CN103058540A - Expanded perlite with catalytic cross-link effect and preparation method of expanded perlite - Google Patents
Expanded perlite with catalytic cross-link effect and preparation method of expanded perlite Download PDFInfo
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- CN103058540A CN103058540A CN2013100265169A CN201310026516A CN103058540A CN 103058540 A CN103058540 A CN 103058540A CN 2013100265169 A CN2013100265169 A CN 2013100265169A CN 201310026516 A CN201310026516 A CN 201310026516A CN 103058540 A CN103058540 A CN 103058540A
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- pearlstone
- bronsted acid
- expanded perlite
- phenolic resin
- perlite
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Abstract
The invention discloses an expanded perlite with a catalytic cross-link effect and a preparation method of the expanded perlite. The expanded perlite with the catalytic cross-link effect consists of the expanded perlite and bronsted acid. The preparation method comprises the following specific step of adding the bronsted acid on the expanded perlite so that the surface of the expanded perlite has acidic groups which can provide protons in a solution, thereby catalyzing phenolic resin cross-linking, reducing reaction activation energy of the phenolic resin, improving activities of active groups, and catalyzing the crosslinking of the the phenolic resin, and meanwhile, the bronsted acid has an effect of crossinking with phenolic resin, and the Bronsted acid and the phenolic resin are subjected to crosslinking under the acid catalytic action, so that the degree of crosslinking of the phenolic resin is increased, and a space reticular structure which takes perlite as a center and is diffused to the space is formed. The modified expanded perlite has the advantages of light weight, high activation, high surface acidity, obvious catalytic effect and the like.
Description
Technical field
The present invention relates to the energy-saving heat preserving field, relate in particular to a kind of pearlstone with catalytic crosslinking effect and preparation method thereof.
Background technology
Continuous enhancing along with people's environmental consciousness, people propose higher requirement to building energy conservation, the key of building energy conservation is lagging material, and phenolic resin foam is one of important lagging material, and it is low that it has density, quality is light, the advantages such as thermal conductivity is low, and is cheap, but its intensity is low, fragility is large, is squeezed, collides easy fragmentation; Foaming technique is the key that determines the phenolic resin foam performance, and foaming technique is good, and resol is crosslinked more abundant, and intensity is higher; Rate of closed hole is large, and water-intake rate is low, and thermal conductivity is low, and heat-insulating property is better, otherwise phenolic resin foam intensity is low, and water-intake rate is high.
Summary of the invention
For above shortcomings in the prior art, the invention provides the surface and contain acidic-group, in solution, can dissociate the foaming of proton catalysed phenolic resin, can crosslinked a kind of pearlstone with catalytic crosslinking effect occur with resol again simultaneously.
Simultaneously, the present invention also provides a kind of preparation method with pearlstone of catalytic crosslinking effect.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of pearlstone with catalytic crosslinking effect has the pearlstone of bronsted acid in the surface bonding of this pearlstone.
Further, described bronsted acid be a kind of with can with the bronsted acid of resol generation crosslinked group.
Further, described bronsted acid is a kind ofly can provide the proton catalysed phenolic resin crosslinked bronsted acid.
Further, the weight of described bronsted acid is 1.5%～20% of this pearlstone weight.
Correspondingly, a kind of preparation method with pearlstone of catalytic crosslinking effect provided by the invention, add the ratio of the bronsted acid of 15～200 grams according to every kilogram of pearlstone, first bronsted acid is dissolved in and forms mixing solutions in the solvent, mixing solutions evenly is sprinkled upon on the pearlstone, the limit is stirred the pearlstone limit and is added mixing solutions, stirs one hour again, take out oven dry, can prepare the pearlstone that surface bonding has bronsted acid.
Correspondingly, a kind of preparation method with pearlstone of catalytic crosslinking effect that the present invention also provides, add the ratio of the bronsted acid of 15～200 grams according to every kilogram of pearlstone, first bronsted acid is dissolved in and forms mixing solutions in the solvent, again mixing solutions is mixed with perlite, be placed on ultrasonic half an hour in the ultrasonic clean device; Take out at last oven dry, can prepare the modified expanded perlite that acidic-group is contained on the surface.
