CN101635385B - PVC profile outer cover used in base station antenna and preparation method thereof - Google Patents
PVC profile outer cover used in base station antenna and preparation method thereof Download PDFInfo
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- CN101635385B CN101635385B CN200910034101XA CN200910034101A CN101635385B CN 101635385 B CN101635385 B CN 101635385B CN 200910034101X A CN200910034101X A CN 200910034101XA CN 200910034101 A CN200910034101 A CN 200910034101A CN 101635385 B CN101635385 B CN 101635385B
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Abstract
The invention discloses a PVC profile outer cover used in a base station antenna and a preparation method thereof, which can not only improve the mechanical property, but also greatly improve high and low temperature resistant ageing property and ultraviolet ray resistant property, and greatly improve the electrical property of the material simultaneously. The PVC profile outer cover used in the base station antenna in the invention is manufactured by the following raw materials according to the mass ratio: 100 parts of PVC, 4-10 parts of inorganic modified padding, 0-10 parts of calcium carbonate, 1-2 parts of organic stannum stabilizing agent; 1-2 parts of metal soap stabilizing agent, 0.5-1.5 parts of lubricating agent, 4-12 parts of impact modifier, 1-3 parts of acrylic ester processing agent and 0-0.6 part of light stabilizer.
Description
Technical field
The present invention relates to a kind of profile outer cover and preparation method thereof, more specifically to a kind of PVC profile outer cover used in base station antenna and preparation method thereof.
Background technology
Along with the develop rapidly of mobile communication industry, communication has also obtained very big opportunity to develop with the antenna for base station industry, and each communication base station and antenna all must use a large amount of plastic products, and wherein antenna case series products is typical representative.For example only U.S. Andrew Corporation and French RFS estimate that annual demand to antenna case series products has just reached more than 1,000,000.Because the microwave communication antenna places outdoor for a long time; Not only require outer cover to have lower dielectric constant and dielectric loss to satisfy the reliable transmission of communication signal; Also must possess excellent high-low temperature resistant ageing properties and ultra-violet radiation resisting function to satisfy long-term use out of doors, this has just proposed very special performances requirement to the material that the antenna case uses.
General manufacturing enterprise all uses ABS, ASA or glass-reinforced plastic material to make antenna case series products; Wherein macromolecular material such as ABS, ASA is because of its intrinsic rerum natura; Make that processing characteristics is not good when making extruded profile class case product, the high production capacity of cost is low, extrudes that to add the man-hour quality stability poor; And that glass-reinforced plastic material is made this series products timeliness rate is low, and cost of material is high, and can't reuse because of it environment is brought pollution, and the defective products of producing is in the awkward condition that can't handle.
The extensive use that polyvinyl chloride (PVC) material is with low cost because of it, be easy to process, material source extensively obtains all trades and professions; Use extensive especially in the extrusion molding processing industry; Particularly in recent years along with the development of PVC modification technology; Expanded the use field of this kind material greatly; But the service condition that PVC dielectric material performance commonly used and UV resistant performance still can't satisfy antenna for base station, general modified PVC also only can improve its mechanical strength and processing characteristics, therefore is badly in need of a kind of PVC material of optimizing improvement of development; When making it satisfy various mechanical serviceability, can satisfy low-k, low-dielectric loss, uvioresistant simultaneously and meet environmental protection, requirement with low cost.
Summary of the invention
The invention solves the deficiency and the problem that exist in the above-mentioned prior art; A kind of PVC profile outer cover used in base station antenna is provided; This PVC profile outer cover has not only improved its mechanical performance; And increased substantially high-low temperature resistant ageing properties and UV resistant performance, also improved the electrical property of this material simultaneously greatly.
The present invention also provides the preparation method of this PVC profile outer cover used in base station antenna.
The present invention realizes through following technical scheme:
PVC profile outer cover used in base station antenna of the present invention is to be processed by following quality proportion raw material:
100 parts of PVC
4～10 parts of inorganic modified fillers
0～10 part in calcium carbonate
1～2 part of organic tin stabilizer
1～2 part of metallic soap class stabilizer
0.5～1.5 part of lubricant
4～12 parts of impact modifiers
1～3 part of processing aids acrylic resin
0～0.6 part of light stabilizer.
PVC profile outer cover used in base station antenna of the present invention, its further technical scheme are that described inorganic filler is a kind of in titanium dioxide and the mica or both mixtures, and wherein said titanium dioxide is preferably rutile titanium dioxide.
PVC profile outer cover used in base station antenna of the present invention; Its further technical scheme can also be that described organic tin stabilizer is non-thiol organotin stabilizer or thiol organotin stabilizer, and wherein said non-thiol organotin stabilizer is preferably a kind of or its compound in dibutyl tin laurate, Bis(lauroyloxy)dioctyltin, maleic acid dioctyltin, the maleic acid dibutyl tin; Described thiol organotin stabilizer is preferably a kind of or its compound in isooctyl thioglycolate stannous methide, isooctyl thioglycolate di-n-butyl tin, the isooctyl thioglycolate dioctyltin.
PVC profile outer cover used in base station antenna of the present invention, its further technical scheme can also be that described metallic soap class stabilizer is calcium stearate, barium stearate, zinc stearate or its combination.
PVC profile outer cover used in base station antenna of the present invention, its further technical scheme can also be that described lubricant is a kind of or its combination in Tissuemat E, paraffin, stearic acid, the OPE.
PVC profile outer cover used in base station antenna of the present invention, its further technical scheme can also be that described impact modifier is a kind of or its combination in haloflex, the acrylic ester impact-resisting modifier.
PVC profile outer cover used in base station antenna of the present invention; Its further technical scheme can also be that described light stabilizer is UV absorbers or hindered amine light stabilizer; Wherein said UV absorbers is benzophenone UV absorbers or benzotriazole UV absorbers; The preferred UV-531 of benzophenone UV absorbers, the preferred UV-326 of benzotriazole UV absorbers.
The preparation method of PVC profile outer cover used in base station antenna of the present invention may further comprise the steps:
Powder high-speed mixing: drop into polyvinyl chloride resin, metallic soap class stabilizer, organic tin stabilizer at high-speed mixer, when temperature is raised to 80～85 ℃, drop into impact modifier, processing aid and other auxiliary agent, when temperature is raised to 90～95 ℃, drop into inorganic modified filler; When treating that temperature continues to be raised to 115～120 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, when temperature drops to 40 ± 5 ℃ to get final product discharge to feed bin;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, wherein double screw extruder moulding controlled condition:
150 ± 10 ℃ of 1 district's temperature, 165 ± 10 ℃ of 2 district's temperature, 170 ± 10 ℃ of 3 district's temperature, 180 ± 10 ℃ of 4 district's temperature; 170 ± 10 ℃ of transition temperature, 170 ± 10 ℃ of die head temperatures, 100 ± 10 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1～1.5m/min.
The present invention compared with prior art has following beneficial effect:
PVC profile outer cover used in base station antenna of the present invention mainly is to be main with PVC; Add the environment-friendly type organic tin stabilizer; Add esters of acrylic acid (or haloflex class) anti-impact modifier simultaneously and improve impact toughness, add the processing fluidity that processing aids acrylic resin improves the PVC profile shapes.Mainly utilize collaborative performance UV Absorption and the shielding action of rutile titanium dioxide as ultravioletlight screening agent, UV absorbers, hindered amine light stabilizer, laminated structure and the rutile titanium dioxide etc. of stressing to utilize mica simultaneously are the further coordinative role ultraviolet resistance effect that improves the PVC profile shapes again.
PVC profile outer cover used in base station antenna of the present invention does not use lead salt stabilizer, nontoxic, environmental protection, and ultraviolet-resistant performance is good, and is corrosion-resistant, can use out of doors for a long time; Hot strength is high, and bending strength is high, and impact toughness is good; Dimensional stability is good, can reclaim, and recycles the plastic products of making other; Heat distortion temperature can reach in addition: 72 ℃ (P=1.80MPa) is above with more than 77 ℃ (P=0.45MPa), can be for a long time-40 ℃～+ 70 ℃ uses, and dielectric constant is low, and dielectric loss is little.
Preparation method of the present invention is simple, the PVC powder mixture, and through an extrusion molding of double screw extruder, preparation cost is low.
Embodiment
Below the present invention is described, but the present invention not merely is defined in these embodiment through specific embodiment.
Embodiment 1:
Composition of raw materials: PVC100 part, 10 parts of rutile titanium dioxides, 5 parts in calcium carbonate, 1.5 parts of organic tin stabilizer dibutyl tin laurates, 1.0 parts of calcium stearates, 0.6 part in paraffin; 0.3 part of stearic acid, 6 parts of haloflexes, 2 parts of processing aids acrylic resins.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 80 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 92 ℃, drop into inorganic modified filler rutile titanium dioxide and calcium carbonate; When treating that temperature continues to be raised to 115 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2; Double screw extruder moulding controlled condition wherein: 150 ℃ of 1 district's temperature, 165 ℃ of 2 district's temperature, 170 ℃ of 3 district's temperature, 180 ℃ of 4 district's temperature; 170 ℃ of transition temperature, 170 ℃ of die head temperatures, 100 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.2m/min.
Embodiment 2
Composition of raw materials: PVC100 part, 5 parts of rutile titanium dioxides, 5 parts on mica, 1.5 parts of organic tin stabilizer dibutyl tin laurates, 1.3 parts of calcium stearates, 0.2 part of zinc stearate, 1.0 parts of Tissuemat Es, 6 parts of acrylic ester impact-resisting modifiers, 2 parts of processing aids acrylic resins.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, zinc stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 85 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent; When temperature is raised to 95 ℃, drop into inorganic modified filler rutile titanium dioxide and mica; When treating that temperature continues to be raised to 120 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 45 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 145 ℃ of 1 district's temperature; 160 ℃ of 2 district's temperature, 165 ℃ of 3 district's temperature, 175 ℃ of 4 district's temperature; 165 ℃ of transition temperature, 165 ℃ of die head temperatures, 95 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1m/min.
Embodiment 3
Composition of raw materials: PVC100 part, 5 parts of rutile titanium dioxides, 5 parts in calcium carbonate, 1 part of organic tin stabilizer Bis(lauroyloxy)dioctyltin, 1.5 parts of calcium stearates, 0.5 part of Tissuemat E, 0.3 part in paraffin, 0.2 part of stearic acid, 6 parts of acrylic ester impact-resisting modifiers, 1.5 parts of processing aids acrylic resins, 0.3 part of benzophenone UV absorbers UV-531.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 83 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 90 ℃, drop into inorganic modified filler rutile titanium dioxide and calcium carbonate; When treating that temperature continues to be raised to 118 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 35 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 155 ℃ of 1 district's temperature; 170 ℃ of 2 district's temperature, 175 ℃ of 3 district's temperature, 185 ℃ of 4 district's temperature; 175 ℃ of transition temperature, 175 ℃ of die head temperatures, 105 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.2m/min.
Embodiment 4
Composition of raw materials: 0.2 part of PVC100 part, 4 parts of rutile titanium dioxides, 1.5 parts of organic tin stabilizer isooctyl thioglycolate dioctyltins, 1.0 parts of calcium stearates, 0.8 part of Tissuemat E, 5 parts of acrylic ester impact-resisting modifiers, 2 parts of processing aids acrylic resins, benzophenone UV absorbers UV-5310.2 part, benzotriazole UV absorbers UV-3260.2 part, hindered amine light stabilizer.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 83 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 93 ℃, drop into inorganic modified filler rutile titanium dioxide; When treating that temperature continues to be raised to 118 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 160 ℃ of 1 district's temperature; 175 ℃ of 2 district's temperature, 180 ℃ of 3 district's temperature, 190 ℃ of 4 district's temperature; 180 ℃ of transition temperature, 180 ℃ of die head temperatures, 110 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.5m/min.
Embodiment 5
Composition of raw materials: PVC100 part, 8 parts of rutile titanium dioxides, 2 parts on mica, 1.5 parts of organic tin stabilizer isooctyl thioglycolate di-n-butyl tin composites, 1.0 parts of calcium stearates, 0.8 part in paraffin, 8 parts of acrylic ester impact-resisting modifiers, 2 parts of processing aids acrylic resins.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 83 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 92 ℃, drop into inorganic modified filler rutile titanium dioxide and mica; When treating that temperature continues to be raised to 118 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 150 ℃ of 1 district's temperature; 165 ℃ of 2 district's temperature, 170 ℃ of 3 district's temperature, 180 ℃ of 4 district's temperature; 170 ℃ of transition temperature, 170 ℃ of die head temperatures, 100 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.2m/min.
