CN107501858A - A kind of preparation method of obdurability melamine foam material - Google Patents
A kind of preparation method of obdurability melamine foam material Download PDFInfo
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- CN107501858A CN107501858A CN201710933722.6A CN201710933722A CN107501858A CN 107501858 A CN107501858 A CN 107501858A CN 201710933722 A CN201710933722 A CN 201710933722A CN 107501858 A CN107501858 A CN 107501858A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/32—Modified amine-aldehyde condensates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The present invention relates to a kind of preparation method of obdurability melamine foam material, belong to materials processing technology field.Citric acid and deionized water are stirred by the present invention, obtain citric acid solution, ripe sponge gourd is taken again, and cutting and grinding obtain luffa fragment, weigh deionized water, citric acid solution etc. and put in beaker, it is stirred to obtain coating modification coagulant liquid, luffa fragment is dipped in coating modification coagulant liquid, after immersion, filters to obtain filter cake and vacuum freeze drying, ball milling sieves, and obtains modified loofah sponge particle；Weigh formalin, melamine, polyvinyl alcohol etc. to put in flask, after heating water bath, then ice-water bath is cooled to room temperature, is prepared into modified cyanurotriamide resin；Weigh modified cyanurotriamide resin, modified loofah sponge particle, pentane, oxalic acid solution, Tween 80 to be stirred and be poured into mould, sealed mold, after thermal insulation foaming, cooling, heat preservation solidification, it is cooled to room temperature, you can be prepared into a kind of obdurability melamine foam material.
Description
Technical field
The present invention relates to a kind of preparation method of obdurability melamine foam material, belong to materials processing technology field.
Background technology
Melamine foam, melamine foam is commonly called as, is a kind of Intrinsical flame-retardant foam material that new development in recent years is got up
Material.Due to including stable triazine ring structure in macromolecular, the high temperature heat-resistant stability of melamine foam is good, can be in 150 DEG C of ring
It is long-term use of at a temperature of border.Foam is only contacted and just burnt under fire conditions simultaneously, and nitrogen element content in melamine
Height, combustion product is substantially non-toxic, and pyrolytic release nitrogen can completely cut off air and hinder to burn, therefore melamine foamed plastic
Good flame resistance, in addition, melamine foamed plastic has excellent absorbing sound and lowering noise.Cheap plus abundant raw material cost, health is nontoxic,
Machinability is good, iing is required that the building of light, fire-retardant, heat-insulated class, traffic, aviation field have broad application prospects.
Melamine foamed plastic mainly has two kinds of foaming structures of perforate and closed pore at present.The melamine of presently relevant literature research
Amine foam is mostly open-celled foam, the space development model that single cell space is made up of " prism ", forms three-dimensional netted perforate knot
Structure.The foam structure of closed pore melamine foamed plastic is made up of bubble rib and steep that wall two parts, and the heat preservation and insulation of foam protrudes, can
To replace the foams such as phenolic aldehyde easy to aging, temperature tolerance is poor, polyolefin.But obturator-type melamine foamed plastic product external at present
Expensive, the country is also in conceptual phase.
The preparation process of melamine foam is generally divided into two stages：Production of melamine resin first；Then in resin
Blowing promotor is added, by being molded the means such as heating or microwave heating, final obtained foam finished product.
Melamine foamed plastic has light flame-retardant, a high temperature resistant, the performance such as ageing-resistant, and cost is cheap, and chemical stability is good,
Health is nontoxic, and machine-shaping is good, has preferable application prospect in many fields.Application mainly lightweight in construction material
Heat insulating board, composite insulation wall etc.；Application in communications and transportation, space industry mainly in automobile, magnetic suspension train, fly
The sound insulation of machine, sound-absorbing, heat-insulated aspect；Except high temperature resistant, noise reduction aspect in melamine foamed plastic commercial Application, research foam is in work
Application in terms of industry absorption is significant, especially for the absorption under the adverse circumstances such as high temperature, chemical attack；Study trimerization
Cyanamide foamed material, can be by its application message military affairs industry to the specific function such as suction ripple of shielding electromagnetic waves, radio wave
In；At daily aspect, cleaning supplies are used it for well using melamine foamed plastic frictional property, polyurethane is replaced using its thermal insulation
Deng for such as thermal insulation layer, the insulation of pipeline etc. of water heater, refrigerator in household electrical appliance.
