CN104479222A - Polypropylene composite material and preparation method thereof - Google Patents
Polypropylene composite material and preparation method thereof Download PDFInfo
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- CN104479222A CN104479222A CN201410788037.5A CN201410788037A CN104479222A CN 104479222 A CN104479222 A CN 104479222A CN 201410788037 A CN201410788037 A CN 201410788037A CN 104479222 A CN104479222 A CN 104479222A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
The invention belongs to the field of plastics, and provides a polypropylene composite material and a preparation method thereof. The polypropylene composite material is prepared from the following raw materials in percentage by weight: 28-72% of polypropylene, 15-40% of high-impact polystyrene, 8-16% of flame retardant, 2-8% of compatilizer, 2-5% of flame-retardant synergistic agent, 0.2-0.6% of antioxidant, 0.5-1% of ultraviolet absorbent, 0.5-1% of antimicrobial agent and 0.1-0.5% of other assistants. The preparation method comprises the following steps: weighing the raw materials in percentage by weight, uniformly mixing, and carrying out melt extrusion and granulation with a screw extruder. The method has the advantages of simple technique and low cost; the obtained polypropylene has better glossiness and mechanical properties than the single polypropylene material; the flame-retardant grade of the polypropylene composite material reaches UL94V-0; the polypropylene composite material can maintain favorable performance and glossiness in the open for a long time or under ultraviolet irradiation; and the glossiness, flame retardancy, weather resistance and mold resistance of the composite material molded product are greatly enhanced.
Description
Technical field
The invention belongs to plastic applications, particularly relate to a kind of polypropylene composite material and preparation method thereof.
Background technology
Along with the progress of civilization, people more and more focus on Personal hygiene, inevitably, our naked eyes to see that those have a strong impact on the microorganism of health of people, therefore, people often need to carry out disinfection cleaning to the article of often contact, like this, just require that these article preferably have weather-proof, antibacterial function, in addition, day by day serious along with fire, also should consider the flame retardant properties of article.
Polypropylene (PP) is translucent crystallization shape polymkeric substance, there is plasticity-, odorless is nontoxic, heat-resisting, corrosion-resistant, density is little feature, therefore, it is the lightest general-purpose plastics, and goods are by steam sterilizing, in addition, the highly crystallized due to its compound with regular structure, therefore fusing point can up to 167 DEG C, meanwhile, the shortcoming of PP is that low-temperature impact resistance is poor, more aging, but can be overcome respectively by modification, and the mechanical property of virgin pp material can only meet general requirement usually.
High-impact polystyrene (HIPS) is the shock proof polystyrene products of one that the way by adding poly-isoprene-isobutylene rubber particle is in polystyrene produced, this polystyrene products can be added micron order rubber grain and by the way of scion grafting, polystyrene and rubber grain be linked together, when being subject to impacting, the point stresses of crack propagation can be discharged by the rubber grain of flexible relative, therefore the expansion of crackle is hindered, and shock resistance is improved.Because PP and HIPS is that thermodynamics is incompatible, have higher interfacial tension, two-phase interface cohesiveness is poor, and after thus carrying out simple, direct melt blending, the material surface obtained is coarse and mechanical property is poor.
In addition, uv irradiation has suitable destruction to polypropylene flame redardant, its energy is enough to the molecular rupture made in PP, result is that fire-retardant PP variable color, embrittlement, efflorescence and overall performance decline, for extending the materials'use life-span and expanding materials application field, modification must be carried out to anti-flaming polypropylene material.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of polypropylene composite material and preparation method thereof is provided, be intended to solve the existing single problem that polypropylene material glossiness is low, mechanical property is low.
The present invention is achieved in that on the one hand, provides the polypropylene composite material that a kind of glossiness is high, mechanical property is strong, comprises the component of following weight percent:
Particularly, described polypropylene is homo-polypropylene or Co-polypropylene, and its flow rate is for being greater than 10g/10min.
Particularly, described high-impact polystyrene flow rate is 5-10g/10min.
Particularly, described fire retardant is two (2, the 3-dibromopropyl) ether of tetrabromo-bisphenol, two (2, the 3-dibromopropyl) ether, three (2 of tetrabromo-bisphenol s, 2-brooethyl-3-bromopropyl) phosphoric acid ester or three different three (2,3-dibromopropyl) polycyanate ester.
