CN108084649A - Modified melamine-formaldehyde moulding compound and its preparation method and application - Google Patents
Modified melamine-formaldehyde moulding compound and its preparation method and application Download PDFInfo
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- CN108084649A CN108084649A CN201711471727.8A CN201711471727A CN108084649A CN 108084649 A CN108084649 A CN 108084649A CN 201711471727 A CN201711471727 A CN 201711471727A CN 108084649 A CN108084649 A CN 108084649A
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- 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
- C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08L61/28—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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
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- C08K2201/006—Additives being defined by their surface area
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
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- 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
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
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- 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
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- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/53—Core-shell polymer
Abstract
The present invention relates to chemical industry polymeric material fields, and in particular to a kind of modified melamine-formaldehyde moulding compound and its preparation method and application, the modified melamine-formaldehyde moulding compound, in parts by weight meter include following component：55 60 parts of melamine resin, 20 30 parts of wood pulp, 15 parts of inorganic filler, 0.5 3 parts of elastomer impact modifier.The modified melamine-formaldehyde moulding compound of the present invention by the synergistic effect between each component, adds impact modifier, effectively improves the shock resistance of modified melamine-formaldehyde moulding compound, improve its brittleness, widen the application range of modified melamine-formaldehyde moulding compound.
Description
Technical field
The present invention relates to chemical industry polymeric material field, in particular to a kind of modified melamine-formaldehyde moulding compound
And its preparation method and application.
Background technology
Melamine formaldehyde molding compound belongs to one of thermosetting plastics amino film plastics, is commonly called as melamine molding compound, another
Branch is urea moulding material, is commonly called as urea-formaldehyde moulding powder.The base material that the two uses is respectively melamine, formaldehyde and urea, formaldehyde, is contained respectively
There are three amino and two amino, therefore it is referred to as amino film plastics.
Melamine formaldehyde molding compound using melamine resin as base-material, then with the materials such as filler, by mixing,
The two-step processes such as dry, broken, ball milling, sub-sieve process powdering moulding compound, and then are added by processes such as non-slurry pelletizing, coolings
Work is into graininess melamine formaldehyde molding compound.
Melamine formaldehyde molding compound have good heat resistance, solvent resistance, boiling water resistance, flame resistance, arc resistance,
Hardness is big, bright in luster, odorless, tasteless, electrical and mechanical performance, this is that urea-formaldehyde plastics and phenoplasts are incomparable, and
Melamine formaldehyde molding compound is also because more than feature is widely used.
But the material fragility of melamine formaldehyde molding compound is apparent, and toughness is low, is easily broken off when being hit, draw ratio great disparity
Under the conditions of verticality be not easy to keep, greatly limit the application field of melamine formaldehyde molding compound.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of modified melamine-formaldehyde moulding compound, the modified cyanurotriamide
Formaldehyde molding compound has excellent impact strength, improves the brittleness of melamine formaldehyde molding compound, has widened melamine
The application field of formaldehyde molding compound.
The second object of the present invention is to provide a kind of preparation method of the modified melamine-formaldehyde moulding compound, behaviour
Make simplicity, stability is good.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
Modified melamine-formaldehyde moulding compound, in parts by weight meter include following component：
55-60 parts of melamine resin；
20-30 parts of wood pulp；
1-5 parts of inorganic filler；
0.5-3 parts of elastomer impact modifier.
The modified melamine-formaldehyde moulding compound of the present invention by the synergistic effect between each component, adds impact modifier,
The shock resistance of modified melamine-formaldehyde moulding compound is effectively improved, improves its brittleness, widens melamine formaldehyde molding compound
Application range.
Preferably, it is the core-shell particle of shell that the elastomer impact modifier, which is included by core, thermoplastic material of rubber particle,
One kind in inorganic nanoparticle modified polyurethane elastomer and Methyl Methacrylate-Butadiene-Styrene Copolymer or
It is a variety of.It is furthermore preferred that the elastomer impact modifier is the elastomer impact modifier of coupling processing.
Preferably, the coupling agent of the coupling processing is silane coupling agent or titante coupling agent.
Preferably, the core-shell particle is using esters of acrylic acid rubber as core, using polymethacrylate plastics as shell
Core-shell particle.
Preferably, the inorganic nanoparticle modified polyurethane elastomer include silica modified polyurethane elastomer,
One or more in montmorillonite modified polyurethane elastomer and silica/montmorillonite modified polyurethane elastomer.
