CN101177512A - Special material for polychloroethylene insulating electrical casing pipe - Google Patents
Special material for polychloroethylene insulating electrical casing pipe Download PDFInfo
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- CN101177512A CN101177512A CNA2006101292229A CN200610129222A CN101177512A CN 101177512 A CN101177512 A CN 101177512A CN A2006101292229 A CNA2006101292229 A CN A2006101292229A CN 200610129222 A CN200610129222 A CN 200610129222A CN 101177512 A CN101177512 A CN 101177512A
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Abstract
The invention discloses a special material of polyvinyl chloride for electric isolated sleeve, comprising polyvinyl chloride, stabilizing agent, modifying agent for processing, shock resistance modifying agent, plasticizer, stearic acid, calcium stearate, polyethylene (PE) wax, pigment and 6000 mesh inorganic materials powder. The preparation method is as below: combine the measured 6000 mesh inorganic materials powder and the stearic acid first and then add shock resistance modifying agent to modify the inorganic materials powder. The combined material is granulated by an extruder for reservation. Then mix the measured material evenly by the high mixing machine to form the special powder material for polyvinyl chloride insulated sleeve or granulate the special powder material for polyvinyl chloride insulated sleeve by the extruder to form the special granule for polyvinyl chloride insulated sleeve which is later molded by the plastic extruding machine to form insulated electric sleeve with various specifications. The invention has the advantages of sound dispersion and compatibility, better product quality and lower cost.
Description
Technical field
The present invention relates to plastic insulation electrical casing pipe materials, relate in particular to a kind of special material for polychloroethylene insulating electrical casing pipe that constitutes by 6000 order inorganic material powders and polyvinyl chloride (PVC) mixed with resin.
Background technology
Polyvinyl chloride (PVC), stablizer, modifier, softening agent, stearic acid, calcium stearate, polyethylene wax, pigment and inorganic material powder etc. rationally are mixed, can produce the polyvinyl chloride plastic material products of various different purposes, as the polychloroethylene insulating electrical casing pipe of hard or semi-rigid.
At present, the building material industry develop rapidly of China is carried out the standard that the poling protection has been executed industry requirements such as construction industry and power transmission as country to electric wiring.National legislation and relevant criterion are except having the requirement power line and illuminating line, and also requirement will comprise that all strong, weak electricity circuits such as grid line, telephone wire, alarm circuit all carry out the poling protection.The effect of insulating electrical casing pipe (hereinafter to be referred as the PVC insulating electrical casing pipe) is more and more important, and its range of application is more and more wider, and most producers that produce tubing are all producing the PVC insulating electrical casing pipe, and turnout is very big, and its application prospect is very extensive.
It is main raw material that the PVC insulating electrical casing pipe is meant with the polyvinyl chloride (PVC) RESINS, adds other auxiliary agents, additive and protects straight conduit through the industry below the 2000V that is used for of extrusion moulding with the electric wire of construction work.Because of advantages such as its lightweight, fire-retardant, good insulating, quick, health easy to install, pollution-free, cheap, long service life, be widely used in the poling protection of construction work hydropower installation and family room's interior decoration etc. in recent years.
In recent years, because polyvinyl chloride (PVC) resin price is high, cause polychloroethylene insulating electrical casing pipe manufacturing enterprise constantly to reduce product cost by every means, to such an extent as to the insulating electrical casing pipe produce market is very different, the regular enterprise of part adheres to yielding products of quality, ensure the quality of products but its competitive power more and more a little less than; Most of enterprise is profit-push, reduce cost and towards low-end market, manufacture in a rough and slipshod way, and the common inorganic powder of heavy addition causes quality product to descend, and has upset market.
Plastic working enterprise adopts the polyvinyl chloride resin dry blend to carry out the extrusion moulding processing of polyvinyl chloride resin pipe fitting mostly at present.But, have the reinforced difficulty of hopper in the hard PVC resin extrusion moulding complete processing, build bridge easily, processing fluidity is poor, the main frame electric current changes and waits problem greatly, causes unstable product quality.Therefore, improve the performance of polyvinyl chloride resin material, so that can be under the prerequisite that guarantees polyvinyl chloride fabricated product quality, reducing cost be the difficult problem that all processing enterprises face jointly and need to be resolved hurrily in the sector.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that currently available products exists, and a kind of special material for polychloroethylene insulating electrical casing pipe is provided, it comprises 6000 order inorganic material powders of polyvinyl chloride (PVC), stablizer, modifier, anti-impact modifier, softening agent, stearic acid, calcium stearate, polyethylene wax, pigment and larger proportion; The preparation method is the 6000 order inorganic material powders and the stearic acid blend that will measure earlier, adds anti-impact modifier then, makes inorganic material powder obtain modification, and the modified inorganic material powder material that blend goes out is standby through the forcing machine granulation; The various raw materials that will measure then are even through the high mixer thorough mixing, make the special-purpose powder of polychloroethylene insulating electrical casing pipe, the special-purpose powder of this polychloroethylene insulating electrical casing pipe can be directly through extruder for shaping, make the polychloroethylene insulating electrical casing pipe of all size, also can be with the special-purpose powder of polychloroethylene insulating electrical casing pipe through the tablets press extruding pelletization, make the special-purpose pellet of polychloroethylene insulating electrical casing pipe,, make the insulating electrical casing pipe of all size again through extruder for shaping; This special material for polychloroethylene insulating electrical casing pipe has dispersed and compatible preferably, can improve system flowability and processing characteristics, give goods better physical mechanical property, make product obtain toughened and reinforced effect, and reach the purpose that reduces product cost.
