CN86100706A - Foamed compound material of solid alkali metal silicate - Google Patents
Foamed compound material of solid alkali metal silicate Download PDFInfo
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- CN86100706A CN86100706A CN 86100706 CN86100706A CN86100706A CN 86100706 A CN86100706 A CN 86100706A CN 86100706 CN86100706 CN 86100706 CN 86100706 A CN86100706 A CN 86100706A CN 86100706 A CN86100706 A CN 86100706A
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- alkaline silicate
- polyethers
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- Polyurethanes Or Polyureas (AREA)
Abstract
A kind of proportioning system of organic-inorganic composite foam material adopts solid alkaline silicate 20-35% (weight) to mix with polyethers 35-50% (weight), add catalyzer trolamine 1-3% (weight) organotin 0.5-2% (weight), whipping agent fluorine Lyons 10-15% (weight), suds-stabilizing agent silicone oil 2-5% (weight) stirs, mix with isocyanic ester again (proportioning is 1.1: 1-1.6: 1) foaming make.This material except that advantage with urethane, advantage such as it is little also to have water-absorbent, and thermal conductivity is low, and technology is simple, and is cheap.
Description
The invention belongs to macromolecular compound and form, specifically relate to the modification of urethane composition.
Composite foam material has caused people's very big attention in recent years as lagging material, and people regard efficient, the cheap lagging material of development as energy-conservation important measures.Urethane foam has low, the advantage of simple technology of thermal conductivity, but high temperature resistant, loss of properties on aging and involving great expense.A kind of novel foam materials is found out in people's attempt, makes it low, the advantage of simple technology of existing thermal conductivity, possesses high temperature resistant, ageing-resistant, cheap advantage simultaneously again.English Patent 1476799(1977) utilizes the liquid base metal silicate to mix back and isocyanate reaction with the organic compound of hydroxyl, form polyureas-poly-silicone foam plastics, have high strength, elasticity and thermostability by catalyzer, whipping agent effect.But this patent and later patent such as Japan special permission communique J5647145 etc. do not provide the proportioning of complete component, and these patent disadvantage are that also they select alkali metal silicate aqueous solution for use, because the existence that big water gaging arranged and isocyanic ester effect are by following reaction formula generation urea.
This polyureas be brittle, physical strength is low, ultimate compression strength is less than 1 kilograms per centimeter
2, can not engineering demands.Aspect the organic solvent of hydroxyl, organic constituent and alkalimetal silicate uniform mixing that this patent is mentioned 1-9 carbon atom can improve this situation, in fact most organism all should not adopt, having alcohols such as glycerol only can be miscible, foaming effect might as well, but can't resolve the shortcoming that water content is big, water-intake rate is high, and industry glycerol itself is moisture just reaches 10%, so water can reach 25-30% in the general material.The existence of these moisture had both influenced heat insulation effect also can cause lagging facility Fu Erosion, so though this lagging material is seen in patent, do not have industrial applicibility.
At above-mentioned shortcoming, the present invention will select that a kind of water content is few, thermal conductivity is little, physical strength is high and cost is low is suitable for the cellular insulant that engineering is used.
In order to achieve the above object, the present invention takes following measures:
1. in order to overcome the shortcoming that liquid phase alkalimetal silicate foam materials water-absorbent is big, water ratio is high, the present invention traces sth. to its source to due to the liquid soluble glass.Admittedly select solid alkali metal silicate for use.Ratio (the Me of this material alkalimetal oxide and silicon-dioxide
2O/SiO
2) high person, foam expansion is bigger, and unit weight is lower, and thermal conductivity is also low.Usually select Me for use
2O/SiO
2Can the fineness of＞0.33 alkalimetal silicate powder is related to matrix material fully react, and particle is thin more, unit weight is low more, thermal conductivity is also low.The Erbium-doped of alkaline silicate amount is directly connected to cost problem, and the Erbium-doped amount is many more, and cost is low more, but then influences material and conveying too much, puddles.On request in 20-35%(weight) between be advisable, best proportioning is 25%.
2. the present invention adopts the polyether material of different hydroxyl value combinations, and generally between 350-800, its content is 35-50%(weight), best proportioning is 42%, and the present invention economizes and desolvates, and polyethers has solvent action concurrently.
In view of former with glycerol as hydroxylic solvent is arranged, water-absorbent is bigger than normal, thermal conductivity higher (0.025-0.028 kilocalorie/rice, time, degree) the present invention gives up glycerine.
4. to select triethylamine for use be catalyzer to background technology, and smell is inapplicable too greatly.The present invention adopts alcamines to make catalyzer, and hydramine can quicken the reaction of isocyanic ester and active hydrogen compounds.Produce higher heat, make the whipping agent vaporization, and water content be few, uses 1-3%(weight) be advisable.
It is catalyzer that the present invention still adopts organotin, and freonll-11 is whipping agent, the silicone oil used as stabilizers.
In sum, A component prescription of the present invention is (by weight):
Solid alkaline silicate 20-35%
Hydroxyl value is at the polyethers 35-50% of 350-800
Hydramine (trolamine) 1-3%
Organotin (dibutyl tin laurate) 0.5-2%
Freon 10-15%
Silicone oil 2-5%
5. B component of the present invention is an isocyanic ester, and its NCO content is not less than 29%, and many from thermal conductivity and water-absorbent is favourable with isocyanic ester, but from intensity, how to make the foam embrittlement with isocyanic ester, the intensity reduction, and showing has unnecessary NCO not participate in reaction.The present invention selects commercially available many phenyl polymethine polyisocyanates and MR for use, CMDI, and three kinds of model B components, effect is just the same.
