CN103059465B - High heat resisting and high abrasion resistant polyvinyl chloride (PVC) modified material and preparation method thereof - Google Patents
High heat resisting and high abrasion resistant polyvinyl chloride (PVC) modified material and preparation method thereof Download PDFInfo
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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
- B29C48/03—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
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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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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- 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
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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Abstract
The invention relates to the technical field of polyvinyl chloride composite materials, in particular to high heat resisting and high abrasion resistant polyvinyl chloride (PVC) modified materials and a preparation method of the high heat resisting and high abrasion resistant PVC modified materials. The modified materials comprise the following raw materials, by weight, 80-120 parts of PVC resin, 25-60 parts of stuffing bulking agents, 21-60 parts of plasticizer, 1-10 parts of chlorinated polyvinyl chloride, 1-10 parts of fire retardant, 1-10 parts of stabilizer, 1-10 parts of impact modifier and 0.2-2 parts of lubricating agents. The raw materials are weighed according to parts by weight and are blended. After being blended, the raw materials are extruded out to be granulated through a double-screw extruder to produce the modified materials. The modified materials are good in heat resisting property and abrasion resistant property, environment-friendly, high in strength, good in flame retardant effect, strong in compressing property and toughness, good in processing property and good in comprehensive property. The preparation method is simple in craft, convenient to operate and control, stable in quality and high in production efficiency, and can be produced in a large scale industrialization mode.
Description
Technical field
The present invention relates to polyvinyl chloride composite materials technical field, it is material modified and preparation method thereof to be specifically related to a kind of high heat-resisting high abrasion-resistant environmental protection PVC.
Background technology
The advantages such as polyvinyl chloride (PVC) is one of industrialization the earliest, broad-spectrum general-purpose thermoplastic plastic, and it has, and quality is light, intensity is high, insulation, fire-retardant, corrosion-resistant, high comprehensive performance, cheap and raw material sources are extensive; But also there is following shortcoming: 1, poor toughness, very easily embrittlement when being hit, therefore can not be used as structured material, in addition, the fragility temperature influence of polyvinyl chloride is very large, and general PVC product uses lower limit to be-15 DEG C, and the use lower limit of flexible PVC is-30 DEG C; 2, poor heat stability, it just starts to decomposite HCl 100 DEG C time, more rapid higher than decomposing when 150 DEG C, and the melt temperature of PVC is about 210 DEG C; 3, the viscosity of PVC is high, mobility extreme difference, limits it to a certain extent and uses.People often adopt methods such as adding filler, elastomerics, softening agent, thermo-stabilizer, processing aid, heat-proof modifier and flow ability modifying agent to improve the performance of PVC.
Application number is 201210283970.8 disclose a kind of environment-friendly vehicle interior trim PVC granule, comprises following components by weight percent: PVC 100, softening agent 10 ~ 90, calcium carbonate 0 ~ 60, stablizer 1 ~ 6, processing aid 0 ~ 4, lubricant 0.2 ~ 3.
Application number is 00112381.5 disclose a kind of fire-resistant smoke-inhibiting PVC package sheet material, it comprises the PVC resin powder containing accounting for total weight percent 70 ~ 80%, the stablizer of 1 ~ 1.5%, 0.5 ~ 1% lubricant, 1 ~ 1.2% processing aid, 6 ~ 8% tougheners, 5 ~ 8% fillers, it is characterized in that, it also comprises the anti-flaming smoke-inhibiting agent of 8 ~ 10%, this anti-flaming smoke-inhibiting agent is by antimonous oxide, eight amine molybdates, zinc borate forms, its ratio is respectively 0.4: 1: 1.25, above-mentioned materials order is kneaded through high temperature, stir, coldly to stir, extrude, calendering, peel off, be cooled to room temperature to be made.
