CN1027328C - Production of insulating material for communication cables with high-density polythene - Google Patents
Production of insulating material for communication cables with high-density polythene Download PDFInfo
- Publication number
- CN1027328C CN1027328C CN 90106289 CN90106289A CN1027328C CN 1027328 C CN1027328 C CN 1027328C CN 90106289 CN90106289 CN 90106289 CN 90106289 A CN90106289 A CN 90106289A CN 1027328 C CN1027328 C CN 1027328C
- Authority
- CN
- China
- Prior art keywords
- hdpe
- insulating material
- communication cable
- cable insulating
- density
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The present invention discloses a special communication cable insulating material and a production method thereof, which belongs to the technical field of the application of plastic processing. The special communication cable insulating material is produced by the mixture of HDPE with the density is 0.940 to 0.959 gram / cubic centimeter and a melt index of 0.05 to 1.0g/10 min, and HDPE with the density of 0.940 to 0.959 gram / cubic centimeter and the melt index of 3 to 10g/10 min. The method has the advantages of simplicity, easy operation, easy obtaining of raw materials, and good product quality, particularly good mechanical property. The special material can replace an imported communication cable insulating material and has great economic benefits. The technology is suitable for being popularized and applied to China.
Description
The invention discloses a kind of communication cable insulating layer used PP Pipe Compound and manufacture method thereof, belong to cables manufacturing and technical field of plastic.
As the HDPE(high density polyethylene (HDPE)) communication cable insulating material, not only require it to have good electrical properties, mechanical property, heat-resisting, anti-environment, weather, performance such as wear-resisting, also to satisfy simultaneously harsh High-speed machining performance demands, as with the speed more than the 1000m/min processing electric wire time, should make equipment keep rational back pressure and guarantee electric wire smooth surface etc.Common HDPE resin can't satisfy above-mentioned requirements simultaneously, the manufacture method of existing P E class communication cable insulating material mainly contains two kinds of approach, the one, by the direct polymerization production of resin production plant PP Pipe Compound product, the 2nd, form by several basic resin compoundings, preceding a kind of approach is adopted widely in the flourishing countries and regions of technology, HDPE communication cable insulating material DGDK3364 as U.S.'s union carbide corporation is exactly the product of direct polymerization, because of it has good physical property and processing characteristics, comparatively be in great demand in recent years always, but direct polymerization production technology complexity, must on special equipment, adopt special-purpose catalyst, special-purpose technology, and investment is big, it is difficult to change the line of production, none grasps this PP Pipe Compound production technology the present all polyethylene production factories of China, therefore if can prepare communication cable insulating material by method of compounding by basic resin with same performance, be undoubtedly a shortcut, present existing compounding technology mainly is to adopt HDPE and MDPE(medium density polyethylene) blend, or employing HDPE and LDPE(low density polyethylene (LDPE)) blend, wherein typical technology such as Japan Patent spy open clear 58-223210, this patent is when describing a kind of production method of cellular insulation material, be the method that adopts HDPE and LDPE blend, wherein specifically consist of: (1) density is 0.94～0.96g/cm
3, melt index (MI) is the HDPE of 0.3～2g/10min, and weight content is 80～97%, and (2) density is 0.921～0.934g/cm
3, melt index (MI) is the LDPE less than 10g/10min, weight content is 3～20%.
The difference of the present invention and above patent has been to find a kind of new raw material route and the preparation method of cable insulating material, promptly adopt the common HDPE blend of two kinds of different performances to prepare communication cable insulating material, and these two kinds of common HDPE both can be that polymerization product also can be a blend product, that is final insulation material product also can be that two or more PE blend forms, and still do not have therewith technology roughly the same both at home and abroad.
The objective of the invention is to attempt to start a kind of simple and easy to do cheaply route of the HDPE of manufacturing communication cable insulating material, at the polymerization technique that does not possess the HDPE special insulating material, under can only the prerequisite of production basic resin, utilize the mode of blend also can obtain the HDPE communication cable insulating material, because in recent years, a few cover PE process unitss that China introduces are to produce HDPE, and the HDPE Insulation Material replaced other Insulation Material gradually with its excellent comprehensive performances, so this technology is particularly suitable for the development trend of China's national situation and cable insulating material.