The objective of the invention is to realize by following technical scheme.
Special material for polychloroethylene insulating electrical casing pipe of the present invention comprises polyvinyl chloride (PVC), stablizer, modifier, anti-impact modifier, softening agent, stearic acid, calcium stearate, polyethylene wax, pigment; It is characterized in that, also comprise 6000 order inorganic material powders; This inorganic material powder is 6000 purpose water-ground limestones, light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture, and 90% of its particle diameter (can be expressed as D less than 2 microns
90≤ 2 μ m); Described anti-impact modifier is chlorinatedpolyethylene (CPE), polymethylmethacrylate-polyhutadiene-polystyrene copolymer (MBS), polyethylene-polyvinyl acetate multipolymer (EVA), polypropylene cyanogen-polyhutadiene-polystyrene copolymer (ABS) or their mixture; Described pigment is titanium dioxide, whitening agent or toner.
Aforesaid special material for polychloroethylene insulating electrical casing pipe, the parts by weight of wherein said polyvinyl chloride are 100; The parts by weight of described stablizer are 1.5 to 8; The parts by weight of modifier are 0.5 to 4; The parts by weight of anti-impact modifier are 1 to 15; The parts by weight of softening agent are 1 to 5; Stearic parts by weight are 0.3 to 1.5; The parts by weight of calcium stearate are 0.3 to 1.5; The parts by weight of polyethylene wax are 0.3 to 1.5; The parts by weight of titanium dioxide are 1 to 4; The parts by weight of whitening agent are 0.01 to 0.2; The parts by weight of 6000 order inorganic material powders are 5 to 80.
The preparation method of special material for polychloroethylene insulating electrical casing pipe of the present invention, it is characterized in that, 1. 6000 order inorganic material powders after will measuring are put into the high mixer high speed and are mixed, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, after temperature reaches 110 ℃ to 160 ℃, add stearic acid and mix stirring 5 to 10 minutes, add anti-impact modifier again and mix stirring 5 to 10 minutes, then the compound in the high mixer is put in the cold mixer and cooled off, be cooled to the 6000 order inorganic material powders that discharging after 30 ℃ to 50 ℃ obtains modification; 2. with 6000 order inorganic material powders after the modification through the forcing machine extruding pelletization, make 6000 order inorganic materials pellets; 3. with polyvinyl chloride (PVC), stablizer, calcium stearate, softening agent (DOP) is put into the high mixer high speed and is mixed stirring, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, in the time of dehumidifier with 6000 order inorganic materials pellets after the modification, polyethylene wax, titanium dioxide, whitening agent is put into high mixer and is continued to mix and stir, when temperature rises to 105 ℃ to 135 ℃, compound in the high mixer put in the cold mixer cool off, add modifier (ACR401) when being cooled to 70 ℃ to 80 ℃, discharging after continuing to be cooled to 30 ℃ to 50 ℃, the material of emitting are the special-purpose powder of polychloroethylene insulating electrical casing pipe.
The application of special material for polychloroethylene insulating electrical casing pipe of the present invention is characterized in that, the special-purpose powder of polychloroethylene insulating electrical casing pipe is made the special-purpose pellet of polychloroethylene insulating electrical casing pipe through the forcing machine extruding pelletization; The special-purpose pellet of this polychloroethylene insulating electrical casing pipe is made polychloroethylene insulating electrical casing pipe through extruder for shaping.
The application of special material for polychloroethylene insulating electrical casing pipe of the present invention is characterized in that, the special-purpose powder of polychloroethylene insulating electrical casing pipe directly through extruder for shaping, is made polychloroethylene insulating electrical casing pipe.
