CN110330761A - One kind exempting from painted plastic and preparation method thereof - Google Patents
One kind exempting from painted plastic and preparation method thereof Download PDFInfo
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- CN110330761A CN110330761A CN201910676404.5A CN201910676404A CN110330761A CN 110330761 A CN110330761 A CN 110330761A CN 201910676404 A CN201910676404 A CN 201910676404A CN 110330761 A CN110330761 A CN 110330761A
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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
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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
- C08J9/10—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 nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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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
- C08J9/10—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 nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
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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
- C08J9/10—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 nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/107—Nitroso compounds
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- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
- C08J2355/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
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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
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- C08J2433/20—Homopolymers or copolymers of acrylonitrile
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- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
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Abstract
The present invention discloses one kind and exempts from painted plastic and preparation method thereof.Wherein, this exempts from the ingredient that painted plastic includes following mass fraction: exempting from painted plastic comprising the ingredient of following mass fraction: 40-90 parts of ABS resin, 5-30 parts of AS resin, 1-10 parts of pearl powder, 0.5-10 parts of aluminum paste, 2-25 parts of mineral powder, 0.5-5 parts of dispersing agent, 0.5-10 parts of foaming agent, 2-10 parts of promoter for blowing agent, 0.3-5 parts of antioxidant, 0.2-2 parts of coupling agent.The present invention allows foaming agent to generate several micro-bubbles to make pearlescent flake and aluminum paste piece at disorderly arranged, to thoroughly eliminate or be greatly reduced the surface defects such as flow liner, weld bond or shade line using the outer surface for exempting from the plastic products that painted plastic is prepared by injection molding of the invention, good physical properties, and surface of plastic products can be allowed to generate the metal-like effect closer to spraying effect.
Description
Technical field
The present invention relates to field of compound material, exempt from painted plastic and preparation method thereof more particularly, to one kind.
Background technique
Traditional plastic shell is that appearance colour is formed on plastic shell by modes such as sprayings to allow the appearance of product
It is rich and varied.But spraying process is cumbersome and there are certain environmental pollutions.In recent years occur exempting from painted plastic, exempt from spraying modeling
Material is a kind of environment-friendly materials being widely noticed in recent years, realizes metallic by directly adding metal effect powder in the plastic
The aesthetic appearances such as sense, pearly-lustre flashing.Due to not having the use of coating, paint, ultralow volatility may be implemented completely to be had the material
The discharge of machine object (VOCS) and 100% MAT'L recycling, are real green materials.Meanwhile eliminating spraying work
The multiple link of skill, so that the manufacturing cost of product be greatly reduced, this has very strong attraction to industries such as household electrical appliances, automobiles
Power.
However, existing painted plastic of exempting from injection molding process, is easy to appear the flow liner for influencing product appearance, welding
The surface defects such as line or shade line.For example, as shown in Figure 1, existing one kind exempts from painted plastic passes through injecting glue in the molten state
Mouth injection moulding mold, pearl powder is easy to be formed with the flow direction of molten plastic using gum-injecting port as starting point during filling mold
To the ordered arrangement of product end, show that striped is wavy and light stream to single direction reflection light on the surface of product
The surface defects such as line, product surface are larger with spraying effect gap in visual effect.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of object
Reason function admirable exempts from painted plastic, and the surfaces such as flow liner will not be generated when exempting from painted plastic injection-molded plastic product using this and are lacked
It falls into, and surface of plastic products can be allowed to generate the metal-like effect closer to spraying effect.
The present invention also proposes that one kind exempts from painted plastic preparation method, simple process and strong operability.
The present invention discloses one kind and exempts from painted plastic comprising the ingredient of following mass fraction: 40-90 parts of ABS resin, AS tree
5-30 parts of rouge, 1-10 parts of pearl powder, 0.5-10 parts of aluminum paste, 2-25 parts of mineral powder, 0.5-5 parts of dispersing agent, foaming agent 0.5-10
Part, 2-10 parts of promoter for blowing agent, 0.3-5 parts of antioxidant, 0.2-2 parts of coupling agent.