Melamine foamed plastic excellent performance, cost are cheap, and added value is high, while can be combined with the textile material of lightweight,
Multi-functional composite material for weaving is prepared, application prospect is preferable.But the research to melamine foamed plastic at present is mainly steeped
In terms of the preparation of foam, modified enhancing, the research to its sound absorption qualities is less, and is concentrated mainly on tridimensional network foam.So
And structure is an important factor for influenceing foam sound absorbing capabilities, in order to optimize the sound absorption qualities of foam, trimerization under different structure is studied
Cyanamide foam sound absorption characteristics and rule, it is more efficiently applied in sqouynd absorption lowering noise, asked solving noise pollution in environment
Inscribe significant.
The content of the invention
The technical problems to be solved by the invention：Larger for hard melamine foamed plastic fragility, intensity is relatively low, limits
Using the problem of, there is provided a kind of preparation method of obdurability melamine foam material.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）In mass ratio 1：10, citric acid and deionized water are stirred, citric acid solution is obtained, counts in parts by weight, respectively
Weigh 45~50 parts of deionized waters, 10~15 parts of citric acid solutions, 3~5 parts of polyvinyl alcohol and 2~3 parts of peach gum powder and be placed in burning
In cup, coating modification coagulant liquid is stirred to obtain；
（2）In mass ratio 1：25, it is 1cm by size3Luffa fragment is dipped in coating modification coagulant liquid, after immersion, filtering
Filter cake and vacuum freeze drying are obtained, ball milling sieving, obtains modified loofah sponge particle；
（3）Count in parts by weight, respectively weigh 45~50 parts of formalins, 60~65 parts of melamines, 1~2 part of polyvinyl alcohol,
2~3 parts of trihydroxyethyl isocyanuric esters and 10~15 parts of citric acids, after heating water bath, room temperature is cooled to, is prepared into modified trimerization
Melamine resin；
（4）Count in parts by weight, weigh 45~50 parts of modified cyanurotriamide resins, 10~15 parts of modified loofah sponge particles, 3 respectively
~5 parts of pentanes, 6~8 parts of oxalic acid solutions, 3~5 parts of Tween-80s are placed in mixer, are stirred and are poured into mould,
Sealed mold simultaneously after 2~3h of thermal insulation foaming, stands and cooled down, and after heat preservation solidification, standing is cooled to room temperature, you can is prepared into one kind by force
Toughness melamine foam material.
Step（3）Described cooling is that ice-water bath cooling is handled at 0~5 DEG C.
Step（4）Described thermal insulation foaming temperature is 100~120 DEG C.
Step（4）Described heat preservation solidification temperature is 55~70 DEG C.
Compared with other method, advantageous effects are the present invention：
（1）The present invention is filling main body framework by luffa, the multi-pore structure having by luffa, is added and had
Effect improves the toughness of foamed material, strengthens its abscess deformability, when by compression stress, power effectively can be distributed into foam
It is interior, so as to which effectively enhancing improves foam compression intensity；
（2）The present invention is filled to inside loofah fiber and participating in cyanurotriamide modified by citric acid, is participated in by citric acid
Condensation reaction between methylol and melamine, incorporate into the three-dimensional network of resin, add between two rigid radicals
Distance, the pliability of resin macromolecular is improved, improve foam framework toughness, load performance is obvious when it is by external force pressure
Improve, be effectively improved the ductile strength of material.
