CN102585336A - Chemical foaming high density polyethylene insulation material and preparation method thereof - Google Patents
Chemical foaming high density polyethylene insulation material and preparation method thereof Download PDFInfo
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- CN102585336A CN102585336A CN201210069663XA CN201210069663A CN102585336A CN 102585336 A CN102585336 A CN 102585336A CN 201210069663X A CN201210069663X A CN 201210069663XA CN 201210069663 A CN201210069663 A CN 201210069663A CN 102585336 A CN102585336 A CN 102585336A
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- Prior art keywords
- density polyethylene
- insulation material
- high density
- hdpe
- chemicalfoaming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a chemical foaming high density polyethylene insulation material and a preparation method thereof. The insulation material mainly comprises the following components in part by weight: 100 parts of high density polyethylene resin, 0.6 part of modified azodicarbonamide (AC) foaming agent, 0.5 part of antioxidant A, 0.3 part of antioxidant B and 0.1 part of rheological agent. The chemical foaming high density polyethylene insulation material is prepared by uniformly mixing the components in a mixer and performing extrusion granulation in a double-screw extruder. The insulation material has the foaming degree of 36 to 40 percent, can produce uniform and dispersed foams, has a smooth surface, is suitable for high-speed thin-wall extrusion (extrusion speed is more than 1,200m/min), and can meet the standard requirements of YD/T760, YD/T1019, YD/T1820, YD/T1174, REAPE, ICEA S-84-608 and the like, and precipitates are not produced in the production process.
Description
One, technical field
The present invention relates to a kind of high density polyethylene(HDPE) Insulation Material that is used for telecommunication cable and preparation method thereof, relate in particular to a kind of chemicalfoaming high density polyethylene(HDPE) Insulating Material and Preparation Method.
Two, background technology
In the process of producing telecommunication cable; Usually adopted solid insulating material in the past; Along with the raising of development of Communication Technique and Internet technology, require to realize that large vol, high-quality data and picture transmit, require transmission speed faster; Transmission frequency is higher, reduces the usage quantity of insulating material simultaneously.Since bringing into use chemicalfoaming high density polyethylene(HDPE) Insulation Material to replace solid insulating material from the nineties in last century, up to the present, nearly several ten thousand tons of annual a large amount of this kind materials that use of China are monopolized by foreign enterprise always.
Chemicalfoaming high density polyethylene(HDPE) Insulation Material technological difficulties mainly are: the high speed thin-walled is extruded on the one hand, requires good fluidity, smooth surface, and homemade common high-density polyethylene resin has satisfied not requirement at present; Stable in order to ensure the electric property of electric wire on the other hand, require foam degrees must stablize, evenly, and there is bad dispersibility in existing high-temperature foaming agent AC, shortcomings such as degradation production corroding metal mould, thus cause foam degrees unstable, need modification; Process aspect adopts traditional simple blend method to be easy to cause dispersion inhomogeneous on the one hand again, finally influences quality product.
Three, summary of the invention
The objective of the invention is to overcome these technology three big shortcomings of puzzlement; A kind of chemicalfoaming high density polyethylene(HDPE) Insulating Material and Preparation Method is provided; Its foam degrees is 36～40%; And can produce uniformity dispersive foam, smooth surface is fit to the high speed thin-walled and extrudes (extruded velocity is greater than 1200m/min); Do not have in process of production that any precipitate produces, and can satisfy standard-requireds such as YD/T760, YD/T1019, YD/T1820, YD/T1174 and REA PE, ICEA S-84-608.
For realizing above purpose, the technical scheme of taking of the present invention is:
A kind of chemicalfoaming high density polyethylene(HDPE) Insulation Material, the main composition and the content of said Insulation Material calculate by weight:
Wherein:
Said high-density polyethylene resin is preferential adopt molten refer to be 0.6～0.9g/10min (190 ℃/2.16kg), MWD>=80, density is 0.940～0.95g/cm
3Resin.
Said modification AC whipping agent preferentially adopts the modification Cellmic C 121, includes acid absorber thermal silica and dispersion agent calcium dodecylbenzene sulphonate.
Said oxidation inhibitor A preferentially adopts 4.4-thiobis (the 6-tertiary butyl-3-methylphenol).
Preferential pair (3, the 5-di-t-butyl-4-hydroxyl-phenylpropyl alcohol acyl) hydrazines that adopt of said oxidation inhibitor B.
Processing aid preferentially adopts fluoropolymer additive.
The preparation method of chemicalfoaming high density polyethylene(HDPE) Insulation Material of the present invention is:
A kind of preparation method of chemicalfoaming high density polyethylene(HDPE) Insulation Material is characterized in that, chemicalfoaming high density polyethylene(HDPE) Insulation Material; Divide A and B material, the A material is high-density polyethylene resin, and B expects for will remove all raw material mixture outside the high-density polyethylene resin; Weight-loss metering feeding machine A is put in the metering of A material, and the mixing machine mixing is put in the metering of B material, also puts into weight-loss metering feeding machine B then; The B material metering that to see off by weight-loss metering feeding machine A afterwards, see off with feeding B by weight-loss metering, through the metering of mixing machine blended B material, by the twin screw extruder extruding pelletization; Through water-cooled tie rod blank operation, dehydrate last cooling packing more afterwards; Accomplish whole operation, wherein extrusion temperature is 120～150 ℃, and extruded velocity is 30HZ (speed control by frequency variation).