Application number is 201110080804.3 disclose a kind of withstand voltage abrasion resistant electrical wire PVC and expect, its weight part consists of: 100 parts, polyvinyl chloride powder, diisononyl phthalate 45 ~ 55 parts, stablizer 4.5 ~ 5.5 parts, lubricant 0.5 ~ 1 part, anti-wear agent 16 ~ 20 parts, fire retardant 1.5 ~ 2.5 parts, toner 1 part.
The performance index of existing most of PVC material are all meeting the basic demand of national standard, for a lot of particular surroundings as under the environment of high temperature and wearing and tearing, current PVC material performance still reliably can not meet the demand of life-time service under the condition of high temperature and wearing and tearing, and the heat-resistant antifriction performance of PVC material also needs to optimize improvement further; In addition, all there is quite serious pollution in existing PVC sheath cable, PVC plug, PVC film and pvc pipe, can cause certain harm to HUMAN HEALTH, researches and develops that a kind of PVC of environmental protection is material modified also seems particularly important.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the object of the present invention is to provide a kind of high heat-resisting high abrasion-resistant environmental protection PVC material modified, the material modified heat-resistant antifriction excellent property that the present invention obtains, environmental protection, and intensity is high, good flame retardation effect, compression performance and toughness strong, processing characteristics is excellent, excellent combination property.
Another object of the present invention is to the preparation method providing a kind of high heat-resisting high abrasion-resistant environmental protection PVC material modified, preparation method's technique of the present invention is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
Object of the present invention is achieved through the following technical solutions: a kind of high heat-resisting high abrasion-resistant environmental protection PVC is material modified, and it is made up of the raw material of following weight part:
Polyvinyl chloride resin 80 ~ 120 parts
Weighting agent 25 ~ 60 parts
21 ~ 60 parts, softening agent
Chlorinated polyvinyl chloride 1 ~ 10 part
Fire retardant 1 ~ 10 part
Stablizer 1 ~ 10 part
Impact modifier 1 ~ 10 part
Lubricant 0.2 ~ 2 part.
Preferably, described polyvinyl chloride resin is SG-5 type polyvinyl chloride resin and/or SG-7 type polyvinyl chloride resin.
SG-5 type polyvinyl chloride resin is that platform is moulded S-65, is unified into US65, Dagu DG-1000, eastern Cao TG-1000 or eastern Cao TG-1300; white powder; mean polymerisation degree is 1100 ~ 1000; apparent density is 0.4 ~ 0.6g/mL, can be used for producing flexible film, leatheroid, sheet material, tubing, section bar, corrugated tube, cable protection pipe, flexible pipe, sole and various soft product.
SG-7 type polyvinyl chloride resin is that platform moulds S-70 or eastern Cao TG-800, and be white powder or white particles shape, mean polymerisation degree is 590 ~ 1500, and mean density is 1.40g/mL, can be used for the process for processing of polyvinyl chloride boardy product, soft goods, coating and tackiness agent.
Preferably, described weighting agent is made up of water-ground limestone 10 ~ 25 parts and silica 15 ~ 35 parts.
Water-ground limestone is 1250 orders, white powder, conventional powdery inorganic filler, have that chemical purity is high, inertia greatly, not easily chemical reaction, Heat stability is good, can not decompose less than 400 DEG C, whiteness is high, oil absorbency is low, refractive index is low, matter is soft, dry, do not contain the advantages such as crystal water, the low wear(ing)value of hardness are little, nontoxic, tasteless, odorless, good dispersity.
Silicon-dioxide can improve the fastness to rubbing of PVC material as weighting agent, and improve wear resistance and the anti-slippery of material, tensile strength, tear strength etc. are improved.
Water-ground limestone and silicon-dioxide can improve thermotolerance and the wear resistance of material as the composite use of weighting agent, can also improve surface luster and the profile pattern of material.
Preferably, described softening agent is made up of dioctyl terephthalate 15 ~ 35 parts, trioctyl trimellitate 5 ~ 15 parts and epoxy soybean oil 1 ~ 10 part.
Dioctyl terephthalate (DOTP), the low-viscosity (mobile) liquid of near colorless, molecular formula is C
24h
38o
4, molecular weight is 390.30, and density is 0.981 ~ 0.986g/mL, is the primary plasticizer of a kind of excellent property of polyvinyl chloride (PVC) plastics.It is compared with dimixo-octyl phthalate (DOP) conventional at present, has the advantages such as heat-resisting, cold-resistant, difficult volatilization, anti-extraction, flexibility and electrical insulation capability are good, demonstrates excellent persistence, resistance to soap water-based and low-temperature pliability in goods.
Trioctyl trimellitate (TOTM), molecular formula is C
33h
54o
6molecular weight is 546.78, and density is 0.988 ± 0.003g/mL, has thermotolerance, weather resistance and transport property good, intermiscibility and winter hardiness, require the goods such as the sheet material of heat-resisting and weather resistance, sheet material and gasket mainly for the production of 105 DEG C of level heatproof wire CABLE MATERIALS and other.
Epoxy soybean oil (ESO), light yellow sticky oily liquids, molecular formula C
57h
106o
10, molecular weight is 951.46, viscosity 325mpa.S, refractive index 1.473(25 DEG C), be that a kind of most popular nontoxic polyvinyl chloride softening agent is held concurrently stablizer.ESO and polyvinyl chloride resin consistency good, volatility is low, transport property is little, has excellent thermostability and light stability, and water tolerance and oil-proofness are also good, the physical strength that goods are good can be given, weathering resistance and electrical property, and nontoxicity are the chemical technology auxiliary agents for packaging material for food of international endorsement, all polrvinyl chloride products can be widely used in, also can be used for special ink, paint, coating, synthetic rubber and liquid composite stabilizing agent etc.
The composite use of dioctyl terephthalate, trioctyl trimellitate and epoxy soybean oil can make material have the advantages such as heat-resisting, cold-resistant, difficult volatilization, anti-extraction, flexibility and electrical insulation capability are good.
Preferably, described chlorinated polyvinyl chloride is the chlorinated polyvinyl chloride of chlorinity 61% ~ 66%.
Chlorinated polyvinyl chloride (CPVC), white powder, there is thermoplasticity, nonflammable, heat-drawn wire 102 ~ 118 DEG C, also there is chemical-resistant characteristic, the rigidity of height, intrinsic non-flame properties, excellent tensile strength, resistance to room light, weather characteristic and suitable density, the organic solvents such as ester class, ketone, aromatic hydrocarbon are soluble in than polyvinyl chloride, ageing-resistant, resistance to chemical attack and flame retardant resistance are all better than general polyvinyl chloride, for hot-water line, flame-retardant smoke inhibition chemical building material, flame retardant cable etc., also for coating, tamanori and corrosion resistant fiber fabric.
Preferably, described fire retardant is made up of antimonous oxide 0.5 ~ 4 part and 0.5 ~ 6 part, aluminium hydroxide.
Antimonous oxide is the fire retardant applied the earliest, be applicable to epoxy resin, urethane, chloroprene rubber, polystyrene, polyvinyl chloride, polyester etc., when being used alone, consumption wants large, flame retardant effect difference (unless flame retardant Halogen), when with halide (R.HX) and the used time then have good synergistic effect, flame retardant effect significantly improves.
Aluminium hydroxide is the maximum and most widely used inorganic fire-retarded additive of consumption.Aluminium hydroxide can not only be fire-retardant as fire retardant, and can prevent from being fuming, do not produce dropping, do not produce toxic gas, therefore, obtain and apply more widely, usage quantity is also increasing year by year, and use range comprises the industries such as thermosetting resin, thermoplastics, synthetic rubber, coating and building materials.
Antimonous oxide and aluminium hydroxide are inorganic environment-friendly fire retardant, and composite use can reach good flame retardant effect, can also improve Drawing abillity and mechanical property.
