CN105968683A - Strip-shaped aluminum pigment with smooth surface and few flow marks - Google Patents

Strip-shaped aluminum pigment with smooth surface and few flow marks Download PDF

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Publication number
CN105968683A
CN105968683A CN201610594818.XA CN201610594818A CN105968683A CN 105968683 A CN105968683 A CN 105968683A CN 201610594818 A CN201610594818 A CN 201610594818A CN 105968683 A CN105968683 A CN 105968683A
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CN
China
Prior art keywords
parts
smooth
dehydrated alcohol
add
aluminum pigment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610594818.XA
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Chinese (zh)
Inventor
董前年
徐俊军
徐曈曈
周涛
朱双单
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HEFEI SUNRISE ALUMINIUM PIGMENTS Co Ltd
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HEFEI SUNRISE ALUMINIUM PIGMENTS Co Ltd
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Application filed by HEFEI SUNRISE ALUMINIUM PIGMENTS Co Ltd filed Critical HEFEI SUNRISE ALUMINIUM PIGMENTS Co Ltd
Priority to CN201610594818.XA priority Critical patent/CN105968683A/en
Publication of CN105968683A publication Critical patent/CN105968683A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/10Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to inorganic materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F292/00Macromolecular compounds obtained by polymerising monomers on to inorganic materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention discloses a strip-shaped aluminum pigment with a smooth surface and few flow marks. The pigment is prepared from, by weight, 70-75 parts of sheet aluminum powder, 14-15 parts of methacryloxy propyl trimethoxyl silane, an appropriate amount of absolute ethyl alcohol, 28-30 parts of trimethylolpropane triacrylate, 1.1-1.2 parts of crylic acid, 0.09-0.1 part of azodiisobutyronitrile, 1.75-1.9 parts of polyvinylpyrrolidone, 4-4.5 parts of ethylene bistearic amide, 19-20 parts of polyethylene, 2-3 parts of hydrotalcite, 2-3 parts of polytetrafluoroethylene particles, 2-3 parts of organobentonite, 0.8-1 part of silicone oil, an appropriate amount of deionized water and 0.8-1 part of polyvinyl alcohol. The prepared product has the smooth surface and has no flow mark, the defect that flow marks are produced in the plastic part molding process is reduced, the plastic part performance is improved, industrial control over the whole technological process is convenient, the pigment is safe, and no solvent is adopted.

