CN109810429A - A kind of plastic-aluminum co-extrusion section bar weather-proof foamed plastic and preparation method thereof - Google Patents
A kind of plastic-aluminum co-extrusion section bar weather-proof foamed plastic and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of plastic-aluminum co-extrusion section bar weather-proof foamed plastics and preparation method thereof, a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar, based on parts by weight, including following component: 50-60 parts of polyvinyl chloride resin, 15-20 parts of calcium carbonate, 0.1-0.2 parts of antioxidant, 0.12-0.18 parts of ultraviolet absorbing agent, 4-6 parts of toughened master batch, 2-3 parts of stabilizer, 0.5-1 parts of lubricant, 0.5-0.7 parts of foaming agent, 1.2-1.8 parts of plasticizer, 4-6 parts of titanium dioxide and 0.2-0.25 parts of colorant.The present invention passes through antioxidant, ultraviolet absorbing agent and stabilizer, the weatherability and light aging property of PVC material can be significantly improved, the mechanical strength and flexibility of foamed plastic can be improved in the addition of toughened master batch, make foamed plastic under long-term solar radiation, it is still able to maintain good intensity, extends the service life of foamed plastic.
Description
Technical field
The present invention relates to technical field of polymer material processing, more specifically, it is related to a kind of plastic-aluminum co-extrusion section bar use
Weather-proof foamed plastic and preparation method thereof.
Background technique
Plastic-aluminum co-extrusion section bar is that the aluminium alloy extrusions of all cornice fixing grooves serves as a contrast (referred to as " aluminium lining "), is existed by coextrusion process
Aluminium serves as a contrast the foamed plastic of surface cladding layer of surface hard, and foamed plastic enters the profile being integrally formed in fixing groove, aluminium
The purposes of plastic co-extrusion section bar is generally used for door, window；Its foamed plastic is usually to polymerize using PVC as primary raw material with other auxiliary agents
It forms；Since the thermal coefficient of foamed plastic is lower than ordinary rigid PVC, the thermal insulation property of plastic-aluminum co-extrusion section bar is better than common
Plastic material；And since foamed plastic has the abscess of many honeycomb structures, plastic-aluminum co-extrusion section bar also has well
Sound insulation value.
In the prior art, application No. is 200510007264.0 patent application documents, disclose a kind of PVC aluminium plastic co-extruding
Profile and preparation method thereof, its preparation method include the following steps: A. ingredient feeding: mixing polyvinyl chloride resin, auxiliary agent by formula
It closes, uniformly flows into extruder from loading hopper；B. Lining treatment: after inner lining surface coating viscosity glue agent, heating enters extrusion by conveyer belt
Machine co-extruding mould；C. co-extrusion, Vacuum shaping, cooling and shaping: PVC mixture in extruder after heated plasticizing and liner simultaneously
By co-extruding mould, PVC mixture hot extrusion is pressed onto inner lining surface, is made up of Vacuum shaping, cooling and shaping, traction.
Since stability of the polyvinyl chloride to light and heat is poor, generation will be decomposed by being exposed to the sun in 100 DEG C of temperature or long-time
Hydrogen chloride, and further autocatalysis is decomposed, and is caused to change colour, is influenced beauty；And it with the decomposition of polyvinyl chloride, can reduce poly-
The decline of vinyl chloride mechanical property reduces its service life, therefore how to improve the weatherability of foam polyvinyl chloride plastics
Can, it is a problem to be solved.
Summary of the invention
One of the objects of the present invention is to provide a kind of weather-proof foamed plastics of plastic-aluminum co-extrusion section bar, pass through antioxygen
Agent, ultraviolet absorbing agent and stabilizer can significantly improve the weatherability and light aging property of PVC material, toughening
The mechanical strength and flexibility of foamed plastic can be improved in the addition of masterbatch, makes foamed plastic under long-term solar radiation,
It is still able to maintain good intensity, extends the service life of foamed plastic.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar, based on parts by weight, including following component:
50-60 parts of polyvinyl chloride resin, 15-20 parts of calcium carbonate, 0.1-0.2 parts of antioxidant, 0.12-0.18 parts of ultraviolet absorbing agent, toughening
4-6 parts of masterbatch, 2-3 parts of stabilizer, 0.5-1 parts of lubricant, 0.5-0.7 parts of foaming agent, 1.2-1.8 parts of plasticizer, titanium dioxide 4-6
Part and 0.2-0.25 parts of colorant.
