CN102643480B - Anti-static alloy composite material and preparation method thereof - Google Patents
Anti-static alloy composite material and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 title claims abstract description 36
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- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 37
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims abstract description 30
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- 239000000203 mixture Substances 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 28
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
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- 238000003756 stirring Methods 0.000 claims description 13
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- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 8
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 6
- 238000010790 dilution Methods 0.000 claims description 6
- 239000012895 dilution Substances 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 239000012745 toughening agent Substances 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
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- 239000002994 raw material Substances 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 150000005690 diesters Chemical class 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 43
- 229920001155 polypropylene Polymers 0.000 abstract description 43
- 239000002861 polymer material Substances 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 abstract description 4
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 abstract description 2
- 239000000806 elastomer Substances 0.000 abstract 3
- 239000002270 dispersing agent Substances 0.000 abstract 2
- 239000011256 inorganic filler Substances 0.000 abstract 2
- 229910003475 inorganic filler Inorganic materials 0.000 abstract 2
- 230000002265 prevention Effects 0.000 abstract 1
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- 238000010438 heat treatment Methods 0.000 description 10
- 238000002425 crystallisation Methods 0.000 description 5
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- 150000001875 compounds Chemical class 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
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- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- MKYLOMHWHWEFCT-UHFFFAOYSA-N Manthidine Natural products C1C2=CC=3OCOC=3C=C2C2C3=CC(OC)C(O)CC3N1C2 MKYLOMHWHWEFCT-UHFFFAOYSA-N 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- SNFRINMTRPQQLE-JQWAAABSSA-N Montanin Chemical compound O[C@H]([C@@]1(CO)O[C@H]1[C@H]1[C@H]2O3)[C@]4(O)C(=O)C(C)=C[C@H]4[C@]11OC3(CCCCCCCCCCC)O[C@@]2(C(C)=C)C[C@H]1C SNFRINMTRPQQLE-JQWAAABSSA-N 0.000 description 1
- SNFRINMTRPQQLE-OFGNMXNXSA-N Montanin Natural products O=C1[C@@]2(O)[C@@H](O)[C@@]3(CO)O[C@H]3[C@@H]3[C@H]4[C@@]5(C(=C)C)O[C@](CCCCCCCCCCC)(O4)O[C@@]3([C@H](C)C5)[C@@H]2C=C1C SNFRINMTRPQQLE-OFGNMXNXSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- QTZPBQMTXNEKRX-UHFFFAOYSA-N Voacristine pseudoindoxyl Natural products N1C2=CC=C(OC)C=C2C(=O)C21CCN(C1)C3C(C(C)O)CC1CC32C(=O)OC QTZPBQMTXNEKRX-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
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- 239000000945 filler Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Abstract
The invention discloses an anti-static alloy composite material and belongs to the technical field of high polymer materials. The anti-static alloy composite material comprises the following components of, by weight, 100 parts of polypropylene (PP)/ linear low density polyethylene (LLDPE), 3-7 parts of elastomers, 10-60 parts of inorganic fillers, 5-15 parts of conducting materials, 3-10 parts of dispersing agents and 0.1-1.0 parts of coupling agents, wherein the PP is 30-70 parts. The invention further discloses a preparation method of the anti-static alloy composite material, which includes the following steps of mixing the PP, the LLDPE, the elastomers, the inorganic fillers, the dispersing agents and the coupling agents in a mixer, and adding the mixtures into a hopper of an extruder; adding the conducting materials into a feed barrel of the extruder form a side feeding port of the feed barrel of the extruder; subjecting the mixtures to plasticization, vacuum-pumping exhausting, extruding, cooling and granule-cutting, and obtaining the anti-static alloy composite material. According to the anti-static alloy composite material and the preparation method thereof, the problems that prepared products are not provided with performances of warpage prevention, low temperature resistance and anti-stativity on the premise of having basic mechanical properties and heat resistance when the PP, the LLDPE and the elastomers are mutually added in prior art are solved.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to a kind of anti-electrostatic alloy composite materials, the invention still further relates to a kind of preparation method of anti-electrostatic alloy composite materials.
