CN109721839A - Low linear expansion coefficient PP composite material of a kind of high glaze and preparation method thereof - Google Patents
Low linear expansion coefficient PP composite material of a kind of high glaze and preparation method thereof Download PDFInfo
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- CN109721839A CN109721839A CN201811614238.8A CN201811614238A CN109721839A CN 109721839 A CN109721839 A CN 109721839A CN 201811614238 A CN201811614238 A CN 201811614238A CN 109721839 A CN109721839 A CN 109721839A
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- expansion coefficient
- linear expansion
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Abstract
The present invention relates to technical field of polymer materials, in particular to low linear expansion coefficient PP composite material of a kind of high glaze and preparation method thereof, wherein composite material by the raw material of mass fraction by being formed below: 70-80 parts of polypropylene；0-0.5 parts of nucleating agent；1-1.5 parts of brightener；15-20 parts of filler；0.1-0.3 parts of antioxidant；0.1-0.3 parts of lubricant；0-1 parts of antibacterial agent；The mineral-filled object is whisker, mica, nano montmorillonite composition；Wherein whisker is made of calcium carbonate crystal whisker, magnesium sulfate crystal whisker, basalt whisker.A kind of low linear expansion coefficient PP composite material of high glaze provided by the invention, material glossiness is high, polypropylene material linear expansion coefficient can be effectively reduced, and material has both anti-microbial property, it can solve polypropylene material in life simultaneously and shrink serious phenomenon caused by crystallizing because after, there is important Practical Benefit.
Description
Technical field
The present invention relates to technical field of polymer materials, in particular to the low linear expansion coefficient polypropylene of a kind of high glaze is multiple
Condensation material and preparation method thereof.
Background technique
For acrylic resin raw material because comprehensive mechanical property is good, heat resisting temperature is high, electrical insulating property and steady to the chemistry of soda acid
It is fixed excellent, the features such as window is wide in range and cheap is produced and processed, it is made to be widely used in automotive part, household items, electricity
The fields such as sub- electric appliance.However, linear expansion coefficient is higher by (9.05 × 10 since its glossiness is relatively low (80 or so)-5/ K) and
Itself does not have antibacterial effect, causes it to have received limit value in the application in certain fields, low-luster causes it in certain colors
Demanding field of household appliances such as washing machine, Intelligent toilet cover in pool etc. can not cover, and linear expansion coefficient is higher, cause its
When producing the big product of certain automobiles (such as bumper, door-plate), product occurs in various degree because of the variation of ambient temperature
Contraction, cause it short slab occur in application aspect.In addition, the raising with the mankind to health requirements, the enhancing of antibacterial consciousness
Also can be more and more obvious, and the not antibiotic property of polypropylene material itself also will receive the worry of consumer, lead to that it applies by
Limit.
About the preparation method of high-gloss polypropylene, related patent proposes some solutions, patent
CN104693602A provide it is a kind of it is high flowing, high glaze chromatic metallic pearl effect exempt from the system of spray coating polypropylene automotive material
Preparation Method, but the excessive addition of its metal powder, pearl powder can seriously affect material mechanical performance, while can be because pile of grounds manufacture
The defects of at weld mark, about the polyacrylic preparation method of low linear expansion coefficient, patent CN106317607A provides one kind
Ultralow linear expansion coefficient PP composite material and preparation method thereof, but its inorganic filler Sc for using2W3O12With valence
The features such as lattice are expensive causes its application limited.
How to obtain a kind of high glaze, low linear expansion coefficient, antibacterial PP composite material, be the invention solves
Main problem.
Summary of the invention
To solve the problems in above-mentioned background technique, it is multiple that the present invention provides a kind of low linear expansion coefficient polypropylene of high glaze
Condensation material is made of the raw material of following mass fraction:
The mineral-filled object is whisker, mica, nano montmorillonite composition；Wherein whisker is by calcium carbonate crystal whisker, sulfuric acid
The composition of magnesium whisker, basalt whisker.