Preferably, described stablizer is made up of antimony organic class stablizer 0.5 ~ 5 part and metal soap stablizer 0.5 ~ 5 part.Antimony organic class stablizer is three (isooctyl mercaptoacetate) antimony or five (isooctyl mercaptoacetate) antimony; At least one in metal soap stablizer barium stearate, barium laurate, calcium stearate, calcium laurate, Zinc Stearate and zinc laurate.
Antimony organic class stablizer has outstanding initial stage form and aspect and form and aspect retentivity, and especially when low consumption, thermostability is better than organic tin, is particularly suitable for using with the PVC formula of twin screw extruder.
Metal soap stablizer is the second largest class main stabilizer that consumption is only second to lead salt, though its thermostability is not as lead salts, has oilness concurrently.Metal soap can be metal (lead, barium, cadmium, zinc, the calcium etc.) salt of lipid acid (lauric acid, stearic acid, naphthenic acid etc.), wherein conventional with stearate, is widely used in flexible PVC, as non-toxic type, transparent based article etc.
Antimony organic class stablizer and metal soap compound stabilizer use and can make material in the course of processing, have good dispersiveness, consistency and processing fluidity, make material good heat stability, have efficient weathering resistance.
Preferably, described impact modifier is made up of 0.5 ~ 5 part, styrene-butadiene rubber(SBR) and nitrile rubber 0.5 ~ 5 part.
Styrene-butadiene rubber(SBR) (SBR) is maximum general purpose synthetic rubber kind, is also one of rubber realizing suitability for industrialized production the earliest.It is divinyl and cinnamic random copolymers.Its physical mechanism performance, the use properties of processing characteristics and goods is close to natural rubber, some performance is as wear-resisting, heat-resisting, ageing-resistant and vulcanization rate is more excellent compared with natural rubber, with natural rubber and various synthetic rubber and use, the fields such as the production of tire, adhesive tape, sebific duct, electric wire, medical apparatus and various rubber item can be widely used in.Described styrene-butadiene rubber(SBR) to be butadiene unit content be 65% ~ 80% styrene-butadiene rubber(SBR), wear resisting property and the resistance toheat of the styrene-butadiene rubber(SBR) within the scope of this are better.
Paracril (NBR) is the random copolymers that divinyl and vinyl cyanide obtain through letex polymerization, there is excellent resistance to low temperature, the flexible PVC of its modification has the advantages such as low temperature elasticity is good, complete processing is excellent, and it also has good water tolerance, resistance to air loss and excellent adhesive property.Be widely used in system various oil resisting rubber goods, multiple oil seat gasket, pad, sleeve pipe, soft packaging, flexible rubber hose, printer's roll, cable gum material etc., in the industries such as automobile, aviation, oil, duplicating, become requisite resilient material.The polarity of paracril is very strong, generally not so good with the consistency of other polymkeric substance, but and cis-1,4-polybutadiene rubber, modified phenolic resins, polymkeric substance that polyvinyl chloride isopolarity is strong, particularly with chloride polymkeric substance, there is good consistency.Described paracril is the paracril of the fine unit content 20% ~ 45% of propylene, and wear resisting property and the resistance toheat of the nitrile rubber within the scope of this are better.
Styrene-butadiene rubber(SBR) and paracril can improve the heat-resisting of material and wear resisting property as the composite use of impact modifier, can also improve the consistency of material, impact and processibility.
Preferably, described lubricant is made up of saturated hydrocarbons lubricant 0.1 ~ 1.2 part and fatty alcohol type emollients 0.1 ~ 0.8 part.Saturated hydrocarbons lubricant is at least one in paraffin, oxidized petroleum wax, whiteruss, polyethylene wax, native paraffin and microcrystalline wax; Fatty alcohol type emollients is at least one in stearyl alcohol, soft lipidol and stearyl alcohol.