Background technology
Polypropylene (PP) good heat resistance, rigidity is large.Have higher intensity and good mobility, be easy to moulding, but winter hardiness, weathering resistance, low-temperature flexibility and antistatic performance are poor, crystallization velocity is slow, yielding warpage.By modification, adopt the methods such as alloying, enhancing, toughness reinforcing, filling, make PP material can either keep the advantage of himself, can overcome its shortcoming again, thereby make its high performance, through engineering approaches and functionalization, and then expand the range of application of PP material.
In practical application, according to the purposes difference of material, PP material often needs to possess multiple performance simultaneously, the PP material that cold low temp area is used, just need to possess under basic mechanical performance, stable on heating prerequisite with performance antistatic, cold-resistant, low warpage, in prior art, normally make goods possessing under basic mechanical performance, stable on heating prerequisite with a kind of performance in antistatic, cold-resistant, low warpage by adding certain catalyzer, thereby cannot meet the application in low-temperature cold area.
Chinese patent literature CN102329455A discloses a kind of low warpage reinforced polypropylene compound material and preparation method thereof, and this low warpage reinforced polypropylene compound material is by weight, composed of the following components:
The prior art, by add whipping agent in existing common mineral-filled enhancing PP, makes material size in the time of injection moulding keep stable, has eliminated the phenomenon such as shrink, warpage.But the low warpage reinforced polypropylene compound material anti-electrostatic in the prior art, low temperature resistant poor performance cannot be used under low temperature environment.
Chinese patent literature CN101891914A discloses a kind of composite type high-conductivity polymer material and preparation method thereof, and this composite type high-conductivity polymer material is made up of the raw material of following weight percent:
Base resin composition 40 ~ 62%;
High electric conductivity carbon black 18 ~ 25%;
Rubber filling oil 10 ~ 30%;
Low-molecular-weight wax 1 ~ 3%;
Fluoroelastomer processing aid (PPA) 0.2 ~ 0.8%;
Lubricant 0.5 ~ 2%;
Mineral filler 1.5 ~ 3%;
Other auxiliary agents 0.5 ~ 2.5%;
Wherein base resin composition is the composition that thermoplastic resin and thermoplastic elastomer form by the weight ratio of 1:4 ~ 4:1, and thermoplastic resin can be the mixture of linear low density polyethylene (LLDPE), polypropylene (PP).Thermoplastic elastomer can be styrene-butadiene-styrene block copolymer (SBS).The prior art, by selecting two kinds of thermoplastic resin and thermoplastic elastomer macromolecule materials that solubility parameter is close, forms continuous interpenetrating(polymer)networks, is conducive to the distribution of carbon black class conducting medium on two-phase interface, forms complete space conductive network.Applicant studies discovery, " addition of LLDPE also has a significant impact for the warpage performance of system, simultaneously due to PP and LLDPE crystallization respectively, grain boundaries bonding force is less than crystals, the interpolation of LLDPE makes again the intensity of goods, rigidity is affected, appropriate elastomeric adding can be at PP, thereby LLDPE forms the over-all properties that interface transition layer has had goods, simultaneously, obtain possessing basic mechanical performance, warpage under stable on heating prerequisite, low temperature resistant, antistatic property is reasonable goods all, need PP, LLDPE, elastomerics and other components are added appropriate, work in coordination ".But in the prior art, first, the add-on of LLDPE is not limited, simultaneously, a wider range of disclosed elastomeric add-on, obviously it does not consider LLDPE, what elastomerics add-on need to possess PP material product is guaranteeing that goods possess basic mechanical performance, under stable on heating prerequisite, have warpage concurrently, low temperature resistant performance impact, secondly, in the prior art, composite type high-conductivity polymer material is mainly as sheath, impregnating material, coating electric wire layer, to mechanical property, warpage performance requriements is low, do not exist goods possessing basic mechanical performance, also need to be with good warpage under stable on heating prerequisite, low temperature resistant, the problem of antistatic property, therefore those skilled in the art cannot know at PP according to the prior art, LLDPE, which kind of other component elastomerics coordinates to make goods possess basic mechanical performance under which kind of add-on, under stable on heating prerequisite with good warpage, low temperature resistant, antistatic property.
