CN103073816B - Heat-resisting and cold-resisting environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof - Google Patents
Heat-resisting and cold-resisting environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof Download PDFInfo
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- CN103073816B CN103073816B CN201210569126.1A CN201210569126A CN103073816B CN 103073816 B CN103073816 B CN 103073816B CN 201210569126 A CN201210569126 A CN 201210569126A CN 103073816 B CN103073816 B CN 103073816B
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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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Abstract
The invention relates to the technical field of polyvinyl chloride composite materials, and specifically relates to a heat-resisting and cold-resisting environment-friendly PVC (polyvinyl chloride) modified material and a preparation method thereof. The modified material comprises the raw materials in parts by weight as follows: 80-120 parts of PVC resins, 15-35 parts of a filling agent, 40-80 parts of a plasticizer, 1-10 parts of a fire retardant agent, 1-10 parts of a stabilizing agent, 5-15 parts of impact modifier and 0.2-2 parts of a lubricating agent. The preparation method comprises the steps that the raw materials are weighed in parts by weight to be mixed, after the stirring, extruding granulation is performed through a double screw extrusion machine, and the modified material is obtained. The prepared modified material has the excellent heat-resisting cold-resisting performance, the highest use temperature reaches 135 DEG C, and the lowest use temperature reaches subzero 65 DEG C; and meanwhile the modified material has the advantages of environmental friendliness, high intensity, good fire retardant effect, strong compression performance and toughness, and excellent processing performance and comprehensive performance. The preparation method is simple in processing, convenient to operate and control, stable in quality and high in production efficiency, so that the large-scale industrial production can be realized.
Description
Technical field
The present invention relates to polyvinyl chloride composite materials technical field, be specifically related to a kind of heat-resisting cold-resistant environment-friendly PVC material modified and preparation method thereof.
Background technology
Polyvinyl chloride (PVC) is one of industrialization the earliest, broad-spectrum general-purpose thermoplastic plastic, the advantage such as it has, and quality is light, intensity is high, insulation, fire-retardant, corrosion-resistant, high comprehensive performance, cheap and starting material wide material sources; But also there is following shortcoming: 1, poor toughness, very easily embrittlement while being hit, therefore can not be used as structured material, and in addition, the fragility temperature influence of polyvinyl chloride is very large, and general PVC goods are limited to-15 ℃ under using, and are limited to-30 ℃ under the use of flexible PVC; 2, poor heat stability, it just starts to decomposite HCl in the time of 100 ℃, decomposes rapidlyer during higher than 150 ℃, and the melt temperature of PVC is about 210 ℃; 3, the viscosity of PVC is high, and mobility extreme difference has limited its use to a certain extent.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 200910116208.9 to disclose a kind of PVC material and preparation method thereof, and described PVC material comprises following material and weight part: 100 parts of PVC, 2～8 parts of stablizers, 2～6 parts of processing aids, 1.5～2.5 lubricants, 4～12 parts of fillers, 0.05～1 part of tinting material.
Application number is 201110306510.8 to disclose a kind of proprietary material of pvc pipe material, by forming according to the component of weight part as follows: 100 parts of polyvinyl chloride resins, 4 ~ 16 parts of nitrile rubber/nano-calcium carbonate composite powder rubber, 2.5 ~ 7 parts of chlorinatedpolyethylenees, 0.4 ~ 6 part of thermo-stabilizer, 0.3 ~ 3.8 part of 1.1 ~ 3.5 parts of lubricants and tinting material.
Application number is 201110427270.7 to disclose a kind of antistatic PVC particulate material and preparation method thereof, raw material by following weight proportioning is prepared from: PVC SG～3 90～100 part, 70～85 parts of plasticizer DOPs, 4～5.5 parts of one package stabilizers, 1～3 part of stearate, 35～48 parts of weighting agents, 0.2～0.5 part of initiator DCP, 3～5 parts of reactive monomer TAIC, 4～6 parts, oxyethane, 1～3 part of ethylene oxide.