The beneficial effect of special material for polychloroethylene insulating electrical casing pipe of the present invention is, this special material for polychloroethylene insulating electrical casing pipe adds 6000 order inorganic material powders of scientific and reasonable particle diameter, and improved the preparation technology of PP Pipe Compound, in preparation process, adopt the operation of dehumidifying and modification, the inorganic material powder that makes interpolation by inorganic nature to organic sex reversal, by surface hydrophilic oleophobic performance, change into the oleophilic drainage performance, the problem of particle aggregation and bad dispersibility when successfully having solved the interpolation of 6000 order inorganic material powders, it is dispersed and compatible to make polyvinyl chloride (PVC) materials processing system improve, improvement system flowing property and processing characteristics, and can give goods better physical mechanical property, make the substrate material polyvinyl chloride performance of insulating electrical casing pipe PP Pipe Compound obtain toughened and reinforced, therefore can be in the polyvinyl chloride resin compound interpolation 6000 order inorganic material powders of larger proportion, like this, can improve competition capability not reducing effective raw materials cost that reduces under the product quality premise.
Embodiment
The present invention's employing larger proportion in matrix resin is filled 6000 order inorganic material powders, and in preparation process, adopt the operation of dehumidifying and modification, make and have better dispersiveness and compatible special-purpose powder of polychloroethylene insulating electrical casing pipe and pellet, the insulating electrical casing pipe quality of using this special-purpose powder and pellet to make is good, cost is low, and is satisfactory for result.
Special material for polychloroethylene insulating electrical casing pipe of the present invention comprises polyvinyl chloride (PVC), stablizer, modifier, anti-impact modifier, softening agent, stearic acid, calcium stearate, polyethylene wax, pigment; It is characterized in that, also comprise 6000 order inorganic material powders; This inorganic material powder is 6000 purpose water-ground limestones, light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture, and 90% of its particle diameter (can be expressed as D less than 2 microns
90≤ 2 μ m); Described anti-impact modifier is chlorinatedpolyethylene (CPE), polymethylmethacrylate-polyhutadiene-polystyrene copolymer (MBS), polyethylene-polyvinyl acetate multipolymer (EVA), polypropylene cyanogen-polyhutadiene-polystyrene copolymer (ABS) or their mixture; Described pigment is titanium dioxide, whitening agent or toner.
Special material for polychloroethylene insulating electrical casing pipe of the present invention, wherein, the parts by weight of described polyvinyl chloride are 100; The parts by weight of described stablizer are 1.5 to 8; The parts by weight of modifier are 0.5 to 4; The parts by weight of anti-impact modifier are 1 to 15; The parts by weight of softening agent are 1 to 5; Stearic parts by weight are 0.3 to 1.5; The parts by weight of calcium stearate are 0.3 to 1.5; The parts by weight of polyethylene wax are 0.3 to 1.5; The parts by weight of titanium dioxide are 1 to 4; The parts by weight of whitening agent are 0.01 to 0.2; The parts by weight of 6000 order inorganic material powders are 5 to 80.
The preparation method of special material for polychloroethylene insulating electrical casing pipe of the present invention, it is characterized in that, 1. 6000 order inorganic material powders after will measuring are put into the high mixer high speed and are mixed, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, after temperature reaches 110 ℃ to 160 ℃, add stearic acid and mix stirring 5 to 10 minutes, add anti-impact modifier again and mix stirring 5 to 10 minutes, then the compound in the high mixer is put in the cold mixer and cooled off, be cooled to the 6000 order inorganic material powders that discharging after 30 ℃ to 50 ℃ obtains modification; 2. with 6000 order inorganic material powders after the modification through the forcing machine extruding pelletization, make 6000 order inorganic materials pellets; 3. with polyvinyl chloride (PVC), stablizer, calcium stearate, softening agent (DOP) is put into the high mixer high speed and is mixed stirring, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, in the time of dehumidifier with 6000 order inorganic materials pellets after the modification, polyethylene wax, titanium dioxide, whitening agent is put into high mixer and is continued to mix and stir, when temperature rises to 105 ℃ to 135 ℃, compound in the high mixer put in the cold mixer cool off, add modifier (ACR401) when being cooled to 70 ℃ to 80 ℃, discharging after continuing to be cooled to 30 ℃ to 50 ℃, the material of emitting are the special-purpose powder of polychloroethylene insulating electrical casing pipe.
The application of special material for polychloroethylene insulating electrical casing pipe of the present invention is characterized in that, the special-purpose powder of polychloroethylene insulating electrical casing pipe is made the special-purpose pellet of polychloroethylene insulating electrical casing pipe through the forcing machine extruding pelletization; The special-purpose pellet of this polychloroethylene insulating electrical casing pipe is made polychloroethylene insulating electrical casing pipe through extruder for shaping.
The application of special material for polychloroethylene insulating electrical casing pipe of the present invention is characterized in that, the special-purpose powder of polychloroethylene insulating electrical casing pipe directly through extruder for shaping, is made polychloroethylene insulating electrical casing pipe.