Particularly, described compatilizer is the SEBS grafted maleic anhydride of percentage of grafting 0.3-1%.
Particularly, the described fire retarding synergist mixture that to be antimonous oxide and zinc borate obtain according to the composite conjunction of weight percent 2:1 or antimonous oxide.
Particularly, described antioxidant is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid positive octadecanol ester obtain according to weight ratio 1:1 ~ 2 are composite.
Particularly, described uv-absorbing agent is hindered amine as light stabilizer, and described antiseptic-germicide is silver system microbial inoculum or zinc series antibacterial agent.
Particularly, other auxiliary agents described are that Zinic stearas, calcium stearate and TAS-2A obtain according to weight ratio 1:2:2 ~ 4 are composite.
On the other hand, provide a kind of polypropylene composite material preparation method, comprise the steps:
(1) recipe ingredient is taken
Described polypropylene, high-impact polystyrene, fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents is taken respectively according to the formula of above-mentioned polypropylene composite material;
(2) mixture is prepared
The described polypropylene taken in step (1), high-impact polystyrene, fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents are mixed, obtains mixture;
(3) melt extrude
The mixture obtained in step (2) is placed in singe screw or twin screw extruder, melt extrude, granulation, obtain polypropylene composite material, processing condition are: screw extrusion press one district temperature 170-190, two district temperature 200-220 DEG C, three district temperature 200-220 DEG C, four district temperature 200-220 DEG C, the barrel residence time 2 ~ 3min, melt pressure is 10-20MPa, die temperature is 100-120 DEG C, screw speed 130-150 rev/min, side feeding rotating speed 50-80 rev/min.
The invention has the beneficial effects as follows: polypropylene composite material of the present invention take polypropylene as major ingredient, and by compatilizer and high-impact polystyrene, fire retardant, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents act synergistically, thus impart the glossiness that this polypropylene composite material has excellence, the feature that mechanical property is strong, effectively overcome single polypropylene material glossiness low, the problem of the deficiency that mechanical property is low, in addition, polypropylene composite material flame retardant rating of the present invention reaches UL94V-0, to long-term outdoor or can good performance and glossiness be held under being in UV-irradiation, simultaneously, adopt the gloss of polypropylene composite material moulded products of the present invention, fire-retardant, weather-proof, anti-microbial property improves a lot.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is preparation method's schema of the polypropylene composite material that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Homopolymerization refers to the polyreaction of being undertaken by a kind of organic monomer.Homopolymer refers to the polymkeric substance by a kind of monomer polymerization, and typical homopolymer has polyethylene, polypropylene, polyvinyl chloride etc.Homopolymer polypropylene is polymerized by single propylene monomer, degree of crystallinity is higher, mechanical strength and resistance toheat good.Homopolymer polypropylene mixes a small amount of fluoride monomers when being polymerized to form, and have higher resistance to impact shock, random copolymerization propylene has higher resistance to impact shock and transparency, and block copolymerization propylene has higher resistance to impact shock.
The embodiment of the present invention provides a kind of polypropylene composite material, comprises the component of following weight percent:
Particularly, above-mentioned polypropylene component is as one of matrix component, and its density is little, odorless is nontoxic, have excellent erosion resistance, secondly, polypropylene has good thermotolerance, polypropylene material material products temperature to carry out disinfection sterilizing more than 100 DEG C, under the condition not being subject to external force, 150 DEG C also indeformable, in addition, its good moldability, be widely used in automotive industry, household electrical appliance, in the every profession and trades such as electronic devices and components, but, it is general to there is mechanical property in above-mentioned polypropylene, low-temperature impact resistance is poor, and more aging deficiency, therefore, when polypropylene being used for the product to mechanical property requirements is higher, needs make improvements, as preferred embodiment, described polypropylene is homo-polypropylene resin, at least one in acrylic resin copolymer, its flow rate is greater than 10g/10min, testing standard is ASTM D1238, when described polypropylene is two kinds, the blending ratio of its each composition is unrestricted, in a particular embodiment, this polyacrylic mass percentage can be 28%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, concrete component such as 72% grade.