By using above-mentioned technical proposal, the addition of antioxidant, ultraviolet absorbing agent and stabilizer can be mentioned effectively
The mechanical strength of foamed plastic can be improved in the weatherability and light aging property of high PVC material, the addition of toughened master batch
And flexibility, make foamed plastic under long-term solar radiation, be still able to maintain good intensity, extends making for foamed plastic
Use the service life.
Further, irgasfos 168 and antioxidant 1010 that the antioxidant packages are 3:1 containing weight ratio.
By using above-mentioned technical proposal, irgasfos 168 is that a kind of phosphite antioxidant haveing excellent performance can be significant
Improve the photostability of product；Antioxidant 1010 is phenolic antioxidant, and irgasfos 168 and antioxidant 1010 are used in combination, can
Synergistic effect is given full play to, has the function of that thermostabilization is high, lasting effect is long, nontoxic and pollution-free, foamed plastic can be prevented in length
Thermal oxidative degradation in phase ageing process keeps foamed plastic not easy to change under conditions of high temperature process and under chronic sun exposure.
Further, the ultraviolet absorbing agent includes the UV-327 and UV-770 that weight ratio is 1:1.
By using above-mentioned technical proposal, UV-327 is also known as 2- (2 '-hydroxyls -3 ', 5 '-di-tert-butyl-phenyls) -5- chlorobenzene
And triazole, have the characteristics that toxicity is low, absorb that UV resistance is strong, can strong absorbing wavelength be 270-380nm ultraviolet light；
UV-770 is light stabilizer, and chemical property is stablized, mainly as efficient hindered amine light stabilizer；UV-327 and UV-770 is multiple
It acts synergistically well with having, it is good with the compatibility of polyvinyl chloride, the ultraviolet light in daylight can be absorbed, extend foamed plastic
Daylight aging, extend the service life of foamed plastic.
Further, the toughened master batch is prepared with the following method: based on parts by weight, taking 30-40 parts of chlorinated polyethylenes
Alkene, 10-20 part ethylene-octene copolymer, 10-20 parts of ethylene-ethyl acrylate copolymers, by it at 120-130 DEG C after stirring
At a temperature of heat 5-10min, obtain mixture；Then into mixture be added 2-3 parts of hexaetcycletrisiloxanes and
0.5-1 parts of antioxidant 1010s are warming up to 150-160 DEG C, after heating 5-10min, obtain toughened master batch by squeezing out, being granulated.
By using above-mentioned technical proposal, haloflex has excellent weatherability, resistance to ozone, chemical-resistant resistance and resistance to
Ageing properties, using haloflex as raw material, by itself and ethylene-octene copolymer, ethylene-ethyl acrylate copolymer, six second
The plasticizing mother particle obtained after basic ring trisiloxanes and antioxidant blending extrusion, not only can be improved foamed plastic weatherability,
Resistance to ozone and ageing-resistant performance, moreover it is possible to improve flexibility, thermal stability and the processing performance of foamed plastic.
Further, the stabilizer is calcium zinc stabilizer.
By using above-mentioned technical proposal, calcium zinc stabilizer is a kind of good non-toxic stabilizer, is had hot steady well
Qualitative, photostability, the transparency and tinting strength, tinting power have good dispersibility, compatibility and are added in polyvinyl chloride resin process
Work mobility.
Further, the lubricant includes the stearic acid and oxidized polyethylene wax that weight ratio is 1.5:1.
By using above-mentioned technical proposal, stearic acid has good lubricity and preferable light, heat stabilization；Oxidation
Polyethylene wax has the performance that thermal stability is good, nontoxic, viscosity is low, softening point is high, hardness is good, to the dispersibility of filler, pigment
It is splendid, existing extremely excellent external lubricity, and there is stronger internal lubrication to act on, also there is coupled action；Stearic acid and oxidation
The production efficiency of plastic processing can be improved in polyethylene wax and used time, improves the compatibility between raw material.
Further, the foaming agent is azodicarbonamide foaming agent.
By using above-mentioned technical proposal, azodicarbonamide foaming agent is that gas forming amount is maximum, and best performance is got over, purposes is wide
General foaming agent has the advantages that performance is stable, nonflammable, pollution-free, non-toxic and tasteless and incorrosive to mold.
Further, the plasticizer includes the dioctyl phthalate and paraffin oil that weight ratio is 5:1.