Description

A kind of strip aluminum pigment of the few current mark of smooth surface
Technical field
The present invention relates to pigment technology field, particularly relate to the strip aluminum pigment of the few current mark of a kind of smooth surface.
Background technology
Aluminum pigment is also known as aluminum paste, aluminum argentum powder, flake aluminum, and it has smooth and very thin sclay texture, is to apply one of most metallic effect pigments.Aluminum pigment possesses good antiseptic property, moreover it is possible to reflection visible ray, has argenteous metallic luster, is also changing, so aluminum pigment has good decorative effect along with the intensity of the light of the different reflections of angle simultaneously;Aluminum pigment also can reflect infrared light and ultraviolet light, thus also have heat-insulating property and delay the effect of coating and rubber and ageing of plastics.Along with country and the raising of social concerns degree, low-carbon (LC) is the most no longer a concept with the topic of environmental protection, but has been converted into out and out action.Along with material and the development of mould process, exempting to spray the new trend becoming modified plastics development, resin is directly molded into part can meet the effect that the manufacturers such as dumb light, high light or flaring pearlescent require.Eliminate the technique sprayed paint, just eliminate the injury to environment, and greatly reduce manufacturing cost.Household electrical appliances, automobile, the application of electronic product industry working of plastics complete by hand generally by workman, along with level of consumption and the raising of price, while household electrical appliances product profit drastically reduces, wage sharp rises, but the rising of recruitment cost has become enterprise and has been difficult to undertake the burden that must be born by again.Preparation has pearl effect, the plastic material of metal-like is directly used in the machine-shaping of household electrical appliances plastics appearance member and can reduce environmental pollution, improve product appearance class, reduce product cost, improves product competitiveness.So the aluminum pigment that preparation is directly used in resin injection is particularly important, the application in plastic industry of the aluminum pigment is increasingly praised highly.
Patent " a kind of strip aluminum pigment and preparation method thereof " is then extruded with high molecular polymer and auxiliary agent by conventional aluminium pigment is carried out filter pressing, obtain the aluminum pigment of strip, obtained aluminum pigment the most easily disperses, without dust, versatility is good, current mark can be greatly reduced during plastic shaping, solve aluminum pigment bad scattered difficult problem in resin, but resin is through high temperature melting twin screw again or Single screw extrusion with aluminum pigment and auxiliary agent, owing to when extrusion or injection, temperature is the highest, the easy variable color of aluminum pigment or oxidation under high temperature, so that surface of the work metallochrome is dimmed, this heat stability being accomplished by being improved aluminium powder by modification, reduce the corrosivity of aluminum pigment.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that the strip aluminum pigment of the few current mark of a kind of smooth surface.
The present invention is achieved by the following technical solutions:
The strip aluminum pigment of the few current mark of a kind of smooth surface, is prepared by the raw materials in: flake aluminum 70-75, methacryloxypropyl trimethoxy silane 14-15, dehydrated alcohol are appropriate, trimethylolpropane trimethacrylate 28-30, acrylic acid 1-1-1.2, azodiisobutyronitrile 0.09-0.1, polyvinylpyrrolidone 1.75-1.9, ethylene bis stearamide 4-4.5, polyethylene 19-20, brucite 2-3, polytetrafluoroethylgranule granule 2-3, organobentonite 2-3, silicone oil 0.8-1, deionized water are appropriate, polyvinyl alcohol 0.8-1.
The strip aluminum pigment of the few current mark of described a kind of smooth surface, is made up of step in detail below:
(1) by the dehydrated alcohol of molten for methacryloxypropyl trimethoxy silane 4-5 times amount, being subsequently adding flake aluminum, be heated to 55-60 DEG C, after reacting 1-1.5 hour with absolute ethanol washing for several times, vacuum drying obtains coupling modifier aluminium powder;
(2) coupling modifier aluminium powder will add the dehydrated alcohol of 2-3 times amount; put in reactor; add trimethylolpropane trimethacrylate, acrylic acid while stirring and be dissolved in the polyvinylpyrrolidone of equivalent dehydrated alcohol; it is heated to 70-80 DEG C under nitrogen protection; then constant temperature dropping azodiisobutyronitrile; then rise to 85 DEG C react 30-40 minute; question response is further continued for stirring 50-60 minute after terminating; natural cooling; centrifugation; obtain filter cake, finally filter cake is put into and rotary evaporator evaporates dehydrated alcohol, obtain being grafted aluminium powder;
(3) brucite is mixed with organobentonite, add the deionized water of total amount 3-4 times, add polyvinyl alcohol, be heated to 60-70 DEG C, stir 30-40 minute with the speed of 800-1000 rev/min, be then spray-dried, obtain mixed powder;Just polyethylene is heated to melting, and puts in batch mixer with above-mentioned mixed powder, polytetrafluoroethylgranule granule, mixes 5-7 minute with the speed of 1000-1200 rev/min, discharging, broken, obtains modified additive;
(4) modified additive that grafting aluminium powder step (2) obtained obtains with step (3) mixes, continuously add remaining residual components, put into extruded shape growth 3-5mm, the cylinder of a diameter of 1-2mm in double screw extruder, control extrusion temperature and be 90-120 DEG C, be finally vacuum dried 5-6 hour at 50-60 DEG C and get final product.
The invention have the advantage that the present invention first passes through methacryloxypropyl trimethoxy silane and flake aluminum is carried out coupling, making flake aluminum surface conversion is lipophile, it is allowed to preferably mix with oiliness monomer, to carry out home position polymerization reaction at particle surface, then it is polymerized by in-situ solution and trimethylolpropane trimethacrylate is coated on flake aluminum surface, clad is uniform and thin, serve the effect increasing interparticle repulsive forces, be equivalent to the effect of dispersant, improve the dispersive property of aluminium powder, aluminium powder and air can be intercepted simultaneously, moisture directly contacts, further increase the decay resistance of aluminium powder and keep the activity of aluminium powder, aluminium powder heat stability after cladding is greatly improved simultaneously.
Brucite and organobentonite are added in interpolation auxiliary agent by surface modification by the present invention, it is possible to increase the processing characteristics of aluminum pigment, substantially increase the product tack on plastic material surface, and raising is known clearly dispersion effect and rheological performance;The product surface that the present invention makes is smooth, without current mark, the current mark defect produced during decreasing forming plastic pieces, improve the performance of plastic parts, and whole technical process be easy to Industry Control, safety is the most solvent-free.
Detailed description of the invention
The strip aluminum pigment of the few current mark of a kind of smooth surface, is made up of the raw material of following weight portion (kilogram): flake aluminum 70, methacryloxypropyl trimethoxy silane 14, dehydrated alcohol are appropriate, trimethylolpropane trimethacrylate 28, acrylic acid 1, azodiisobutyronitrile 0.09, polyvinylpyrrolidone 1.75, ethylene bis stearamide 4, polyethylene 19, brucite 2, polytetrafluoroethylgranule granule 2, organobentonite 2, silicone oil 0.8, deionized water are appropriate, polyvinyl alcohol 0.8.
The strip aluminum pigment of the few current mark of described a kind of smooth surface, is made up of step in detail below:
(1) by the dehydrated alcohol of molten for methacryloxypropyl trimethoxy silane 4 times amount, being subsequently adding flake aluminum, be heated to 55 DEG C, after reacting 1 hour with absolute ethanol washing for several times, vacuum drying obtains coupling modifier aluminium powder;
(2) coupling modifier aluminium powder will add the dehydrated alcohol of 2 times amount; put in reactor; add trimethylolpropane trimethacrylate, acrylic acid while stirring and be dissolved in the polyvinylpyrrolidone of equivalent dehydrated alcohol; it is heated to 70 DEG C under nitrogen protection; then constant temperature dropping azodiisobutyronitrile; then rise to 85 DEG C react 30 minutes; question response is further continued for after terminating stirring 50 minutes; natural cooling; centrifugation; obtain filter cake, finally filter cake is put into and rotary evaporator evaporates dehydrated alcohol, obtain being grafted aluminium powder;
(3) brucite is mixed with organobentonite, add the deionized water of total amount 3 times, add polyvinyl alcohol, be heated to 60 DEG C, stir 30 minutes with the speed of 800 revs/min, be then spray-dried, obtain mixed powder;Just polyethylene is heated to melting, and puts in batch mixer with above-mentioned mixed powder, polytetrafluoroethylgranule granule, mixes 5 minutes with the speed of 1000 revs/min, discharging, obtains modified additive;
(4) modified additive that grafting aluminium powder step (2) obtained obtains with step (3) mixes, continuously add remaining residual components, put into extruded shape growth 3mm, the cylinder of a diameter of 1mm in double screw extruder, controlling extrusion temperature is 120 DEG C, is finally vacuum dried 5 hours at 50 DEG C and get final product.
Through overtesting, product surface of the present invention is smooth, free from admixture, achromic point mottle, and heatproof is more than 250 DEG C, and the dispersibility in plastics or rubber product is good, exempts from spraying moulding surfacing, without current mark, the easy demoulding with what it was made.