Above-mentioned high-impact polystyrene flow rate is 5-10g/10min (testing standard is ASTM D1238).
Above-mentioned fire retardant is one of component important in polypropylene composite material, it is the functional aid that imparting combustible polymers has flame retardancy, in the preferred embodiment of the present invention, it is high that above-mentioned fire retardant is selected from flame retarding efficiency, injected volume is few, and at least one in the bromide fire retardant of low toxic and environment-friendly, as specific embodiment, described fire retardant is tetrabromo-bisphenol two (2, 3-dibromopropyl) ether, tetrabromo-bisphenol s two (2, 3-dibromopropyl) ether, three (2, 2-brooethyl-3-bromopropyl) phosphoric acid ester or three different three (2, 3-dibromopropyl) at least one in polycyanate ester, when above-mentioned fire retardant is two or more, the blending ratio of its each composition is unrestricted, in a particular embodiment, the mass percentage of this fire retardant can be 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, concrete component such as 16% grade.
In order to improve flame retardant effect, reduce the consumption of fire retardant, thus avoid the consumption because of fire retardant more and affect the physicals of matrix material, reduce production cost, in polypropylene composite material, appropriate fire retarding synergist is added in the embodiment of the present invention, in a preferred embodiment, the above-mentioned fire retarding synergist mixture that to be antimonous oxide and zinc borate obtain according to the composite conjunction of weight percent 2:1 or antimonous oxide, fire retarding synergist and fire retardant are with the use of the flame retardant effect that improve polypropylene composite material, decrease the consumption of fire retardant, therefore, improve the physicals of polypropylene composite material, reduce production cost simultaneously, and it is non-volatile during the burning of this fire retarding synergist, do not produce corrosive gases, environmental protection, in a particular embodiment, the mass percentage of this fire retarding synergist can be 2%, 2.5%, 3%, 4%, 4.5%, concrete component such as 5% grade.
Above-mentioned compatilizer is self-control SEBS grafted maleic anhydride, and percentage of grafting is 0.3-1%, Homemade method: take following material according to mass ratio: SEBS 99%, vinylbenzene 1.5%, maleic anhydride 2%, tasteless DCP 0.4%, (1) first initiator DCP is fully dissolved in vinylbenzene, (2) vinylbenzene and PP pellet that are dissolved with DCP are stirred, (3) maleic anhydride is mixed into blending extrusion in mixture, expressing technique is: temperature controls at 170-190 DEG C, screw speed controls to 300-400r/min, pass through screw rod shearing, mixing, then carry out drying to obtain, in a particular embodiment, the mass percentage of this compatilizer can be 2%, 3%, 4%, 5%, 6%, 7%, concrete component such as 8% grade, the embodiment of the present invention utilizes SEBS grafted maleic anhydride, reduce the interfacial free energy of blend and the free entropy of SEBS-g-MAH, eventually reduce the free energy of co-mixing system, therefore PP, HIPS, the consistency of SEBS-g-MAH is improved, thus improve the mechanical property of blend.
In order to improve the antibacterial ability of described polypropylene composite material, strengthen its automatically cleaning ability, improve its security, the other industry field higher to antibacterial requirement can be applicable to, example of the present invention with the addition of antiseptic-germicide in polypropylene composite material, as preferred embodiment, antiseptic-germicide is zinc series antibacterial agent or silver-series antibacterial agent, it is the inorganic metal antiseptic-germicide that carrier is made that antiseptic-germicide is with mineral filler, in a particular embodiment, the mass percentage of this antiseptic-germicide can be the concrete component such as 0.2%, 0.3%, 0.4%, 0.5%, 0.6%.
Stating in polypropylene composite material, to add other appropriate auxiliary agents are other performances in order to improve described polypropylene composite material, as oilness, stability etc., other auxiliary agents above-mentioned can add according to the requirement of described polypropylene composite material performance in a certain respect, its assistant types is unrestricted, as preferred embodiment, other auxiliary agents above-mentioned are Zinic stearas, calcium stearate and TAS-2A obtain according to weight ratio 1:2:2 ~ 4 are composite, in a particular embodiment, the mass percentage of this auxiliary agent can be 0.1%, 0.2%, 0.3%, 0.4%, concrete component such as 0.5% grade.