By using above-mentioned technical proposal, dioctyl phthalate is the common plasticizer of Corvic, can be with
The flowing temperature and melt viscosity when polyvinyl chloride processing are reduced, processing performance is improved, and paraffin oily pollution is small, is suitable for light color system
Product；Dioctyl phthalate and paraffin oil and with the cold resistance, flexibility and shock resistance that can improve foamed plastics.
Further, the colorant includes the titanium viridescent and ultramarine that weight ratio is 4:1.
It is titanium is dark green and ultramarine proportionally mixes by using above-mentioned technical proposal, it, can be with after titanium dioxide cooperation
The pigment of Bluish white is made, PVC foam plastics and aluminium co-extrusion are obtained into the plastic-aluminum co-extrusion section bar of Bluish white, to use plastic-aluminum
The door and window more atmosphere of co-extrusion section bar processing is beautiful.
The second object of the present invention is to provide a kind of preparation method of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of plastic-aluminum co-extrusion section bar preparation method of weather-proof foamed plastic, includes the following steps:
S1: mixing: 50-60 parts of polyvinyl chloride resin, 15-20 parts of calcium carbonate, 0.1-0.2 parts of antioxidant, ultraviolet absorbing agent 0.12-
0.18 part, 4-6 parts of toughened master batch, 2-3 parts of stabilizer, 0.5-1 parts of lubricant, 0.5-0.7 parts of foaming agent, plasticizer 1.2-1.8
Part, 4-6 part of titanium dioxide and 0.2-0.25 parts of colorant mix, temperature is 100-110 DEG C, revolving speed is 400-500r/min's
Under the conditions of, 10-20min is stirred, temperature is cooled to 40-50 DEG C of discharge and obtains blend composition；
S2: curing: at a temperature of blend composition is placed in 40-50 DEG C, 12h is cured；
S3: be granulated: by the blend composition after curing 180-220 DEG C at a temperature of, heat 15-25min, obtain pellet；
S4: extrusion molding: by pellet put into double screw extruder in, 140-190 DEG C at a temperature of heat 20-30min, melt
After extrusion, cooling and shaping.
By using above-mentioned technical proposal, polyvinyl chloride resin and auxiliary agent are by mixing, curing, granulation and can be with after squeezing out
Plastic-aluminum co-extrusion section bar is obtained with aluminium co-extrusion, there is heat preservation, sound insulation and weather resistance well.
In conclusion the present invention has the advantages that compared with the prior art
1. by antioxidant, ultraviolet absorbing agent and stabilizer, can significantly improve PVC material weatherability and resistance to daylight
Ageing properties, the addition of toughened master batch can be improved the mechanical strength and flexibility of foamed plastic, make foamed plastic long-term
Solar radiation under, be still able to maintain good intensity, extend the service life of foamed plastic；
2. irgasfos 168 is the photostability that a kind of phosphite antioxidant haveing excellent performance can significantly improve product；Antioxygen
Agent 1010 is phenolic antioxidant, and irgasfos 168 and antioxidant 1010 are used in combination, synergistic effect can be given full play to, and has heat
Stablize high, lasting effect length, nontoxic and pollution-free effect, thermal oxide drop of foamed plastic during long-term ageing can be prevented
Solution, keeps foamed plastic not easy to change under conditions of high temperature process and under chronic sun exposure；
3.UV-327 is also known as 2- (2 '-hydroxyls -3 ', 5 '-di-tert-butyl-phenyls) -5- chlorobenzotriazole, absorption purple low with toxicity
The strong feature of outside line ability, can strong absorbing wavelength be 270-380nm ultraviolet light；UV-770 is light stabilizer, chemically
Matter is stablized, mainly as efficient hindered amine light stabilizer；UV-327 and UV-770 compounding has synergistic effect well, with
The compatibility of polyvinyl chloride is good, and the ultraviolet light in daylight can be absorbed, and extends the daylight aging of foamed plastic, extends foamed plastic
Service life；
4. haloflex has excellent weatherability, resistance to ozone, chemical-resistant resistance and ageing-resistant performance, it is with haloflex
It is total to by raw material with ethylene-octene copolymer, ethylene-ethyl acrylate copolymer, hexaetcycletrisiloxane and antioxidant
The plasticizing mother particle obtained after mixed extrusion, not only can be improved weatherability, resistance to ozone and the ageing-resistant performance of foamed plastic, moreover it is possible to
Improve flexibility, thermal stability and the processing performance of foamed plastic；
5. dioctyl phthalate is the common plasticizer of Corvic, flowing when polyvinyl chloride processing can be reduced
Temperature and melt viscosity improve processing performance, and paraffin oily pollution is small, is suitable for light color article；Dioctyl phthalate and stone
Wax oil and with the cold resistance, flexibility and shock resistance that can improve foamed plastics.