In a preferred embodiment, described to exempt from the ingredient that painted plastic includes following mass fraction: 79 parts of ABS resin,
10 parts of AS resin, 3 parts of pearl powder, 0.5 part of aluminum paste, 5 parts of mineral powder, 1 part of dispersing agent, 1.5 parts of foaming agent, promoter for blowing agent 3
Part, 0.5 part of antioxidant and 0.5 part of coupling agent.
In a preferred embodiment, described to exempt from the ingredient that painted plastic includes following mass fraction: ABS resin 66.5
Part, 15 parts of AS resin, 2.5 parts of pearl powder, 0.6 part of aluminum paste, 7 parts of mineral powder, 2 parts of dispersing agent, 2 parts of foaming agent, foaming agent help
5 parts of agent, 0.5 part of antioxidant and 1 part of coupling agent.
In a preferred embodiment, foaming agent is nitrous base system foaming agent, inorganic salts foaming agent, azo foaming agent
And p-toluene sulfonylsemicarbazide is one such or in which several mixtures in any proportion.
In a preferred embodiment, promoter for blowing agent is EVA resin, PE resin or EVA resin and PE resin by any
The mixture of ratio.
In a preferred embodiment, mineral powder is silicates inorganic matter or Calcium carbonate inorganic matter.
In a preferred embodiment, pearl powder is that TiO2 coats mica sheet composition.
In a preferred embodiment, dispersing agent is pentaerythrite stearic acid, silicone auxiliary agent, organosilicon auxiliary agent and tree-shaped poly-
Amide-type aid is one such or in which several mixtures in any proportion.
The present invention discloses a kind of preparation method for exempting from painted plastic comprising step:
Pearl powder, aluminum paste, dispersing agent, antioxidant are uniformly mixed, dispersing agent and antioxidant is allowed to be well dispersed in
In pearl powder and aluminum paste, the coupling agent for adding ABS resin, AS resin, mineral powder and 60-90% is sufficiently mixed to obtain first
Mixture processes above-mentioned first mixture extruding pelletization to obtain the first granular materials；
Foaming agent, promoter for blowing agent and remaining coupling agent are obtained into the second mixture after mixing, by the second mixing
Material is processed to obtain the second granular materials by extruding pelletization；
Above-mentioned first granular materials and above-mentioned second granular materials are uniformly mixed and obtain exempting from painted plastic.
In a preferred embodiment, the first mixture passes through operating temperature of the double screw extruder at 180 DEG C -230 DEG C
Lower extruding pelletization is processed to obtain the first granular materials, and the second mixture is by double screw extruder or single screw extrusion machine 50
Extruding pelletization is processed to obtain the second granular materials under DEG C -100 DEG C of operating temperature.
The present invention solves by following technical spirit and " is also easy to produce the surface effect of the surface defects such as flow liner and plastic products
It is larger with spraying effect gap " technical problem:
1. the present invention adds pearl powder, aluminum paste in prescription to generate metal-like effect in surface of plastic products, and
Synergistic effect is generated in entire prescription to promote jointly by increasing foaming agent and dispersing agent, foaming agent and dispersing agent in prescription
The final technical purpose for realizing elimination product surface open defect of unordered flowing is generated into pearl powder, aluminum paste, compared to for list
For solely making to promote pearl powder, aluminum paste to generate disordered motion using foaming agent or dispersing agent, the present invention by foaming agent and
Dispersing agent matches, and collective effect exempts from painted plastic in pearl powder, aluminum paste with final acquisition, exempts from painted plastic using this and prepares
The surface of plastic product will not generate the surface defects such as flow liner, weld bond or shade line, and surface of plastic products can because
The ingredient generation metal-like effect of pearl powder, aluminum paste.
2. the present invention on the basis of using foaming agent and dispersing agent, adds AS resin in prescription, AS resin not only has
The logistics performances such as tensile strength raising, bending strength and the surface hardness for exempting from painted plastic conducive to promotion, wherein surface hardness mentions
10 degree of effects are risen to have scratch resistance performance；And AS resin generates synergistic work with foaming agent and dispersing agent in entire prescription
With promoting the glossiness of surface of plastic products up to 15 degree or more, the glossiness by improving surface of plastic products allows plastic products
Surface generates the metal-like effect closer to spraying effect.