Further, the mineral-filled object is whisker, mica, nano montmorillonite according to 1:1:(1-2) it is composed；Institute
It states in whisker, calcium carbonate crystal whisker, magnesium sulfate crystal whisker and basalt whisker are formed according to 1:1:1 ratio.
Wherein, the form of whisker is small acicular texture, in material internal disorder distribution, forms packed structures, can be with
The linear expansion coefficient of polypropylene material is greatly lowered, and does not influence the apparent and glossiness situation of material.
Further, the polypropylene is one of homopolypropylene, copolymer polypropylene or at least two combinations.
Further, the nucleating agent is alpha-crystal form nucleating agent, dibenzal sorbitol class and its derivative, aryl phosphate ester
One kind of salt and substituted benzoic acid aluminium salt class or at least two combinations, wherein the effect of nucleating agent is that promote material to be formed spherical
Crystallization, improves the surface brightness of material, while reducing the usage amount of brightener.
Further, the brightener is one of benzylideneacetone, nonylphenol polyoxyethylene ether, sodium benzoate or at least
Two kinds of combinations；Brightener can uniformly be distributed to surface after heating during plastics-production, and plastics can be promoted to squeeze
The surface that modeling comes out is very smooth, while decreasing the abrasion of machine, increases the service life of machine.
Further, the antioxidant is in Hinered phenols antioxidant, sulphur ester antioxidant and sub- acid ester salt kind antioxidant
One kind or at least two combination.
Further, the lubricant be N, N '-ethylene bis stearamide, polyethylene wax, polypropylene wax, calcium stearate,
One of zinc stearate and magnesium stearate or at least two combinations.
Further, the antibacterial agent is silver ion class antibacterial agent, zinc oxide, copper oxide, ammonium dihydrogen phosphate, lithium carbonate etc.
One of inorganic antiseptic or at least two combinations.
The present invention also provides a kind of low linear expansion coefficient PP composite material of high glaze the preparation method comprises the following steps:
Step a, polypropylene is weighed by weight percentage, nucleating agent, brightener, mineral-filled, antioxidant, lubricant, is resisted
Microbial inoculum；
Step b, all materials in step a are added to progress high-speed stirred in high-speed mixer to be uniformly mixed, are obtained pre-
Mixing；
Step c, parallel double-screw extruder is added from main feeding hopper in the premix for obtaining step b, makes all components object
Material carries out shear melting blending extrusion in parallel double-screw extruder；
Step d, cooling, the dry, pelletizing by the material strip come out through parallel double-screw extruder mouth mold, obtains the low line of high glaze
Property coefficient of expansion PP composite material.
Further, the double screw extruder processing temperature is 170-230 DEG C.
The low linear expansion coefficient PP composite material of high glaze provided by the invention compared with prior art, have with
Under effect:
(1) present invention is used in compounding to improve polypropylene material because filling number increase is led by nucleating agent, brightener
The glossiness of cause declines situation；
(2) the higher phenomenon of polypropylene material linear expansion coefficient is reduced using nano-compound modified method, is arrived using small
Special effects after nano-scale, are distributed in polymer, by the cooperation of nano montmorillonite and whisker, not only to polypropylene tree
Rouge plays humidification, moreover it is possible to substantially reduce the linear expansion coefficient of material.
(3) present invention is by antibacterial modified, so that material itself has antibacterial effect.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
The present invention also provides the formulas (unit: parts by weight) of following embodiment and comparative example, as shown in the table:
Table 1
Wherein, in embodiment 1,2,3,4, the filler is nano montmorillonite, mica and whisker, and the whisker is carbonic acid
Calcium pyroborate, magnesium sulfate crystal whisker, basalt whisker are compounded according to 1:1:1 ratio, and filler described in comparative example 2 is carbonic acid
Calcium is only nano montmorillonite in comparative example 3.
In each comparative example, embodiment, used polypropylene is homopolypropylene.
Selected lubricant is calcium stearate in each comparative example, embodiment, and selected antioxidant is hindered phenol
Kind antioxidant 1010.
Nucleating agent employed in embodiment is alpha-crystal form nucleating agent, and used brightener is benzylideneacetone brightener
The antibacterial agent that embodiment 1,2 uses is zinc oxide, and the antibacterial agent used in embodiment 3,4 is zinc oxide.