Esters of acrylic acid can greatly promote and improve the shock resistance and processing performance of melamine formaldehyde molding compound,
And the addition of esters of acrylic acid can improve the surface smooth finish of product.Esters of acrylic acid has good thermal stability, resistance to old
It is good to change performance.The addition of nucleocapsid particles causes Stress non-homogeneity in modified melamine-formaldehyde moulding compound, and nucleocapsid particles, which are used as, to be changed
The stress concentration center of property melamine formaldehyde molding compound, when material stress, the equatorial plane of nucleocapsid particles can induce largely
Crazing, and shear band can be induced, substantial amounts of impact energy is absorbed, and nucleocapsid particles can effectively control the development of crazing, growth
Crazing stress concentration run into another nucleocapsid particles less than critical value or crazing, then crazing can be terminated without developing into crackle,
So as to improve the impact strength of material.
Preferably, the mass ratio of the elastomer impact modifier and melamine resin is (0.01-0.03) ﹕ 1.
It is furthermore preferred that the mass ratio of the elastomer impact modifier and melamine resin is 0.02 ﹕ 1.
The addition of impact modifier within the above range, can obtain the impact strength of modified melamine-formaldehyde moulding compound
To effectively improving.
Preferably, the inorganic filler includes the one or more in aluminium oxide, silica and calcium carbonate.More preferably
, the silica is aerosil, and the calcium carbonate is calcium carbonate superfine powder.It inorganic is filled out it is further preferred that described
Expect the inorganic filler for coupling processing.
Preferably, the coupling agent of the coupling processing is silane coupling agent or titante coupling agent.
The filler can further improve the mechanical strength and processing performance of moulding compound, and can carry out enhancing increasing to material
It is tough.By the filler of coupling processing, its dispersiveness in melamine resin base-material can be improved, while enhance two kinds
Combination power between heterogeneity material.Above-mentioned filler can improve the intensity and ageing-resistant performance of material.Filler is abundant
It is dispersed in melamine resin, the performance of melamine resin can be improved comprehensively, including：Raising intensity,
Elongation percentage and raising resistance to ag(e)ing.
A part of group in the molecule of coupling agent can be formed strong with the various functional group reactions on filler surface
Chemical reaction and physical entanglement can occur with melamine resin for chemical bonding, another part group, and coupling agent inhibits
The separation of the phase of inorganic filler, and inorganic filler is made to organise, enhance with the compatibility of organic resin, even if increase loading
It can still be uniformly distributed, so as to which the larger inorganic filler of nature difference and melamine resin firmly be combined
Come, make to set up the molecular bridge with specific function between inorganic filler and melamine resin, improve melamine first
The comprehensive performance of aldehyde moulding compound.
Aluminium oxide is preferably gamma-alumina, and specific surface area is more than 230cm2/ g, even particle size distribution, good dispersion, tool
There are heat safe inertia, porosity, good stability of the dimension can carry out strengthening and toughening to melamine resin.
Silica to uvioresistant, can improve the anti-aging property, intensity and chemical-resistance of material.
For calcium carbonate with respect to other fillers, cost is relatively low, and can improve the stability, hardness and rigidity of material, improves
The processing performance of plastics can improve the viscosity flow in mixing process.
Preferably, the modified melamine-formaldehyde moulding compound further includes releasing agent, curing agent and pigment.It is furthermore preferred that
The releasing agent includes the one or more in stearic acid, zinc stearate, ethylene bis stearic acid amide and silicone.The curing agent
Including the one or more in Sh curing agent, m-phenoxybenzoic acid, organic acid anhydride.The pigment includes titanium dioxide, gorgeous beauty
The yellow, one or more of titanium ultramarine.
The curing agent is latent curing agent, is decomposed after mould temperature is more than 120 DEG C in plastic processes and releases acid,
And then chain melamine resin condensation polymerization is promoted to form stereochemical structure；Or can also melt organic acid and be in acid
Property promote material solidification.Since the principle of solidification of melamine formaldehyde molding compound is sour curing, it is impossible to use the acid for being dissolved in water
Or have bisalt, it is extension property when loss is processed because in production process condensation polymerization reaction can shift to an earlier date.
Sh curing agent is a kind of high-temperature curing agent, is stablized in process of production, is stablized in product storage process, but is decomposed
Acid value is not low enough afterwards can influence curing degree, influence product surface glossiness, adding assistant m-phenoxybenzoic acid and organic acid anhydride energy
Enough promote curing degree, improve product surface glossiness.