Polyethylene wax (PE wax), white solid, density is 0.96 ~ 0.98, and fusing point is 92 DEG C, molecular weight is 2000 ~ 5000, has viscosity low, and softening temperature is high, the performances such as hardness is good, nontoxic, Heat stability is good, high-temperature volatile is low, to the dispersiveness of pigment, and existing extremely excellent external lubricity, have again stronger internal lubrication effect, can improve the production efficiency of plastic working, anti humility performance is good at normal temperatures, chemical-resistant resistance ability is strong, and electrical property is excellent, can improve the outward appearance of finished product.
Saturated hydrocarbons lubricant is external lubricant, can reduce the friction of PVC melt and mould, machine barrel; Fatty alcohol type emollients is internal lubricant, can reduce the intermolecular friction of PVC melt; Two kinds of composite uses of lubricant can make material in the course of processing, improve the mobility of material and the release property of goods.
The preparation method that high heat-resisting high abrasion-resistant environmental protection PVC is material modified, comprises the steps:
(1) polyvinyl chloride resin, weighting agent, softening agent, chlorinated polyvinyl chloride, fire retardant, stablizer, impact modifier and mix lubricant is taken by the weight part of constitutive material;
(2) mixed raw material is put into high speed blender, at 100 ~ 140 DEG C of temperature, stir 15 ~ 25min;
(3) raw material after stirring is passed through twin screw extruder extruding pelletization, obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified.
Preferably, the extruder temperature of described twin screw extruder is: district's temperature 138 ~ 160 DEG C, two district's temperature 135 ~ 160 DEG C, three district's temperature 135 ~ 155 DEG C, four district's temperature 132 ~ 150 DEG CHe five district temperature 130 ~ 148 DEG C.
Beneficial effect of the present invention is: the material modified employing water-ground limestone of the height that the present invention obtains heat-resisting high abrasion-resistant environmental protection PVC and silicon-dioxide are as weighting agent, resistance toheat and the wear resisting property of material can be improved, surface luster and the profile pattern of material can also be improved; Adopt chlorinated polyvinyl chloride that material can be made to have excellent thermotolerance and wear resistance, the rigidity of material, non-flame properties and ageing resistance can also be improved; Meanwhile, adopt styrene-butadiene rubber(SBR) and nitrile rubber can improve the heat-resistant antifriction performance of material as impact modifier, the consistency of material, impact and processibility can also be improved; Adopt the composite use of dioctyl terephthalate, trioctyl trimellitate and epoxy soybean oil that material can be made to have the advantages such as heat-resisting, cold-resistant, difficult volatilization, anti-extraction, flexibility and electrical insulation capability are good; Adopting antimony organic class stablizer and metal soap compound stabilizer to use can make material in the course of processing, have good dispersiveness, consistency and processing fluidity, makes material good heat stability, has efficient weathering resistance; Adopt antimonous oxide and aluminium hydroxide can reach good flame retardant effect as the composite use of fire retardant, Drawing abillity and mechanical property can also be improved; Adopt saturated hydrocarbons lubricant and the composite use of fatty alcohol type emollients can make material in the course of processing, improve the mobility of material and the release property of goods.
The material modified properties of the height that the present invention obtains heat-resisting high abrasion-resistant environmental protection PVC all beyond national standard, heat-resistant antifriction excellent property, environmental protection, and intensity is high, good flame retardation effect, compression performance and toughness strong, processing characteristics is excellent, excellent combination property; The material modified smooth in appearance of height heat-resisting high abrasion-resistant environmental protection PVC that the present invention adopts multiple high-environmental material obtained, not containing phthalate, not containing polycyclic aromatic hydrocarbons, not containing free phenol, not halogen-containing flame retardant, without boron compound, environmental protection is better than the international standards such as European Union ROHS, DEHP, ATBC, can be widely used in the industrial circles such as automobile, electronic apparatus, instrument, weaving and building.