In addition, the present invention is to improve the performance for exempting from painted plastic by increasing foaming agent, using opening in injection moulding process
Pressure change allows foaming agent to generate several micro-bubbles to make pearlescent flake and aluminum paste piece at disorderly arranged, to utilize when mold
Thoroughly eliminate or be greatly reduced stream in the outer surface for exempting from the plastic products that painted plastic is prepared by injection molding of the invention
The surface appearance defects such as line, weld bond or shade line, and the micro-bubble naked eyes that foaming agent generates are invisible without will affect modeling
The appearance of material products；Furthermore exempt from painted plastic in terms of tensile strength and bending strength by can be improved after increase foaming agent
Mechanical property and will not allow impact strength performance that material alterations occur, exempt from painted plastic using model to be conducive to expand
It encloses.
Furthermore the present invention obviously overcomes the problem that plastic products generate surface defect during the preparation process, plastics system is allowed
Product are not in surface defect to be conducive to improve production yield.Also, part ABS is replaced using mineral powder in prescription
Resin, and allow foaming agent to generate several micro-bubbles using pressure change when opening mold in injection moulding process by using foaming agent
Mitigate the weight of plastic products, to be conducive to raw material needed for saving plastic products to reduce cost and expand and exempt from spraying modeling
Expect use scope.
Detailed description of the invention
Fig. 1 is using a kind of existing schematic diagram for the products appearance for exempting from painted plastic injection molding, and outline border indicates injection molding
Molding product, several orderly horizontal stripes indicate that pearl powders are ordered in product surface in frame.
Fig. 2 is using the schematic diagram of the products appearance for exempting from painted plastic injection molding of the invention, and outline border expression is molded into
The product of type, several mixed and disorderly unordered stripeds indicate that pearlescent flakes and aluminum paste piece are disorderly arranged in product surface in frame.
Specific embodiment
Further to illustrate that the application is the technical means and efficacy reaching predetermined purpose and being taken, below in conjunction with attached drawing
And preferred embodiment, to specific embodiment, structure, feature and its effect according to the application, detailed description is as follows.Following
In explanation, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, in one or more embodiments
Special characteristic, structure or feature can be combined by any suitable form.
The present invention discloses one kind and exempts from painted plastic, using this exempt from painted plastic injection molding plastic products (and referred to as make
Product or product) not only there is good physical property, and the surface of plastic products will not generate flow liner, weld bond or shade line etc.
The surface defect for influencing appearance makes surface of plastic products generate the metal-like effect closer to spraying effect.
Specifically, this exempts from the ingredient that painted plastic includes following mass fraction: 40-90 parts of ABS resin, AS resin 5-30
Part, 1-10 parts of pearl powder, 0.5-10 parts of aluminum paste, 2-25 parts of mineral powder, 0.5-5 parts of dispersing agent, 0.5-10 parts of foaming agent, foaming
2-10 parts of agent aid, 0.3-5 parts of antioxidant, 0.2-2 parts of coupling agent.
ABS resin is the graft copolymer synthesized by 3 kinds of acrylonitrile, butadiene and styrene monomers, because it is with excellent
The performances such as impact, dimensional stability, chemically-resistant, be widely used in the row such as household electrical appliances, office appliance, electronic apparatus, automobile, packaging
Industry).
The scientific name of AS resin be acrylonitritrile-styrene resin (acrylonitrile-styrene copolymer) by
Acrylonitrile and it is styrene copolymerized made of high-molecular compound, general 15%-50% containing styrene.
Mineral powder is silicates inorganic matter or Calcium carbonate inorganic matter.
Pearl powder is also known as pearlescent pigment, is made of one or several kinds of thin layer of metal oxide cladding mica.Wherein, this hair
The bright pearl powder preferably constituted using TiO2 cladding mica sheet.
Aluminum paste (English name Aluminiumpaste, alias: aluminum paste, flash of light slurry, silver paste) is granularity in 10nm-
The paste pigment of 200nm, main component are snow flaky aluminum particle and petroleum solvent, have excellent luminous reflectanc and metal
Gloss is used in mixed way with transparent coloured pigments, and paint film has apparent " effect ", the very magnificent beauty of decorative effect
It sees, the imitative electroplating effect for exempting from painted plastic can be enhanced using aluminum paste.
