CN110372993A - A kind of melamine foamed plastic and preparation method thereof - Google Patents
A kind of melamine foamed plastic and preparation method thereof Download PDFInfo
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- CN110372993A CN110372993A CN201910741000.XA CN201910741000A CN110372993A CN 110372993 A CN110372993 A CN 110372993A CN 201910741000 A CN201910741000 A CN 201910741000A CN 110372993 A CN110372993 A CN 110372993A
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
- C08G12/32—Melamines
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08J9/0066—Use of inorganic compounding ingredients
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
Abstract
The invention belongs to melamine technical fields, more particularly to a kind of melamine foamed plastic and preparation method thereof, the melamine foamed plastic are made of following raw material: 30-40 parts of melamine, 110-150 parts of formaldehyde, 15-18 parts of foaming agent, 15-20 parts of emulsifier, 3-8 parts of manganese dioxide, 5-10 parts of silica, 10-20 parts of hydrotalcite, 20-30 parts of polyacrylic acid, 2-6 parts of crosslinking agent, 1-5 parts of compatilizer, 0.3-1 parts of initiator, 2-6 parts of coupling agent, 5-10 parts of dispersing agent, 1-5 parts and curing agent 3-8 parts of basic catalyst；Melamine foamed plastic free formaldehyde content of the present invention is low, and excellent in mechanical performance, preparation method is simple.
Description
Technical field
The invention belongs to melamine technical fields more particularly to a kind of melamine foamed plastic and preparation method thereof.
Background technique
Melamine foamed plastic is a kind of novel foamed plastic with high opening rate, three-dimensional net structure, is had very excellent
The performances such as good sound absorbing performance, flame retardant property, heat-proof quality, water suction-water retention property, hydrothermal stability and secondary operation, because
And there is very extensive application field.
However there is free formaldehyde in current melamine foamed plastic, formaldehyde constitutes huge prestige to human health
The side of body.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides that a kind of free formaldehyde content is low, the melamine of excellent in mechanical performance
Amine foam, preparation method is simple.
The technical scheme to solve the above technical problems is that a kind of melamine foamed plastic, former by following parts by weight
Material is made: 30-40 parts of melamine, 110-150 parts of formaldehyde, 15-18 parts of foaming agent, 15-20 parts of emulsifier, manganese dioxide 3-8
Part, is caused 5-10 parts of silica, 10-20 parts of hydrotalcite, 20-30 parts of polyacrylic acid, 2-6 parts of crosslinking agent, 1-5 parts of compatilizer
0.3-1 parts of agent, 2-6 parts of coupling agent, 5-10 parts of dispersing agent, 1-5 parts and curing agent 3-8 parts of basic catalyst.
Based on the above technical solution, the present invention can also be improved as follows.
As the further preferred melamine foamed plastic of the present invention, it is made of following raw material: 30 parts of melamine, first
110 parts of aldehyde, 15 parts of foaming agent, 15 parts of emulsifier, 3 parts of manganese dioxide, 5 parts of silica, 10 parts of hydrotalcite, polyacrylic acid 20
Part, 2 parts of crosslinking agent, 1 part of compatilizer, 0.3 part of initiator, 2 parts of coupling agent, 5 parts of dispersing agent, 1 part of basic catalyst and curing agent 3
Part.
As the further preferred melamine foamed plastic of the present invention, it is made of following raw material: 35 parts of melamine, first
130 parts of aldehyde, 17 parts of foaming agent, 18 parts of emulsifier, 6 parts of manganese dioxide, 8 parts of silica, 15 parts of hydrotalcite, polyacrylic acid 25
Part, 4 parts of crosslinking agent, 3 parts of compatilizer, 0.7 part of initiator, 4 parts of coupling agent, 8 parts of dispersing agent, 3 parts of basic catalyst and curing agent 6
Part.
As the further preferred melamine foamed plastic of the present invention, it is made of following raw material: 40 parts of melamine, first
150 parts of aldehyde, 18 parts of foaming agent, 20 parts of emulsifier, 8 parts of manganese dioxide, 0 part of silica 1,20 parts of hydrotalcite, polyacrylic acid 30
Part, 6 parts of crosslinking agent, 5 parts of compatilizer, 1 part of initiator, 6 parts of coupling agent, 10 parts of dispersing agent, 5 parts of basic catalyst and curing agent 8
Part.