Stearic acid not only has excellent lubricating action, additionally it is possible to effectively prevent chromatography fouling.Silicone can improve non-pole
The compatibility at interface, plays immersional wetting between the inorganic material and organic material of property.
The present invention also provides a kind of preparation methods of the modified melamine-formaldehyde moulding compound, include the following steps：
After each raw material mixed at high speed, vacuum dehydration drying obtains the modified melamine-formaldehyde moulding compound.
Preferably, by after inorganic filler coupling processing, mixed with other raw materials, vacuum dehydration drying obtains the modification
Melamine formaldehyde molding compound.
By inorganic filler elder generation coupling processing, the surface energy of inorganic filler and intermolecular Van der Waals can be reduced
Power prevents from reuniting, and improves the compatibility in organic resin, and inorganic uniform filling is made to be scattered in melamine resin
In, the performance of melamine resin can be improved comprehensively.
Preferably, the coupling processing includes the following steps：Coupling agent is sprayed to inorganic filler, heating stirring is obtained at coupling
The inorganic filler of reason.
Preferably, the preparation method of the melamine resin includes the following steps：Adjust formalin pH to
Between 8.5-9.0, (2.0-2.2) is pressed with melamine：1 mixed in molar ratio, after heating reaction all becomes clear to material, cooling
Cooling obtains the melamine resin.
The present invention also provides application of the modified melamine-formaldehyde moulding compound in dinner set product.The modification three
Melamine-formaldehyde moulding compound can extract formaldehyde ＜ 0.5ppm, meet state health standards after dinner set product is made in product,
It is safe to use harmless.
Compared with prior art, beneficial effects of the present invention are：
(1) collaboration adds in elastomer impact modifier by a certain percentage in melamine resin, can improve modified three
The shock resistance of melamine-formaldehyde moulding compound improves its brittleness, widens the application range of modified melamine-formaldehyde moulding compound；
(2) the inorganic filler of coupling processing is used, each raw material is made to be uniformly distributed in melamine resin, is improved
The comprehensive performance of plastics；
(3) modified melamine-formaldehyde moulding compound of the invention has excellent mechanical mechanics property；
(4) preparation method of the invention, by inorganic filler pre-treatment, improves the dispersion performance in resin, so as to have
Effect improves the shock resistance of modified melamine-formaldehyde moulding compound；
(5) modified melamine-formaldehyde moulding compound of the invention can be used for making tableware, be more than 30 ﹕ 1 in compacting draw ratio
In the case of can keep verticality, suitable for processing chopsticks, the substitution bamboo chopsticks that largely consume and wooden chopsticks for a long time economize on resources；
And can extract formaldehyde ＜ 0.5ppm in product, meet state health standards.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 60kg, wood pulp 28kg, calcium carbonate 2kg, acrylic rubber are kernel, with poly- methyl-prop
E pioic acid methyl ester plastics be shell ACR-201 types core-shell particle 1.2kg, titanium dioxide 1kg, phthalic anhydride 1kg, stearic acid
0.5kg。
Wherein, the calcium carbonate is the calcium carbonate superfine powder of coupling processing.The average grain diameter of the calcium carbonate superfine powder is 0.01-
0.08 μm, density 2.45-2.57g/cm3, specific surface area 10-70m2/ g, oil factor 23-36mL/100g, pH value are
8.3-9.0, calcination loss 44-46%, calcination rear oxidation calcium content 52-54%, iron, aluminium oxide content 0.2%.The idol
Connection agent is titante coupling agent, and the dosage of the coupling agent accounts for the 0.3% of inorganic filler quality.
Embodiment 2
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 55kg, wood pulp 27kg, silica 2kg, acrylic rubber are kernel, with poly- methyl
Methyl acrylate plastics are ACR-201 types core-shell particle 1.65kg, titanium dioxide 1kg, the tetrabydrophthalic anhydride 1kg of shell, firmly
Resin acid 0.5kg.
Wherein, the silica is the silica of coupling processing.The silica be aerosil, grain size
Between 2-3 μm.The coupling agent is silane coupling agent, and the dosage of the coupling agent accounts for the 0.2% of packing quality.