From the above mentioned as can be known, use the special-purpose powder of polychloroethylene insulating electrical casing pipe provided by the invention, can adopt the method for direct extrusion moulding, make insulating electrical casing pipe, also can adopt first extruding pelletization to make the special-purpose pellet of polychloroethylene insulating electrical casing pipe, through extruder for shaping, make the method for the insulating electrical casing pipe of all size again.In addition, adopt special-purpose pellet to feed in raw material and to improve processing environment, assurance indoor air clean, minimizing dust pollution, adapt to plastic working enterprise and produce needs.In pvc pipe spare goods, added 5 to 80 parts (weight) 6000 order inorganic material powders in 100 parts of (weight) resins, the insulating electrical casing pipe performance still can reach the performance requriements of JG3050--1998, and can make material cost reduce by 5～15%.
The employed raw material of the embodiment of the invention:
ZS-5 type tubing level polyvinyl chloride resin (Botian Chemical Co., Ltd. Tianjin), 6000 order inorganic material powders (Anhui Xue Na company limited), dustless complex lead salt stabilizer (the good additives for plastics company limited that reaches in Wenzhou), modifier ACR401 (Suzhou Amway chemical industry company limited of Jiization group), anti-impact modifier CPE (Zibo Jiweize Chemical Co., Ltd.), plasticizer DOP (Tianjin solvent factory), stearic acid 200 types (Shanghai Soap Making Co., Ltd.), calcium stearate (Tianjin Lang Hu chemical industry company limited), polyethylene wax (Beijing Yanshan Petrochemical), titanium dioxide A-100 (east, Guangxi rattan titanizing worker company limited), whitening agent (LongXi, Nanjing chemical industry company limited) etc.
The employed equipment of the embodiment of the invention:
The extrusion shaping machine that granulation is used is times Long Keya machinery company limited of parallel dual-screw extruding machine group KY50/100 Nanjing section;
The cold mixer that batch mixing uses is SRL-Z200/500 Yili Machinery Co., Ltd., Zhangjiagang City;
The high mixer that batch mixing uses separate case is applied for a patent, and the patent No. is 200520000496.9;
The polychloroethylene insulating electrical casing pipe extrusion shaping machine is a conical double-screw plastics extruder SJZ-45 Shanghai Jwell Machinary Co., Ltd
Special material for polychloroethylene insulating electrical casing pipe of the present invention, its prescription and consist of (in parts by weight):
Polyvinyl chloride (PVC) 100
Stablizer (commercially available dustless complex lead salt stabilizer) 1.5 to 8
Modifier (commercially available ACR401, polyacrylate(s)) 0.5 to 4
Anti-impact modifier CPE (Zibo Jiweize Chemical Co., Ltd.) 1 to 15
Softening agent (DOP, poly-dioctyl phthalate (DOP)) 1 to 5
Stearic acid (HSt) 0.3 to 1.5
Calcium stearate (CaSt) 0.3 to 1.5
Polyethylene wax (WAX) 0.3 to 1.5
Titanium dioxide (TiO
2) 1 to 4
Whitening agent (commercially available) 0.01 to 0.2
6000 order inorganic material powders (water-ground limestone) 5 to 80
6000 order inorganic material powders in this prescription adopt water-ground limestone, also can adopt light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture.Anti-impact modifier in this prescription adopts CPE, also can adopt polymethylmethacrylate-polyhutadiene-polystyrene copolymer (MBS), polyethylene-polyvinyl acetate multipolymer (EVA), polypropylene cyanogen-polyhutadiene-polystyrene copolymer (ABS) or their mixture.
The preparation method of special material for polychloroethylene insulating electrical casing pipe of the present invention:
A, 6000 purpose inorganic material powders are put into the high mixer high speed mix, treat that temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, adding stearic acid after temperature reaches 110 ℃ to 160 ℃ mixed 5 to 10 minutes, adding anti-impact modifier CPE then mixed 5 to 10 minutes, put compound into cold mixer, discharging after being cooled to 40 ℃ to 50 ℃, the 6000 order inorganic materials pellets that obtain modification through the forcing machine granulation are standby; With polyvinyl chloride (PVC), stablizer, calcium stearate, softening agent (DOP) is put into the high mixer high speed and is mixed stirring, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, in the time of dehumidifier with 6000 order inorganic materials pellets after the modification, polyethylene wax, titanium dioxide, whitening agent is put into high mixer and is continued and mixes, when temperature rises to 105 ℃ to 135 ℃, compound in the high mixer put in the cold mixer cool off, add modifier (ACR401) when being cooled to below 80 ℃, discharging after continuing to be cooled to 30 ℃ to 50 ℃, the material of emitting are the special-purpose powder of polychloroethylene insulating electrical casing pipe.
B, the special-purpose powder of the polyvinyl chloride of above-mentioned preparation is carried out extruding pelletization, make the special-purpose pellet of polychloroethylene insulating electrical casing pipe, the special-purpose pellet of this polychloroethylene insulating electrical casing pipe through the extrusion shaping machine extrusion moulding, is made the polychloroethylene insulating electrical casing pipe of all size.