The performance index of existing most of PVC material are all to meet the basic demand of national standard, for a lot of particular surroundingss as under the too not large environment of high-low temperature difference, current PVC material property still can not meet the demand of life-time service under high temperature and cold condition reliably, high temperature resistantly the highlyest also can only reach 105 ℃, low temperature resistantly minimumly also can only reach-30 ℃, the heat-resisting cold tolerance of PVC material also needs further to optimize improvement; In addition, all there is quite serious pollution in existing PVC jacketed 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 existing in prior art, the object of the present invention is to provide a kind of heat-resisting cold-resistant environment-friendly PVC material modified, the material modified heat-resisting cold tolerance that the present invention makes is good, environmental protection, and intensity is high, good flame retardation effect, compression performance and toughness are strong, processing characteristics is good, excellent combination property.
Another object of the present invention is to provide a kind of heat-resisting cold-resistant environment-friendly PVC material modified preparation method, preparation method's technique of the present invention is simple, convenient operation and control, and 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 heat-resisting cold-resistant environment-friendly PVC is material modified, and it is comprised of the raw material of following weight part:
80 ~ 120 parts of polyvinyl chloride resins
15 ~ 35 parts of weighting agents
40 ~ 80 parts, softening agent
1 ~ 10 part of fire retardant
1 ~ 10 part of stablizer
5 ~ 15 parts of impact modifiers
0.2 ~ 2 part of lubricant.
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 is moulded S-70 or eastern Cao TG-800, is white powder or white particles shape, and 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 comprised of with 7.5 ~ 12.5 parts of light calcium carbonates 7.5 ~ 12.5 parts of water-ground limestones.
Water-ground limestone is 1250 orders, white powder, conventional powdery mineral filler, have that chemical purity is high, inertia is large, be difficult for chemical reaction, Heat stability is good, at 400 ℃, can not decompose below, 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.
Light calcium carbonate is 2800 orders, white powder or colourless crystallization, in plastics, can play a kind of skeleton function, stability to plastics size has great role, can improve the hardness of goods, surface luster and the profile pattern that can also improve goods, can also improve thermotolerance, replaces expensive white pigment and play certain whitening effect.
Composite use can improve hardness and the thermotolerance of material as weighting agent for water-ground limestone and light calcium carbonate, can also improve surface luster and the profile pattern of material.
Preferably, described softening agent is polyester plasticizer UN380.
Polyester plasticizer UN380 is a kind of heat-resisting cold resistant plasticizer of environmental protection, there is outstanding resistance to elevated temperatures (being better than trioctyl trimellitate TOTM), weather resistance, can be for the production of high-quality electric wire, auto parts machinery, interior trim, the plastic cement industry such as high quality artificial leather, edible and medical package material; Also there is outstanding resistance to low temperature (being better than Octyl adipate DOA), can take into account high low temperature requirement uses as primary plasticizer simultaneously, plasticization effect and TOTM are suitable, can also make material have the advantages such as difficult volatilization, anti-extraction, flexibility and electrical insulation capability are good.
Preferably, described fire retardant is comprised of with 0.5 ~ 6 part of lime borate 0.5 ~ 4 part of antimony peroxide.
Antimony peroxide is a kind of Sb system fire retardant, be applicable to epoxy resin, urethane, chloroprene rubber, polystyrene, polyvinyl chloride, polyester etc., while using separately, consumption wants large, flame retardant effect poor (unless flame retardant Halogen), when having good synergistic effect with halogen compound (R.HX) used time, flame retardant effect obviously improves.
Lime borate is white powder solid, lime borate is the fire retardant that cost is minimum, in coating, there is antirust, mildew-resistant, fungi-proofing, anti-pollution, anti-efflorescence, prevent variable color, the effect such as fire-retardant, it is multi-functional rust-stabilising pigment, for priming paint, finish paint, lime borate can also be for industry such as white pigment, pottery, glass, papermaking, rubber and plastics.
Antimony peroxide and lime borate 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 comprised of with 0.5 ~ 5 part of hydrotalcite stablizer 0.5 ~ 5 part of metal soap stablizer.At least one in metal soap stablizer barium stearate, barium laurate, calcium stearate, calcium laurate, Zinc Stearate and zinc laurate; Hydrotalcite stablizer is hydrotalcite.
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.
Hydrotalcite stablizer has high thermal stability: distinctive sour absorption mechanism, has caused its thermostability higher than the thermostability of lead base; High transparent: have identical specific refractory power with PVC; High-insulativity: by anion exchange reaction, absorbed muriate can not discharge, and insulativity is splendid; High security: metal soap stablizer can be applicable in the food pack of polymer materials; Good weathering resistance (environmental compatibility is strong), can not produce sulfide staining: can be used in conjunction with various thermo-stabilizers.
