CN106995555A - The high-strength polypropylene recovery material modified composite material of bloom and preparation method - Google Patents
The high-strength polypropylene recovery material modified composite material of bloom and preparation method Download PDFInfo
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- CN106995555A CN106995555A CN201710186130.2A CN201710186130A CN106995555A CN 106995555 A CN106995555 A CN 106995555A CN 201710186130 A CN201710186130 A CN 201710186130A CN 106995555 A CN106995555 A CN 106995555A
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Abstract
The invention belongs to polymer modification and processing technique field, it is related to a kind of high-strength polypropylene recovery material modified composite material of bloom and preparation method.The polypropylene material surface that it is solved obtained by existing polypropylene recovery and reuse technology is relatively rough, and transparency is relatively low, the technical problem of impact resistance difference.This PP composite material includes major ingredient and auxiliary material, and the major ingredient is polypropylene recovery material, after the heating of polypropylene recovery material and auxiliary material is miscible the PP composite material.This PP composite material has surface smooth, and glossiness and transparency are good, the high advantage of intensity, therefore made product is attractive and durable, during production Cheng Mo, also will not damage mould because coarse.
Description
Technical field
The invention belongs to polymer modification and processing technique field, it is related to a kind of high-strength polypropylene recovery material of bloom and is modified
Composite and preparation method.
Background technology
Polypropylene is a kind of thermoplastic, and light specific gravity, finished surface hardness is big, and elasticity is high, heat resistance, chemically stable
Property, insulating properties it is good, be widely used in fields such as auto parts and components, household electrical appliance.In recent years, the city of polypropylene material
Field demand is in the trend steeply risen, and at the same time polyacrylic discarded amount also increases year by year, and this is meant that to the energy
Demand pressure while constantly increase, the pressure of environmental protection also can not look down upon.
" energy-saving and emission-reduction ", " environmental protection " have become the important goal of countries in the world economic and technical development.Plastics
Reclaim and recycling, advantageously account for " white pollution " caused by plastics package etc. to national economy and ecological environment band
The problem of harmful effect come, in addition to the purpose that can be reached saving cost, economize on resources, pass through and reclaim and recycling profit
With, the use of the methods such as burning disposal waste or used plastics can also be greatly reduced so that reach reduce carbon emission purpose, to prevent
Global warming contributes, thus, with prior meaning.
Due to reclaiming polypropylene material because of aging, degraded, its performance substantially decays, the granulation process again of reclaimed materials
In, polypropylene segment can be destroyed and degraded again, therefore generally have rough surface by the directly obtained product of polypropylene recovery material, thoroughly
Lightness is low, the problem of impact resistance is poor.Therefore in order to preferably utilize reclaimed materials, polypropylene recovery material can be typically modified,
If can be good at overcoming above mentioned problem by the modified novel polypropylene material obtained, then just can will reclaim and regenerate
Polypropylene material is re-applied in conventional market demand side, so that the polyolefin total amount inputted to environment is greatly decreased, not only
Production cost, and science environmental protection can be reduced.
Therefore, this problem increasingly obtains everybody concern, and many enterprises proceed by being modified again for polypropylene recovery material
Research.For example, Chinese invention patent application discloses a kind of fiber glass reinforced polypropylene reclaimed materials and preparation method thereof [application number：
201510367074.3], this application by adding the medium-alkali glass fibre of certain number in polypropylene recovery material to strengthen poly- third
The intensity of alkene material.
Although the good strength problem for solving polypropylene recovery material of this application, also other problemses such as rough surface,
The low problem of transparency is not well solved.
The content of the invention
Regarding the issue above, the present invention provides a kind of high-strength polypropylene recovery material modified composite material of bloom and system
Preparation Method.
To reach above-mentioned purpose, present invention employs following technical proposal：A kind of high-strength polypropylene recovery material of bloom is modified multiple
Condensation material, including major ingredient and auxiliary material, the major ingredient are polypropylene recovery material, after the heating of polypropylene recovery material and auxiliary material is miscible it is described poly-
Acrylic composite.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, the auxiliary material is UHMWPE and/or alpha-olefin
Homopolymer.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, the purity of the polypropylene recovery material is more than or equal to
90%, density is 0.92-1.00g/cm3。
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, the alpha-olefin is 1- butylene.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, including mass fraction is respectively 68-80 parts
Polypropylene recovery material and 7-16 parts of auxiliary material；The auxiliary material includes UHMWPE and 4-8 parts of α-alkene that mass fraction is respectively 3-8 parts
The homopolymer of hydrocarbon.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, including mass fraction be respectively 74 parts poly- third
Alkene feed back and 12 parts of auxiliary material；The auxiliary material includes the homopolymerization that mass fraction is respectively 6 parts of UHMWPE and 6 part of alpha-olefin
Thing.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, also include glass fibre, the glass fibers
It is 10%-30% to tie up the percentage by weight in PP composite material.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, also include nucleator, the nucleator is
1,3,5- benzene trigalloyl amine nucleator, its percentage by weight in PP composite material is 0.1%-0.2%.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, the PP composite material also includes few
Halogen-absorber and a small amount of antioxidant are measured, the halogen-absorber is calcium stearate and/or hydration talcum powder；The antioxidant is
Antioxidant 1010.
In the above-mentioned high-strength polypropylene recovery material modified composite material of bloom, the melt index of the PP composite material
For 25 ± 5g/10min.
Compared with prior art, the advantage of the invention is that：
1st, this PP composite material surface is smooth, and glossiness is good, and intensity is high, therefore made product is attractive and durable,
During production Cheng Mo, also mould will not be damaged because coarse.
2nd, this PP composite material has larger melt index, therefore with preferable mobility and machinability, energy
Enough process requirements for meeting not identical product.
3rd, the major ingredient used in the present invention is polypropylene recovery material, realizes the recycling to polypropylene waste material, this is not only
Production cost can be reduced, and environmental protection is also significant.
Embodiment
Reagent used, unless otherwise specified, can be commercially available from routine biochemistry reagent shop in following embodiments.
Embodiment 1
The present embodiment provides a kind of PP composite material component, specifically, and PP composite material component includes matter
Amount number is respectively 80 parts of major ingredient and 7 parts of auxiliary material.
Wherein, major ingredient is that purity is 90%, and density is 1.00g/cm3Polypropylene recovery material；Auxiliary material is that mass fraction is 7 parts
UHMWPE.
UHMWPE is ultra-high molecular weight polyethylene, is a kind of heat for the excellent combination property energy that molecule has linear structure
Plastic engineering plastics, its mean molecule quantity is up to more than 1,500,000.UHMWPE has relatively low case hardness and heat distortion temperature,
After PP feed backs (i.e. polypropylene recovery material) are mixed, the mixture that UHMWPE can be with a part of PP long-chain molecules formation two-arch tunnel
System, collectively forms a kind of blending network.Remaining PP molecule constitutes a PP network, and two networks interweave for one kind " linearly mutually
Wear network ", wherein blending network plays skeleton function in the material, mechanical strength is provided for material, can be sent out by during external impacts
Life, to absorb the energy in the external world, plays a part of toughness reinforcing compared with large deformation.
UHMWPE has extremely low friction factor, and its friction factor is generally 0.05-0.11, therefore it has excellent profit certainly
Slip, a certain amount of UHMWPE is added into PP feed backs can make the PP composite material surface of gained more smooth.
Although UHMWPE has above-mentioned some advantages, due to the molecular weight of its superelevation, so UHMWPE be added into it is poly-
In acrylic composite, especially when its content is higher, viscosity increase during material molten can be caused, mobility is reduced, i.e.,
Melt index reduces, and this can reduce the machinability of material, makes difficulty of processing, processing cost rise.
Embodiment 2
The present embodiment provides a kind of PP composite material component, specifically, and PP composite material component includes matter
Amount number is respectively 68 parts of major ingredient and 16 parts of auxiliary material.
Wherein, major ingredient is that purity is 98%, and density is 0.92g/cm3Polypropylene recovery material；Auxiliary material is distinguished for mass fraction
For the homopolymer of 8 parts of UHMWPE and 8 part of 1- butylene.
Alpha-olefin refers to monoolefine of the double bond in strand end, molecular formula R-CH=CH2, wherein R is alkyl.Propylene and
1- butylene belongs to the category of alpha-olefin, therefore both PP feed backs and alpha-olefin homo have more preferable compatibility.To PP feed backs
Middle a certain amount of alpha-olefin homo of addition can reduce polyacrylic crystallinity, and PP composite material is improved to a certain extent
Transparency and mobility.
Embodiment 3
The present embodiment provides a kind of PP composite material component, specifically, and PP composite material component includes matter
Amount number is respectively 74 parts of major ingredient and 12 parts of auxiliary material.
Wherein, major ingredient is that purity is 95%, and density is 0.96g/cm3Polypropylene recovery material；Auxiliary material is distinguished for mass fraction
For the homopolymer of 6 parts of UHMWPE and 6 part of 1- hexenes.
Embodiment 4
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes glass fibre.Glass fibre can be the common glass of commercialization
Glass fiber, its length can be several millimeters, such as 2-10mm, and its percentage by weight in PP composite material is
10%.
Glass fibre is a kind of inorganic non-metallic material of excellent performance, and it has good insulating, heat resistance strong, anticorrosive
Good, many merits such as mechanical strength height of property, but having the disadvantage property is crisp, and wearability is poor.It is using glass marble or discarded glass as original
Expect to be manufactured into through high temperature melting, wire drawing, doff, the technique such as weave cotton cloth, a diameter of several microns of its monofilament are micro- to twenties
Rice, equivalent to the 1/20-1/5 of a hairline, is all made up of per bundle fiber precursor hundreds of even thousands of monofilament.
Glass fibre is typically used as the reinforcing material in composite, and glass fibre to the humidifications of plastics very
Substantially, because the modulus of glass fibre in itself is very high, and glass fibre grows along internal body, is expanded by external force during external force
Dissipate and improved with whole material, shock resistance and bending property.
Specifically, when composite is acted on by external force, either cross force or longitudinal force, either draw
Stretch or extruding force, composite inner can all produce a stress.When being added with glass fibre in composite, stress
Disperseed well by interface binding power excellent between composite material base body phase and glass fibre, make the fiber of excellent performance
Most of stress is assume responsibility for, so as to improve the combination property of composite.Existing experimental result is it can be shown that work as composite
By along glass fibre longitudinal direction power when, stress concentration produce at the two ends of glass fibre, and around glass fibre exist should
Power is less than the elliptical region of mean stress, and such glass fibre is by reducing the mean stress of composite material base body phase so as to reach
Enhancing effect is arrived；When composite is by along the horizontal power of glass fibre, matrices of composite material is sent out due to the influence of external force
Raw deformation, the modulus of the modular ratio glass fibre of matrix is small, and both are with reference to more close, thus glass fibre constrains
Matrix deformation and load is reached on glass fibre, such load is just by matrix and glass fibre shared, due to glass
The rigidity and intensity of fiber are all far above matrix, therefore the addition of glass fibre improves the mechanical property of material.
Embodiment 5
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes glass fibre.Glass fibre can be the common glass of commercialization
Glass fiber, its length can be several millimeters, such as 2-10mm, percentage by weight of the glass fibre in PP composite material
For 30%.
Embodiment 6
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes glass fibre.Glass fibre can be the common glass of commercialization
Glass fiber, its length can be several millimeters, such as 2-10mm, percentage by weight of the glass fibre in PP composite material
For 20%.
Embodiment 7
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes 1,3,5- tri- t-butyl carboxamide base benzene, 1,3,5- tri- t-butyl carboxamide base benzene
Percentage by weight in PP composite material is 0.1%.
Polyacrylic crystallization rate is relatively slow, easily forms big spherocrystal, makes product translucency poor, and outward appearance lacks aesthetic feeling.
1,3,5- tri- t-butyl carboxamide base benzene is one kind of nucleator, and nucleator can accelerate knot by changing polyacrylic crystallization behavior
Brilliant speed, increase crystal density and promote fine grain size, reach the transparent work(for shortening molding cycle, improving product
Energy.
PP composite material added with 1,3,5- tri- t-butyl carboxamide base benzene, because 1,3,5- tri- t-butyl carboxamide base benzene can
It is dissolved in melt polypropylene, forms homogeneous phase solution, therefore polypropylene, in cooling, clarifier first crystallizes to form fibrous network,
The network is not only uniformly dispersed, and fibre diameter therein only has 100 angstroms, less than the wavelength of visible ray.The surface of the network is
Crystallization nucleation center is formed, this fibrous network has great surface area due to (1), it is possible to provide high nucleation density；
(2) diameter of fiber matches with crystalling propylene thickness, moreover it is possible to promote nucleation；(3) fiber is very thin, it is impossible to scatter visible light；
Therefore 1,3,5- tri- t-butyl carboxamide base benzene improves polyacrylic nucleation density as out-phase nucleus, polypropylene is formed homogeneous refinement
Spherocrystal, reduce the refraction and scattering to light, transparency increase.
Embodiment 8
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes the t-butyl carboxamide of trimesic acid three, the t-butyl carboxamide of trimesic acid three
Percentage by weight in PP composite material is 0.2%.
The t-butyl carboxamide of trimesic acid three is also one kind of nucleator, and it improves the mechanism and 1 of polypropylene material transparency,
3,5- tri- t-butyl carboxamide base benzene it is identical, therefore no longer repeat herein.
Embodiment 9
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes sorbitol acetal, and sorbitol acetal is in PP composite material
Percentage by weight is 0.15%.
Sorbitol acetal is also one kind of nucleator, and it improves the mechanism and 1,3,5- tri- tertiary fourths of polypropylene material transparency
Amide groups benzene it is identical, therefore no longer repeat herein.
Embodiment 10
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes calcium stearate, weight of the calcium stearate in PP composite material
Percentage is 0.05%.
Calcium stearate is added into polypropylene material as a kind of halogen-absorber, and the main function of halogen-absorber is to use
The chlorine remained in neutralization polymer, prevents its etching apparatus in process.Calcium stearate is to chlorion Long-term absorption
Good, itself and chlorion reaction generate calcium chloride and stearic acid, and reaction equation is as follows：
Ca(C17H35COO)2+2HCl→CaCl2+2C17H35COOH
Embodiment 11
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes calcium stearate and hydration talcum powder, calcium stearate and hydration talcum powder
Total weight percent in PP composite material is 0.05%.
Hydration talcum powder is added into polypropylene material as a kind of halogen-absorber, hydration talcum powder have it is significant cloudy from
Sub- commutativity, carbanion therein is easy to exchange with chlorion, is adsorbed chlorion and is fixed on stable crystalline substance
In body structure, reaction equation is as follows：
Mg4.5Al2(OH)13CO3·3.5H2O+2HCl→Mg4.5Al2(OH)13Cl2·3.5H2O+H2O+CO2
Embodiment 12
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes antioxidant 1010, and antioxidant 1010 is in PP composite material
Percentage by weight is 0.2%.
Antioxidant 1010 is four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, can be effectively
Polymeric material thermal oxidative degradation during long-term use is prevented, while being also a kind of efficient processing stabilizers, can be improved
Discoloration-resistant of the polymeric material under the conditions of high temperature process.
Embodiment 13
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes antioxidant 1076, and antioxidant 1076 is in PP composite material
Percentage by weight is 0.2%.
Antioxidant 1076 is β-positive octadecanol ester of (3,5- di-tert-butyl-hydroxy phenyl) propionic acid, can effectively be suppressed
The thermal degradation and oxidative degradation of polymer.
Embodiment 14
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes a certain amount of polypropylene plastics flowable, by polypropylene plastics
The regulation of flowable addition so that the melt index for the polypropylene material being made about 25g/10min.
Polypropylene plastics flowable be for polypropylene plastics chemical composition feature and synthetically produced auxiliary chemicals, can
For improving the fluid ability between polypropylene molecule, so as to increase the melt index of polypropylene material.
Embodiment 15
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes a certain amount of polypropylene plastics flowable, by polypropylene plastics
The regulation of flowable addition so that the melt index for the polypropylene material being made about 20g/10min.
Embodiment 16
The present embodiment provides a kind of PP composite material, includes the PP composite material of embodiment 1-3 any one
Component.
Wherein, PP composite material also includes a certain amount of polypropylene plastics flowable, by polypropylene plastics
The regulation of flowable addition so that the melt index for the polypropylene material being made about 30g/10min.
Application examples 1
PP composite material component as described in embodiment 3, then add percentage by weight be 10% glass fibre,
1,3,5- tri- t-butyl carboxamide base benzene that percentage by weight is 0.1%, the calcium stearate that percentage by weight is 0.05%, weight percent
The polypropylene plastics flowable for being 0.8% than the antioxidant 1010 and percentage by weight for 0.2%, is made composite 1.
PP composite material component as described in embodiment 3, then add percentage by weight be 20% glass fibre,
1,3,5- tri- t-butyl carboxamide base benzene that percentage by weight is 0.15%, the calcium stearate that percentage by weight is 0.05%, weight hundred
Divide the polypropylene plastics flowable that antioxidant 1010 and percentage by weight that ratio is 0.2% are 0.6%, composite 2 is made.
PP composite material component as described in embodiment 3, then add percentage by weight be 30% glass fibre,
1,3,5- tri- t-butyl carboxamide base benzene that percentage by weight is 0.2%, the calcium stearate that percentage by weight is 0.05%, weight percent
The polypropylene plastics flowable for being 0.5% than the antioxidant 1010 and percentage by weight for 0.2%, is made composite 3.
Light transmittance, mist degree, tensile yield strength and the melt index to composite 1,2 and 3 are measured respectively, as a result
It is as shown in the table：
Interpretation of result：Obtained PP composite material can be seen that by above experimental data, with higher transparent
Degree, intensity and mobility, have reached expected purpose of the invention.
The photoelectricity haze meter WGW that light transmittance and haze detection data are produced from the optical instrument factory of Shanghai the 3rd；Stretching is bent
Take universal testing machine of the intensity detection data from the production of Shanghai Songyuan instrument manufacturing Co., Ltd；Melt index detects number
According to the XNR-400GM melt flow rate (MFR) analyzers produced from Chengde Ke Cheng testing machines Co., Ltd.
Above empirical value, by using the instrument, parallel three experiments are averaged.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of high-strength polypropylene recovery material modified composite material of bloom, it is characterised in that：Including major ingredient and auxiliary material, the major ingredient is
Polypropylene recovery material, after the heating of polypropylene recovery material and auxiliary material is miscible the PP composite material.
2. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 1, it is characterised in that：The auxiliary material is
UHMWPE and/or alpha-olefin homopolymer.
3. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 1, it is characterised in that：The polypropylene is returned
The purity of material is more than or equal to 90%, and density is 0.92-1.00g/cm3。
4. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 2, it is characterised in that：The alpha-olefin is
1- butylene.
5. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 2, it is characterised in that：This composite bag
Include mass fraction be respectively 68-80 parts polypropylene recovery material and 7-16 parts of auxiliary material；The auxiliary material is respectively including mass fraction
The homopolymer of 3-8 parts of UHMWPE and 4-8 parts of alpha-olefin.
6. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 5, it is characterised in that：This composite bag
Include mass fraction be respectively 74 parts polypropylene recovery material and 12 parts of auxiliary material；The auxiliary material is respectively 6 parts including mass fraction
The homopolymer of UHMWPE and 6 part of alpha-olefin.
7. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 1, it is characterised in that：This composite is also
Include glass fibre, percentage by weight of the glass fibre in PP composite material is 10%-30%.
8. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 1, it is characterised in that：This composite is also
Include nucleator, the nucleator is 1,3,5- benzene trigalloyl amine nucleators, its weight hundred in PP composite material
Divide than being 0.1%-0.2%.
9. the high-strength polypropylene recovery material modified composite material of bloom as claimed in claim 1, it is characterised in that：This composite is also
Include a small amount of halogen-absorber and a small amount of antioxidant, the halogen-absorber is calcium stearate and/or hydration talcum powder；It is described
Antioxidant is antioxidant 1010.
10. the high-strength polypropylene recovery material modified composite material of bloom as described in claim 1-9 is any, it is characterised in that：This is multiple
The melt index of condensation material is 25 ± 5g/10min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108276666A (en) * | 2018-01-11 | 2018-07-13 | 浙江品瑶科技股份有限公司 | High intensity high brightness polypropylene modified material based on polypropylene recovery material and preparation method thereof |
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Application publication date: 20170801 |