Summary of the invention
The technical problem that the present invention solves is that PP in prior art, LLDPE, elastomerics can not make while mutually adding goods possess under basic mechanical performance, stable on heating prerequisite with the problem of good warpage, low temperature resistant, antistatic property, and then a kind of PP/LLDPE anti-electrostatic alloy composite materials and preparation method thereof is provided.
In order to address the above problem, the technical solution used in the present invention is as follows:
A kind of anti-electrostatic alloy composite materials, by weight, comprises following component:
Described elastomerics is styrene-butadiene-styrene block copolymer SBS, and described electro-conductive material is high graphitized carbon black.
Described PP/LLDPE anti-electrostatic alloy composite materials also comprises the toughener of 10 ~ 20 weight parts, and it is the alkali-free Non-twisting glass fibre of 10 ~ 16 μ m that described toughener adopts diameter.
Described anti-electrostatic alloy composite materials also comprises the lubricant of 1 ~ 3 weight part, the oxidation inhibitor of 0.1 ~ 1.0 weight part, the thermo-stabilizer of 0.1 ~ 1.0 weight part.
Described mineral filler comprises talcum powder, activation superfine light calcium carbonate and hollow glass bead, and described talcous weight part is 5 ~ 35, and the weight part of described activation superfine light calcium carbonate is 0 ~ 15, and the weight part of described hollow glass bead is 0 ~ 15.
The present invention also comprises a kind of preparation method of anti-electrostatic alloy composite materials, comprises the following steps:
The first step: by weight, by 100 parts of PP/LLDPE wherein PP be 30 ~ 70 parts, 3 ~ 7 parts of elastomericss, 10 ~ 60 parts of mineral fillers, 3 ~ 10 parts of dispersion agents add in mixing machine, 0.1 ~ 1.0 part of coupling agent is pressed after 1:0.5 ~ 1:2 dilution proportion with Virahol, add in described mixing machine with spray pattern, after stirring, add forcing machine hopper;
Second step: the material in described forcing machine hopper enters extruder barrel under the promotion of extruder screw, described electro-conductive material is fed mouth from the barrel side of described forcing machine and is added feeding cylinder, mixes with other components;
The 3rd step: mixture is mixed to form blend through plasticizing in described barrel, then extrudes after vacuum exhaust, then obtains described anti-electrostatic alloy composite materials through cooling and dicing.
Described electro-conductive material adds electro-conductive material hopper by sealing-duct, adds feeding cylinder by the screw rod of side feeding machine with stepless gearing method from side spout.
Further comprising the steps of after described second step:
The Glass Fiber Reinforcement of 10 ~ 20 weight parts is added in feeding cylinder by the venting port of described barrel, mix with other raw material.
In the described the first step, add the material of high mixer also to comprise: the thermo-stabilizer of the lubricant of 1 ~ 3 weight part, the oxidation inhibitor of 0.1 ~ 1.0 weight part, 0.1 ~ 1.0 weight part;
In the described the first step, each component adopts the stirring velocity of 150 ~ 200rpm to stir after 5 ~ 15 minutes at 70 ℃ ~ 90 ℃ temperature in described mixing machine, adds forcing machine hopper;
In described forcing machine hopper, stir with 30 ~ 50rpm speed stirrer, prevent material bridging;
In described second step, the screw rod that described electro-conductive material is fed on machine by side adds feeding cylinder with stepless gearing method from barrel side hello the mouth of described forcing machine;
Described mixing machine is high mixer.
Described forcing machine rotating speed is 250 ~ 300rpm, described barrel is divided into following 7 districts, the each district of barrel temperature is: 150 ~ 170 ℃, a district, two 170 ~ 190 ℃, districts, three 180 ~ 200 ℃, districts, four 190 ~ 210 ℃, districts, five 190 ~ 200 ℃, districts, six 190 ~ 200 ℃, districts, seven 180 ~ 200 ℃, districts, 170 ~ 190 ℃ of head temperatures.