Metal soap stablizer and hydrotalcite compound stabilizer are used 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.
2 ~ 7 parts of the ethylene-vinyl acetate copolymers of 3 ~ 8 parts of chlorinatedpolyethylenees that preferably, described impact modifier is 25% ~ 45% by chlorinity and vinyl acetate between to for plastic unit content 5% ~ 25% form.
Chlorinatedpolyethylene (CPE) is a kind of properties-correcting agent of thermoplastics, has good over-all properties.In polyvinyl chloride (PVC) resin, add appropriate CPE, can reduce resin melt viscosity, improve mobility, improve the processing characteristics of plastics; Can also improve PVC shock strength, resistance to low temperature, weather resisteant energy, extend work-ing life of goods.CPE is added in calcic-plastic composite material, not only can replace Plasticizer DBP, also contributes to the dispersed of calcium carbonate and polyvinyl chloride resin.
Ethylene-vinyl acetate copolymer (EVA) can be used as the impact modifying agent of PVC, has good flexibility, obdurability, lower temperature resistance (58 ℃ still have pliability), weathering resistance, stress cracking resistance, heat sealer, agglutinating value(of coal), the transparency and glossiness; Also there is the elasticity as rubber, good chemical stability, thermostability (229 ~ 230 ℃ of heat decomposition temperatures), ozone resistance, nontoxicity, good processibility and dyeability simultaneously; Fine with the miscibility of filler, even if fill more filler, also unlikely its physical and mechanical property that has a strong impact on.
EVA is as the impact modifying agent of PVC, its effect is different with the content of vinyl acetate between to for plastic in multipolymer, when the content of vinyl acetate between to for plastic is low, poor with the consistency of PVC, reinforced effects is poor, and goods are opaque, increase along with vinyl acetate between to for plastic unit content, the consistency of multipolymer and PVC improves, and reinforced effects improves, and the goods transparency is also better; But the content of vinyl acetate between to for plastic also can not be too high, during vinyl acetate between to for plastic unit content 5% ~ 25%, can obviously improve the shock strength of PVC, compare with the impact modifying agent that contains carbon-carbon double bond, also there is the good advantage of ageing resistance.
Composite use can improve the high temperature resistant and resistance to low temperature of material as impact modifier for chlorinatedpolyethylene and ethylene-vinyl acetate copolymer, can also reduce material melt viscosity, improve mobility, improve the processing characteristics of plastics, improve material shock strength, weather resisteant energy, extend work-ing life of goods.
Preferably, described lubricant is comprised of with 0.1 ~ 0.8 part of fatty acid ester series lubricant agent 0.1 ~ 1.2 part of saturated hydrocarbons lubricant.Saturated hydrocarbons lubricant is at least one in paraffin, oxidized petroleum wax, whiteruss, polyethylene wax, native paraffin and microcrystalline wax; Fatty acid ester series lubricant agent is at least one in pentaerythritol stearate, butyl stearate, sebacic acid oleyl alcohol ester, stearin, stearic acid monoglycerides and tripalmitin.
Polyethylene wax (PE wax), white solid, density is 0.96 ~ 0.98, fusing point is 92 ℃, 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, the dispersiveness to pigment, existing extremely excellent external lubrication, 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 good, 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 acid ester series lubricant agent 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 material modified preparation method of heat-resisting cold-resistant environment-friendly PVC, comprises the steps:
(1) by the weight part of constitutive material, take polyvinyl chloride resin, weighting agent, softening agent, fire retardant, stablizer, impact modifier and mix lubricant;
(2) mixed raw material is put into high speed blender, at 100 ~ 140 ℃ of temperature, stir 15 ~ 25min;
(3) raw material after stirring is passed through to twin screw extruder extruding pelletization, make heat-resisting cold-resistant environment-friendly PVC material modified.
Preferably, the extruder temperature of described twin screw extruder is: 138 ~ 160 ℃ of district's temperature, 135 ~ 160 ℃ of two district's temperature, 135 ~ 155 ℃ of three district's temperature, 130 ~ 148 ℃ of four district's temperature 132 ~ 150 ℃He five district's temperature.