The present invention selects the A component for use: B component=1.1: 1-1.6: 1
Employing one embodiment of the present of invention are: be to make 200 kilograms of composite foam materials, at first sodium silicate solid is pulverized, fineness reaches 0.088, takes by weighing 30 kilograms, add 50 kilograms of the polyethers of hydroxyl value between 350-800,3 kilograms of trolamines, 2 kilograms of organotins (as dibutyl tin laurate), 5.0 kilograms of silicone oil suds-stabilizing agents, 15 kilograms of freonll-11, above-mentioned raw materials is mixed, and Stir mixes evenly, does the A component and places stand-by.
Take by weighing isocyanic ester (the present invention adopts many phenyl polymethine polyisocyanates) and do the B component for 95 kilograms.
With A, the B component is mixed and high speed Stir mixes, rotating speed is puddled evenly more more soon, react abundant more, thereby intensity is high more, and injection molding or coating then solidified immediately, in order to improve the rate of closed hole of foams, leaves standstill 5 minutes later solidifying.
If foamy body is had particular requirement, can add the silane coupling agent reinforced effects.
The composite foam material performance of utilizing prescription of the present invention to make is as follows:
Temperature tolerance is analyzed heat decomposition temperature and flash-point with differential thermal analysis, shows that the heat decomposition temperature of matrix material and flash-point all are higher than urethane.
By following table as seen, thermal distortion of the present invention is much smaller than urethane
The present invention's electronics pin check pore texture, pore is dead front type, is evenly distributed, and air vent wall is thin, and gross blow hole is 300 μ M
The present invention is used for being incubated at a concrete example of constructing, and the oil temperature is 50 ℃ in oil pipeline, and 14 ℃ of envrionment temperatures are during wind speed 0.2 meter per second
Be not incubated 32.2 ℃ of pitch anti-corrosion pipeline surface temperatures
190 kilocalories/meter of thermosteresis
2, the time
17.4 ℃ of urethane foam insulation pipe surface temperature
13.1 kilocalories/meter of thermosteresis
2, the time
16.9 ℃ of composite foam heat insulation material surface temperature of the present invention
12.3 kilocalories/meter of thermosteresis
2, the time
The present invention in the Puyang-the Gaotang pumping plant outlet section (φ 377) of Linyi long-distance transport pipes carried out actual insulation test, effect is better.
Composite foam material with the present invention's preparation is identical with polyurethane heat insulation material character, but this material temperature tolerance height, cost is low to be applicable to that insulation and the air hole structure of big thickness are good, so remarkable in economical benefits is convenient to promote.
Claims (6)
1, the composite foam material that generates of a kind of component of forming by alkaline silicate, polyethers, organotin, freonll-11 and silicone oil and isocyanate reaction, it is characterized in that said alkaline silicate is a solid alkaline silicate, and to add hydramine be catalyzer, and its proportioning is by weight percentage:
Solid alkaline silicate 20-35%
Polyethers 35-50%
Hydramine 1-3%
Organotin 0.5-2%
Fluorine Lyons 10-15%
Silicone oil 2-5%
Isocyanic ester and said ratio are 1.1: 1-1.6: 1.
2,, it is characterized in that the best proportioning of solid alkaline silicate and polyethers is 25% and 42% according to the said foam materials of claim 1.
3, according to claim 1,2 said foam materialss, the ratio that it is characterized in that alkalimetal oxide and silicon-dioxide in the solid alkaline silicate is greater than 0.33.
4,, it is characterized in that said polyethers hydroxyl value is between 350-800 according to claim 1,2 said foam materialss.
5,, it is characterized in that said catalyzer is an alcamine compound according to the said foam materials of claim 1.
6, according to claim 1,2 said foam materialss is characterized in that said isocyanic ester NCO content is not less than 29%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100706 CN86100706A (en) | 1986-01-27 | 1986-01-27 | Foamed compound material of solid alkali metal silicate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100706 CN86100706A (en) | 1986-01-27 | 1986-01-27 | Foamed compound material of solid alkali metal silicate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86100706A true CN86100706A (en) | 1987-01-31 |
Family
ID=4801166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86100706 Pending CN86100706A (en) | 1986-01-27 | 1986-01-27 | Foamed compound material of solid alkali metal silicate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86100706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103694672A (en) * | 2013-12-13 | 2014-04-02 | 山东一诺威新材料有限公司 | High-flame-retardance low-temperature bicomponent filling material for coal mines and preparation method thereof |
| CN104448774A (en) * | 2014-08-29 | 2015-03-25 | 煤炭科学技术研究院有限公司 | Homogeneous skinning-free organic-inorganic composite reinforcement material and preparation method thereof |
-
1986
- 1986-01-27 CN CN 86100706 patent/CN86100706A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103694672A (en) * | 2013-12-13 | 2014-04-02 | 山东一诺威新材料有限公司 | High-flame-retardance low-temperature bicomponent filling material for coal mines and preparation method thereof |
| CN104448774A (en) * | 2014-08-29 | 2015-03-25 | 煤炭科学技术研究院有限公司 | Homogeneous skinning-free organic-inorganic composite reinforcement material and preparation method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |