester polyol, isocyanate and catalyst successively to the container of step a, stir evenly for 28 minutes, and the stirring speed is 100r / min to obtain mixture A;

[0040] c. Add a fire-proof and high-temperature-resistant filler to the mixture A prepared in step b, and perform high-speed stirring with a stirring speed of 1750r / min an...

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PUM

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Abstract

The invention provides a monocomponent foaming agent and a preparation method thereof. The monocomponent foaming agent is prepared from the following raw materials in parts by weight: 20 to 30 parts of isocyano polyacid ester, 25 to 30 parts of polyester polyol, 3 to 8 parts of polyether polyol, 30 to 40 parts of methylene dichloride, 0.5 to 2 parts of catalyst and 3 to 5 parts of fireproof and high-temperature resistant filling agent. The preparation method comprises the following steps: adding the polyether polyol into a vessel and dehydrating in the vacuum environment; sequentially adding polyester polyol, isocyano polyacid ester and the catalyst and stirring evenly; adding the fireproof and high-temperature resistant filling agent and stirring at a high speed; adding methylene dichloride; and then standing for 24 hours, thereby obtaining the monocomponent foaming agent. The monocomponent foaming agent has the beneficial effects of overcoming the flammable and explosive defects of the traditional foaming agent and being safer and more convenient to store and use. The monocomponent foaming agent has the characteristics of being large in gas generation volume, small in residue volume, high in reaction speed and uniform in gas generation. In addition, the monocomponent foaming agent is simple in production process, low in cost, safe and environmental-friendly and cannot generate toxic gas.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a high-temperature-resistant single-component foaming agent required for fire protection and a preparation method thereof. Background technique [0002] The so-called foaming agent is the substance that makes the target substance form holes, and it can be divided into three categories: chemical foaming agent, physical foaming agent and surfactant. The physical blowing agent is that the foam pores are formed by the change of the physical form of a certain substance, that is, the expansion of compressed gas, the volatilization of liquid or the dissolution of solid. The foaming agent has high surface activity, which can effectively reduce the surface tension of the liquid, and arrange the double electron layer on the surface of the liquid film to surround the air, forming bubbles, and then forming a foam from a single bubble. [0003] Commonly used physical blowing agents are low-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/16C08K3/22C08K3/36
Inventor 赵立鹏
Owner 天津鼎鑫防火材料科技有限公司
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