Embodiment 6
Composition of raw materials: PVC100 part, 4 parts of rutile titanium dioxides, 4 parts on mica, 1.5 parts of organic tin stabilizer dibutyl tin laurates, 1.2 parts of calcium stearates, 0.5 part of Tissuemat E, 0.3 part in paraffin, 6 parts of acrylic ester impact-resisting modifiers, 3 parts of processing aids acrylic resins.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 83 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 92 ℃, drop into inorganic modified filler rutile titanium dioxide and mica; When treating that temperature continues to be raised to 118 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 150 ℃ of 1 district's temperature; 165 ℃ of 2 district's temperature, 170 ℃ of 3 district's temperature, 180 ℃ of 4 district's temperature; 170 ℃ of transition temperature, 170 ℃ of die head temperatures, 100 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.2m/min.
Embodiment 7
Composition of raw materials: PVC100 part, 6 parts of rutile titanium dioxides, 4 parts in calcium carbonate, 1.5 parts of organic tin stabilizer dibutyl tin laurates, 1.3 parts of calcium stearates, 0.8 part of Tissuemat E, 0.2 part of stearic acid, 6 parts of acrylic ester impact-resisting modifiers, 2 parts of processing aids acrylic resins, 6 parts of haloflexes.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 83 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 92 ℃, drop into inorganic modified filler rutile titanium dioxide and calcium carbonate; When treating that temperature continues to be raised to 118 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 150 ℃ of 1 district's temperature; 165 ℃ of 2 district's temperature, 170 ℃ of 3 district's temperature, 180 ℃ of 4 district's temperature; 170 ℃ of transition temperature, 170 ℃ of die head temperatures, 100 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.2m/min.
Embodiment 8
Composition of raw materials: 0.2 part of PVC100 part, 4 parts of rutile titanium dioxides, 10 parts in calcium carbonate, 1 part of organic tin stabilizer dibutyl tin laurate, 0.5 part of Bis(lauroyloxy)dioctyltin, 1.3 parts of calcium stearates, 0.8 part of OPE, 6 parts of acrylic ester impact-resisting modifiers, 2 parts of processing aids acrylic resins, 3 parts of haloflexes, benzotriazole UV absorbers UV-3260.2 part, hindered amine light stabilizer.
The preparation method:
Powder high-speed mixing: drop into polyvinyl chloride resin, calcium stearate, organic tin stabilizer at high-speed mixer; When temperature is raised to 83 ℃; Drop into acrylic ester impact-resisting modifier, processing aid and other auxiliary agent, when temperature is raised to 92 ℃, drop into inorganic modified filler rutile titanium dioxide and calcium carbonate; When treating that temperature continues to be raised to 118 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, and performance is seen table 1 and table 2, wherein double screw extruder moulding controlled condition: 150 ℃ of 1 district's temperature; 165 ℃ of 2 district's temperature, 170 ℃ of 3 district's temperature, 180 ℃ of 4 district's temperature; 170 ℃ of transition temperature, 170 ℃ of die head temperatures, 100 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1.2m/min.
Table 1: embodiment properties of product test result
| Scheme | Hot strength MPa | Percentage elongation % | Bending strength MPa | Notch impact strength kJm -2 | Heat distortion temperature (1.80MPa) ℃ | Dielectric constant (2GHz) | Dielectric loss (2GHz) |
| Embodiment 1 | 44.4 | 159 | 67.1 | 15.1 | 71.9 | 2.85 | 0.0074 |
| Embodiment 2 | 46.9 | 164 | 69.6 | 17.5 | 71.8 | 2.76 | 0.0067 |
| Embodiment 3 | 48.5 | 153 | 67.7 | 16.3 | 72.1 | 2.76 | 0.0070 |
| Embodiment 4 | 48.7 | 138 | 64.7 | 15.5 | 72.0 | 2.81 | 0.0088 |
| Embodiment 5 | 46.7 | 175 | 62.7 | 19.6 | 70.9 | 2.80 | 0.0075 |
| Embodiment 6 | 46.4 | 188 | 68.5 | 15.8 | 71.5 | 2.88 | 0.0085 |
| Embodiment 7 | 40.3 | 227 | 60.2 | 23.5 | 69.5 | 2.95 | 0.0077 |
| Embodiment 8 | 42.5 | 209 | 61.6 | 21.6 | 70.2 | 2.90 | 0.0102 |
Table 2: part embodiment product ultraviolet light and aging experimental performance data
Ultraviolet light and aging condition: ultraviolet light irradiation intensity 0.51W/m
2340nm, blackboard temperature: 65 ℃.