In order to improve the ageing resistance of polypropylene composite material in preparation and use procedure as much as possible, the preferred hindered amine as light stabilizer of the embodiment of the present invention is as uv-absorbing agent, this uv-absorbing agent is weight-average molecular weight is 1, 000 ~ 5, the low alkalinity hindered amine as light stabilizer of 000, because the alkalescence of hindered amine as light stabilizer is lower, not easily react with fire retardant and reduce the effect of photostabilizer, thus improve the work-ing life of photostabilizer, this uv-absorbing agent can purchase the high molecular low alkalinity hindered amine as light stabilizer CYASORB UV-3529 produced in U.S.'s cyanogen specialization work (Cytec), select low alkalinity hindered amine as light stabilizer, on the one hand, effectively can improve the ageing resistance of polypropylene composite material in preparation and use procedure, reduce polypropylene composite material due to the aging variable color caused, improve its work-ing life, on the other hand, due to the employing of embodiment of the present invention polypropylene composite material is bromide fire retardant, process and storage-particularly sunshine time, acidic substance can be produced, if select the photostabilizer that alkalescence is strong, then above-mentioned acidic substance can destroy the structure of photostabilizer, reduce its result of use, thus the light stability of polypropylene composite material is declined, weathering resistance declines, in a particular embodiment, the mass percentage of this uv-absorbing agent can be 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, concrete component such as 1% grade.
Be oxidized to prevent above-mentioned polypropylene composite material, improve the antioxidant property in preparation and use procedure of above-mentioned polypropylene composite material, extend its work-ing life, the embodiment of the present invention with the addition of antioxidant in polypropylene composite material, as preferred embodiment, above-mentioned antioxidant is four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid positive octadecanol ester obtains according to weight ratio 1:1 ~ 2 are composite, in a particular embodiment, the mass percentage of this antioxidant can be 0.2%, 0.3%, 0.4%, 0.5%, concrete component such as 0.6% grade.
Polypropylene composite material of the present invention take polypropylene as major ingredient, and by compatilizer and high-impact polystyrene, fire retardant, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents act synergistically, thus impart the glossiness that this polypropylene composite material has excellence, the feature that mechanical property is strong, effectively overcome single polypropylene material glossiness low, the problem of the deficiency that mechanical property is low, in addition, polypropylene composite material flame retardant rating of the present invention reaches UL94V-0, to long-term outdoor or can good performance and glossiness be held under being in UV-irradiation, simultaneously, adopt the gloss of polypropylene composite material moulded products of the present invention, fire-retardant, weather-proof, anti-microbial property improves a lot.
Correspondingly, the embodiment of the present invention provides a kind of polypropylene composite material preparation method, and as shown in Figure 1, this preparation method comprises the steps: this preparation method's schema
Step S01, takes recipe ingredient
Described polypropylene, high-impact polystyrene, fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents is taken respectively according to above-mentioned polypropylene composite material formula;
Step S02, prepares mixture
The above-mentioned polypropylene taken in step S01, high-impact polystyrene, fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents are mixed, obtains mixture;
Step S03, melt extrudes
The mixture obtained in step S02 is placed in singe screw or twin screw extruder, melt extrude, granulation, obtain polypropylene composite material, processing condition are: screw extrusion press one district temperature 170-190, two district temperature 200-220 DEG C, three district temperature 200-220 DEG C, four district temperature 200-220 DEG C, the barrel residence time 2 ~ 3min, melt pressure is 10-20MPa, die temperature is 100-120 DEG C, screw speed 130-150 rev/min, side feeding rotating speed 50-80 rev/min.
In above-mentioned steps S03, mixture melt extrude the technique that can adopt this area routine, better act synergistically in melt extruding to make each component, give the mechanical property that above-mentioned polypropylene composite material is more excellent, in a preferred embodiment, it is adopt singe screw or twin screw extruder to melt extrude that mixture melt extrudes, expressing technique condition is: screw extrusion press one district temperature 170-190, two district temperature 200-220 DEG C, three district temperature 200-220 DEG C, four district temperature 200-220 DEG C, the barrel residence time 2 ~ 3min, melt pressure is 10-20MPa, die temperature is 100-120 DEG C, screw speed 130-150 rev/min, side feeding rotating speed 50-80 rev/min, by screw rod shearing granulation, dry, cooling can prepare described polypropylene composite material.
Each component mixing only also need melt extrude and can obtain product by formula by the preparation method of above-mentioned polypropylene composite material at a proper temperature, melt extruding the temperature and time that only need control in process to melt extrude, therefore, its preparation method technique is simple, condition is easily controlled, with low cost, feature low for equipment requirements, is suitable for suitability for industrialized production.
Below in conjunction with specific embodiment, one detailed elaboration is done to the present invention.
Embodiment 1
The polypropylene composite material of this embodiment, by weight, composed of the following components:
PP 38%, HIPS 38%, fire retardant 12%, compatilizer 6%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.
Its preparation method is as follows:
(1) each component is taken by above-mentioned parts by weight;
(2) the described PP, the HIPS that take in step (1), fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide, other auxiliary agents are mixed, obtain mixture;
(3) by the mixture singe screw that obtains in step (2) or twin screw extruder, melt extrude, granulation, obtain polypropylene composite material, processing condition are: screw extrusion press one district temperature 170-190, two district temperature 200-220 DEG C, three district temperature 200-220 DEG C, four district temperature 200-220 DEG C, the barrel residence time 2 ~ 3min, melt pressure is 10-20MPa, die temperature is 100-120 DEG C, screw speed 130-150 rev/min, side feeding rotating speed 50-80 rev/min.
Embodiment 2
The polypropylene composite material of this embodiment, by weight, composed of the following components:
PP 41.5%, HIPS35%, fire retardant 12%, compatilizer 6%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.Preparation method is identical with embodiment 1.
Embodiment 3
The polypropylene composite material of this embodiment, by weight, composed of the following components:
PP 46.5%, HIPS 20%, fire retardant 12%, compatilizer 6%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.Preparation method is identical with embodiment 1.
Embodiment 4
The polypropylene composite material of this embodiment, by weight, composed of the following components:
PP 56.5%, HIPS 20%, fire retardant 12%, compatilizer 6%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.Preparation method is identical with embodiment 1.
Embodiment 5
The polypropylene composite material of this embodiment, by weight, composed of the following components:
PP61.5%, HIPS 15%, fire retardant 12%, compatilizer 6%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.Preparation method is identical with embodiment 1.
Comparative example 1
The polypropylene composite material of this comparative example, by weight, is made up of following component:
PP100%, compatilizer 3%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.Preparation method is identical with embodiment 1.
Comparative example 2
The polypropylene composite material of this comparative example, by weight, is made up of following component:
HIPS100%, compatilizer 3%, fire retarding synergist 3%, antioxidant 0.4%, uv-absorbing agent 0.7%, antiseptic-germicide 0.8%, other auxiliary agents 0.6%.Preparation method is identical with embodiment 1.
The method, step, the conditioned disjunction standard that detect:
Particle embodiment 1-5 being completed granulation in the convection oven of 70-90 DEG C dry 4 ~ 6 hours, again by the injection moulding sample preparation on 80T injection moulding machine of the particle of drying, keep mould temperature in sample making course between 70 ~ 100 DEG C, tensile strength is tested according to ASTM D638, cantilever beam impact strength is according to ASTM D256, and flexural strength is according to ASTM D790.
The performance test data of the polypropylene composite material that embodiment 1-5 and comparative example 1-2 prepares is as shown in table 1 below.
Table 1
Table 2 is xenon lamp aging 500 hours test results.
Table 2
Table 3 is anti-microbial property and scratch resistance test result.
Table 3
In sum, as can be seen from Table 1, in PP/HIPS matrix material, along with HIPS content reduces, composite material toughness increases, Strength Changes is little, but reduces along with HIPS is lasting, and composite material combination property obviously reduces, when HIPS content is 30%, the over-all properties of its matrix material is best, and the polypropylene composite material flame retardant rating prepared by above-mentioned each group reaches UL94V-0, to long-term outdoor or can hold good performance and glossiness under being in UV-irradiation.