Compared with prior art, a kind of pearlstone with catalytic crosslinking effect of the present invention and preparation method thereof has following advantage:
1, take above processing after, be bonded with bronsted acid on the pearlstone, in phenol resin solution, dissociate hydrogen ion, catalysed phenolic resin generation crosslinking reaction.
2, be adhered to the bronsted acid on pearlstone surface, self contain the active group that can follow resol generation crosslinking reaction, under hydrionic katalysis, crosslinked with resol.
3, add pearlstone after the surface treatment in resol, so that resol forms a kind of structure take perlite as crosslinked center on the perlite surface when crosslinked, so that Foaming of phenolic resin is more even, intensity is higher.
4, the perlite after the interpolation surface modification, hydrogen ion that its surface discharges can replace inorganic acid, therefore can reduce the consumption of inorganic acid, reduces the corrosion to mould, the life-span of raising mould.
Description of drawings
Fig. 1 is the modified pearl rock after the bonding bronsted acid;
Fig. 2 is the crosslinked schematic diagram of resol when not adding perlite;
Fig. 3 is for adding surface modification perlite and the resol generation schematic diagram after crosslinked.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
A kind of pearlstone with catalytic crosslinking effect has the pearlstone of bronsted acid in the surface bonding of this pearlstone, the weight of bronsted acid is 1.5%～20% of this pearlstone weight.Bronsted acid be a kind of with can with the bronsted acid of resol generation crosslinked group.Bronsted acid also is a kind ofly can provide the proton catalysed phenolic resin crosslinked bronsted acid.
A kind of preparation method with pearlstone of catalytic crosslinking effect, add the ratio of the bronsted acid of 15～200 grams according to every kilogram of pearlstone, first bronsted acid is dissolved in and forms mixing solutions in the solvent, evenly be sprinkled upon mixing solutions on the pearlstone again, the limit is stirred the pearlstone limit and is added mixing solutions, stirred one hour, and took out at last oven dry, can prepare the pearlstone that surface bonding has bronsted acid.
Another kind has the preparation method of the pearlstone of catalytic crosslinking effect, add the ratio of the bronsted acid of 15～200 grams according to every kilogram of pearlstone, first bronsted acid is dissolved in and forms mixing solutions in the solvent, again mixing solutions is mixed with perlite, be placed on ultrasonic half an hour in the ultrasonic clean device; Take out at last oven dry, can prepare the modified expanded perlite that acidic-group is contained on the surface.
Embodiment 1
When the bronsted acid of interpolation modification was vinylformic acid, concrete preparation method was as follows:
The vinylformic acid that takes by weighing 100g is dissolved in the alcohol of 300ml and forms mixing solutions, mixing solutions evenly is sprinkled upon on the pearlstone surface of 1000g again, adds while stirring acrylic acid solution, stirred one hour, 70 ℃ ~ 80 ℃ oven dry can be prepared the surface and be contained acrylic acid pearlstone.
Embodiment 2
When the bronsted acid that add to be used for surface modification was oxalic acid, concrete preparation method was as follows:
Take by weighing the oxalic acid of 150g, be dissolved in the alcohol of 600ml and form mixing solutions, mixing solutions is poured in the perlite of 800g, be placed on ultrasonic half hour in the ultrasonic clean device, take out rear 70 ℃ ~ 80 ℃ oven dry, can prepare the perlite that acidic-group is contained on the surface.
Embodiment 3
When the bronsted acid that add to be used for surface modification was stearic acid, concrete preparation method was as follows:
Take by weighing the 200g stearic acid, be dissolved in the tetracol phenixin of 500ml, while stirring stearic acid solution evenly is sprinkled upon on the 1000g perlite, stirred one hour, put baking oven 50 ℃ of oven dry in the inside into again, can preparing just, face is bonded with stearic pearlstone.