As the further preferred melamine foamed plastic of the present invention, the foaming agent be sodium carbonate, sodium bicarbonate, isopentane,
The mixture of one or more of pentane and n-hexane, the emulsifier are alkylbenzene sulfonate, alkylphenol-polyethenoxy
The mixture of one or more of ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol polyethenoxy ether and alkylnaphthalene sulfonate, institute
State the mixing that crosslinking agent is one or more of dihydroxymethyl dihydroxy ethyl urea, glutaraldehyde and N, N '-methylene acrylamide
Object, the compatilizer be maleic anhydride graft phenylethene or maleic anhydride grafted propylene nitrile-butadienestyrene copolymer, it is described
Dispersing agent is oxidized polyethylene wax or chlorinated polypropylene wax, and the coupling agent is silane coupling agent or stearate, the initiation
Agent is ammonium persulfate, and the basic catalyst is sodium hydroxide or potassium hydroxide, and the curing agent is boric acid, glutamic acid and amino
The mixture of one or more of three methylenephosphonic acids.
The present invention also provides a kind of preparation methods of melamine foamed plastic, comprising the following steps:
A, raw material is weighed by following parts by weight: 30-40 parts of melamine, 110-150 parts of formaldehyde, 15-18 parts of foaming agent, cream
15-20 parts of agent, 3-8 parts of manganese dioxide, 5-10 parts of silica, 10-20 parts of hydrotalcite, 20-30 parts of polyacrylic acid, crosslinking agent
2-6 parts, 1-5 parts of compatilizer, 0.3-1 parts of initiator, 2-6 parts of coupling agent, 5-10 parts of dispersing agent, 1-5 parts of basic catalyst, solidification
3-8 parts and water 80-100 parts of agent；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 80-85 DEG C of temperature, reacts 20-30min, obtain
It is spare to melamine performed polymer；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, at 100-200 DEG C
Under the conditions of temperature, 3-4h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 200-400 mesh in 500-600 DEG C of heat preservation 1-2h, then by hydrotalcite and manganese dioxide, poly- third
Olefin(e) acid, compatilizer, coupling agent, water mix under the conditions of 600-800rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, consolidate
The mixture that agent and step C are obtained, mixes under the conditions of 800-1000rpm, followed by 100-150 DEG C of temperature condition
Under, react 2-3h, finally under the conditions of 240-340 DEG C hot pressing 5-10min to get melamine foamed plastic.
The beneficial effects of the present invention are: being acted in product of the present invention using the catalytic degradation of manganese dioxide, degrade free
Formaldehyde, polyacrylic acid and melamine form the tridimensional network of gel, can effectively coat formaldehyde, reduce overflowing for formaldehyde
Out, while the combination of the tridimensional network and silica enhances the intensity of melamine foamed plastic, while using melamine
There is the phenomenon that picking when amine, causes the harm of human health, and hydrotalcite can effectively adsorb dust, the stratiform knot of hydrotalcite
There is the charge opposite with dust in structure, promotes the suction-operated to dust.
Specific embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Embodiment 1
A, raw material is weighed by following weight: melamine 30g, formaldehyde 110g, foaming agent 15g, emulsifier 15g, titanium dioxide
Manganese 3g, silica 5g, hydrotalcite 10g, polyacrylic acid 20g, crosslinking agent 2g, compatilizer 1g, initiator 0.3g, coupling agent 2g,
Dispersing agent 5g, basic catalyst 1g, curing agent 3g and water 80g；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 80 DEG C of temperature, reacts 20min, obtain trimerization
Cyanamide performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 100 DEG C of temperature
Under the conditions of, 3h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 200 mesh in 500 DEG C of heat preservation 1h, then by hydrotalcite and manganese dioxide, polyacrylic acid, compatible
Agent, coupling agent, water mix under the conditions of 600rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, curing agent and step C
Obtained mixture mixes under the conditions of 800rpm, followed by under the conditions of 100 DEG C of temperature, 2h is reacted, finally in 240 DEG C of items
Hot pressing 5min is under part to get melamine foamed plastic.
The foaming agent is sodium carbonate, and the emulsifier is alkylbenzene sulfonate, and the crosslinking agent is dihydroxymethyl dihydroxy
Ethyl carbamide, the compatilizer are maleic anhydride graft phenylethene, and the dispersing agent is oxidized polyethylene wax, and the coupling agent is second
Alkenyl triethoxysilane, the initiator are ammonium persulfate, and the basic catalyst is sodium hydroxide, and the curing agent is boron
Acid.