The present invention is with respect to the beneficial effect of prior art:
PP/LLDPE alloy composite materials of the present invention is by controlling the addition of PP, LLDPE, add appropriate elastomerics, mineral filler, dispersion agent, coupling agent simultaneously, each component acting in conjunction possesses under basic mechanical performance, stable on heating prerequisite with good electroconductibility, lower temperature resistance, low warpage PP/LLDPE alloy material, can under cold low temperature environment, use.
In goods, add appropriate toughener.Can make goods there is higher intensity, meet for the higher application of requirement of strength.
Add appropriate lubricant and can improve the processing characteristics of goods, the easier demoulding in the goods course of processing.
Electro-conductive material in the present invention adopts high graphitized carbon black, because high graphitized carbon black has the little structure of chain porous particle diameter, electrical efficiency is higher, and consumption is little, thereby intensity and flowability affects to goods are less.
In preparation method of the present invention, by spraying into again high mixer after coupling agent dilution, the coupling agent of thickness can be evenly distributed more easily.And make originally fully to mix entering before forcing machine by controlling suitable whipping temp, churning time.
The chain vesicular structure of high graphitized carbon black can make goods have good antistatic performance.
In method of the present invention, in the hopper of forcing machine, stir with 30 ~ 50rpm stirrer, prevent material bridging, put up a bridge and refer to that material forms arcuation at the discharge port place of hopper or bridge shape is piled up, hindered the downward phenomenon of carrying of material above.
In preparation method of the present invention; electro-conductive material adopts sealing-duct to send into electro-conductive material hopper; screw rod by side feeding machine adds feeding cylinder with stepless gearing method; it adds speed according to antistatic material, resistance requirement height to be regulated; in non-stop-machine situation; make material resistance fluctuation little, precise and stable; The electro-conductive material ejecta pollution environment such as carbon black be can prevent again, environment protection clean, safety in production accomplished.
In preparation method of the present invention, by controlling temperature and the twin screw rotating speed of each section of barrel of forcing machine, make each component plastify blending dispersion even, thereby be conducive to prepare the goods of excellent property.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention and beneficial effect are further described.
The present invention adopts LLDPE, elastomerics, mineral filler to carry out modification to PP, PP in PP/LLDPE and LLDPE crystallization respectively, LLDPE can make the spherocrystal refinement of PP, when LLDPE is within the scope of the invention time, can form inierpeneirating network structure, make material more have tenacity, thereby improved the winter hardiness of material.Because be both crystalline polymer, adding the thermotolerance impact of goods of LLDPE is little simultaneously.Because LLDPE crystallization velocity is about 3 times of PP, therefore the crystallization of PP/LLDPE is fast, and when the add-on of LLDPE is within the scope of the invention time, the post shrinkage distortion of goods is little, thereby reduces the warpage of goods; In the present invention, add elastomerics simultaneously, elastomerics forms obvious interface transition layer at PP/LLDPE, interface structure is good, elastic dispersed phase particle is less, this improves Mechanical Properties of Products, coordinate mineral filler, coupling agent etc. simultaneously, goods are possessed under basic mechanical performance, stable on heating prerequisite with good electroconductibility, lower temperature resistance, low warpage, can under cold low temperature environment, use.
Elastomerics in the present invention can be used SBS, ethylene-vinyl acetate copolymer (EVA), ethylene-octene copolymer (POE) etc., and the affinity of SBS and PP, LLDPE is good, and consumption is few.POE is best, but consumption is many, price.
For the higher structural part of requirement of strength, should add toughener, such as glass fibre (GF), consumption is 10 ~ 20%, consumption too much can affect mobility and buckling deformation, and diameter 10 ~ 16um alkali free glass fibre can be distributed in PP/LLDPE goods uniformly, plays good enhancement.
Electro-conductive material in the present invention adopts high graphitized carbon black, and the efficiency of high graphitized carbon black is high, and therefore consumption is little, less to intensity and flowability affects.Add in scope of the present invention, the resistance of goods can reach 10
3~ 10
9Ω cm, and be permanent antistatic.The high graphitized carbon black using is the high structure of chain porous, diameter 30nm, oil-absorption(number) 380 ~ 460ml/100g; Can certainly adopt other electro-conductive material, such as ordinary carbon black, but effect is poor.