Embodiment 3
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 60kg, wood pulp 27kg, aluminium oxide 2kg, acrylic rubber are kernel, with poly- methyl-prop
E pioic acid methyl ester plastics are ACR-201 types core-shell particle 0.6kg, titanium dioxide 1kg, the organic acid anhydride curing agent 1kg of shell, stearic
Sour 0.5kg.
Wherein, the aluminium oxide is gamma-alumina, and specific surface area is more than 230cm2/ g, 20 μm of average grain diameter.The coupling
Agent is silane coupling agent, and the dosage of the coupling agent accounts for the 0.5% of packing quality.
Embodiment 4
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 60kg, wood pulp 27kg, aluminium oxide 1kg, silica 1 kg, silica modified poly- ammonia
Ester elastomer 1.2kg, titanium dioxide 1kg, organic acid anhydride curing agent 1kg, stearic acid 0.5kg.
Wherein, the aluminium oxide is gamma-alumina, and specific surface area is more than 230cm2/ g, 20 μm of average grain diameter.The coupling
Agent is silane coupling agent, and the dosage of the coupling agent accounts for the 0.5% of packing quality.The silica is the two of coupling processing
Silica.The silica is aerosil, and grain size is between 2-3 μm.The coupling agent is silane coupling agent, described
The dosage of coupling agent accounts for the 0.2% of packing quality.
The silica modified polyurethane elastomer is that silica is carried out at coupling with silane resin acceptor kh-550
Reason, graft modification obtains the silica of coupling processing, then using situ aggregation method synthetic silica modified polyurethane bullet
Property body.Wherein, the addition of the silica accounts for the 4% of the quality of polyurethane.
Embodiment 5
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 55kg, wood pulp 27kg, silica 3kg, silica/montmorillonite modified polyurethane bullet
Property body 1.65kg, titanium dioxide 1kg, organic acid anhydride curing agent 1kg, stearic acid 0.5kg.
Wherein, the silica is aerosil, and grain size is between 2-3 μm.The coupling agent is coupled for silanes
Agent, the dosage of the coupling agent account for the 0.2% of packing quality.
The silica/montmorillonite modified polyurethane elastomer is to silica and illiteracy with silane resin acceptor kh-550
The mass ratio of de- soil progress coupling processing, silica and montmorillonite is 1 ﹕ 1, and graft modification obtains the silica of coupling processing
And montmorillonite, then using situ aggregation method synthetic silica/montmorillonite modified polyurethane elastomer.Wherein, the dioxy
The addition of SiClx/montmorillonite accounts for the 3% of the quality of polyurethane.
Embodiment 6
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 60kg, wood pulp 27kg, calcium carbonate 3kg, montmorillonite modified polyurethane elastomer 0.6kg,
Titanium dioxide 1kg, organic acid anhydride curing agent 1kg, stearic acid 0.5kg.
Wherein, the calcium carbonate is the calcium carbonate superfine powder of coupling processing.The average grain diameter of the calcium carbonate superfine powder is 0.01-
0.08 μm, density 2.45-2.57g/cm3, specific surface area 10-70m2/ g, oil factor 23-36mL/100g, pH value are
8.3-9.0, calcination loss 44-46%, calcination rear oxidation calcium content 52-54%, iron, aluminium oxide content 0.2%.The idol
Connection agent is titante coupling agent, and the dosage of the coupling agent accounts for the 0.3% of inorganic filler quality.
The montmorillonite modified polyurethane elastomer is to carry out coupling processing to montmorillonite with silane resin acceptor kh-550, is connect
Branch modification obtains the montmorillonite of coupling processing, then synthesizes montmorillonite modified polyurethane elastomer using situ aggregation method.Wherein,
The addition of the montmorillonite accounts for the 4% of the quality of polyurethane.
Embodiment 7
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 60kg, wood pulp 27kg, calcium carbonate 3kg, methyl methacrylate-butadiene-styrene
Copolymer MBS type 1.2kg, titanium dioxide 1kg, organic acid anhydride curing agent 1kg, stearic acid 0.5kg.
Wherein, the calcium carbonate is the calcium carbonate superfine powder of coupling processing.The average grain diameter of the calcium carbonate superfine powder is 0.01-
0.08 μm, density 2.45-2.57g/cm3, specific surface area 10-70m2/ g, oil factor 23-36mL/100g, pH value are
8.3-9.0, calcination loss 44-46%, calcination rear oxidation calcium content 52-54%, iron, aluminium oxide content 0.2%.The idol
Connection agent is titante coupling agent, and the dosage of the coupling agent accounts for the 0.3% of inorganic filler quality.