Promoter for blowing agent be EVA resin or PE resin (polyvinyl resin) or EVA resin and PE resin in any proportion
Mixture.EVA resin is ethylene-vinyl acetate copolymer or ethene-vinyl acetate copolymer.
Antioxidant be antioxidant 1010, irgasfos 168, antioxidant 1076 it is one such or in which it is several in any proportion
Mixture.
Coupling agent is mineral oil or silicone oil.
Dispersing agent is pentaerythrite stearic acid, silicone auxiliary agent, organosilicon auxiliary agent and dendritic polyamide analog assistant therein one
Kind or in which several mixtures in any proportion.
Foaming agent be nitrous base system foaming agent, inorganic salts foaming agent (for example, calcium carbonate, magnesium carbonate or sodium bicarbonate),
Azo foaming agent (for example, azodicarbonamide, azobisisobutyronitrile, the even different heptonitrile of fluorine two, diisopropyl azodiformate,
Even fluorine dicarboxylic acids barium, diethylazodicarboxylate or azo amine benzene) and p-toluene sulfonylsemicarbazide it is one such or in which several
The mixture of kind in any proportion.
In addition, it is as follows to prepare the method disclosed by the invention for exempting from painted plastic: firstly, by above-mentioned number prepare it is various at
Point；Secondly, pearl powder, aluminum paste, dispersing agent and antioxidant are uniformly mixed, dispersing agent and antioxidant is allowed to be well dispersed in
In pearl powder and aluminum paste, when adding the coupling agent of ABS resin, AS resin, mineral powder and 60-90% and being mixed in batch mixer
Between be sufficiently mixed within 3-5 minutes to obtain the first mixture, by above-mentioned first mixture by double screw extruder 180 DEG C-
Extruding pelletization is processed to obtain the first granular materials under 230 DEG C of operating temperature；Again, using EVA resin or PE resin as foaming
Foaming agent, promoter for blowing agent and remaining coupling agent are obtained the second mixture after mixing, then mixed second by agent aid
Closing material, the extruding pelletization under 50 DEG C -100 DEG C of operating temperature processes to obtain the by double screw extruder or single screw extrusion machine
Two granular materials；Above-mentioned first granular materials and above-mentioned second granular materials are uniformly mixed and obtain blended particles, the blending
Grain is to exempt from painted plastic.
Embodiment 1
It takes 5 parts of 10 parts of pearl powder, 10 parts of aluminum paste, 5 parts of dispersing agent and antioxidant after mixing, adds ABS tree
Incorporation time 5 is divided in batch mixer for 90 parts of rouge, 30 parts of AS resin, 25 parts of mineral powder and 1.8 parts of coupling agent (totally 2 parts of coupling agent)
Clock, by double screw extruder, extruding pelletization is processed to obtain the first granular materials under 230 DEG C of operating temperature；Again, it will send out
0.2 part of 10 parts of infusion, 10 parts of promoter for blowing agent and coupling agent after mixing, then pass through work of the single screw extrusion machine at 80 DEG C
Extruding pelletization is processed to obtain the second granular materials at a temperature of work；Above-mentioned first granular materials and above-mentioned second granular materials are mixed
The blended particles obtained after uniformly, i.e., of the invention exempts from painted plastic.
Embodiment 2
It takes 0.3 part of 1 part of pearl powder, 0.5 part of aluminum paste, 0.5 part of dispersing agent and antioxidant after mixing, adds
When 40 parts of ABS resin, 5 parts of AS resin, 2 parts of mineral powder and 0.12 part of coupling agent (totally 0.2 part of coupling agent) mix in batch mixer
Between 3 minutes, by double screw extruder, extruding pelletization is processed to obtain the first granular materials under 180 DEG C of operating temperature；Again,
After mixing by 0.08 part of 0.5 part of foaming agent, 2 parts of promoter for blowing agent and coupling agent, then by single screw extrusion machine 100
DEG C operating temperature under extruding pelletization process to obtain the second granular materials；By above-mentioned first granular materials and above-mentioned second granular material
Expect the blended particles obtained after mixing, i.e., of the invention exempts from painted plastic.