Coupling agent in the present invention adopts two iso stearyl metatitanic acid second diester (XY-1), belongs to chelating titanic acid ester.This is mainly to consider that it is relatively suitable for the filler that moisture content is high, as the surface treatment of talcum powder, carbon black, GF etc., and also affine with PP and LLDPE.
Mineral filler in the present invention adopts the one or more kinds of combinations of talcum powder, calcium carbonate, hollow glass micropearl, wherein talcum powder adopts 1250 orders, carrier free activation master batch, can improve goods hardness, thermotolerance, dimensional stability, improve antistatic performance and mobility, and be suitable for polyolefin resin.Calcium carbonate adopts 1250 orders, activation superfine light calcium carbonate, has synergy with talcum powder, can improve shock strength, improves outward appearance, reduces costs.Hollow glass micropearl, silane coupling agent processing, adopts 1250 orders, and isotropy can be assisted and be reduced goods buckling deformation, improves liquidity, and density is low, high strength, and can eliminate floating fine.
Dispersion agent of the present invention adopts PP wax, alkyl multiamide polyol ester (MEBS).
In order to improve antioxidant property, thermal stability, the processing characteristics of goods, in goods of the present invention, can also add antioxidant such as 1010, thermo-stabilizer is such as calcium stearate, lubricant are such as white oil (No. 15), montanin wax (OP).
Embodiment 1-10, the proportioning of comparative example 1 and performance index are referring to table 1, and wherein comparative example 1-3 is according to the proportioning in Chinese patent literature CN101891914A, and preparation process and performance test methods are as follows,
1, preparation method
The first step: by described PP, LLDPE, elastomerics, mineral filler, each component of dispersion agent adds in high mixer, when containing lubricant in formula, oxidation inhibitor, when thermo-stabilizer, now add together in high mixer, described coupling agent is pressed after 1:1 dilution proportion with Virahol, add in described high mixer with spray pattern, after stirring 10 minutes at 80 ℃ of temperature, the speed of employing 150 ~ 200rpm adds the hopper of forcing machine, certainly can adopt other any mixing procedure conditions that each raw material can be mixed, stirrer with 30 ~ 50rpm in the hopper of described forcing machine stirs, prevent material bridging,
Second step: described electro-conductive material is inserted to the electro-conductive material hopper on side feeding machine, and described electro-conductive material is fed mouth from the barrel side of described forcing machine and added feeding cylinder, mixes with other components; Described electro-conductive material adds electro-conductive material hopper by sealing-duct, adds extruder barrel by the screw rod of side feeding machine with stepless gearing method, adds speed to require to determine according to the resistance of anti-electrostatic alloy composite materials of the present invention.The resistance of the anti-electrostatic alloy composite materials that so both can accurately prepare in non-stop-machine situation, can prevent again carbon black ejecta pollution environment, accomplishes safety and environmental protection.Add speed to be generally 8 ~ 12rpm.While containing glass in formula, the venting hole by the glass measuring from barrel adds.
The 3rd step: extrude after described forcing machine vacuum exhaust, then obtain described PP/LLDPE anti-electrostatic alloy composite materials through cooling and dicing, forcing machine rotating speed is 280 revs/min, described barrel is divided into 7 districts, the each district of barrel temperature is followed successively by 160-180-190-200-195-195-190 ℃, cooling employing water-cooled and air-cooled, pelletizing speed is 800 revs/min.
The model of the high mixer adopting in the present invention is SHR-300A high-speed mixer, and the model of low-speed mixer is the subsidiary engine in forcing machine for this reason, and the model of forcing machine is SHJ-58 parallel dual-screw extruding machine.
2, performance evaluation
(1) sample preparation
By the material doing by above method, getting about 3kg, to put into 90 ℃ of baking ovens dry after 3 hours, adopts sample mold sample preparation, 200 ~ 220 ℃ of barrel temperatures on 50T injection moulding machine.
(2) performance test
Tensile strength: dumbbell specimen, size 150 × 20 × 4. carry out according to GB/T1040-1992 plastic tensile strength test method.
Volume resistance: sample Φ 80 × 3.2, by GB/T1410-1989 standard testing.