Divide A and B material, the A material is high-density polyethylene resin, and B expects for will remove all raw material mixture outside the high-density polyethylene resin.Send into mixing machine after B material prepares according to separately parts by weight and mix, A, B material are put into the weight-loss metering drawing-in device respectively then, set the feeding parameter according to parts by weight in the said prescription, are the twin screw extruder extruding pelletization of 50mm at diameter.Wherein extrusion temperature is 120～150 ℃, and extruded velocity is 30HZ (speed control by frequency variation).
Adopt the cable salient features of the affiliated chemicalfoaming high density polyethylene(HDPE) Insulation Material of the present invention to require like following table 1:
Table 1
| Sequence number | Test subject | Unit | Requirement |
| 1 | Density | g/cm 3 | 0.941～0.959 |
| 2 | Melt flow rate(MFR) (190 ℃/2.16kg) | g/10min | ≤1.0 |
| 3 | Tensile strength | MPa | ≥19 |
| 4 | Elongation at break | ％ | ≥400 |
| 5 | Specific inductivity | ≤2.36 | |
| 6 | Dielectric dissipation factor | ≤0.001 | |
| 7 | Volume specific resistance in the time of 20 ℃ | Ω·m | ≥1.0×10 13 |
| 8 | Oxidation induction period | min | ≥30 |
| 9 | Impact embrittlement temperature | -76 ℃, individual | ≤0/10 |
Four, description of drawings
Below in conjunction with accompanying drawing and embodiment invention is further specified.
Fig. 1 is a schematic flow sheet of the present invention.
Five, embodiment
In the following embodiment of the invention, used starting material are commercially available industrial goods.
Chemicalfoaming high density polyethylene(HDPE) Insulation Material of the present invention, it is mainly formed with content and is by weight percentage:
Said high-density polyethylene resin is 0.6～0.9 for molten the finger, MWD >=80, and density is 0.940～0.950 resin.
Said modification AC whipping agent is the modification Cellmic C 121.
Said oxidation inhibitor A is 4.4-thiobis (the 6-tertiary butyl-3-methylphenol).
Said oxidation inhibitor B is tricresyl phosphite (2, a 4-and tert-butyl-phenyl) ester.
Said processing aid is a fluoropolymer additive.
In conjunction with Fig. 1, details are as follows for the preparing method's of chemicalfoaming high density polyethylene(HDPE) Insulation Material of the present invention embodiment: chemicalfoaming high density polyethylene(HDPE) Insulation Material, divide A and B material; The A material is high-density polyethylene resin, and B expects for will remove all raw material mixture outside the high-density polyethylene resin, and weight-loss metering feeding machine A2 is put in A material metering 1; And mixing machine mixing 4 is put in B material metering 3; Also put into weight-loss metering feeding machine B5 then, that the A material that will be seen off by weight-loss metering feeding machine A2 is afterwards seen off with the feeding B5 by weight-loss metering, send into twin screw extruder through mixing machine blended B material, by twin screw extruder extruding pelletization 6; Again through water-cooled tie rod blank 7 operations; Dehydrate 8 afterwards, last cooling packing 9 is accomplished whole operation; Wherein extrusion temperature is 120～150 ℃, and extruded velocity is 30HZ (speed control by frequency variation).
Present embodiment is prepared according to weight part shown in each component in the table 2:
Table 2
| Project | The A material | The B material |
| High-density polyethylene resin | 100 | |
| The AC modified foaming agent | ?0.6 | |
| Oxidation inhibitor A | ?0.5 | |
| Oxidation inhibitor B | ?0.3 | |
| Rheological agent | ?0.1 |
The preparation method:
Parts by weight according to the material of the A in the table directly join weight-loss metering feeding machine A with starting material; B material is put into weight-loss metering feeding machine B after then accurately putting into mixing machine after the metering and mix according to each composition weight umber again; A is set in requirement in advance on operating panel, B expects weight, starts feeding machine simultaneously and is uniformly dispersed with consistent with assurance, then extruding pelletization in twin screw extruder; Wherein the mixing machine capacity is for being 200L; Use the twin screw extruder granulation of diameter as 50mm, extrusion temperature is 120～150 ℃, and extruded velocity is 30HZ.
Adopt the CABLE MATERIALS performance that obtains according to the invention as shown in table 3: forcing machine is the single screw rod cable of a 45mm forcing machine, and extrusion temperature is 160～210 ℃, and extruded velocity is 1000m/min, and wire core diameter is 0.4mm.
Table 3
Can find out the complete conformance with standard requirement of the electric wire of making from table 3.