Preparation method's technique of the present invention is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
embodiment:
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Embodiment 1
Take raw material SG-5 type polyvinyl chloride resin 80Kg, water-ground limestone 10Kg, silica 1 5Kg, dioctyl terephthalate 15Kg, trioctyl trimellitate 5Kg, epoxy soybean oil 1Kg, the chlorinated polyvinyl chloride 1Kg of chlorinity 61%, antimonous oxide 0.5Kg, aluminium hydroxide 0.5Kg, three (isooctyl mercaptoacetate) antimony 0.5Kg, barium stearate 0.5Kg, styrene-butadiene rubber(SBR) 0.5Kg, nitrile rubber 0.5Kg, paraffin 0.1Kg, stearyl alcohol 0.1Kg mix; Mixed raw material is put into high speed blender, at 100 DEG C of temperature, stirs 25min; Raw material after stirring is passed through twin screw extruder extruding pelletization, and obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified; The extruder temperature of described twin screw extruder is: district's temperature 138 DEG C, two district's temperature 135 DEG C, three district's temperature 135 DEG C, four district's temperature 132 DEG CHe five district temperature 130 DEG C.The material modified mechanical and physical performance of the height that the present embodiment obtains heat-resisting high abrasion-resistant environmental protection PVC is as shown in table 1.
Embodiment 2
Take raw material SG-7 type polyvinyl chloride resin 90Kg, water-ground limestone 13Kg, silicon-dioxide 20Kg, dioctyl terephthalate 20Kg, trioctyl trimellitate 7Kg, epoxy soybean oil 2Kg, the chlorinated polyvinyl chloride 2Kg of chlorinity 62%, antimonous oxide 1Kg, aluminium hydroxide 2Kg, five (isooctyl mercaptoacetate) antimony 1Kg, barium laurate 1Kg, styrene-butadiene rubber(SBR) 1Kg, nitrile rubber 1Kg, oxidized petroleum wax 0.3Kg, soft lipidol 0.2Kg mix; Mixed raw material is put into high speed blender, at 140 DEG C of temperature, stirs 15min; Raw material after stirring is passed through twin screw extruder extruding pelletization, and obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified; The extruder temperature of described twin screw extruder is: district's temperature 140 DEG C, two district's temperature 140 DEG C, three district's temperature 135 DEG C, four district's temperature 135 DEG CHe five district temperature 135 DEG C.The material modified mechanical and physical performance of the height that the present embodiment obtains heat-resisting high abrasion-resistant environmental protection PVC is as shown in table 1.
Embodiment 3
Take raw material SG-5 type polyvinyl chloride resin 100Kg, water-ground limestone 16Kg, silicon-dioxide 25Kg, dioctyl terephthalate 25Kg, trioctyl trimellitate 9Kg, epoxy soybean oil 4Kg, the chlorinated polyvinyl chloride 4Kg of chlorinity 63%, antimonous oxide 2Kg, aluminium hydroxide 3Kg, three (isooctyl mercaptoacetate) antimony 2Kg, calcium stearate 2Kg, styrene-butadiene rubber(SBR) 2Kg, nitrile rubber 2Kg, whiteruss 0.5Kg, stearyl alcohol 0.4Kg mix; Mixed raw material is put into high speed blender, at 120 DEG C of temperature, stirs 20min; Raw material after stirring is passed through twin screw extruder extruding pelletization, and obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified; The extruder temperature of described twin screw extruder is: district's temperature 160 DEG C, two district's temperature 160 DEG C, three district's temperature 155 DEG C, four district's temperature 150 DEG CHe five district temperature 148 DEG C.The material modified mechanical and physical performance of the height that the present embodiment obtains heat-resisting high abrasion-resistant environmental protection PVC is as shown in table 1.