Buckling deformation: sample Φ 80 × 3.2, tests with reference to D792 method.
Vicat softening point temperature: sample 10 × 10 × 4, use GB/T1634.2-2004 standard testing.
Concrete proportioning and the performance index of table 1 embodiment 1-10
As can be seen from Table 1, anti-electrostatic alloy composite materials of the present invention is possessing under basic mechanical performance, stable on heating prerequisite with good anti-warpage, low temperature resistant, antistatic property.Comparing ratio 1,2,3 receives and is all improved in basic mechanical performance, thermotolerance, antistatic property, anti-warpage performance.
Claims (8)
1. an anti-electrostatic alloy composite materials, is characterized in that, by weight, is made up of following component:
100 parts of PP/LLDPE, wherein, PP is 30-70 part
Elastomerics 3-7 part
Mineral filler 10-60 part
Electro-conductive material 5-15 part
Dispersion 3-10 part
Coupling agent 0.1-1.0 part
Described elastomerics is styrene-butadiene-styrene block copolymer SBS, and described electro-conductive material is high graphitized carbon black;
Described mineral filler comprises talcum powder, activation superfine light calcium carbonate and hollow glass bead, and described talcous weight part is 5～35, and the weight part of described activation superfine light calcium carbonate is 0～15, and the weight part of described hollow glass bead is 0～15;
Described coupling agent adopts two iso stearyl metatitanic acid second diester;
Described dispersion agent adopts PP wax and alkyl multiamide polyol ester.
2. anti-electrostatic alloy composite materials according to claim 1, is characterized in that,
Described PP/LLDPE anti-electrostatic alloy composite materials also comprises the toughener of 10～20 weight parts, and it is the alkali-free Non-twisting glass fibre of 10～16 μ m that described toughener adopts diameter.
3. anti-electrostatic alloy composite materials according to claim 1 and 2, is characterized in that, described anti-electrostatic alloy composite materials also comprises the lubricant of 1～3 weight part, the oxidation inhibitor of 0.1～1.0 weight part, the thermo-stabilizer of 0.1～1.0 weight part.
4. a preparation method for anti-electrostatic alloy composite materials according to claim 1, comprises the following steps:
The first step: by weight, by 100 parts of PP/LLDPE wherein PP be 30～70 parts, 3～7 parts of elastomericss, 10～60 parts of mineral fillers, 3～10 parts of dispersion agents add in mixing machine, 0.1～1.0 part of coupling agent is pressed after 1:0.5～1:2 dilution proportion with Virahol, add in described mixing machine with spray pattern, after stirring, add forcing machine hopper;
Second step: the material in described forcing machine hopper enters extruder barrel under the promotion of extruder screw, described electro-conductive material is fed mouth from the barrel side of described forcing machine and is added feeding cylinder, mixes with other components;
The 3rd step: mixture is mixed to form blend through plasticizing in described barrel, then extrudes after vacuumizing and exhausting, then obtains described anti-electrostatic alloy composite materials through cooling and dicing.
5. the preparation method of anti-electrostatic alloy composite materials according to claim 4, is characterized in that, described electro-conductive material adds electro-conductive material hopper by sealing-duct, adds feeding cylinder by the screw rod of side feeding machine with stepless gearing method from side spout.
6. a preparation method for anti-electrostatic alloy composite materials according to claim 2, comprises the following steps:
The first step: by weight, by 100 parts of PP/LLDPE wherein PP be 30～70 parts, 3～7 parts of elastomericss, 10～60 parts of mineral fillers, 3～10 parts of dispersion agents add in mixing machine, 0.1～1.0 part of coupling agent is pressed after 1:0.5～1:2 dilution proportion with Virahol, add in described mixing machine with spray pattern, after stirring, add forcing machine hopper;
Second step: the material in described forcing machine hopper enters extruder barrel under the promotion of extruder screw, described electro-conductive material is fed mouth from the barrel side of described forcing machine and is added feeding cylinder, mixes with other components;
The 3rd step: mixture is mixed to form blend through plasticizing in described barrel, then extrudes after vacuumizing and exhausting, then obtains described anti-electrostatic alloy composite materials through cooling and dicing;
Wherein, further comprising the steps of after described second step:
The Glass Fiber Reinforcement of 10～20 weight parts is added in feeding cylinder by the venting port of described barrel, mix with other raw material.