Specific embodiment
Invention is further described in detail below.
One, 30kg haloflex, 10kg ethylene-octene copolymer, 10kg the preparation example preparation example 1 of toughened master batch: are taken
Ethylene-ethyl acrylate copolymer, after stirring by its 120 DEG C at a temperature of heat 5min, obtain mixture；Then to mixing
2kg hexaetcycletrisiloxane and 0.5kg antioxidant 1010 are added in material, is warming up to 150 DEG C, after heating 5min, by squeezing
Out, it is granulated and obtains toughened master batch.
Preparation example 2: 35kg haloflex, 15kg ethylene-octene copolymer, the copolymerization of 15kg ethylene-ethylacrylate are taken
Object, after stirring by its 125 DEG C at a temperature of heat 8min, obtain mixture；Then 2.5kg Hexaethyl is added into mixture
Cyclotrisiloxane and 0.75kg antioxidant 1010 are warming up to 155 DEG C, after heating 8min, obtain toughening mother by squeezing out, being granulated
Material.
Preparation example 3: 40kg haloflex, 20kg ethylene-octene copolymer, the copolymerization of 20kg ethylene-ethylacrylate are taken
Object, after stirring by its 130 DEG C at a temperature of heat 10min, obtain mixture；Then 3kg Hexaethyl is added into mixture
Cyclotrisiloxane and 1kg antioxidant 1010 are warming up to 160 DEG C, after heating 10min, obtain toughening mother by squeezing out, being granulated
Material.
Two, the polyvinyl chloride resin in embodiment following embodiment is SG-5 type resin；Irgasfos 168 Linyi three is rich
The antioxidant SONOX168 of Chemical Co., Ltd.'s production；Antioxidant 1010 is raw selected from Shandong Province Linyi City Sanfeng Chemical Industry Co., Ltd.
The antioxidant SONOX1010 of production；UV-327 is selected from the UV-327 of Hubei south arrow production；UV-770 is selected from the production of Hubei south arrow
UV-770；Foaming agent is selected from the AC modified foaming agent of the model HBA-401A of Baotou tool and the production of new material Co., Ltd；
Calcium zinc stabilizer be selected from the bright woods in Guangdong take in the fresh material Science and Technology Co., Ltd. production model WWP-G03B production calcium zinc
Stabilizer.
Embodiment 1: a kind of plastic-aluminum co-extrusion section bar is prepared with the following method with weather-proof foamed plastic:
S1: mixing: polyvinyl chloride resin 50kg, calcium carbonate 15kg, irgasfos 168 0.075kg, antioxidant 1010 0.025kg, UV-
3270.06kg, UV-770 0.06kg, toughened master batch 4kg, calcium zinc stabilizer 2kg, stearic acid 0.3kg, oxidized polyethylene wax
0.2kg, azodicarbonamide foaming agent 0.5kg, dioctyl phthalate 1kg, paraffin oil 0.2kg, titanium dioxide 4kg, titanium are green
Green 0.16kg and ultramarine 0.04kg mixing stirs 10min under conditions of temperature is 100 DEG C, revolving speed is 400r/min, will
Temperature is cooled to 40 DEG C of discharges and obtains blend composition；Wherein toughened master batch is selected from toughened master batch prepared by the preparation example 1 of toughened master batch；
S2: curing: at a temperature of blend composition is placed in 40 DEG C, 12h is cured；
S3: be granulated: by the blend composition after curing 180 DEG C at a temperature of, heat 15min, obtain pellet；
S4: extrusion molding: pellet is put into double screw extruder, wherein 140 DEG C of area's temperature of double screw extruder, 2nd area
150 DEG C of temperature, three area's temperature are 160 DEG C, four area's temperature are 175 DEG C, and merging core temperature is 150 DEG C, and mold temperature is 175 DEG C,
Engine speed is 15r/min, heats 20min at this temperature, after melting extrusion, cooling and shaping.