The apparent relative density of the Methyl Methacrylate-Butadiene-Styrene Copolymer MBS is 1.02-1.03, is put down
Equal grain size is 20 μm.
Embodiment 8
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 55kg, wood pulp 27kg, silica 3kg, methyl methacrylate-butadiene-benzene second
Alkene copolymer MBS type 1.65kg, titanium dioxide 1kg, organic acid anhydride curing agent 1kg, stearic acid 0.5kg.
Wherein, the silica is aerosil, and grain size is between 2-3 μm.The coupling agent is coupled for silanes
Agent, the dosage of the coupling agent account for the 0.2% of packing quality.
The apparent relative density of the Methyl Methacrylate-Butadiene-Styrene Copolymer MBS is 1.02-1.03,
Average grain diameter is 20 μm.
Embodiment 9
Modified melamine-formaldehyde moulding compound provided in this embodiment, each raw material dosage are respectively：
Melamine resin 60kg, wood pulp 27kg, calcium carbonate 3kg, methyl methacrylate-butadiene-styrene
Copolymer MBS type 0.6kg, titanium dioxide 1kg, organic acid anhydride curing agent 1kg, stearic acid 0.5kg.
Wherein, the calcium carbonate is the calcium carbonate superfine powder of coupling processing.The average grain diameter of the calcium carbonate superfine powder is 0.01-
0.08 μm, density 2.45-2.57g/cm3, specific surface area 10-70m2/ g, oil factor 23-36mL/100g, pH value are
8.3-9.0, calcination loss 44-46%, calcination rear oxidation calcium content 52-54%, iron, aluminium oxide content 0.2%.The idol
Connection agent is titante coupling agent, and the dosage of the coupling agent accounts for the 0.3% of inorganic filler quality.
The apparent relative density of the Methyl Methacrylate-Butadiene-Styrene Copolymer MBS is 1.02-1.03,
Average grain diameter is 20 μm.
Embodiment 10
The preparation method of modified melamine-formaldehyde moulding compound described in embodiment 1-9, includes the following steps：
After each raw material mixed at high speed, vacuum dehydration drying obtains the modified melamine-formaldehyde moulding compound.
Specifically, formalin of the content of formaldehyde for 37% (containing 37g formaldehyde in per 100mL) is put into built-in disk
Pipe cooling has outside in the stainless steel cauldron of chuck heating, opens agitating paddle, the sodium hydroxide with mass fraction 5-10% is water-soluble
Liquid adjusts formalin pH value in kettle and to steam valve between 8.5-9.0, is then turned on 0.1MPa pressure steam is added slowly to add
Heat, and the cooling water for opening vertical (type) condenser prevents that formaldehyde is excessive, when temperature is increased to 45 DEG C, rubs by formaldehyde and melamine
You are than for (amount of 2.0-2.2) ﹕ 1 puts into melamine, at this time the undissolved presentation milky of melamine, when temperature is increased to
At 70 DEG C, steam off valve, making material temperature in kettle, when 80-83 DEG C is increased within half an hour, temperature no longer rises from raising
Height is again turned on steam valve and adds 0.08MPa pressure vapour heatings, and material starts to become clear in kettle when temperature reaches 88 DEG C, can close
Closing steam makes temperature in the kettle if temperature no longer can open a small amount of steam from rise temperature in the kettle be made to be increased to 90 DEG C from raising, closed
Steam maintains temperature, and material has all become clear at this time, and about 10min samplings is maintained to survey pH, and mass fraction 5- is used if pH is less than 8.7
10% sodium hydrate aqueous solution adjusts pH value to 9.0.Then sample in kettle is taken again, is mixed according to resin with 1 ﹕ 3 of water volume ratio
Solubility is tested, is scattered when resin instills blueing white in water as reaction end, opens coil pipe cooling water temperature at this time, in kettle
When reacting liquid temperature is reduced to 50 DEG C, cooling water is closed, it is spare to obtain melamine resin.