Claims (10)
1. PVC profile outer cover used in base station antenna is characterized in that being processed by following quality proportion raw material:
2. PVC profile outer cover used in base station antenna according to claim 1 is characterized in that described inorganic modified filler is a kind of in titanium dioxide and the mica or both mixtures.
3. PVC profile outer cover used in base station antenna according to claim 2 is characterized in that described titanium dioxide is rutile titanium dioxide.
4. PVC profile outer cover used in base station antenna according to claim 1; It is characterized in that described organic tin stabilizer is non-thiol organotin stabilizer or thiol organotin stabilizer, described non-thiol organotin stabilizer is a kind of or its compound in dibutyl tin laurate, Bis(lauroyloxy)dioctyltin, maleic acid dioctyltin, the maleic acid dibutyl tin; Described thiol organotin stabilizer is a kind of or its compound in isooctyl thioglycolate stannous methide, isooctyl thioglycolate di-n-butyl tin, the isooctyl thioglycolate dioctyltin.
5. PVC profile outer cover used in base station antenna according to claim 1 is characterized in that described metallic soap class stabilizer is calcium stearate, barium stearate, zinc stearate or its combination.
6. PVC profile outer cover used in base station antenna according to claim 1 is characterized in that described lubricant is a kind of or its combination in Tissuemat E, paraffin, stearic acid, the OPE.
7. PVC profile outer cover used in base station antenna according to claim 1 is characterized in that described impact modifier is a kind of or its combination in haloflex, the acrylic ester impact-resisting modifier.
8. PVC profile outer cover used in base station antenna according to claim 1 is characterized in that described light stabilizer is UV absorbers or hindered amine light stabilizer.
9. PVC profile outer cover used in base station antenna according to claim 8 is characterized in that described UV absorbers is benzophenone UV absorbers or benzotriazole UV absorbers.
10. like the preparation method of the arbitrary described PVC profile outer cover used in base station antenna of claim 1～9, it is characterized in that may further comprise the steps:
Powder high-speed mixing: drop into polyvinyl chloride resin, metallic soap class stabilizer, organic tin stabilizer at high-speed mixer, when temperature is raised to 80～85 ℃, drop into impact modifier, processing aid and other auxiliary agent, when temperature is raised to 90～95 ℃, drop into inorganic modified filler; When treating that temperature continues to be raised to 115～120 ℃, be discharged to rapidly in the water-cooled mixer of another jacketed, compound continues to mix in the water-cooled mixer of jacketed, gets final product discharge to feed bin when temperature drops to 40 ± 5 ℃;
Twin-screw is extruded: the material extrusion molding in the feed bin is promptly obtained PVC profile outer cover used in base station antenna, wherein double screw extruder moulding controlled condition:
150 ± 10 ℃ of 1 district's temperature, 165 ± 10 ℃ of 2 district's temperature, 170 ± 10 ℃ of 3 district's temperature, 180 ± 10 ℃ of 4 district's temperature; 170 ± 10 ℃ of transition temperature, 170 ± 10 ℃ of die head temperatures, 100 ± 10 ℃ of screw rod core temperature; Engine speed 10rpm, feeding rotating speed 10rpm, hauling speed 1～1.5m/min.
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| CN109851940B (en) * | 2018-12-14 | 2021-08-31 | 安徽理工大学 | Composite heat stabilizer containing organic tin, calcium zinc and titanium and application thereof |
| CN109867877A (en) * | 2019-01-15 | 2019-06-11 | 合肥市智德工贸有限责任公司 | A kind of anti-aging plastics material |
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