Embodiment four
When the bronsted acid that add to be used for surface modification was methacrylic acid, concrete preparation method was as follows:
Take by weighing the methacrylic acid of 200～400g, be dissolved in the 500ml water, solution is poured in the perlite of 1000g, be placed on ultrasonic half an hour in the ultrasonic clean device, take out, be placed on 70 ℃～80 ℃ oven dry in the baking oven, can prepare the perlite that surface bonding has acidic-group.
Embodiment five
When the bronsted acid that add to be used for surface modification was lactic acid, concrete preparation method was as follows:
Take by weighing the lactic acid of 100g, be dissolved in 300ml water wiring solution-forming, take by weighing again the perlite of 500g, add while stirring the solution for preparing, evenly be sprinkled upon on the pearlstone, stirred one hour, be placed on 70 ℃～80 ℃ oven dry in the baking oven, can prepare the pearlstone that surface bonding has lactic acid.
The perlite of modification is added in the phenol resin solution according to 1%～15% of resol weight, in solution, the acidic-group on perlite surface dissociates hydrogen ion, the catalysed phenolic resin crosslinking curing, the active group in the simultaneously bronsted acid and resol occur crosslinked, form take modified expanded perlite as crosslinked center, the reticulated structure that distributes to the space, so that the resol degree of crosslinking is higher, toughness is better, and intensity is higher.
Fig. 1 is the modified pearl rock after the bonding bronsted acid; Fig. 2 is the crosslinked schematic diagram of resol when not adding perlite; Fig. 3 is for adding surface modification perlite and the resol generation schematic diagram after crosslinked, and among the figure, ball is the perlite after the surface modification, and curve is resol.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the pearlstone with catalytic crosslinking effect is characterized in that: the pearlstone that bronsted acid is arranged in the surface bonding of this pearlstone.
2. a kind of pearlstone with catalytic crosslinking effect according to claim 1 is characterized in that: described bronsted acid be a kind of with can with the bronsted acid of resol generation crosslinked group.
3. a kind of pearlstone with catalytic crosslinking effect according to claim 1 is characterized in that: described bronsted acid is a kind ofly can provide the proton catalysed phenolic resin crosslinked bronsted acid.
4. a kind of pearlstone with catalytic crosslinking effect according to claim 1 is characterized in that: the weight of described bronsted acid is 1.5%～20% of this pearlstone weight.
5. preparation method with pearlstone of catalytic crosslinking effect, it is characterized in that: the ratio of adding the bronsted acid of 15～200 grams according to every kilogram of pearlstone, first bronsted acid is dissolved in and forms mixing solutions in the solvent, evenly be sprinkled upon mixing solutions on the pearlstone again, the limit is stirred the pearlstone limit and is added mixing solutions, stirred one hour, and took out at last oven dry, can prepare the pearlstone that surface bonding has bronsted acid.
6. preparation method with pearlstone of catalytic crosslinking effect, it is characterized in that: the ratio of adding the bronsted acid of 15～200 grams according to every kilogram of pearlstone, first bronsted acid is dissolved in and forms mixing solutions in the solvent, again mixing solutions is mixed with perlite, be placed on ultrasonic half an hour in the ultrasonic clean device; Take out at last oven dry, can prepare the modified expanded perlite that acidic-group is contained on the surface.
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| CN2013100265169A CN103058540A (en) | 2013-01-24 | 2013-01-24 | Expanded perlite with catalytic cross-link effect and preparation method of expanded perlite |
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| CN2013100265169A CN103058540A (en) | 2013-01-24 | 2013-01-24 | Expanded perlite with catalytic cross-link effect and preparation method of expanded perlite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083684A (en) * | 2017-12-28 | 2018-05-29 | 安徽宏实光机电高科有限公司 | A kind of preparation method that automobile exhaust purifier pad is made using expanded perlite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827583A (en) * | 2012-08-03 | 2012-12-19 | 上海英硕聚合材料股份有限公司 | Phase change composite material and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827583A (en) * | 2012-08-03 | 2012-12-19 | 上海英硕聚合材料股份有限公司 | Phase change composite material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083684A (en) * | 2017-12-28 | 2018-05-29 | 安徽宏实光机电高科有限公司 | A kind of preparation method that automobile exhaust purifier pad is made using expanded perlite |
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Application publication date: 20130424 |