Inorganic filler such as aluminium oxide, silica and calcium carbonate are subjected to coupling processing, specifically：Filler is added at a high speed
In mixer, chuck leads to 0.2MPa heating, opens stirring and slowly runs, is then turned on vacuum suction and is dried, drying time
About 2h makes inorganic filler be dried to water content≤0.3% at 120 DEG C.After drying, the vacuum item of homogenizer is released
Part, and mixer carried out high-speed cruising, rotating speed is more than 800rpm/min, and passes through the compressed air of 0.1MPa by appropriate dilution
Coupling agent spray into homogenizer, inorganic filler is made to be coupled with coupling agent, high-speed stirred is coupled 5min or so, so
Discharge after stirring at low speed 5min again afterwards, obtains the inorganic filler of coupling processing, spare.
By in the foregoing melamine resin addition super mixer for synthesizing and obtaining, elastomer shock resistance is first added in
Agent adds wood pulp, the inorganic filler of coupling processing, releasing agent, curing agent and pigment and carries out high speed shear mixing 10-15min,
Vacuum dehydration 50min, less than 20%, forms loose granule to water content, then is dried through drier, this is because after vacuum dehydration
Substance be to belong to a degree of precondensation substance, water content continues to contract in the drying process still 20% or so
Polymerisation reaches the constantly increased process of molecular weight, while is also constantly to reduce the moisture brought by formaldehyde weak solution, simultaneously
Continued polycondensation is removed again closes the condensation water generated.After being sent into crusher in crushing after drying, the releasing agent and lubricant of surplus are added in,
Ball milling in ball mill is sent into, is adequately mixed after disperseing and goes out dressing sieve point, collects the fine powder packaging of certain fineness.
Experimental example 1
The test method of modified melamine-formaldehyde moulding compound reference standard obtained by embodiment 1-9 is subjected to impact strength
Test, result are as shown in table 1 below.
The impact strength test result of the melamine formaldehyde molding compound of 1 different disposal of table
It was found from from upper table, the present invention effectively increases modified melamine-formaldehyde mould by adding in elastomer impact modifier
The impact strength of plastics, and when the additive amount of elastomer impact modifier is the 2% of the quality of melamine formaldehyde molding compound
When, unnotched impact strength and notch impact strength can improve 34% and 12.5% respectively.And it was found from from upper table, with rubber
The effect for the core-shell particle that glue particle is core, thermoplastic material is shell is better than inorganic nanoparticle modified polyurethane elastomer, with
And methyl methacrylate-butadiene-styrene copolymer.
Experimental example 2
Modified melamine-formaldehyde moulding compound obtained by embodiment 1-9 is processed into graininess melamine formaldehyde molding compound
Afterwards, by standard press batten, impact strength test is carried out, result is as shown in table 2 below.
The impact strength test result of the melamine formaldehyde molding compound compacting batten of 2 different disposal of table
Experimental example 3
Modified melamine-formaldehyde moulding compound obtained by embodiment is pressed into the bowl of a diameter of 100mm and draw ratio is
30 ﹕ 1, the chopsticks of long 24cm, are immersed in the acetic acid of standard normal concentration, the amount of precipitation of its formaldehyde are measured, less than 0.5ppm/
ML complies fully with sanitary standard.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. modified melamine-formaldehyde moulding compound, which is characterized in that meter includes following component in parts by weight：
55-60 parts of melamine resin；
20-30 parts of wood pulp；
1-5 parts of inorganic filler；
0.5-3 parts of elastomer impact modifier.
2. modified melamine-formaldehyde moulding compound according to claim 1, which is characterized in that the elastomer impact modifier
Including being the core-shell particle of shell using rubber particle as core, thermoplastic material, inorganic nanoparticle modified polyurethane elastomer and
One or more in Methyl Methacrylate-Butadiene-Styrene Copolymer.
3. modified melamine-formaldehyde moulding compound according to claim 2, which is characterized in that the core-shell particle is with third
Olefin(e) acid ester rubber is core, the core-shell particle using polymethacrylate plastics as shell.
4. modified melamine-formaldehyde moulding compound according to claim 2, which is characterized in that the inorganic nano-particle changes
Property polyurethane elastomer include silica modified polyurethane elastomer, montmorillonite modified polyurethane elastomer and silica/
One or more in montmorillonite modified polyurethane elastomer.
5. according to claim 1-4 any one of them modified melamine-formaldehyde moulding compounds, which is characterized in that the elastomer
The mass ratio of impact modifier and melamine resin is (0.01-0.03) ﹕ 1.
6. modified melamine-formaldehyde moulding compound according to claim 1, which is characterized in that the inorganic filler includes oxygen
Change the one or more in aluminium, silica and calcium carbonate；
Preferably, the silica is aerosil, and the calcium carbonate is calcium carbonate superfine powder；
It is furthermore preferred that the inorganic filler is the inorganic filler of coupling processing.