C, with the special-purpose powder of the polychloroethylene insulating electrical casing pipe of above-mentioned preparation, through the extrusion shaping machine extrusion moulding, make polychloroethylene insulating electrical casing pipe.
Embodiment 1:
Polychloroethylene insulating electrical casing pipe tailored flour material formula:
Polyvinyl chloride (PVC) 100kg
Stablizer (commercially available nondusting lead complex stabilizer) 5kg
Modifier (commercially available ACR401, polyacrylate(s)) 2kg
Anti-impact modifier CPE (Zibo Jiweize Chemical Co., Ltd.) 10kg
Softening agent (DOP, poly-dioctyl phthalate (DOP)) 2kg
Stearic acid (HSt) 0.8kg
Calcium stearate (CaSt) 0.8kg
Polyethylene wax (WAX) 1kg
Titanium dioxide (TiO
2) 2kg
Whitening agent (commercially available) 0.04kg
6000 order inorganic material powder (water-ground limestone) 50kg
6000 order inorganic material powders are put into the high mixer high speed to mix, temperature begins dehumidifier when reaching 80 ℃, adding stearic acid after temperature reaches 110 ℃ mixed 10 minutes, adding anti-impact modifier CPE then mixed 10 minutes, compound is put into cold mixer, discharging after being cooled to 40 ℃ obtains 6000 order inorganic materials pellets of modification through the extrusion shaping machine granulation; Polyvinyl chloride (PVC), softening agent (DOP), stablizer, calcium stearate are put into high-speed mixer and mixing to be stirred, temperature begins dehumidifier when reaching 80 ℃, in the time of dehumidifier 6000 order inorganic materials pellets, polyethylene wax, titanium dioxide, whitening agent after the modification being put into high mixer also continues to mix, when temperature rises to 105 ℃, compound in the high mixer put in the cold mixer cool off, add modifier (ACR401) when being cooled to below 80 ℃, discharging after continuing to be cooled to 30 ℃, the material of emitting are the special-purpose powder of polychloroethylene insulating electrical casing pipe.
6000 order inorganic material powders in this prescription adopt water-ground limestone, also can adopt light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture.Anti-impact modifier in this prescription adopts chlorinatedpolyethylene (CPE), also can adopt polymethylmethacrylate-polyhutadiene-polystyrene copolymer (MBS), polyethylene-polyvinyl acetate multipolymer (EVA), polypropylene cyanogen-polyhutadiene-polystyrene copolymer (ABS) or their mixture.
The special-purpose powder of producing by this prescription of polychloroethylene insulating electrical casing pipe is made the polychloroethylene insulating electrical casing pipe of all size through the extrusion shaping machine extrusion moulding, and the parameter of its extruding-out process (temperature ℃) is as follows:
1 section 2 sections 3 sections 4 sections 5 sections 6 sections die head temperature, 140～140～150～150～160～170～180～℃ 160 160 170 170 180 190 200
The polychloroethylene insulating electrical casing pipe of making is tested by JB3050-1998, the requirement that every item is up to standard: 1. compressive property: Df=22% during load 1min, Df=9% during unloading 1min; 2. impact property: 1 destruction is only arranged in 12 test specimens; 3. bending property: no visible crack; 4. curved flat performance: the gauge deadweight is passed through; 5. drop performance: do not have shatter, fragmentation; 6. resistance toheat: Di=1.8mm; 7. flame retardant properties: self-extinguishing time 33s, oxygen index 34; 8. electric property: do not puncture insulation resistance 105M Ω in the 15min.
Embodiment 2
The special-purpose granular material formula of polychloroethylene insulating electrical casing pipe:
Polyvinyl chloride (PVC) 100kg
Stablizer (commercially available nondusting lead complex stabilizer) 5kg
Modifier (commercially available ACR401, polyacrylate(s)) 2kg
Anti-impact modifier CPE (Zibo Jiweize Chemical Co., Ltd.) 10kg
Softening agent (DOP, poly-dioctyl phthalate (DOP)) 2kg
Stearic acid (HSt) 0.8kg
Calcium stearate (CaSt) 0.8kg
Polyethylene wax (WAX) 1kg
Titanium dioxide (TiO
2) 2kg
Whitening agent (commercially available) 0.04kg
6000 order inorganic material powder (water-ground limestone) 50kg
6000 order inorganic material powders are put into the high mixer high speed to mix, temperature begins dehumidifier when reaching 90 ℃, adding stearic acid after temperature reaches 160 ℃ mixed 5 minutes, adding anti-impact modifier CPE then mixed 5 minutes, compound is put into cold mixer, discharging after being cooled to 50 ℃ obtains 6000 order inorganic materials pellets of modification through extruding pelletization; Polyvinyl chloride (PVC), softening agent (DOP), stablizer, calcium stearate are put into high-speed mixer and mixing to be stirred, temperature begins dehumidifier when reaching 90 ℃, in the time of dehumidifier 6000 order inorganic materials pellets, polyethylene wax, titanium dioxide, whitening agent after the modification being put into high mixer also continues to mix, when temperature rises to 135 ℃, compound in the high mixer put in the cold mixer cool off, add modifier (ACR401) when being cooled to below 80 ℃, discharging after continuing to be cooled to 50 ℃, the material of emitting are the special-purpose powder of polychloroethylene insulating electrical casing pipe.