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 scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (7)
1. a chemicalfoaming high density polyethylene(HDPE) Insulation Material is characterized in that, it is mainly formed with content and is by weight percentage:
2. chemicalfoaming high density polyethylene(HDPE) Insulation Material according to claim 1 is characterized in that, said high-density polyethylene resin is 0.6～0.9g/10min g/10min for molten the finger, MWD>=80, and density is 0.940～0.950g/cm
3Resin.
3. chemicalfoaming high density polyethylene(HDPE) Insulation Material according to claim 1 is characterized in that, said modification AC whipping agent is the modification Cellmic C 121.
4. chemicalfoaming high density polyethylene(HDPE) Insulation Material according to claim 1 is characterized in that, said oxidation inhibitor A is 4.4-thiobis (the 6-tertiary butyl-3-methylphenol).
5. chemicalfoaming high density polyethylene(HDPE) Insulation Material according to claim 1 is characterized in that, said oxidation inhibitor B is tricresyl phosphite (2, a 4-and tert-butyl-phenyl) ester.
6. chemicalfoaming high density polyethylene(HDPE) Insulation Material according to claim 1 is characterized in that said processing aid is a fluoropolymer additive.
7. the preparation method of a chemicalfoaming high density polyethylene(HDPE) Insulation Material as claimed in claim 1 is characterized in that, chemicalfoaming high density polyethylene(HDPE) Insulation Material; Divide A and B material, the A material is high-density polyethylene resin, and B expects for will remove all raw material mixture outside the high-density polyethylene resin; Weight-loss metering feeding machine A (2) is put in A material metering (1) soon, and mixing machine mixing (4) is put in B material metering (3), puts into weight-loss metering feeding machine B (5) then; The A material that to see off by weight-loss metering feeding machine A (2) afterwards, the B that sees off with feeding B (5) by weight-loss metering, mixes (4) through mixing machine expects, by twin screw extruder extruding pelletization (6); Again through water-cooled tie rod blank (7) operation; Dehydrate (8) afterwards, last cooling packing (9) is accomplished whole operation; Wherein extrusion temperature is 120～150 ℃, and extruded velocity is 30HZ (speed control by frequency variation).
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| CN201210069663XA CN102585336A (en) | 2012-03-16 | 2012-03-16 | Chemical foaming high density polyethylene insulation material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000270A (en) * | 2012-11-02 | 2013-03-27 | 深圳市沃尔核材股份有限公司 | SFP (small form-factor pluggable) high-frequency wire and method for producing same |
| CN104816399A (en) * | 2015-04-22 | 2015-08-05 | 江苏申源新材料有限公司 | Production device and method of organosilane crosslinked polyethylene plastics for wires and cables |
| CN104760151B (en) * | 2015-04-22 | 2016-08-24 | 盐城申源塑胶有限公司 | A kind of elevator cable protective cover material |
Citations (3)
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|---|---|---|---|---|
| CN1464006A (en) * | 2002-06-21 | 2003-12-31 | 中国石化集团齐鲁石油化工公司 | Polyethylene foam insulation composition for telecommunication cable and process for preparing the same |
| CN101575432A (en) * | 2009-06-10 | 2009-11-11 | 中科英华高技术股份有限公司 | Radiation crosslinking foaming heat shrinkable pipe material and preparation method |
| CN101633757A (en) * | 2009-08-27 | 2010-01-27 | 杭州临安光大线缆有限公司 | Method for preparing coaxial cable core wire foaming insulation layer composition |
-
2012
- 2012-03-16 CN CN201210069663XA patent/CN102585336A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1464006A (en) * | 2002-06-21 | 2003-12-31 | 中国石化集团齐鲁石油化工公司 | Polyethylene foam insulation composition for telecommunication cable and process for preparing the same |
| CN101575432A (en) * | 2009-06-10 | 2009-11-11 | 中科英华高技术股份有限公司 | Radiation crosslinking foaming heat shrinkable pipe material and preparation method |
| CN101633757A (en) * | 2009-08-27 | 2010-01-27 | 杭州临安光大线缆有限公司 | Method for preparing coaxial cable core wire foaming insulation layer composition |
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| 《江西化工》 20070930 潘英曙 "改性AC发泡剂的现状与发展对策" 19-23 1,2 , 第3期 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000270A (en) * | 2012-11-02 | 2013-03-27 | 深圳市沃尔核材股份有限公司 | SFP (small form-factor pluggable) high-frequency wire and method for producing same |
| CN103000270B (en) * | 2012-11-02 | 2015-09-23 | 深圳市沃尔核材股份有限公司 | A kind of SFP high-frequency line and production method thereof |
| CN104816399A (en) * | 2015-04-22 | 2015-08-05 | 江苏申源新材料有限公司 | Production device and method of organosilane crosslinked polyethylene plastics for wires and cables |
| CN104816399B (en) * | 2015-04-22 | 2016-07-06 | 江苏申源新材料有限公司 | A kind of electric wire silane crosslinked polyethylene plastic |
| CN104760151B (en) * | 2015-04-22 | 2016-08-24 | 盐城申源塑胶有限公司 | A kind of elevator cable protective cover material |
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Application publication date: 20120718 |