Embodiment
In mass ratio 1：10, citric acid and deionized water are stirred, obtain citric acid solution, then ripe sponge gourd is taken, from
After so air-drying, removed the peel and clean drying, seed obtains luffa in removal, and cutting and grinding to size are 1cm3Luffa it is broken
Block, count in parts by weight, weigh 45~50 parts of deionized waters, 10~15 parts of citric acid solutions, 3~5 parts of polyvinyl alcohol and 2 respectively
~3 parts of peach gum powder are placed in beaker, are stirred to obtain coating modification coagulant liquid, in mass ratio 1：25, luffa fragment is soaked
Bubble is into coating modification coagulant liquid, after soaking 3~5h, filters to obtain filter cake and vacuum freeze drying, ball milling crosses 80 mesh sieves, obtains modification
Luffa particle；Count in parts by weight, weigh 45~50 parts of formalins of mass fraction 40%, 60~65 parts of melamines respectively
Amine, 1~2 part of polyvinyl alcohol, 2~3 parts of trihydroxyethyl isocyanuric esters and 10~15 parts of citric acids are placed in three-necked flask, 55
At~65 DEG C after 1~2h of heating water bath, then ice-water bath is cooled to room temperature at 0~5 DEG C, is prepared into modified cyanurotriamide resin；
Count in parts by weight, respectively weigh 45~50 parts of modified cyanurotriamide resins, 10~15 parts of modified loofah sponge particles, 3~5 parts just
Pentane, 6~8 parts of oxalic acid solutions of mass fraction 5%, 3~5 parts of Tween-80s are placed in mixer, are stirred and are poured into mould
In, sealed mold is placed in 100~120 DEG C of baking ovens, and after 2~3h of thermal insulation foaming, standing is cooled to 55~70 DEG C, heat preservation solidification
After 2~3h, standing is cooled to room temperature, you can is prepared into a kind of obdurability melamine foam material.
Example 1
In mass ratio 1：10, citric acid and deionized water are stirred, obtain citric acid solution, then takes ripe sponge gourd, natural wind
After dry, removed the peel and clean drying, seed obtains luffa in removal, and cutting and grinding to size are 1cm3Luffa fragment, press
Parts by weight meter, 45 parts of deionized waters, 10 parts of citric acid solutions, 3 parts of polyvinyl alcohol and 2 parts of peach gum powder are weighed respectively and are placed in burning
In cup, coating modification coagulant liquid, in mass ratio 1 are stirred to obtain：25, luffa fragment is dipped to coating modification coagulant liquid
In, after soaking 3h, filter cake and vacuum freeze drying are filtered to obtain, ball milling crosses 80 mesh sieves, obtains modified loofah sponge particle；In parts by weight
Meter, 50 parts of formalins of mass fraction 40%, 60 parts of melamines, 1 part of polyvinyl alcohol, 2 parts of trihydroxyethyl isocyanides are weighed respectively
Urate and 10 parts of citric acids are placed in three-necked flask, and at 55 DEG C after heating water bath 1h, then ice-water bath is cooled to room at 0 DEG C
Temperature, it is prepared into modified cyanurotriamide resin；Count in parts by weight, weigh 45 parts of modified cyanurotriamide resins, 10 parts of modifications respectively
Luffa particle, 3 parts of pentanes, 6 parts of oxalic acid solutions of mass fraction 5%, 3 parts of Tween-80s are placed in mixer, are stirred simultaneously
It is poured into mould, sealed mold is placed in 100 DEG C of baking ovens, and after thermal insulation foaming 2h, standing is cooled to 55 DEG C, heat preservation solidification 2h
Afterwards, stand and be cooled to room temperature, you can be prepared into a kind of obdurability melamine foam material.