6000 order inorganic material powders in this prescription adopt water-ground limestone, also can adopt light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture.Anti-impact modifier in this prescription adopts CPE, also can adopt MBS, EVA, ABS or their mixture.
With the special-purpose powder of the polychloroethylene insulating electrical casing pipe of above-mentioned preparation, go up extruding pelletization by following processing condition at twin screw extruder (unit is extruded in the compounding of KY50/100 parallel dual-screw), make the special-purpose pellet of plastic insulation electrical casing pipe of all size, its extruding and pelletizing process (temperature ℃) parameter is as follows:
1 section 2 sections 3 sections 4 sections 5 sections 6 sections die head temperature, 140～140～150～150～160～170～180～℃ 160 160 170 170 180 190 200
The polychloroethylene insulating electrical casing pipe of making is tested by JB3050-1998, the requirement that every item is up to standard: 1. compressive property: Df=22% during load 1min, Df=9% during unloading 1min; 2. impact property: 1 destruction is only arranged in 12 test specimens; 3. bending property: no visible crack; 4. curved flat performance: the gauge deadweight is passed through; 5. drop performance: do not have shatter, fragmentation; 6. resistance toheat: Di=1.8mm; 7. flame retardant properties: self-extinguishing time 33s, oxygen index 34; 8. electric property: do not puncture insulation resistance 105M Ω in the 15min.
Embodiment 3:
The special-purpose granular material formula of polychloroethylene insulating electrical casing pipe:
Polyvinyl chloride (PVC) 100kg
Stablizer (commercially available nondusting lead complex stabilizer) 3kg
Modifier (commercially available ACR401, polyacrylate(s)) 1kg
Anti-impact modifier CPE (Zibo Jiweize Chemical Co., Ltd.) 1.5kg
Softening agent (DOP, poly-dioctyl phthalate (DOP)) 1kg
Stearic acid (HSt) 0.5kg
Calcium stearate (CaSt) 0.5kg
Polyethylene wax (WAX) 0.6kg
Titanium dioxide (TiO
2) 1.5kg
Whitening agent (commercially available) 0.02kg
6000 order inorganic material powder (water-ground limestone) 5kg
6000 order inorganic material powders in this prescription adopt water-ground limestone, also can adopt light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture.Anti-impact modifier in this prescription adopts CPE, also can adopt MBS, EVA, ABS or their mixture.
Mixing of materials technology, extruding and pelletizing process (temperature ℃) parameter and extruding-out process (temperature ℃) parameter is identical with embodiment 2, the polychloroethylene insulating electrical casing pipe of making is tested by JB3050-1998, the requirement that every item is up to standard: 1. compressive property: Df=24% during load 1min, Df=8% during unloading 1min; 2. impact property: 12 test specimens do not have destruction; 3. bending property: no visible crack; 4. curved flat performance: the gauge deadweight is passed through; 5. drop performance: do not have shatter, fragmentation; 6. resistance toheat: Di=1.6mm; 7. flame retardant properties: self-extinguishing time 32s, oxygen index 33; 8. electric property: do not puncture insulation resistance 103M Ω in the 15min.
Embodiment 4:
The special-purpose granular material formula of igelite insulating electrical casing pipe:
Polyvinyl chloride (PVC) 100kg
Stablizer (commercially available dustless complex lead salt stabilizer) 6.5kg
Modifier (commercially available ACR401, polyacrylate(s)) 4kg
Anti-impact modifier CPE (Zibo Jiweize Chemical Co., Ltd.) 15kg
Softening agent (DOP, poly-dioctyl phthalate (DOP)) 4kg
Stearic acid (HSt) 1.2kg
Calcium stearate (CaSt) 1.2kg
Polyethylene wax (WAX) 1.5kg
Titanium dioxide (TiO
2) 2.5kg
Whitening agent (commercially available) 0.05kg
6000 order inorganic material powder (water-ground limestone) 80kg
6000 order inorganic material powders in this prescription adopt water-ground limestone, also can adopt light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture.Anti-impact modifier in this prescription adopts CPE, also can adopt MBS, EVA, ABS or their mixture.