Embodiment 3
It takes 0.5 part of 3 parts of pearl powder, 0.5 part of aluminum paste, 1 part of dispersing agent and antioxidant after mixing, adds ABS
79 parts of resin, 10 parts of AS resin, 5 parts of mineral powder and 0.4 part of coupling agent (totally 0.5 part of coupling agent) incorporation time 4 in batch mixer
Minute, by double screw extruder, extruding pelletization is processed to obtain the first granular materials under 200 DEG C of operating temperature；Again, will
0.1 part of 1.5 parts of foaming agent, 3 parts of promoter for blowing agent and coupling agent after mixing, then pass through single screw extrusion machine at 90 DEG C
Extruding pelletization is processed to obtain the second granular materials under operating temperature；Above-mentioned first granular materials and above-mentioned second granular materials are mixed
The blended particles obtained after closing uniformly, i.e., of the invention exempts from painted plastic.
Embodiment 4
It takes 0.5 part of 2.5 parts of pearl powder, 0.6 part of aluminum paste, 2 parts of dispersing agent and antioxidant after mixing, adds
When 66.5 parts of ABS resin, 15 parts of AS resin, 7 parts of mineral powder and 0.8 part of coupling agent (totally 1 part of coupling agent) mix in batch mixer
Between 4 minutes, by double screw extruder, extruding pelletization is processed to obtain the first granular materials under 220 DEG C of operating temperature；Again,
After mixing by 0.2 part of 2 parts of foaming agent, 5 parts of promoter for blowing agent and coupling agent, then by single screw extrusion machine at 95 DEG C
Extruding pelletization is processed to obtain the second granular materials under operating temperature；Above-mentioned first granular materials and above-mentioned second granular materials are mixed
The blended particles obtained after closing uniformly, i.e., of the invention exempts from painted plastic.
Embodiment 5
It takes 2 parts of 5 parts of pearl powder, 2 parts of aluminum paste, 4.5 parts of dispersing agent and antioxidant after mixing, adds ABS tree
Incorporation time 5 is divided in batch mixer for 85 parts of rouge, 25 parts of AS resin, 20 parts of mineral powder and 1.6 parts of coupling agent (totally 2 parts of coupling agent)
Clock, by double screw extruder, extruding pelletization is processed to obtain the first granular materials under 230 DEG C of operating temperature；Again, it will send out
0.4 part of 4 parts of infusion, 9 parts of promoter for blowing agent and coupling agent after mixing, then pass through work of the single screw extrusion machine at 85 DEG C
At a temperature of extruding pelletization process to obtain the second granular materials；Above-mentioned first granular materials and above-mentioned second granular materials are mixed equal
The blended particles obtained after even, i.e., of the invention exempts from painted plastic.
ABS resin is respectively adopted, several specifications are made using injection molding in the painted plastic of exempting from that embodiment 1-5 is obtained
20mmx10mmx3mm laboratory sample, using laboratory sample made from ABS resin as the contrast groups of embodiment 1-5.Wherein, it is molded
180-230 DEG C of the barrel temperature of machine, injection pressure 70MPa, injection speed 65%, 230 DEG C of hot-fluid channel temp.In addition, to each
Testing standard used by a laboratory sample is tested is as follows: test tensile strength (MPa) uses 527 standard of ISO, test
Bending strength (MPa) uses 178 standard of ISO, impact strength (KJ/m2) used voluntarily using 180 standard of ISO, surface defect
(i.e. the quality of laboratory sample made from embodiment 1-5 is opposite respectively to use ABS using voluntarily weighing comparison for range estimation, loss of weight ratio
The less percentage of the quality of laboratory sample made from resin).
Test result see the table below shown in 1:
Table 1
From the testing result of above-mentioned comparative experimental data it can be seen that 1. painted plastic disclosed by the invention of exempting from is made in injection molding
Flow liner, weld bond or shade line etc., which will not be generated, on the surface of product when standby product influences the surface defect of appearance, is conducive to
Improve production yield；2. painted plastic disclosed by the invention of exempting from improves stretching for the physical property of ABS resin substrate
Intensity and bending strength, and impact strength decreases, overall mechanical properties are preferable, substantially maintain ABS resin substrate
Physical characteristic expands the use scope for exempting from painted plastic；3. ABS resin can be reduced by increasing mineral powder in component
Usage amount, and by the weight of foaming agent generation bubble reduction product, it advantageously reduces cost of implementation and mitigates the weight of product.