Embodiment 4
Take raw material SG-5 type polyvinyl chloride resin 50Kg, SG-7 type polyvinyl chloride resin 50Kg, water-ground limestone 19Kg, silicon-dioxide 25Kg, dioctyl terephthalate 25Kg, trioctyl trimellitate 11Kg, epoxy soybean oil 6Kg, the chlorinated polyvinyl chloride 6Kg of chlorinity 64%, antimonous oxide 2.5Kg, aluminium hydroxide 4Kg, five (isooctyl mercaptoacetate) antimony 3Kg, calcium laurate 3Kg, styrene-butadiene rubber(SBR) 3Kg, nitrile rubber 3Kg, polyethylene wax 0.7Kg, stearyl alcohol 0.6Kg mix; Mixed raw material is put into high speed blender, at 120 DEG C of temperature, stirs 20min; Raw material after stirring is passed through twin screw extruder extruding pelletization, and obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified; The extruder temperature of described twin screw extruder is: district's temperature 155 DEG C, two district's temperature 155 DEG C, three district's temperature 150 DEG C, four district's temperature 148 DEG CHe five district temperature 145 DEG C.The material modified mechanical and physical performance of the height that the present embodiment obtains heat-resisting high abrasion-resistant environmental protection PVC is as shown in table 1.
Embodiment 5
Take raw material SG-7 type polyvinyl chloride resin 110Kg, water-ground limestone 22Kg, silicon-dioxide 30Kg, dioctyl terephthalate 30Kg, trioctyl trimellitate 13Kg, epoxy soybean oil 8Kg, the chlorinated polyvinyl chloride 8Kg of chlorinity 65%, antimonous oxide 3Kg, aluminium hydroxide 5Kg, three (isooctyl mercaptoacetate) antimony 4Kg, Zinc Stearate 4Kg, styrene-butadiene rubber(SBR) 4Kg, nitrile rubber 4Kg, native paraffin 0.9Kg, soft lipidol 0.7Kg mix; Mixed raw material is put into high speed blender, at 100 DEG C of temperature, stirs 25min; Raw material after stirring is passed through twin screw extruder extruding pelletization, and obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified; The extruder temperature of described twin screw extruder is: district's temperature 150 DEG C, two district's temperature 150 DEG C, three district's temperature 145 DEG C, four district's temperature 140 DEG CHe five district temperature 140 DEG C.The material modified mechanical and physical performance of the height that the present embodiment obtains heat-resisting high abrasion-resistant environmental protection PVC is as shown in table 1.
Embodiment 6
Take raw material SG-5 type polyvinyl chloride resin 60Kg, SG-7 type polyvinyl chloride resin 60Kg, water-ground limestone 25Kg, silicon-dioxide 35Kg, dioctyl terephthalate 35Kg, trioctyl trimellitate 15Kg, epoxy soybean oil 10Kg, the chlorinated polyvinyl chloride 10Kg of chlorinity 66%, antimonous oxide 4Kg, aluminium hydroxide 6Kg, five (isooctyl mercaptoacetate) antimony 5Kg, zinc laurate 5Kg, styrene-butadiene rubber(SBR) 5Kg, nitrile rubber 5Kg, microcrystalline wax 1.2Kg, stearyl alcohol 0.8Kg mix; Mixed raw material is put into high speed blender, at 140 DEG C of temperature, stirs 15min; Raw material after stirring is passed through twin screw extruder extruding pelletization, and obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified; The extruder temperature of described twin screw extruder is: district's temperature 145 DEG C, two district's temperature 145 DEG C, three district's temperature 140 DEG C, four district's temperature 135 DEG CHe five district temperature 135 DEG C.The material modified mechanical and physical performance of the height that the present embodiment obtains heat-resisting high abrasion-resistant environmental protection PVC is as shown in table 1.