Embodiment 2
A, raw material is weighed by following weight: melamine 35g, formaldehyde 130g, foaming agent 17g, emulsifier 18g, titanium dioxide
Manganese 6g, silica 8g, hydrotalcite 15g, polyacrylic acid 25g, crosslinking agent 4g, compatilizer 3g, initiator 0.7g, coupling agent 4g,
Dispersing agent 8g, basic catalyst 3g, curing agent 6g and water 80-100g；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 83 DEG C of temperature, reacts 25min, obtain trimerization
Cyanamide performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 150 DEG C of temperature
Under the conditions of, 3-4h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 300 mesh in 550 DEG C of heat preservation 1.5h, then by hydrotalcite and manganese dioxide, polyacrylic acid, compatible
Agent, coupling agent, water mix under the conditions of 700rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, curing agent and step C
Obtained mixture mixes under the conditions of 900rpm, followed by under the conditions of 130 DEG C of temperature, 2.5h is reacted, finally at 290 DEG C
Under the conditions of hot pressing 8min to get melamine foamed plastic.
The foaming agent is sodium bicarbonate, and the emulsifier is alkyl phenol polyoxyethylene ether, and the crosslinking agent is glutaraldehyde,
The compatilizer is maleic anhydride grafted propylene nitrile-butadienestyrene copolymer, and the dispersing agent is chlorinated polypropylene wax, institute
Stating coupling agent is calcium stearate, and the initiator is ammonium persulfate, and the basic catalyst is potassium hydroxide, and the curing agent is
Glutamic acid.
Embodiment 3
A, raw material is weighed by following weight: melamine 40g, formaldehyde 150g, foaming agent 18g, emulsifier 20g, titanium dioxide
Manganese 8g, silica 1 0g, hydrotalcite 20g, polyacrylic acid 30g, crosslinking agent 6g, compatilizer 5g, initiator 1g, coupling agent 6g, divide
Powder 10g, basic catalyst 5g, curing agent 8g and water 100g；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 85 DEG C of temperature, reacts 30min, obtain trimerization
Cyanamide performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 200 DEG C of temperature
Under the conditions of, 4h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 400 mesh in 600 DEG C of heat preservation 2h, then by hydrotalcite and manganese dioxide, polyacrylic acid, compatible
Agent, coupling agent, water mix under the conditions of 800rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, curing agent and step C
Obtained mixture mixes under the conditions of 1000rpm, followed by under the conditions of 150 DEG C of temperature, 3h is reacted, finally in 340 DEG C of items
Hot pressing 10min is under part to get melamine foamed plastic.
The foaming agent is isopentane, and the emulsifier is Ben-zylphenol Polyoxyethyl Ether, and the crosslinking agent is N, N '-methylene
Base acrylamide, the compatilizer are maleic anhydride grafted propylene nitrile-butadienestyrene copolymer, and the dispersing agent is oxidation
Polypropylene wax, the coupling agent are magnesium stearate, and the initiator is ammonium persulfate, and the basic catalyst is sodium hydroxide,
The curing agent is aminotrimethylenephosphonic acid.
Embodiment 4
A, raw material is weighed by following weight: melamine 38g, formaldehyde 142g, foaming agent 17g, emulsifier 18g, titanium dioxide
Manganese 7g, silica 9g, hydrotalcite 18g, polyacrylic acid 28g, crosslinking agent 5g, compatilizer 4g, initiator 0.8g, coupling agent 5g,
Dispersing agent 8g, basic catalyst 4g, curing agent 7g and water 95g；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 83 DEG C of temperature, reacts 28min, obtain trimerization
Cyanamide performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 180 DEG C of temperature
Under the conditions of, 3.8h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 380 mesh in 580 DEG C of heat preservation 1.8h, then by hydrotalcite and manganese dioxide, polyacrylic acid, compatible
Agent, coupling agent, water mix under the conditions of 780rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, curing agent and step C
Obtained mixture mixes under the conditions of 980rpm, followed by under the conditions of 140 DEG C of temperature, 2.8h is reacted, finally at 320 DEG C
Under the conditions of hot pressing 8min to get melamine foamed plastic.
The foaming agent is pentane, and the emulsifier is alkylnaphthalene sulfonate, and the crosslinking agent is N, N '-methylene third
Acrylamide, the compatilizer are maleic anhydride grafted propylene nitrile-butadienestyrene copolymer, and the dispersing agent is oxidation poly- third
Alkene wax, the coupling agent are vinyltrimethoxysilane, and the initiator is ammonium persulfate, and the basic catalyst is hydrogen-oxygen
Change potassium, the curing agent is aminotrimethylenephosphonic acid.