Using of the invention when exempting from painted plastic using injection molding production plastic products, pearlescent flake and aluminum paste piece are unordered
Product surface is arranged in which single direction will not be formed, to avoid hardly generating flow liner, weld bond in product surface
Or shade line etc. influences the surface defect of appearance, as shown in Figure 2, wherein disorderly arranged bar 1 is sheet pearl powder or piece
The aluminum paste of shape, small circle or small oval circle indicate micro-bubble 2 between bar 1.This is because: the present invention is by exempting to spray
It applies in plastics and adds foaming agent, during injection molding machine moulded plastic products, the painted plastic of exempting from of melting flows to injection mould
In block, die sinking when mold mould cavity pressure die-off to cause foaming agent foam become release gas formed it is several small
Bubble, volume increases to destroy the regular arrangement of pearlescent flake and aluminum paste piece in these micro-bubble forming processes,
It arranges sheet pearl powder or the aluminum paste of sheet and the disorderly arranged of all directions is presented, so that the outer surface in plastic products disappears
Remove or reduce the surface appearance defects such as flow liner, weld bond or shade line.In addition, since foaming agent is meeting containing in material
Measure smaller, the micro-bubble limited amount of the formation and size of micro-bubble is very small, the almost invisible bubble of naked eyes, therefore will not
Abscess has been formed in the outer surface of plastic products and influences appearance.
Also, the realization mechanism for exempting from painted plastic of the invention is further done as described below:
1. inventors be surprised to learn that foaming agent and dispersing agent generate synergistic effect in entire prescription to collectively promote pearly-lustre
Powder, aluminum paste generate the final technical purpose for realizing elimination product surface open defect of unordered flowing, compared to for being used alone
Foaming agent or dispersing agent are come for making to promote pearl powder, aluminum paste to generate disordered motion, hence it is evident that improve and eliminate outside product surface
See the effect of defect.
By taking embodiment 3 as an example, dispersing agent and foaming agent are not added respectively or does not add dispersing agent, or do not add hair
Infusion is respectively as comparative test group.
79 parts of comparative test group 1:ABS resin, 10 parts of AS resin, 3 parts of pearl powder, 0.5 part of aluminum paste, mineral powder 5 part, point
0 part of powder, 0 part of foaming agent, 3 parts of promoter for blowing agent, 0.5 part of antioxidant and 0.5 part of coupling agent.
79 parts of comparative test group 2:ABS resin, 10 parts of AS resin, 3 parts of pearl powder, 0.5 part of aluminum paste, mineral powder 5 part, point
1 part of powder, 0 part of foaming agent, 3 parts of promoter for blowing agent, 0.5 part of antioxidant and 0.5 part of coupling agent.
79 parts of comparative test group 3:ABS resin, 10 parts of AS resin, 3 parts of pearl powder, 0.5 part of aluminum paste, mineral powder 5 part, point
0 part of powder, 1.5 parts of foaming agent, 3 parts of promoter for blowing agent, 0.5 part of antioxidant and 0.5 part of coupling agent.
Above-mentioned comparative test group 1-3 is prepared into hybrid particles as described in Example 3.Then, by embodiment 3, to having a competition
It tests group 1-3 and prepares hybrid particles and be utilized respectively injection molding (wherein, 180-230 DEG C of the barrel temperature of injection molding machine, injection pressure are
70MPa, injection speed 65%, 230 DEG C of hot-fluid channel temp), each laboratory sample for preparing 10 block specifications 20mmx10mmx3mm leads to
Cross to observe in each test specimen (is locally with the presence or absence of all (all referring to 50% area above of product surface is accounted for) or part
Finger accounts for 50% following region of product surface) there are the surface defects such as generation flow liner, weld bond or shade line, and count and lacked with surface
The quantity of sunken test specimen, test result are as shown in table 2 below.