Example 2
In mass ratio 1：10, citric acid and deionized water are stirred, obtain citric acid solution, then takes ripe sponge gourd, natural wind
After dry, removed the peel and clean drying, seed obtains luffa in removal, and cutting and grinding to size are 1cm3Luffa fragment, press
Parts by weight meter, 47 parts of deionized waters, 12 parts of citric acid solutions, 4 parts of polyvinyl alcohol and 2 parts of peach gum powder are weighed respectively and are placed in burning
In cup, coating modification coagulant liquid, in mass ratio 1 are stirred to obtain：25, luffa fragment is dipped to coating modification coagulant liquid
In, after soaking 4h, filter cake and vacuum freeze drying are filtered to obtain, ball milling crosses 80 mesh sieves, obtains modified loofah sponge particle；In parts by weight
Meter, 47 parts of formalins of mass fraction 40%, 63 parts of melamines, 1 part of polyvinyl alcohol, 2 parts of trihydroxyethyl isocyanides are weighed respectively
Urate and 12 parts of citric acids are placed in three-necked flask, and at 60 DEG C after heating water bath 1h, then ice-water bath is cooled to room at 2 DEG C
Temperature, it is prepared into modified cyanurotriamide resin；Count in parts by weight, weigh 47 parts of modified cyanurotriamide resins, 12 parts of modifications respectively
Luffa particle, 4 parts of pentanes, 7 parts of oxalic acid solutions of mass fraction 5%, 4 parts of Tween-80s are placed in mixer, are stirred simultaneously
It is poured into mould, sealed mold is placed in 110 DEG C of baking ovens, and after thermal insulation foaming 2h, standing is cooled to 68 DEG C, heat preservation solidification 2h
Afterwards, stand and be cooled to room temperature, you can be prepared into a kind of obdurability melamine foam material.
Example 3
In mass ratio 1：10, citric acid and deionized water are stirred, obtain citric acid solution, then takes ripe sponge gourd, natural wind
After dry, removed the peel and clean drying, seed obtains luffa in removal, and cutting and grinding to size are 1cm3Luffa fragment, press
Parts by weight meter, 50 parts of deionized waters, 15 parts of citric acid solutions, 5 parts of polyvinyl alcohol and 3 parts of peach gum powder are weighed respectively and are placed in burning
In cup, coating modification coagulant liquid, in mass ratio 1 are stirred to obtain：25, luffa fragment is dipped to coating modification coagulant liquid
In, after soaking 5h, filter cake and vacuum freeze drying are filtered to obtain, ball milling crosses 80 mesh sieves, obtains modified loofah sponge particle；In parts by weight
Meter, 50 parts of formalins of mass fraction 40%, 65 parts of melamines, 2 parts of polyvinyl alcohol, 3 parts of trihydroxyethyl isocyanides are weighed respectively
Urate and 15 parts of citric acids are placed in three-necked flask, and at 65 DEG C after heating water bath 2h, then ice-water bath is cooled to room at 5 DEG C
Temperature, it is prepared into modified cyanurotriamide resin；Count in parts by weight, weigh 50 parts of modified cyanurotriamide resins, 15 parts of modifications respectively
Luffa particle, 5 parts of pentanes, 8 parts of oxalic acid solutions of mass fraction 5%, 5 parts of Tween-80s are placed in mixer, are stirred simultaneously
It is poured into mould, sealed mold is placed in 120 DEG C of baking ovens, and after thermal insulation foaming 3h, standing is cooled to 70 DEG C, heat preservation solidification 3h
Afterwards, stand and be cooled to room temperature, you can be prepared into a kind of obdurability melamine foam material.
Reference examples：The foamed material of Changsha Co., Ltd production.
The foamed material of example and reference examples is detected, specific detection is as follows：
Compression performance is tested：According to standard ASTM D1621-2010, the 3385H type electronic universals produced using Instron companies
Material Testing Machine.The compression sample of 50 × 50 × 25mm sizes is taken at random in foam inside, and compression verification speed is set to 2.5mm/
min。
Specific testing result such as table 1.
Table 1
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Compressive strength (MPa) | 0.135 | 0.176 | 0.142 | 0.069 |
| Modulus of elasticity (MPa) | 2.75 | 3.75 | 2.85 | 1.06 |
As shown in Table 1, the melamine foam material compression performance that prepared by the present invention is best, its compressive strength, modulus of elasticity point
Da not 0.176MPa, 3.75MPa.Because melamine foam material foam aperture prepared by the present invention is small, rib length is steeped
It is small, the quantity increase of rib, and fineness change is smaller, when compressed, the increase of load pillar, be more uniformly stressed, cause foam
Compressibility is more preferable.