Embodiment 2: a kind of plastic-aluminum co-extrusion section bar is prepared with the following method with weather-proof foamed plastic:
S1: mixing: polyvinyl chloride resin 55kg, calcium carbonate 17.5kg, irgasfos 168 0.1125kg, antioxidant 1010 0.0375kg,
UV-327 0.075kg, UV-770 0.075kg, toughened master batch 5kg, calcium zinc stabilizer 2.5kg, stearic acid 0.45kg, oxidation are poly-
Ethylene waxes 0.3kg, azodicarbonamide foaming agent 0.6kg, dioctyl phthalate 1.25kg, paraffin oil 0.25kg, titanium white
Powder 5kg, titanium viridescent 0.18kg and ultramarine 0.045kg mixing, under conditions of temperature is 105 DEG C, revolving speed is 450r/min, are stirred
15min is mixed, temperature is cooled to 45 DEG C of discharges and obtains blend composition；It is prepared by the preparation example 2 that wherein toughened master batch is selected from toughened master batch
Toughened master batch；
S2: curing: at a temperature of blend composition is placed in 45 DEG C, 12h is cured；
S3: be granulated: by the blend composition after curing 200 DEG C at a temperature of, heat 20min, obtain pellet；
S4: extrusion molding: pellet is put into double screw extruder, wherein 145 DEG C of area's temperature of double screw extruder, 2nd area
160 DEG C of temperature, three area's temperature are 170 DEG C, four area's temperature are 180 DEG C, and merging core temperature is 155 DEG C, and mold temperature is 180 hosts
Revolving speed is 20min, heats 25in at this temperature, after melting extrusion, cooling and shaping.
Embodiment 3: a kind of plastic-aluminum co-extrusion section bar is prepared with the following method with weather-proof foamed plastic:
S1: mixing: polyvinyl chloride resin 60kg, calcium carbonate 20kg, irgasfos 168 0.15kg, antioxidant 1010 0.05kg, UV-327
0.08kg, UV-770 0.08kg, toughened master batch 6kg, calcium zinc stabilizer 3kg, stearic acid 0.6kg, oxidized polyethylene wax 0.4kg,
Azodicarbonamide foaming agent 0.7kg, dioctyl phthalate 1.5kg, paraffin oil 0.3kg, titanium dioxide 6kg, titanium are dark green
0.2kg and ultramarine 0.05kg mixing stirs 20min, by temperature under conditions of temperature is 110 DEG C, revolving speed is 500r/min
It is cooled to 40-50 DEG C of discharge and obtains blend composition；Wherein toughened master batch is selected from toughened master batch prepared by the preparation example 3 of toughened master batch；
S2: curing: at a temperature of blend composition is placed in 50 DEG C, 12h is cured；
S3: be granulated: by the blend composition after curing 220 DEG C at a temperature of, heat 25min, obtain pellet；
S4: extrusion molding: pellet is put into double screw extruder, wherein 150 DEG C of area's temperature of double screw extruder, 2nd area
170 DEG C of temperature, three area's temperature are 180 DEG C, four area's temperature are 185 DEG C, and merging core temperature is 160 DEG C, and mold temperature is 185 DEG C,
Engine speed is 25r/min, heats 30min at this temperature, after melting extrusion, cooling and shaping.
Table 1
Three, comparative example
Comparative example 1: this comparative example difference from example 1 is that, UV-770 is not added in raw material.
Comparative example 2: this comparative example difference from example 1 is that, antioxidant 1010 is not added in raw material.
Comparative example 3: this comparative example difference from example 1 is that, toughened master batch is not added in raw material.
Comparative example 4: this comparative example difference from example 1 is that, the chlorination of the toughened master batch equivalent in raw material
Polyethylene replaces.
Comparative example 5: this comparative example difference from example 1 is that, the toughened master batch 2kg chlorinated polyethylene in raw material
Alkene and 1kg ethylene-octene copolymer replace.
Comparative example 6: this comparative example difference from example 1 is that, the toughened master batch 2kg chlorinated polyethylene in raw material
Alkene, 1kg ethylene-octene copolymer and 1kg ethylene-propylene methacrylate copolymers replace.
Four, performance test is according to JC/T437-2014 " use in construction of door and window plastic-aluminum co-extrusion section bar ", to rigid foamed property
Can requirement, the foamed plastic prepared to embodiment 1-3 and comparative example 1-6 is as sample, according to following standard, to its performance
It is tested, test result is shown in table 2.
1. apparent density: according to GB/T 6343 " measurements of foamed plastics and rubber apparent density ", measuring foamed plastic
Apparent density.