The mechanical and physical performance that the height heat-resisting high abrasion-resistant environmental protection PVC that table 1 embodiment 1 ~ 6 obtains is material modified
As can be seen from Table 1, the height that the present invention obtains heat-resisting high abrasion-resistant environmental protection PVC material modified due to have employed water-ground limestone and silicon-dioxide as weighting agent, adopt chlorinated polyvinyl chloride, adopt styrene-butadiene rubber(SBR) and nitrile rubber as impact modifier, make this material modified heat-resistant antifriction excellent property; The material modified properties of the height that the present invention obtains heat-resisting high abrasion-resistant environmental protection PVC is all beyond national standard, and intensity is high, good flame retardation effect, compression performance and toughness strong, processing characteristics is excellent, excellent combination property; The material modified smooth in appearance of height heat-resisting high abrasion-resistant environmental protection PVC that the present invention adopts multiple high-environmental material obtained, not containing phthalate, not containing polycyclic aromatic hydrocarbons, not containing free phenol, not halogen-containing flame retardant, without boron compound, environmental protection is better than the international standards such as European Union ROHS, DEHP, ATBC, can be widely used in the industrial circles such as automobile, electronic apparatus, instrument, weaving and building.
Preparation method's technique of the present invention is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (4)
1. one kind high heat-resisting high abrasion-resistant environmental protection PVC is material modified, it is characterized in that: it is made up of the raw material of following weight part:
Polyvinyl chloride resin 80 ~ 120 parts
Weighting agent 25 ~ 60 parts
21 ~ 60 parts, softening agent
Chlorinated polyvinyl chloride 1 ~ 10 part
Fire retardant 1 ~ 10 part
Stablizer 1 ~ 10 part
Impact modifier 1 ~ 10 part
Lubricant 0.2 ~ 2 part;
Wherein, described polyvinyl chloride resin is SG-5 type polyvinyl chloride resin and/or SG-7 type polyvinyl chloride resin; Described weighting agent is made up of water-ground limestone 10 ~ 25 parts and silica 15 ~ 35 parts;
Described softening agent is made up of dioctyl terephthalate 15 ~ 35 parts, trioctyl trimellitate 5 ~ 15 parts and epoxy soybean oil 1 ~ 10 part;
Described fire retardant is made up of antimonous oxide 0.5 ~ 4 part and 0.5 ~ 6 part, aluminium hydroxide;
Described stablizer is made up of antimony organic class stablizer 0.5 ~ 5 part and metal soap stablizer 0.5 ~ 5 part;
Described lubricant is made up of saturated hydrocarbons lubricant 0.1 ~ 1.2 part and fatty alcohol type emollients 0.1 ~ 0.8 part.
2. the high heat-resisting high abrasion-resistant environmental protection PVC of one according to claim 1 is material modified, it is characterized in that: described chlorinated polyvinyl chloride is the chlorinated polyvinyl chloride of chlorinity 61% ~ 66%.
3. the high heat-resisting high abrasion-resistant environmental protection PVC of one according to claim 1 is material modified, it is characterized in that: described impact modifier is made up of 0.5 ~ 5 part, styrene-butadiene rubber(SBR) and paracril 0.5 ~ 5 part.
4. the preparation method that a kind of high heat-resisting high abrasion-resistant environmental protection PVC described in any one of claim 1 ~ 3 is material modified, is characterized in that: comprise the steps:
(1) polyvinyl chloride resin, weighting agent, softening agent, chlorinated polyvinyl chloride, fire retardant, stablizer, impact modifier and mix lubricant is taken by the weight part of constitutive material;
(2) mixed raw material is put into high speed blender, at 100 ~ 140 DEG C of temperature, stir 15 ~ 25min;
(3) raw material after stirring is passed through twin screw extruder extruding pelletization, obtained high heat-resisting high abrasion-resistant environmental protection PVC is material modified;
Wherein, the extruder temperature of described twin screw extruder is: district's temperature 138 ~ 160 DEG C, two district's temperature 135 ~ 160 DEG C, three district's temperature 135 ~ 155 DEG C, four district's temperature 132 ~ 150 DEG CHe five district temperature 130 ~ 148 DEG C.
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