Comparative example 1
A, raw material is weighed by following weight: melamine 20g, formaldehyde 100g, foaming agent 10g, emulsifier 10g, titanium dioxide
Manganese 1g, silica 1 g, hydrotalcite 3g, polyacrylic acid 5g, crosslinking agent 1g, compatilizer 0.5g, initiator 0.1g, coupling agent 1g,
Dispersing agent 2g, basic catalyst 0.1g, curing agent 2g and water 50g；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 60 DEG C of temperature, reacts 10min, obtain trimerization
Cyanamide performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 80 DEG C of temperature
Under the conditions of, 2h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 100 mesh in 300 DEG C of heat preservation 0.3h, then by hydrotalcite and manganese dioxide, polyacrylic acid, compatible
Agent, coupling agent, water mix under the conditions of 400rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, curing agent and step C
Obtained mixture mixes under the conditions of 500rpm, followed by under the conditions of 80 DEG C of temperature, 1h is reacted, finally in 200 DEG C of conditions
Lower hot pressing 3min is to get melamine foamed plastic.
The foaming agent is sodium carbonate, and the emulsifier is alkylbenzene sulfonate, and the crosslinking agent is dihydroxymethyl dihydroxy
Ethyl carbamide, the compatilizer are maleic anhydride graft phenylethene, and the dispersing agent is oxidized polyethylene wax, and the coupling agent is second
Alkenyl triethoxysilane, the initiator are ammonium persulfate, and the basic catalyst is sodium hydroxide, and the curing agent is boron
Acid.
Comparative example 2
A, raw material is weighed by following weight: melamine 60g, formaldehyde 180g, foaming agent 30g, emulsifier 30g, titanium dioxide
Manganese 15g, silica 20g, hydrotalcite 30g, polyacrylic acid 40g, crosslinking agent 10g, compatilizer 10g, initiator 5g, coupling agent
10g, dispersing agent 15g, basic catalyst 10g, curing agent 15g and water 150g；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 90 DEG C of temperature, reacts 50min, obtain trimerization
Cyanamide performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 250 DEG C of temperature
Under the conditions of, 6h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 500 mesh in 700 DEG C of heat preservation 3h, then by hydrotalcite and manganese dioxide, polyacrylic acid, compatible
Agent, coupling agent, water mix under the conditions of 900rpm, are subsequently added into crosslinking agent, initiator, dispersing agent, curing agent and step C
Obtained mixture mixes under the conditions of 1500rpm, followed by under the conditions of 200 DEG C of temperature, 5h is reacted, finally in 400 DEG C of items
Hot pressing 20min is under part to get melamine foamed plastic.
The foaming agent is isopentane, and the emulsifier is Ben-zylphenol Polyoxyethyl Ether, and the crosslinking agent is N, N '-methylene
Base acrylamide, the compatilizer are maleic anhydride grafted propylene nitrile-butadienestyrene copolymer, and the dispersing agent is oxidation
Polypropylene wax, the coupling agent are magnesium stearate, and the initiator is ammonium persulfate, and the basic catalyst is sodium hydroxide,
The curing agent is aminotrimethylenephosphonic acid.
Embodiment 1-4 and comparative example 1-2 are tested as follows, concrete outcome is as shown in table 1 below:
Table 1
From table 1, it can be seen that, its effective degradation of formaldehyde of the melamine foamed plastic that the present invention is prepared reduces releasing for formaldehyde
High-volume, while excellent in mechanical performance.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of melamine foamed plastic, which is characterized in that be made of following raw material: 30-40 parts of melamine, formaldehyde
110-150 parts, 15-18 parts of foaming agent, 15-20 parts of emulsifier, 3-8 parts of manganese dioxide, 5-10 parts of silica, hydrotalcite 10-
20 parts, 20-30 parts of polyacrylic acid, 2-6 parts of crosslinking agent, 1-5 parts of compatilizer, 0.3-1 parts of initiator, 2-6 parts of coupling agent, dispersing agent
5-10 parts, 1-5 parts and curing agent 3-8 parts of basic catalyst.