7. modified melamine-formaldehyde moulding compound according to claim 6, which is characterized in that the coupling of the coupling processing
Agent is silane coupling agent or titante coupling agent.
8. modified melamine-formaldehyde moulding compound according to claim 1, which is characterized in that the modified cyanurotriamide first
Aldehyde moulding compound further includes releasing agent, curing agent and pigment.
9. the preparation method of claim 1-8 any one of them modified melamine-formaldehyde moulding compounds, which is characterized in that including
Following steps：
After each raw material mixed at high speed, vacuum dehydration drying obtains the modified melamine-formaldehyde moulding compound.
10. application of the claim 1-8 any one of them modified melamine-formaldehyde moulding compounds in dinner set product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082071A (en) * | 2018-07-03 | 2018-12-25 | 东莞唛铂纳米科技有限公司 | The manufacturing process of anti-bacteria melamine material |
| CN109280330A (en) * | 2018-09-29 | 2019-01-29 | 福建亿鑫泰新型材料有限公司 | A kind of high tenacity melamine and preparation method thereof |
| CN110564135A (en) * | 2018-06-05 | 2019-12-13 | 苏州新益特塑胶科技有限公司 | Melamine formaldehyde plastic |
| WO2020087550A1 (en) * | 2018-10-31 | 2020-05-07 | 安徽绿之态新材料有限公司 | Cellulose/melamine formaldehyde composite resin and preparation method thereof |
| CN112143045A (en) * | 2020-10-14 | 2020-12-29 | 安徽昌悌进出口贸易有限公司 | Porcelain-like bottle and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589109A (en) * | 2013-11-08 | 2014-02-19 | 苏州市双赢包装材料有限公司 | Formula of reinforced melaminoformaldehyde resin |
| CN103709600A (en) * | 2013-12-26 | 2014-04-09 | 苏州市涵信塑业有限公司 | Modified melamine formaldehyde resin composition |
| CN105086356A (en) * | 2014-05-22 | 2015-11-25 | 溧阳市乔森塑料有限公司 | Modified urea formaldehyde molding compound and preparation method thereof |
| CN106700415A (en) * | 2017-01-03 | 2017-05-24 | 浙江工业大学 | High-toughness melamine resin and preparing method thereof |
-
2017
- 2017-12-29 CN CN201711471727.8A patent/CN108084649A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589109A (en) * | 2013-11-08 | 2014-02-19 | 苏州市双赢包装材料有限公司 | Formula of reinforced melaminoformaldehyde resin |
| CN103709600A (en) * | 2013-12-26 | 2014-04-09 | 苏州市涵信塑业有限公司 | Modified melamine formaldehyde resin composition |
| CN105086356A (en) * | 2014-05-22 | 2015-11-25 | 溧阳市乔森塑料有限公司 | Modified urea formaldehyde molding compound and preparation method thereof |
| CN106700415A (en) * | 2017-01-03 | 2017-05-24 | 浙江工业大学 | High-toughness melamine resin and preparing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 汪多仁: "《现代高分子材料生产及应用手册》", 31 May 2002, 中国石化出版社 * |
| 王国建: "《多组分聚合物-原理、结构与性能》", 31 October 2013, 同济大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564135A (en) * | 2018-06-05 | 2019-12-13 | 苏州新益特塑胶科技有限公司 | Melamine formaldehyde plastic |
| CN109082071A (en) * | 2018-07-03 | 2018-12-25 | 东莞唛铂纳米科技有限公司 | The manufacturing process of anti-bacteria melamine material |
| CN109280330A (en) * | 2018-09-29 | 2019-01-29 | 福建亿鑫泰新型材料有限公司 | A kind of high tenacity melamine and preparation method thereof |
| CN109280330B (en) * | 2018-09-29 | 2021-05-07 | 福建亿鑫泰新型材料有限公司 | High-toughness melamine powder and preparation method thereof |
| WO2020087550A1 (en) * | 2018-10-31 | 2020-05-07 | 安徽绿之态新材料有限公司 | Cellulose/melamine formaldehyde composite resin and preparation method thereof |
| CN112143045A (en) * | 2020-10-14 | 2020-12-29 | 安徽昌悌进出口贸易有限公司 | Porcelain-like bottle and preparation method thereof |
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