Table 2
It was found from the test result shown in the table 2: when not adding dispersing agent and foaming agent, 10 test specimens can all go out
Existing surface defect.When only adding dispersing agent, although dispersing agent promotes aluminum paste and pearl powder in prescription to a certain extent
Flowing is generated, but not can guarantee and aluminum paste and pearl powder is allowed to be dispersed in prescription, finally there are 6 test specimens all to occur
Surface defect and locally there is surface defect in other 4 test specimens.When simple addition foaming agent, 50% test specimen cannot
Thoroughly prevent product surface and locally generates the surface defects such as flow liner, weld bond or shade line.But by further in prescription
Dispersing agent is added, aluminum paste and pearl powder is promoted to generate flowing in prescription using dispersing agent, enhances aluminium silver in injection moulding process
Slurry and pearl powder are dispersed in hot melting plastic, allow different component by point reached a uniformity effect, may finally
100% avoids locally occurring generating flow liner, weld bond or light and shade in product surface because aluminum paste and pearl powder dispersion are uneven
The surface defects such as line.
2. inventor has surprisingly been found that, added in prescription AS resin not only contribute to be promoted exempt from painted plastic stretching it is strong
Degree raising, bending strength and surface hardness, and AS resin and foaming agent and dispersing agent generate synergistic work in entire prescription
With promote the glossiness of product surface makes it closer to spraying effect with the metal effect texture on enhanced article surface.
Test is compared based on above-described embodiment 4.
Comparative test group 4 (benchmark group): 66.5 parts of ABS resin, 0 part of AS resin, 2.5 parts of pearl powder, 0.6 part of aluminum paste,
7 parts of mineral powder, 2 parts of dispersing agent, 2 parts of foaming agent, 5 parts of promoter for blowing agent, 0.5 part of antioxidant and 1 part of coupling agent.
66.5 parts of comparative test group 5:ABS resin, 5 parts of AS resin, 2.5 parts of pearl powder, 0.6 part of aluminum paste, mineral powder 7
Part, 2 parts of dispersing agent, 2 parts of foaming agent, 5 parts of promoter for blowing agent, 0.5 part of antioxidant and 1 part of coupling agent.
66.5 parts of comparative test group 6:ABS resin, 10 parts of AS resin, 2.5 parts of pearl powder, 0.6 part of aluminum paste, mineral powder 7
Part, 2 parts of dispersing agent, 2 parts of foaming agent, 5 parts of promoter for blowing agent, 0.5 part of antioxidant and 1 part of coupling agent.
Comparative test group 7 (embodiment 4): 66.5 parts of ABS resin, 10 parts of AS resin, 2.5 parts of pearl powder, aluminum paste 0.6
Part, 7 parts of mineral powder, 2 parts of dispersing agent, 2 parts of foaming agent, 5 parts of promoter for blowing agent, 0.5 part of antioxidant and 1 part of coupling agent.
Above-mentioned comparative test group 4-7 prepares hybrid particles according to above-described embodiment 4, is then utilized respectively injection molding
(wherein, 180-230 DEG C of the barrel temperature of injection molding machine, injection pressure 70MPa, injection speed 65%, 230 DEG C of hot-fluid channel temp)
To prepare the laboratory sample of specification 20mmx10mmx3mm respectively.The stretching of the test specimen of the corresponding each comparative test group of test
Intensity (MPa), bending strength (MPa), impact strength (KJ/m2), (glossiness is adopted for surface hardness changing value and glossiness changing value
It is tested with universal 60 ° of glossometers).Wherein, using comparative test group 4 as benchmark group, surface hardness changing value and glossiness become
Change value is the changing value of test comparison test group 5-7 relative contrast test group 4.Wherein, surface hardness is using Holland
The Vickers FALCON500 that INNOVATEST company generates completes test.Test result is as follows shown in table 3.
Table 3
As can be seen from Table 3: after 1. increasing AS resin in prescription, with the increase of AS resin number, tensile strength is mentioned
High and bending strength mutually accordingly increases, and impact strength accordingly decreases；2., can after increasing AS resin in prescription
The superficial hardness number of test specimen is increased by 10 degree or so, thus improve scratch resistance performance make the surface of plastic products be not easy by
It scratches；3. significantly improving the surface brightness or glossiness of test specimen after increasing AS resin in prescription, glossiness can be mentioned
High 15 degree or more, being conducive to the metal effect texture of reinforced plastics product surface visually makes it closer to spraying effect.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within mind and principle.