Claims (2)

1. the strip aluminum pigment of the few current mark of smooth surface, it is characterized in that, be prepared by the raw materials in: flake aluminum 70-75, methacryloxypropyl trimethoxy silane 14-15, dehydrated alcohol are appropriate, trimethylolpropane trimethacrylate 28-30, acrylic acid 1-1-1.2, azodiisobutyronitrile 0.09-0.1, polyvinylpyrrolidone 1.75-1.9, ethylene bis stearamide 4-4.5, polyethylene 19-20, brucite 2-3, polytetrafluoroethylgranule granule 2-3, organobentonite 2-3, silicone oil 0.8-1, deionized water are appropriate, polyvinyl alcohol 0.8-1.
The strip aluminum pigment of the few current mark of a kind of smooth surface, it is characterised in that be made up of step in detail below:
(1) by the dehydrated alcohol of molten for methacryloxypropyl trimethoxy silane 4-5 times amount, being subsequently adding flake aluminum, be heated to 55-60 DEG C, after reacting 1-1.5 hour with absolute ethanol washing for several times, vacuum drying obtains coupling modifier aluminium powder;
(2) coupling modifier aluminium powder will add the dehydrated alcohol of 2-3 times amount; put in reactor; add trimethylolpropane trimethacrylate, acrylic acid while stirring and be dissolved in the polyvinylpyrrolidone of equivalent dehydrated alcohol; it is heated to 70-80 DEG C under nitrogen protection; then constant temperature dropping azodiisobutyronitrile; then rise to 85 DEG C react 30-40 minute; question response is further continued for stirring 50-60 minute after terminating; natural cooling; centrifugation; obtain filter cake, finally filter cake is put into and rotary evaporator evaporates dehydrated alcohol, obtain being grafted aluminium powder;
(3) brucite is mixed with organobentonite, add the deionized water of total amount 3-4 times, add polyvinyl alcohol, be heated to 60-70 DEG C, stir 30-40 minute with the speed of 800-1000 rev/min, be then spray-dried, obtain mixed powder;Just polyethylene is heated to melting, and puts in batch mixer with above-mentioned mixed powder, polytetrafluoroethylgranule granule, mixes 5-7 minute with the speed of 1000-1200 rev/min, discharging, broken, obtains modified additive;
(4) modified additive that grafting aluminium powder step (2) obtained obtains with step (3) mixes, continuously add remaining residual components, put into extruded shape growth 3-5mm, the cylinder of a diameter of 1-2mm in double screw extruder, control extrusion temperature and be 90-120 DEG C, be finally vacuum dried 5-6 hour at 50-60 DEG C and get final product.
CN201610594818.XA 2016-07-27 2016-07-27 Strip-shaped aluminum pigment with smooth surface and few flow marks Pending CN105968683A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN105968683A true CN105968683A (en) 2016-09-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107629296A (en) * 2017-10-18 2018-01-26 安徽天易金属新材料有限公司 A kind of plastic cement low current mark aluminium pigment and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102604445A (en) * 2012-02-15 2012-07-25 合肥旭阳铝颜料有限公司 Preparation method of aluminum pigment with high voltage breakdown resistance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102604445A (en) * 2012-02-15 2012-07-25 合肥旭阳铝颜料有限公司 Preparation method of aluminum pigment with high voltage breakdown resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107629296A (en) * 2017-10-18 2018-01-26 安徽天易金属新材料有限公司 A kind of plastic cement low current mark aluminium pigment and preparation method thereof
CN107629296B (en) * 2017-10-18 2020-06-26 安徽天易金属新材料有限公司 Low-flow-mark aluminum pigment for plastics and preparation method thereof

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Application publication date: 20160928