Mixing of materials technology, extruding and pelletizing process (temperature ℃) parameter and extruding-out process (temperature ℃) parameter is identical with embodiment 2, the polychloroethylene insulating electrical casing pipe of making is tested by JB3050-1998, the requirement that every item is up to standard: 1. compressive property: Df=22% during load 1min, Df=9% during unloading 1min; 2. impact property: 2 destructions are only arranged in 12 test specimens; 3. bending property: no visible crack; 4. curved flat performance: the gauge deadweight is passed through; 5. drop performance: do not have shatter, fragmentation; 6. resistance toheat: Di=1.9mm; 7. flame retardant properties: self-extinguishing time 33s, oxygen index 35; 8. electric property: do not puncture insulation resistance 106M Ω in the 15min.
Above examples of implementation can be according to practical situation, under the prerequisite that does not reduce the performance pointer, select for use 6000 order inorganic material powders of different additions to reach the purpose that reduces production costs, can save 5%～15% cost according to the different additions and the product comparison of corresponding common fillers.
Select for use 6000 order inorganic material powders with inorganic rigid particle strengthen, toughness reinforcing theory is as the research theory foundation.
In the physically modified of PVC, properties-correcting agent is distinguished flexible body and inelastic body two classes by amount of rigidity.Though can obtain comparatively ideal toughness with elastomeric method, increase the loading level of cheap properties-correcting agent, reduced intensity, rigidity, thermotolerance and the processing fluidity of material, be to be that cost reaches the purpose that reduces cost to sacrifice certain mechanical property.But not elastic body toughening then is a kind of newer method, especially developed recently " inorganic rigid particle strengthens, toughness reinforcing theory " that get up, not only can improve toughness, rigidity, the increase size stability of PVC, but also can make intensity, modulus, heat-drawn wire, processing fluidity obtain suitable improvement.
This theory general solution is interpreted as: inorganic particulate is dispersed in the matrix resin, and when being subjected to external impacts, because the existence of inorganic particulate has produced stress concentration effect, resin produces crack splitting around causing.Simultaneously, the matrix between the particle has also produced viscous deformation, absorbs striking energy, thereby reaches toughening effect; The existence of inorganic particulate is obstructed and passivation the matrix cracking expansion, finally stops the unlikely destructiveness cracking that develops into of tiny crack; Along with the particle diameter of particle attenuates, the specific surface area of particle increases, and particle increases with the matrix contact area, and material can produce more crack crackle and viscous deformation when being hit, thus the absorption energy.Another kind of mechanism is thought two tensile stresss very that act on of matrix and particle, and the position is a stress under the line, because the effect of power, near the effect that can be stressed the equator of particle helps surrendering appearance.In addition, because the two poles of the earth are subjected to action of pulling stress, when the interface cementability is more weak, the interface unsticking can at first take place at the two poles of the earth, form a hole around being equivalent to make particle, according to the stress distribution for the hole, the stress on the equatorial plane of hole is 3 times of this body stress.Therefore, when this body stress did not reach the matrix yielding stress as yet, partial points had begun to produce surrender, promptly equally also impelled the matrix surrender, and comprehensive effect improves the toughness of superpolymer.
By to different-grain diameter CaCO
3With discovering of PVC compound system performance: under the situation that inorganic rigid particle is not reunited, the more little resulting composite property of particle diameter is good more, especially adds an amount of nanometer CaCO in the co-mixing system
3During particle, its shock strength, tensile strength and elongation at break all can be improved simultaneously.Mechanochemical method modified Nano CaCO
3, its interaction between homodisperse and interface in the PVC matrix is strengthened, thereby cause its shock strength, elongation at break, tensile modulus all to increase considerably, and tensile strength almost remains unchanged; But, work as CaCO
3Consumption surpasses at 15% o'clock, nano level CaCO
3The matrix material of modification all is lower than by micron order CaCO on tensile strength and notched Izod impact strength
3The composite system of modification.By analysis, particle diameter is thin more, the phenomenon of powder generation secondary agglomeration is serious more, though the particle diameter of addition material is thin more in theory, add the enhancing that obtains in the polymkeric substance to, toughness reinforcing mechanical property is outstanding more, because the as easy as rolling off a log generation secondary agglomeration of nano-powder, the true particle diameter of nano-powder is often much larger than theoretical particle diameter during application but in fact.May command still under laboratory environment, in case be amplified to interim test, the quality of product not only can not improve and occurs the phenomenon that descends on the contrary.
Therefore, the 6000 order inorganic material powders that the present invention uses, 90% of its particle diameter (can be expressed as D less than 2 microns
90≤ 2 μ m), both had the advantage of part nano-powder, solved the shortcoming of nano-powder " easily reunion, the difficult dispersion " again substantially.Special process method of the present invention also is important measures of head it off, by give 6000 order inorganic material powders after the modification coat inorganic material powder that one deck anti-impact modifier makes interpolation by inorganic nature to organic sex reversal, by surface hydrophilic oleophobic performance, change the oleophilic drainage performance into, the problem of particle aggregation and bad dispersibility when successfully having solved the interpolation of 6000 order inorganic material powders, it is dispersed and compatible to make polyvinyl chloride (PVC) materials processing system improve, improvement system flowing property and processing characteristics, and can give goods better physical mechanical property, make the substrate material polyvinyl chloride performance of insulating electrical casing pipe PP Pipe Compound obtain toughened and reinforced.