Beneficial effect of the present invention is: the material modified employing polyester plasticizer of the heat-resisting cold-resistant environment-friendly PVC UN380 that the present invention makes can obviously improve high temperature resistant, the resistance to low temperature of material as heat-resisting cold resistant plasticizer, can also make material have the advantages such as difficult volatilization, anti-extraction, flexibility and electrical insulation capability are good; Composite use can improve the heat-resisting cold tolerance of material as impact modifier to adopt chlorinatedpolyethylene and ethylene-vinyl acetate copolymer, can also reduce material melt viscosity, improve mobility, improve the processing characteristics of plastics, improve material shock strength, weather resisteant energy, extend work-ing life of goods; Composite use can improve hardness and the thermotolerance of material as weighting agent to adopt water-ground limestone and light calcium carbonate, can also improve surface luster and the profile pattern of material; Adopt metal soap stablizer and hydrotalcite compound stabilizer to use and can make material in the course of processing, have good dispersiveness, consistency and processing fluidity, make material good heat stability, there is efficient weathering resistance; Composite use can reach good flame retardant effect as fire retardant to adopt antimony peroxide and lime borate, can also improve Drawing abillity and mechanical property; Adopt saturated hydrocarbons lubricant and the composite use of fatty acid ester series lubricant agent can make material in the course of processing, improve the mobility of material and the release property of goods.
The material modified properties of heat-resisting cold-resistant environment-friendly PVC that the present invention makes has all exceeded national standard, heat-resisting cold tolerance is good, maximum operation (service) temperature reaches 135 ℃, minimum use temperature reaches-65 ℃, environmental protection, and intensity is high, good flame retardation effect, compression performance and toughness are strong, and processing characteristics is good, excellent combination property; The material modified smooth in appearance of heat-resisting cold-resistant environment-friendly PVC that the present invention adopts multiple high-environmental material to make, not containing phthalate, not containing polycyclic aromatic hydrocarbons, not containing free phenol, halogen-containing flame retardant not, without boron compound, environmental protection is better than the international standards such as the ROHS of European Union, 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, convenient operation and control, and steady quality, production efficiency is high, can large-scale industrial production.
embodiment:
For the ease of those skilled in the art's understanding, 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 7.5Kg, light calcium carbonate 7.5Kg, polyester plasticizer UN380 40Kg, antimony peroxide 0.5Kg, lime borate 0.5Kg, barium stearate 0.5Kg, hydrotalcite 0.5Kg, chlorinity is 25% chlorinatedpolyethylene 3Kg, the ethylene-vinyl acetate copolymer 2Kg of vinyl acetate between to for plastic unit content 5%, and paraffin 0.1Kg, pentaerythritol stearate 0.1Kg mix; Mixed raw material is put into high speed blender, at 100 ℃ of temperature, stir 25min; Raw material after stirring, by twin screw extruder extruding pelletization, is made to heat-resisting cold-resistant environment-friendly PVC material modified; The extruder temperature of described twin screw extruder is: 138 ℃ of district's temperature, 135 ℃ of two district's temperature, 135 ℃ of three district's temperature, 130 ℃ of four district's temperature 132 ℃He five district's temperature.The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that the present embodiment makes is as shown in table 1.
Embodiment 2
Take raw material SG-7 type polyvinyl chloride resin 90Kg, water-ground limestone 10Kg, light calcium carbonate 10Kg, polyester plasticizer UN380 48Kg, antimony peroxide 1Kg, lime borate 2Kg, barium laurate 1Kg, hydrotalcite 1Kg, chlorinity is 30% chlorinatedpolyethylene 4Kg, the ethylene-vinyl acetate copolymer 3Kg of vinyl acetate between to for plastic unit content 10%, and oxidized petroleum wax 0.3Kg, butyl stearate 0.2Kg mix; Mixed raw material is put into high speed blender, at 140 ℃ of temperature, stir 15min; Raw material after stirring, by twin screw extruder extruding pelletization, is made to heat-resisting cold-resistant environment-friendly PVC material modified; The extruder temperature of described twin screw extruder is: 140 ℃ of district's temperature, 140 ℃ of two district's temperature, 135 ℃ of three district's temperature, 135 ℃ of four district's temperature 135 ℃He five district's temperature.The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that the present embodiment makes is as shown in table 1.