2. shore hardness: the measurement of D type Shore durometer being vertically placed on the visible surface of foamed plastic, makes indentor point from examination
Sample edge is no less than 10mm, along 5 points of width direction Uniform testing of foamed plastic, instantaneous reading.Measure two of foamed plastic
Visible surface, each visible surface take 5 points of arithmetic mean of instantaneous value, and taking smaller value in two visible surfaces is the Shore durometer number of sample.
3. vicat softening temperature: in GB/T 1633-2000 " measurement of thermoplastic vicat softening temperature (VST) "
A50The vicat softening temperature of method measurement foamed plastic.
4. tensile strength: " the measurement part 2 of plastic tensile intensity: the test of molding and extrusion molding plastics of GB/T 1040.2
Condition ", specimen width is 1B type, measures the tensile strength of foamed plastic.
5. misalignment before and after aging: according to GB/T16422.2-1999 " plastics laboratory light source exposure test method the 2nd
Part: xenon arc lamp " in A method regulation carry out, blackboard temperature be (65 ± 3) DEG C, relative humidity be (50 ± 5) %, ageing time
For 6000h.Use CIE standard light source D65, the spectrophotometer of determination condition 8/d；Taking a sample is original sample, separately
The visible surface of an outer sample carries out aging, and aging sample is made even in interior measurement, 2 points of each sample measurement for 24 hours firmly after taking out
Mean value is measured according to GB/T 11186.2, GB/T 11186.3, calculates misalignment △ E*。
6. bending strength: according to GB/T 8812.2-2007 " the measurement part 2 of rigid foam bending property: curved
The measurement of Qu Qiangdu and apparent bending elastic modulus ".
Table 2
The apparent density of foamed plastic prepared by the present invention, shore hardness, Vicat softening point, stretching it can be seen from 2 data of table
Misalignment meets the requirement of JC/T437-2014 " use in construction of door and window plastic-aluminum co-extrusion section bar " before and after intensity and aging, and
Aging misalignment grade of the invention is 1, far smaller than the standard in requirement, illustrates that foamed plastic prepared by the present invention has
Good weatherability.
UV-770 is not added in the raw material of comparative example 1, the misalignment before and after foamed plastic aging is 3, compared to implementation
Example 1, the misalignment before and after aging obviously become larger, and illustrate that the weatherability of foamed plastic can be improved in UV-770.
It is not added with antioxidant 1010 in the raw material of comparative example 2, compared to embodiment 1, the vicat softening temperature of foamed plastic,
Tensile strength and bending strength decrease, and misalignment significantly increases before and after aging, illustrate that antioxidant 1010 not only can be with
The weatherability for improving foamed plastic, also contributes to the thermal stability and mechanical property of foamed plastic.
It is not added with toughened master batch in the raw material of comparative example 3, compared to embodiment 1, the vicat softening temperature of foamed plastic drops
It is low, illustrate that the thermal stability of foamed plastic can be improved in toughened master batch；The reduction of tensile strength and bending strength, illustrates toughening
Masterbatch can be obviously improved the tensile strength and bending strength of foamed plastic；Misalignment becomes larger before and after aging, illustrates toughening
Masterbatch also contributes to improving the weatherability of foamed plastic.
The haloflex of toughened master batch equivalent in the raw material of comparative example 4 replaces, compared to embodiment 1, foaming modeling
The reduction of the vicat softening temperature, tensile strength and bending strength of material, the increase of misalignment, illustrates the present invention before and after aging
Toughened master batch single haloflex is better than to the improvement effect of foamed plastic performance；Compared to comparative example 3, foamed plastic
Vicat softening temperature, tensile strength and bending strength have growth more by a small margin, illustrate that haloflex can improve hair
Vicat softening temperature, tensile strength and the bending strength of foamed material.
Toughened master batch in the raw material of comparative example 5 is replaced with 2kg haloflex and 1kg ethylene-octene copolymer, phase
Compared with embodiment 1, the reduction of the vicat softening temperature, tensile strength and bending strength of foamed plastic, color is inclined before and after aging
The increase of difference illustrates haloflex and ethylene-that toughened master batch of the invention is better than the improvement effect of foamed plastic performance
The compounding effect of octene copolymer；Compared to comparative example 3, vicat softening temperature, tensile strength and the bending of foamed plastic are by force
Degree has growth more by a small margin, illustrates the dimension that can improve foamed plastic when haloflex is compounded with ethylene-octene copolymer
Card softening temperature, tensile strength and bending strength.