7. the preparation method of anti-electrostatic alloy composite materials according to claim 6, is characterized in that, described electro-conductive material adds electro-conductive material hopper by sealing-duct, adds feeding cylinder by the screw rod of side feeding machine with stepless gearing method from side spout.
8. a preparation method for anti-electrostatic alloy composite materials according to claim 3, comprises the following steps:
The first step: by weight, by 100 parts of PP/LLDPE wherein PP be 30～70 parts, 3～7 parts of elastomericss, 10～60 parts of mineral fillers, 3～10 parts of dispersion agents add in mixing machine, 0.1～1.0 part of coupling agent is pressed after 1:0.5～1:2 dilution proportion with Virahol, add in described mixing machine with spray pattern, after stirring, add forcing machine hopper;
Second step: the material in described forcing machine hopper enters extruder barrel under the promotion of extruder screw, described electro-conductive material is fed mouth from the barrel side of described forcing machine and is added feeding cylinder, mixes with other components;
The 3rd step: mixture is mixed to form blend through plasticizing in described barrel, then extrudes after vacuumizing and exhausting, then obtains described anti-electrostatic alloy composite materials through cooling and dicing;
Wherein, in the described the first step, add the material of mixing machine also to comprise: the thermo-stabilizer of the lubricant of 1～3 weight part, the oxidation inhibitor of 0.1～1.0 weight part, 0.1～1.0 weight part;
In the described the first step, each component adopts the stirring velocity of 150～200rpm to stir after 5～15 minutes at 70 ℃～90 ℃ temperature in described mixing machine, adds forcing machine hopper;
In described forcing machine hopper, stir with 30～50rpm speed stirrer, prevent material bridging;
In described second step, the screw rod that described electro-conductive material is fed on machine by side adds feeding cylinder with stepless gearing method from barrel side hello the mouth of described forcing machine; Described mixing machine is high mixer.
9. the preparation method of anti-electrostatic alloy composite materials according to claim 8, is characterized in that, described electro-conductive material adds electro-conductive material hopper by sealing-duct, adds feeding cylinder by the screw rod of side feeding machine with stepless gearing method from side spout.
10. according to the preparation method of the anti-electrostatic alloy composite materials described in any one in claim 4-9, it is characterized in that, described forcing machine rotating speed is 250～300rpm, and described barrel is divided into following 7 districts, the each district of barrel temperature is: 150～170 ℃, a district, two 170～190 ℃, districts, three 180～200 ℃, districts, four 190～210 ℃, districts, five 190～200 ℃, districts, six 190～200 ℃, districts, seven 180～200 ℃, districts, 170～190 ℃ of head temperatures.
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| CN102924813A (en) * | 2012-11-08 | 2013-02-13 | 大连耐普特种塑胶有限公司 | Master batch special for electrical conductivity polypropylene packing plate |
| CN103254500B (en) * | 2013-04-01 | 2015-09-09 | 中广核俊尔新材料有限公司 | A kind of to reclaim matrix material that polypropylene is matrix modification and preparation method thereof |
| CN104163989A (en) * | 2013-05-16 | 2014-11-26 | 苏州御诚数码科技有限公司 | Odorless glass fiber enhanced polypropylene alloy material |
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| CN103937107A (en) * | 2014-05-09 | 2014-07-23 | 东莞市德诚塑化科技有限公司 | Conductive polypropylene (PP) and preparation method thereof |
| CN107686643B (en) * | 2017-10-26 | 2019-10-18 | 浙江三威防静电装备有限公司 | A kind of polycarbonate polyol alloy antistatic composite engineering material and preparation method |
| CN113004614A (en) * | 2021-03-10 | 2021-06-22 | 重庆嘉良塑胶制品有限责任公司 | Spraying-free polypropylene composite material and preparation method thereof |
| CN114874537B (en) * | 2022-03-22 | 2024-01-12 | 金发科技股份有限公司 | Antistatic PP composite material with high heat resistance and high dimensional stability, and preparation method and application thereof |
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