Claims (4)
1. a kind of preparation method of obdurability melamine foam material, it is characterised in that specifically preparation process is：
（1）In mass ratio 1:10, citric acid and deionized water are stirred, citric acid solution is obtained, counts in parts by weight, respectively
Weigh 45~50 parts of deionized waters, 10~15 parts of citric acid solutions, 3~5 parts of polyvinyl alcohol and 2~3 parts of peach gum powder and be placed in burning
In cup, coating modification coagulant liquid is stirred to obtain；
（2）In mass ratio 1:25, it is 1cm by size3Luffa fragment is dipped in coating modification coagulant liquid, after immersion, is filtered
Filter cake and vacuum freeze drying, ball milling sieving, obtain modified loofah sponge particle；
（3）Count in parts by weight, respectively weigh 45~50 parts of formalins, 60~65 parts of melamines, 1~2 part of polyvinyl alcohol,
2~3 parts of trihydroxyethyl isocyanuric esters and 10~15 parts of citric acids, after heating water bath, room temperature is cooled to, is prepared into modified trimerization
Melamine resin；
（4）Count in parts by weight, weigh 45~50 parts of modified cyanurotriamide resins, 10~15 parts of modified loofah sponge particles, 3 respectively
~5 parts of pentanes, 6~8 parts of oxalic acid solutions, 3~5 parts of Tween-80s are placed in mixer, are stirred and are poured into mould,
Sealed mold simultaneously after 2~3h of thermal insulation foaming, stands and cooled down, and after heat preservation solidification, standing is cooled to room temperature, you can is prepared into one kind by force
Toughness melamine foam material.
A kind of 2. preparation method of obdurability melamine foam material according to claim 1, it is characterised in that：Step
（3）Described cooling is that ice-water bath cooling is handled at 0~5 DEG C.
A kind of 3. preparation method of obdurability melamine foam material according to claim 1, it is characterised in that：Step
（4）Described thermal insulation foaming temperature is 100~120 DEG C.
A kind of 4. preparation method of obdurability melamine foam material according to claim 1, it is characterised in that：Step
（4）Described heat preservation solidification temperature is 55~70 DEG C.
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| CN201710933722.6A CN107501858A (en) | 2017-10-10 | 2017-10-10 | A kind of preparation method of obdurability melamine foam material |
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| CN201710933722.6A CN107501858A (en) | 2017-10-10 | 2017-10-10 | A kind of preparation method of obdurability melamine foam material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102296A (en) * | 2017-12-31 | 2018-06-01 | 郑州峰泰纳米材料有限公司 | A kind of low brittleness melamine foams and preparation method thereof |
| CN110066417A (en) * | 2019-04-26 | 2019-07-30 | 濮阳绿宇新材料科技股份有限公司 | A kind of preparation method of amino particle silk floss |
| JP2020076081A (en) * | 2018-10-31 | 2020-05-21 | ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド | Coating composition for forming resist underlayer film for EUV lithography process |
-
2017
- 2017-10-10 CN CN201710933722.6A patent/CN107501858A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102296A (en) * | 2017-12-31 | 2018-06-01 | 郑州峰泰纳米材料有限公司 | A kind of low brittleness melamine foams and preparation method thereof |
| JP2020076081A (en) * | 2018-10-31 | 2020-05-21 | ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド | Coating composition for forming resist underlayer film for EUV lithography process |
| CN110066417A (en) * | 2019-04-26 | 2019-07-30 | 濮阳绿宇新材料科技股份有限公司 | A kind of preparation method of amino particle silk floss |
| CN110066417B (en) * | 2019-04-26 | 2021-07-20 | 濮阳绿宇新材料科技股份有限公司 | Preparation method of amino particle cotton |
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Application publication date: 20171222 |