Claims (10)
1. one kind exempts from painted plastic, which is characterized in that the ingredient including following mass fraction: 40-90 parts of ABS resin, AS resin
5-30 parts, 1-10 parts of pearl powder, 0.5-10 parts of aluminum paste, 2-25 parts of mineral powder, 0.5-5 parts of dispersing agent, 0.5-10 parts of foaming agent,
2-10 parts of promoter for blowing agent, 0.3-5 parts of antioxidant, 0.2-2 parts of coupling agent.
2. exempting from painted plastic according to claim 1, which is characterized in that the ingredient including following mass fraction: ABS resin 79
Part, 10 parts of AS resin, 3 parts of pearl powder, 0.5 part of aluminum paste, 5 parts of mineral powder, 1 part of dispersing agent, 1.5 parts of foaming agent, foaming agent help
3 parts of agent, 0.5 part of antioxidant and 0.5 part of coupling agent.
3. exempting from painted plastic according to claim 1, which is characterized in that the ingredient including following mass fraction: ABS resin
66.5 parts, 15 parts of AS resin, 2.5 parts of pearl powder, 0.6 part of aluminum paste, 7 parts of mineral powder, 2 parts of dispersing agent, 2 parts of foaming agent, foaming
5 parts of agent aid, 0.5 part of antioxidant and 1 part of coupling agent.
4. exempting from painted plastic described according to claim 1 or 2 or 3, which is characterized in that foaming agent is nitrous base system foaming agent, nothing
Machine salt foaming agent, azo foaming agent and p-toluene sulfonylsemicarbazide is one such or in which several in any proportion mixed
Close object.
5. exempting from painted plastic described according to claim 1 or 2 or 3, which is characterized in that promoter for blowing agent is EVA resin, PE resin
Or EVA resin and the mixture of PE resin in any proportion.
6. exempting from painted plastic described according to claim 1 or 2 or 3, which is characterized in that mineral powder is silicates inorganic matter or carbon
Sour calcium class inorganic matter.
7. exempting from painted plastic described according to claim 1 or 2 or 3, which is characterized in that pearl powder is that TiO2 coats mica sheet structure
At.
8. exempting from painted plastic described according to claim 1 or 2 or 3, which is characterized in that dispersing agent is pentaerythrite stearic acid, silicon
Ketone auxiliary agent, organosilicon auxiliary agent and dendritic polyamide analog assistant is one such or in which several mixtures in any proportion.
9. a kind of preparation method for exempting from painted plastic as described in claim 1-8 any one, which is characterized in that comprising steps of
Pearl powder, aluminum paste, dispersing agent, antioxidant are uniformly mixed, dispersing agent and antioxidant is allowed to be well dispersed in pearly-lustre
In powder and aluminum paste, the coupling agent for adding ABS resin, AS resin, mineral powder and 60-90% is sufficiently mixed to obtain the first mixing
Material, processes above-mentioned first mixture extruding pelletization to obtain the first granular materials；
Foaming agent, promoter for blowing agent and remaining coupling agent are obtained into the second mixture after mixing, the second mixture is led to
Extruding pelletization is crossed to process to obtain the second granular materials；
Above-mentioned first granular materials and above-mentioned second granular materials are uniformly mixed and obtain exempting from painted plastic.
10. exempting from the preparation method of painted plastic according to claim 9, which is characterized in that the first mixture passes through twin-screw
Extruder extruding pelletization under 180 DEG C -230 DEG C of operating temperature is processed to obtain the first granular materials, and the second mixture passes through double
Screw extruder or the single screw extrusion machine extruding pelletization under 50 DEG C -100 DEG C of operating temperature are processed to obtain the second granular materials.
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| CN104845014A (en) * | 2015-04-22 | 2015-08-19 | 蔡勤勤 | High-liquidity, high-heat resistance and good-surface appearance metal-like or pearlescent free-spraying ABS material and preparation method thereof |
| CN105037929A (en) * | 2015-07-02 | 2015-11-11 | 南京聚隆科技股份有限公司 | High-surface quality and lightweight spray-free polypropylene material and preparation method thereof |
| CN108559241A (en) * | 2018-03-29 | 2018-09-21 | 深圳市富恒新材料股份有限公司 | A kind of injection grade has the preparation method of metal-like, foaming, delustring PC/ABS alloy materials |
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