2. a kind of melamine foamed plastic according to claim 1, which is characterized in that be made of following raw material: trimerization
30 parts of cyanamide, 110 parts of formaldehyde, 15 parts of foaming agent, 15 parts of emulsifier, 3 parts of manganese dioxide, 5 parts of silica, 10 parts of hydrotalcite,
20 parts of polyacrylic acid, 2 parts of crosslinking agent, 1 part of compatilizer, 0.3 part of initiator, 2 parts of coupling agent, 5 parts of dispersing agent, basic catalyst 1
Part with 3 parts of curing agent.
3. a kind of melamine foamed plastic according to claim 1, which is characterized in that be made of following raw material: trimerization
35 parts of cyanamide, 130 parts of formaldehyde, 17 parts of foaming agent, 18 parts of emulsifier, 6 parts of manganese dioxide, 8 parts of silica, 15 parts of hydrotalcite,
25 parts of polyacrylic acid, 4 parts of crosslinking agent, 3 parts of compatilizer, 0.7 part of initiator, 4 parts of coupling agent, 8 parts of dispersing agent, basic catalyst 3
Part with 6 parts of curing agent.
4. a kind of melamine foamed plastic according to claim 1, which is characterized in that be made of following raw material: trimerization
40 parts of cyanamide, 150 parts of formaldehyde, 18 parts of foaming agent, 20 parts of emulsifier, 8 parts of manganese dioxide, 0 part of silica 1,20 parts of hydrotalcite,
30 parts of polyacrylic acid, 6 parts of crosslinking agent, 5 parts of compatilizer, 1 part of initiator, 6 parts of coupling agent, 10 parts of dispersing agent, 5 parts of basic catalyst
With 8 parts of curing agent.
5. any one of -4 a kind of melamine foamed plastic according to claim 1, which is characterized in that the foaming agent is carbonic acid
The mixture of one or more of sodium, sodium bicarbonate, isopentane, pentane and n-hexane, the emulsifier are benzene sulfonamide
One in hydrochlorate, alkyl phenol polyoxyethylene ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol polyethenoxy ether and alkylnaphthalene sulfonate
Kind or several mixtures, the crosslinking agent are in dihydroxymethyl dihydroxy ethyl urea, glutaraldehyde and N, N '-methylene acrylamide
One or more of mixtures, the compatilizer is maleic anhydride graft phenylethene or maleic anhydride grafted propylene nitrile-fourth two
Alkene styrol copolymer, the dispersing agent are oxidized polyethylene wax or chlorinated polypropylene wax, and the coupling agent is silane coupling agent
Or stearate, the initiator are ammonium persulfate, the basic catalyst is sodium hydroxide or potassium hydroxide, the curing agent
For the mixture of one or more of boric acid, glutamic acid and aminotrimethylenephosphonic acid.
6. a kind of preparation method of melamine foamed plastic, which comprises the following steps:
A, raw material is weighed by following parts by weight: 30-40 parts of melamine, 110-150 parts of formaldehyde, 15-18 parts of foaming agent, emulsifier
15-20 parts, 3-8 parts of manganese dioxide, 5-10 parts of silica, 10-20 parts of hydrotalcite, 20-30 parts of polyacrylic acid, crosslinking agent 2-6
Part, 1-5 parts of compatilizer, 0.3-1 parts of initiator, 2-6 parts of coupling agent, 5-10 parts of dispersing agent, 1-5 parts of basic catalyst, curing agent
3-8 parts and water 80-100 parts；
B, melamine, formaldehyde and basic catalyst are mixed, under the conditions of 80-85 DEG C of temperature, reacts 20-30min, obtain three
Poly cyanamid performed polymer, it is spare；
C, the melamine performed polymer for obtaining step B and silica, foaming agent, emulsifier mix, in 100-200 DEG C of temperature
Under the conditions of, 3-4h is reacted, mixture is obtained, it is spare；
D, by the hydrotalcite of 200-400 mesh in 500-600 DEG C of heat preservation 1-2h, then by hydrotalcite and manganese dioxide, polyacrylic acid,
Compatilizer, coupling agent, water mix under the conditions of 600-800rpm, be subsequently added into crosslinking agent, initiator, dispersing agent, curing agent with
And the mixture that step C is obtained, it mixes under the conditions of 800-1000rpm, followed by under the conditions of 100-150 DEG C of temperature, reacts
2-3h, finally under the conditions of 240-340 DEG C hot pressing 5-10min to get melamine foamed plastic.
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| CN111864222A (en) * | 2020-06-22 | 2020-10-30 | 江苏大学 | Preparation method of zinc-based bimetallic-nitrogen carbon-doped material and application of zinc-based bimetallic-nitrogen carbon-doped material to electrode catalyst |
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