According to the embodiment and comparative example in table 1 to be weighed to all raw materials according to the proportion；
All materials are added to progress high-speed stirred in high-speed mixer to be uniformly mixed, obtain premix；
Parallel double-screw extruder is added from main feeding hopper in premix, squeezes out all components material in parallel double-screw
Shear melting blending extrusion is carried out in machine；
Again by the material strip come out through parallel double-screw extruder mouth mold cooling, dry, pelletizing to get corresponding embodiment and right
The sample of ratio.
Wherein, the double screw extruder processing temperature is 170-230 DEG C.
Composite sample obtained above is subjected to following performance test:
Antibacterial test is tested by chinese national standard QB/T 2591-2003, respectively measure polypropylene bulk material and
Antibacterial effect after antibacterial agent is added
Glossiness test method is tested according to plastics gloss standard GB8807-88CS-380, after luminosity meter calibrating
The colour table gone out done in comparative example and embodiment is tested respectively, the final conclusion linear expansion coefficient that must locate is marked according to country
Quasi- GB/T 1036-2008 is tested, the linear expansion coefficient of sample in difference test comparison example and embodiment, by comparing,
It draws a conclusion.
Test result is as follows shown in table:
Table 2
By embodiment 1,2,3,4 and comparative example 1,2 as can be seen that utilizing silver, zinc etc. by adding antibacterial agent to material
The metals such as silver, copper, zinc (or its ion) are fixed on fluorine by the methods of physical absorption ion exchange by the antibacterial ability of metal
Antibacterial agent is made in the surface of the porous materials such as stone, silica gel, is then added into corresponding product, so that obtaining has antibacterial
The material of ability meets requirement of the country to antibacterial standard, increases the application range of PP.
Through embodiment 1,2,3,4 and comparative example 1,2 as can be seen that for linear expansion coefficient, normal PP-T20
Linear expansion coefficient be 8.28 × 10-5/ K, and nano-compound modified method is used, using nano montmorillonite, mica and mixing
The mixing of whisker three's different proportion can be down to 5 × 10 for its linear expansion coefficient is minimum-5/ K, fall reach 39.6%, energy
It is enough largely improve PP material because linear expansion coefficient is higher solve the four seasons alternating when size wild effect that occurs.
Through embodiment 3,4 as can be seen that in the case where nucleating agent, brightener sum are constant, the raising side of glossiness
Face, the two brightener in proportion: effect when nucleating agent=2:1 compounding effect is individually added into significantly better than brightener, by
It can promote material internal rapid crystallization in nucleating agent used, keep the brightness for increasing material entirety while material property, then
Brightener is added to be used in combination, so that brightener is uniformly distributed to frosting by heating during plastics-production,
Achieve the effect that improve surface gloss.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of low linear expansion coefficient PP composite material of high glaze, which is characterized in that by the raw material of following mass fraction
Composition:
The mineral-filled object is whisker, mica, nano montmorillonite composition；Wherein whisker is brilliant by calcium carbonate crystal whisker, magnesium sulfate
The composition of palpus, basalt whisker.
2. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: the mine
Object filler is whisker, mica, nano montmorillonite according to 1:1:(1-2) it is composed；In the whisker, calcium carbonate crystal whisker, sulphur
Sour magnesium whisker and basalt whisker are formed according to 1:1:1 ratio.
3. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: described poly-
Propylene is one of homopolypropylene, copolymer polypropylene or at least two mixing.
4. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: it is described at
Core agent is alpha-crystal form nucleating agent, dibenzal sorbitol class and its derivative, aryl phosphate ester salt and substituted benzoic acid aluminium salt class
A kind of or at least two combinations.
5. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: the light
Bright dose is one of benzylideneacetone, nonylphenol polyoxyethylene ether, sodium benzoate or at least two combinations.
6. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: described anti-
Oxygen agent is one of Hinered phenols antioxidant, sulphur ester antioxidant and sub- acid ester salt kind antioxidant or at least two combinations.
7. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: the profit
Lubrication prescription is N, one in N '-ethylene bis stearamide, polyethylene wax, polypropylene wax, calcium stearate, zinc stearate and magnesium stearate
Kind or at least two combinations.
8. the low linear expansion coefficient PP composite material of high glaze according to claim 1, it is characterised in that: described anti-
Microbial inoculum is silver ion class antibacterial agent, one of inorganic antiseptics such as zinc oxide, copper oxide, ammonium dihydrogen phosphate, lithium carbonate or extremely
Few two kinds of combinations.
9. the preparation side of the low linear expansion coefficient PP composite material of high glaze according to claim 1-8
Method, which comprises the following steps:
Step a, polypropylene, nucleating agent, brightener, mineral-filled, antioxidant, lubricant, antibacterial agent are weighed by weight percentage；
Step b, all materials in step a are added to progress high-speed stirred in high-speed mixer to be uniformly mixed, obtain premix；
Step c, parallel double-screw extruder is added from main feeding hopper in the premix for obtaining step b, and all components material is made to exist
Shear melting blending extrusion is carried out in parallel double-screw extruder；
Step d, it is low linear swollen to obtain high glaze for cooling, the dry, pelletizing by the material strip come out through parallel double-screw extruder mouth mold
Swollen coefficient PP composite material.
10. the low linear expansion coefficient PP composite material of high glaze according to claim 8, it is characterised in that: described
Double screw extruder processing temperature is 170-230 DEG C.
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| CN201811614238.8A CN109721839B (en) | 2018-12-27 | 2018-12-27 | High-gloss low-linear-expansion-coefficient polypropylene composite material and preparation method thereof |
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| CN201811614238.8A CN109721839B (en) | 2018-12-27 | 2018-12-27 | High-gloss low-linear-expansion-coefficient polypropylene composite material and preparation method thereof |
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| CN109721839B CN109721839B (en) | 2021-06-04 |
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Cited By (5)
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| CN111533992A (en) * | 2020-04-30 | 2020-08-14 | 上海日之升科技有限公司 | High-gloss environment-friendly antibacterial polypropylene composite material and preparation method thereof |
| CN111533988A (en) * | 2019-12-23 | 2020-08-14 | 会通新材料股份有限公司 | Good-appearance short-program-control oriented metallic silver polypropylene composite material and preparation method thereof |
| CN112175301A (en) * | 2020-10-22 | 2021-01-05 | 北方华锦化学工业股份有限公司 | Special antibacterial polypropylene material for washing machine and preparation method thereof |
| CN113698753A (en) * | 2021-09-22 | 2021-11-26 | 苏州纽微塑胶有限公司 | Raw material formula for producing automobile high-brightness appearance piece |
| CN115594917A (en) * | 2022-09-30 | 2023-01-13 | 武汉金发科技有限公司（Cn） | Polypropylene composite material with low linear expansion coefficient and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533988A (en) * | 2019-12-23 | 2020-08-14 | 会通新材料股份有限公司 | Good-appearance short-program-control oriented metallic silver polypropylene composite material and preparation method thereof |
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| CN111533992B (en) * | 2020-04-30 | 2022-12-27 | 上海日之升科技有限公司 | High-gloss environment-friendly antibacterial polypropylene composite material and preparation method thereof |
| CN112175301A (en) * | 2020-10-22 | 2021-01-05 | 北方华锦化学工业股份有限公司 | Special antibacterial polypropylene material for washing machine and preparation method thereof |
| CN113698753A (en) * | 2021-09-22 | 2021-11-26 | 苏州纽微塑胶有限公司 | Raw material formula for producing automobile high-brightness appearance piece |
| CN115594917A (en) * | 2022-09-30 | 2023-01-13 | 武汉金发科技有限公司（Cn） | Polypropylene composite material with low linear expansion coefficient and preparation method thereof |
| CN115594917B (en) * | 2022-09-30 | 2023-10-20 | 武汉金发科技有限公司 | Polypropylene composite material with low linear expansion coefficient and preparation method thereof |
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| CN109721839B (en) | 2021-06-04 |
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