Toughened master batch 2kg haloflex, 1kg ethylene-octene copolymer and 1kg second in the raw material of comparative example 6
Alkene-ethylpropylene copolymer replaces, and compared to embodiment 1, vicat softening temperature, tensile strength and the bending of foamed plastic are by force
The reduction of degree, the increase of misalignment, illustrates toughened master batch of the invention to the improvement effect of foamed plastic performance before and after aging
The compounding effect of the haloflex, ethylene-octene copolymer and the ethylene-ethyl acrylate copolymer that are better than；Compared to right
Ratio 3, vicat softening temperature, tensile strength and the bending strength of foamed plastic have growth more by a small margin, illustrate that chlorination is poly-
Ethylene, ethylene-octene copolymer and ethylene-ethyl acrylate copolymer can improve the dimension card softening of foamed plastic when compounding
Temperature, tensile strength and bending strength.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar, it is characterised in that: based on parts by weight, including following component:
50-60 parts of polyvinyl chloride resin, 15-20 parts of calcium carbonate, 0.1-0.2 parts of antioxidant, 0.12-0.18 parts of ultraviolet absorbing agent, toughening
4-6 parts of masterbatch, 2-3 parts of stabilizer, 0.5-1 parts of lubricant, 0.5-0.7 parts of foaming agent, 1.2-1.8 parts of plasticizer, titanium dioxide 4-6
Part and 0.2-0.25 parts of colorant.
2. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the antioxygen
Agent includes the irgasfos 168 and antioxidant 1010 that weight ratio is 3:1.
3. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: described ultraviolet
Light absorbers include the UV-327 and UV-770 that weight ratio is 1:1.
4. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the toughening
Masterbatch is prepared with the following method: based on parts by weight, take 30-40 parts of haloflexes, 10-20 parts of ethylene-octene copolymers,
10-20 parts of ethylene-ethyl acrylate copolymers, after stirring by its 120-130 DEG C at a temperature of heat 5-10min, mixed
Close material；Then 2-3 parts of hexaetcycletrisiloxanes and 0.5-1 parts of antioxidant 1010s are added into mixture, are warming up to 150-
160 DEG C, after heating 5-10min, toughened master batch is obtained by squeezing out, being granulated.
5. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the stabilization
Agent is calcium zinc stabilizer.
6. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the lubrication
Agent includes the stearic acid and oxidized polyethylene wax that weight ratio is 1.5:1.
7. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the foaming
Agent is azodicarbonamide foaming agent.
8. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the plasticising
Agent includes the dioctyl phthalate and paraffin oil that weight ratio is 5:1.
9. a kind of weather-proof foamed plastic of plastic-aluminum co-extrusion section bar according to claim 1, it is characterised in that: the coloring
Agent includes the titanium viridescent and ultramarine that weight ratio is 4:1.
10. a kind of plastic-aluminum co-extrusion section bar preparation method of weather-proof foamed plastic, characterized by the following steps:
S1: mixing: 50-60 parts of polyvinyl chloride resin, 15-20 parts of calcium carbonate, 0.1-0.2 parts of antioxidant, ultraviolet absorbing agent 0.12-
0.18 part, 4-6 parts of toughened master batch, 2-3 parts of stabilizer, 0.5-1 parts of lubricant, 0.5-0.7 parts of foaming agent, plasticizer 1.2-1.8
Part, 4-6 part of titanium dioxide and 0.2-0.25 parts of colorant mix, temperature is 100-110 DEG C, revolving speed is 400-500r/min's
Under the conditions of, 10-20min is stirred, temperature is cooled to 40-50 DEG C of discharge and obtains blend composition；
S2: curing: at a temperature of blend composition is placed in 40-50 DEG C, 12h is cured；
S3: be granulated: by the blend composition after curing 180-220 DEG C at a temperature of, heat 15-25min, obtain pellet；
S4: extrusion molding: by pellet put into double screw extruder in, 140-190 DEG C at a temperature of heat 20-30min, melt
After extrusion, cooling and shaping.
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| CN114163747A (en) * | 2020-09-11 | 2022-03-11 | 新疆天业（集团）有限公司 | Special granular material combination formula for high-ultraviolet-resistance polyvinyl chloride and preparation method thereof |
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Application publication date: 20190528 |