Embodiment 3
Take raw material SG-5 type polyvinyl chloride resin 100Kg, water-ground limestone 12.5Kg, light calcium carbonate 12.5Kg, polyester plasticizer UN380 56Kg, antimony peroxide 2Kg, lime borate 3Kg, calcium stearate 2Kg, hydrotalcite 2Kg, chlorinity is 35% chlorinatedpolyethylene 5Kg, the ethylene-vinyl acetate copolymer 4Kg of vinyl acetate between to for plastic unit content 15%, and whiteruss 0.5Kg, sebacic acid oleyl alcohol ester 0.4Kg mix; Mixed raw material is put into high speed blender, at 120 ℃ of temperature, stir 20min; Raw material after stirring, by twin screw extruder extruding pelletization, is made to heat-resisting cold-resistant environment-friendly PVC material modified; The extruder temperature of described twin screw extruder is: 160 ℃ of district's temperature, 160 ℃ of two district's temperature, 155 ℃ of three district's temperature, 148 ℃ of four district's temperature 150 ℃He five district's temperature.The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that the present embodiment makes 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 12.5Kg, light calcium carbonate 12.5Kg, polyester plasticizer UN380 64Kg, antimony peroxide 2.5Kg, lime borate 4Kg, calcium laurate 3Kg, hydrotalcite 3Kg, chlorinity is 35% chlorinatedpolyethylene 6Kg, the ethylene-vinyl acetate copolymer 5Kg of vinyl acetate between to for plastic unit content 15%, and polyethylene wax 0.7Kg, stearin 0.6Kg mix; Mixed raw material is put into high speed blender, at 120 ℃ of temperature, stir 20min; Raw material after stirring, by twin screw extruder extruding pelletization, is made to heat-resisting cold-resistant environment-friendly PVC material modified; The extruder temperature of described twin screw extruder is: 155 ℃ of district's temperature, 155 ℃ of two district's temperature, 150 ℃ of three district's temperature, 145 ℃ of four district's temperature 148 ℃He five district's temperature.The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that the present embodiment makes is as shown in table 1.
Embodiment 5
Take raw material SG-7 type polyvinyl chloride resin 110Kg, water-ground limestone 15Kg, light calcium carbonate 15Kg, polyester plasticizer UN380 72Kg, antimony peroxide 3Kg, lime borate 5Kg, Zinc Stearate 4Kg, hydrotalcite 4Kg, chlorinity is 40% chlorinatedpolyethylene 7Kg, the ethylene-vinyl acetate copolymer 6Kg of vinyl acetate between to for plastic unit content 20%, and native paraffin 0.9Kg, stearic acid monoglycerides 0.7Kg mix; Mixed raw material is put into high speed blender, at 100 ℃ of temperature, stir 25min; Raw material after stirring, by twin screw extruder extruding pelletization, is made to heat-resisting cold-resistant environment-friendly PVC material modified; The extruder temperature of described twin screw extruder is: 150 ℃ of district's temperature, 150 ℃ of two district's temperature, 145 ℃ of three district's temperature, 140 ℃ of four district's temperature 140 ℃He five district's temperature.The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that the present embodiment makes 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 12.5Kg, light calcium carbonate 12.5Kg, polyester plasticizer UN380 80Kg, antimony peroxide 4Kg, lime borate 6Kg, zinc laurate 5Kg, hydrotalcite 5Kg, chlorinity is 45% chlorinatedpolyethylene 8Kg, the ethylene-vinyl acetate copolymer 7Kg of vinyl acetate between to for plastic unit content 25%, and microcrystalline wax 1.2Kg, tripalmitin 0.8Kg mix; Mixed raw material is put into high speed blender, at 140 ℃ of temperature, stir 15min; Raw material after stirring, by twin screw extruder extruding pelletization, is made to heat-resisting cold-resistant environment-friendly PVC material modified; The extruder temperature of described twin screw extruder is: 145 ℃ of district's temperature, 145 ℃ of two district's temperature, 140 ℃ of three district's temperature, 135 ℃ of four district's temperature 135 ℃He five district's temperature.The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that the present embodiment makes is as shown in table 1.