From the experimental result of table 2, the tensile strength of polypropylene composite material prepared by above-described embodiment and goods thereof, extension at break probability, shock strength, chromatic aberration and the performance such as fire-retardant improve a lot, wherein, the polypropylene composite material of embodiment 1 properties that is shaping and goods reaches optimum regime.
From the experimental result of table 3, antibacterial polypropylene material made by above-described embodiment and goods thereof have all exceeded 99.6% to the bacteriostasis rate of intestinal bacteria, golden staphylococci, along with the increase of antiseptic-germicide dosage, the bacteriostasis rate of antibacterial polypropylene material and goods thereof is also in increase, wherein, the polypropylene composite material of embodiment 1 and the bacteriostasis rate of goods thereof reach optimum regime.
Polypropylene composite material of the present invention take polypropylene as major ingredient, and by compatilizer and high-impact polystyrene, fire retardant, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents act synergistically, thus impart the glossiness that this polypropylene composite material has excellence, the feature that mechanical property is strong, in addition, polypropylene composite material flame retardant rating of the present invention reaches UL94V-0, to long-term outdoor or can good performance and glossiness be held under being in UV-irradiation, simultaneously, adopt the gloss of polypropylene composite material moulded products of the present invention, fire-retardant, weather-proof, anti-microbial property improves a lot.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a polypropylene composite material, comprises the component of following weight percent:
2. polypropylene composite material as claimed in claim 1, it is characterized in that, described polypropylene is homo-polypropylene or Co-polypropylene, and its flow rate is greater than 10g/10min.
3. polypropylene composite material as claimed in claim 1, it is characterized in that, described high-impact polystyrene flow rate is 5-10g/10min.
4. polypropylene composite material as claimed in claim 1, it is characterized in that, described fire retardant is tetrabromo-bisphenol two (2,3-dibromopropyl) ether, tetrabromo-bisphenol s two (2,3-dibromopropyl) ether, three (2,2-brooethyl-3-bromopropyl) phosphoric acid ester or three different three (2,3-dibromopropyl) polycyanate ester.
5. polypropylene composite material as claimed in claim 1, it is characterized in that, described compatilizer is the SEBS grafted maleic anhydride of percentage of grafting 0.3-1%.
6. polypropylene composite material as claimed in claim 1, is characterized in that, described fire retarding synergist is antimonous oxide and zinc borate according to the composite mixture that obtains of weight ratio 2:1 or antimonous oxide.
7. polypropylene composite material as claimed in claim 1, it is characterized in that, described antioxidant is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid positive octadecanol ester obtain according to weight ratio 1:1 ~ 2 are composite.
8. polypropylene composite material as claimed in claim 1, it is characterized in that, described uv-absorbing agent is hindered amine as light stabilizer, and described antiseptic-germicide is silver system microbial inoculum or zinc series antibacterial agent.
9. polypropylene composite material as claimed in claim 1, it is characterized in that, other auxiliary agents described are that Zinic stearas, calcium stearate and TAS-2A obtain according to weight ratio 1:2:2 ~ 4 are composite.
10. the polypropylene composite material preparation method as described in any one of claim 1-9, comprises the steps:
(1) recipe ingredient is taken
Described polypropylene, high-impact polystyrene, fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents is taken respectively according to polypropylene composite material formula according to claim 1;
(2) mixture is prepared
The described polypropylene taken in step (1), high-impact polystyrene, fire retardant, compatilizer, fire retarding synergist, antioxidant, uv-absorbing agent, antiseptic-germicide and other auxiliary agents are mixed, obtains mixture;
(3) melt extrude
The mixture obtained in step (2) is placed in singe screw or twin screw extruder, melt extrude, granulation, obtain polypropylene composite material, processing condition are: screw extrusion press one district temperature 170-190, two district temperature 200-220 DEG C, three district temperature 200-220 DEG C, four district temperature 200-220 DEG C, the barrel residence time 2 ~ 3min, melt pressure is 10-20MPa, die temperature is 100-120 DEG C, screw speed 130-150 rev/min, side feeding rotating speed 50-80 rev/min.
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