The result of study of the comprehensive domestic and international 6000 order powders of the present invention, it is more and more higher to think that 6000 status of order powder in the modifying plastics field are bound to, and it uses the more and more maturation that also is bound to; Start with from the utilisation technology of micron order 6000 order powders, overcome the problem that nano-powder runs into, it is technical characterictic of the present invention that 6000 mesh inorganic powders are applied to polychloroethylene insulating electrical casing pipe.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. a special material for polychloroethylene insulating electrical casing pipe comprises polyvinyl chloride, stablizer, modifier, anti-impact modifier, softening agent, stearic acid, calcium stearate, polyethylene wax, pigment; It is characterized in that, also comprise 6000 order inorganic material powders; This inorganic material powder is 6000 purpose water-ground limestones, light calcium carbonate, kaolin, talcum powder, silicon-dioxide, magnesium hydroxide, aluminium hydroxide, wollastonite or their mixture, its particle diameter 90% less than 2 microns; Described anti-impact modifier is chlorinatedpolyethylene, polymethylmethacrylate-polyhutadiene-polystyrene copolymer, polyethylene-polyvinyl acetate multipolymer, polypropylene cyanogen-polyhutadiene-polystyrene copolymer or their mixture; Described pigment is titanium dioxide, whitening agent or toner.
2. special material for polychloroethylene insulating electrical casing pipe according to claim 1 is characterized in that, the parts by weight of described polyvinyl chloride are 100; The parts by weight of described stablizer are 1.5 to 8; The parts by weight of modifier are 0.5 to 4; The parts by weight of anti-impact modifier are 1 to 15; The parts by weight of softening agent are 1 to 5; Stearic parts by weight are 0.3 to 1.5; The parts by weight of calcium stearate are 0.3 to 1.5; The parts by weight of polyethylene wax are 0.3 to 1.5; The parts by weight of titanium dioxide are 1 to 4; The parts by weight of whitening agent are 0.01 to 0.2; The parts by weight of 6000 order inorganic material powders are 5 to 80.
3. the preparation method of the described special material for polychloroethylene insulating electrical casing pipe of claim 1, it is characterized in that, 1. 6000 order inorganic material powders after will measuring are put into the high mixer high speed and are mixed, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, after temperature reaches 110 ℃ to 160 ℃, add stearic acid and mix stirring 5 to 10 minutes, add anti-impact modifier again and mix stirring 5 to 10 minutes, then the compound in the high mixer is put in the cold mixer and cooled off, be cooled to the 6000 order inorganic material powders that discharging after 30 ℃ to 50 ℃ obtains modification; 2. with 6000 order inorganic material powders after the modification through the forcing machine extruding pelletization, make 6000 order inorganic materials pellets; 3. with polyvinyl chloride (PVC), stablizer, calcium stearate, softening agent (DOP) is put into the high mixer high speed and is mixed stirring, temperature begins dehumidifier when reaching 80 ℃ to 90 ℃, in the time of dehumidifier with 6000 order inorganic materials pellets after the modification, polyethylene wax, titanium dioxide, whitening agent is put into high mixer and is continued to mix and stir, when temperature rises to 105 ℃ to 135 ℃, compound in the high mixer put in the cold mixer cool off, add modifier (ACR401) when being cooled to 70 ℃ to 80 ℃, discharging after continuing to be cooled to 30 ℃ to 50 ℃, the material of emitting are the special-purpose powder of polychloroethylene insulating electrical casing pipe.
4. the application of the described special material for polychloroethylene insulating electrical casing pipe of claim 1 is characterized in that, the special-purpose powder of polychloroethylene insulating electrical casing pipe is made the special-purpose pellet of polychloroethylene insulating electrical casing pipe through the forcing machine extruding pelletization; The special-purpose pellet of this polychloroethylene insulating electrical casing pipe is made polychloroethylene insulating electrical casing pipe through extruder for shaping.
5. the application of the described special material for polychloroethylene insulating electrical casing pipe of claim 1 is characterized in that, the special-purpose powder of polychloroethylene insulating electrical casing pipe directly through extruder for shaping, is made polychloroethylene insulating electrical casing pipe.
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| CNA2006101292229A CN101177512A (en) | 2006-11-06 | 2006-11-06 | Special material for polychloroethylene insulating electrical casing pipe |
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|---|---|---|---|
| CNA2006101292229A CN101177512A (en) | 2006-11-06 | 2006-11-06 | Special material for polychloroethylene insulating electrical casing pipe |
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|---|---|---|---|
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