The material modified mechanical and physical performance of heat-resisting cold-resistant environment-friendly PVC that table 1 embodiment 1 ~ 6 makes
As can be seen from Table 1, heat-resisting cold-resistant environment-friendly PVC that the present invention makes material modified due to adopted polyester plasticizer UN380 as heat-resisting cold resistant plasticizer, chlorinatedpolyethylene and ethylene-vinyl acetate copolymer as impact modifier, make this material modified heat-resisting cold tolerance good, maximum operation (service) temperature reaches 135 ℃, and minimum use temperature reaches-65 ℃; The material modified properties of heat-resisting cold-resistant environment-friendly PVC that the present invention makes has all exceeded national standard, and intensity is high, good flame retardation effect, and compression performance and toughness are strong, and processing characteristics is good, excellent combination property; The material modified smooth in appearance of heat-resisting cold-resistant environment-friendly PVC that the present invention adopts multiple high-environmental material to make, not containing phthalate, not containing polycyclic aromatic hydrocarbons, not containing free phenol, halogen-containing flame retardant not, without boron compound, environmental protection is better than the international standards such as the ROHS of European Union, 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, convenient operation and control, and steady quality, production efficiency is high, can large-scale industrial production.
Above-described embodiment is preferably implementation of the present invention, 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 (2)
1. a heat-resisting cold-resistant environment-friendly PVC is material modified, it is characterized in that: it is comprised of the raw material of following weight part:
80 ~ 120 parts of polyvinyl chloride resins
15 ~ 35 parts of weighting agents
40 ~ 80 parts, softening agent
1 ~ 10 part of fire retardant
1 ~ 10 part of stablizer
5 ~ 15 parts of impact modifiers
0.2 ~ 2 part of lubricant;
Described polyvinyl chloride resin is SG-5 type polyvinyl chloride resin and/or SG-7 type polyvinyl chloride resin;
Described weighting agent is comprised of with 7.5 ~ 12.5 parts of light calcium carbonates 7.5 ~ 12.5 parts of water-ground limestones;
Described softening agent is polyester plasticizer UN380;
Described fire retardant is comprised of with 0.5 ~ 6 part of lime borate 0.5 ~ 4 part of antimony peroxide;
Described stablizer is comprised of with 0.5 ~ 5 part of hydrotalcite stablizer 0.5 ~ 5 part of metal soap stablizer;
2 ~ 7 parts of the ethylene-vinyl acetate copolymers of 3 ~ 8 parts of chlorinatedpolyethylenees that described impact modifier is 25% ~ 45% by chlorinity and vinyl acetate between to for plastic unit content 5% ~ 25% form;
Described lubricant is comprised of with 0.1 ~ 0.8 part of fatty acid ester series lubricant agent 0.1 ~ 1.2 part of saturated hydrocarbons lubricant.
2. the material modified preparation method of a kind of heat-resisting cold-resistant environment-friendly PVC claimed in claim 1, is characterized in that: comprise the steps:
(1) by the weight part of constitutive material, take polyvinyl chloride resin, weighting agent, softening agent, fire retardant, stablizer, impact modifier and mix lubricant;
(2) mixed raw material is put into high speed blender, at 100 ~ 140 ℃ of temperature, stir 15 ~ 25min;
(3) raw material after stirring is passed through to twin screw extruder extruding pelletization, make heat-resisting cold-resistant environment-friendly PVC material modified;
Wherein, the extruder temperature of described twin screw extruder is: 138 ~ 160 ℃ of district's temperature, 135 ~ 160 ℃ of two district's temperature, 135 ~ 155 ℃ of three district's temperature, 130 ~ 148 ℃ of four district's temperature 132 ~ 150 ℃He five district's temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210569126.1A CN103073816B (en) | 2012-12-25 | 2012-12-25 | Heat-resisting and cold-resisting environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210569126.1A CN103073816B (en) | 2012-12-25 | 2012-12-25 | Heat-resisting and cold-resisting environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103073816A CN103073816A (en) | 2013-05-01 |
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| CN100368473C (en) * | 2004-09-30 | 2008-02-13 | 中国石油化工股份有限公司 | Flame-retarding smoke-inhibiting PVC composition used for electric line and electric cable and preparation method thereof |
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Address after: Ye Wu industrial zone Dalingshan Meilin Village 523820 Guangdong city of Dongguan Province Patentee after: Guangdong Qi Long Technology Co., Ltd. Address before: Ye Wu industrial zone Dalingshan Meilin Village 523820 Guangdong city of Dongguan Province Patentee before: Dongguan Qilong Electricity Co., Ltd. |