Key problem in technology of the present invention is to adopt two kinds of complementary on performance HDPE, prepare the HDPE communication cable insulating material with appropriate proportioning and process, make it to reach the well balanced of physical property and processing characteristics, two kinds of HDPE(A of the present invention) and rerum natura (B) as follows:
(A): density is 0.940～0.959g/cm
3
Melt index (MI) is 0.05～1.0g/10min
Tensile strength is not less than 22MPa
Elongation at break is not less than 800%
(B): density is 0.940～0.959g/cm
3
Melt index (MI) is 3～10g/10Min
Tensile strength is not less than 20MPa
Wherein the weight content of (A) is 40～95%, (B) weight content is 5～60%, and the dihydroxy benzenes formylhydrazine class copper resistant agent of blending 0.05～0.3% simultaneously, at this, (A) and (B) both can be the basic resin (DGDB2480, the DGDA6098, DGD6084, DMD6130 and DMD7006, the DMD7008 etc. that adopt the UNIPOL technology to produce as Qilu Petrochemical company are respectively (A) and preferable raw material (B)) of the direct polymerization of PE process units, also can prepare by the method (as adopting HDPE and LLDPE blend) of blend.
As everyone knows; blending technology commonly used mainly comprises processes such as the mixing of raw material, the pulverizing of plasticating, being smelt thing or granulation, when the above-mentioned HDPE communication cable insulating material of preparation, passes through said process too; during concrete enforcement, can take the circumstances into consideration to adopt one-step method or two-step method according to the blend effect.One-step method is promptly once all mixed each raw material components the back granulation, two-step method is to make master batch in advance after at first the part material component evenly being mixed, again master batch is mixed back granulation (referring to embodiment) with other raw material components, can adopt two-step method when one-step method is difficult for making raw material evenly to mix, the prilling temperature of Insulation Material preparation process is advisable with 170～220 ℃.
Characteristics of the present invention are that implementing process is simple and easy to do, raw material sources are extensive, production cost is low, change the line of production easily, investment not, instant effect, and the Insulation Material combination property is extremely excellent, to change in the past the almost completely situation of dependence on import material of China's cable processing industry, following discloses two specific embodiments of the present invention (referring to table 1) with this substituting import one special insulating material.
Embodiment 1:
HDPE(A in the present embodiment) be basic resin HDPE(C) and blend LLDPE(D), HDPE(B) also be basic resin, its final products are three kinds of PE basic resin and 1, the blend of 2-dihydroxy benzenes formylhydrazine makes, during enforcement, at first with (C), (D) in 64: 36 the ratio input high speed agitator, at 30 ℃, mix 3min under the condition of 1500r/min, adopt PLD-651 type extrusion molding instrument to obtain (A) then 175 ℃ of granulations, again in 88: 12: 0.1 ratio with (A), (B) and 1,2-dihydroxy benzenes formylhydrazine drops in the high speed agitator, at 30 ℃, mixes 5min under the condition of 1500r/min, promptly get Insulation Material in the granulation of 180 ℃ of employing PLD-651 type extrusion molding instrument again, the Insulation Material performance is as shown in table 1.
Embodiment 2:
The final products of present embodiment are two kinds of HDPE basic resin and 1, the blend of 2-dihydroxy benzenes formylhydrazine makes, at first with HDPE(A) and (B) and 1,55: 45: 0.1 ratio of 2-dihydroxy benzenes formyl drops in the high speed agitator, at 30 ℃, mix 5min under the condition of 1500r/miN, adopt the granulation under 220 ℃ condition of PLD-651 type extrusion molding instrument promptly to get Insulation Material then, the Insulation Material performance is as shown in table 1.
Table 1 embodiment table
Material proportion and performance embodiment 1 embodiment 2
HDPE density (g/cm
3) 0.957 nothing
C） MI（g/10min） 0.3
HDPE LLDPE density (g/cm
3) 0.922 nothing
（A） （D） MI（g/10min） 2.0
(C)/(D) weight (%) 64/36 does not have
Density (g/cm
3) 0.943 0.941
MI（g/10min） 0.6 0.1
HDPE density (g/cm
3) 0.956 0.959
（B） MI（g/10min） 7.4 8.3
(A)/(B) weight (%) 88,/12 55/45
Density (g/cm
3) 0.945 0.949
Exhausted MI(g/10min) 0.8 0.7
Edge tensile strength (MPa)＞22.0＞22.0
Property elongation at break (%)＞800＞800
Can ESCR F
20(hr)＞24＞100
Cable process velocity (m/min) can reach 1800 can reach 1800
Density, MI, tensile strength and elongation at break, ESCR measure by the requirement of ASTMD1505, ASTMD1238, ASTMD638, ASTMD1693 successively in the table.
Claims (5)
1, a kind of communication cable insulating PP Pipe Compound, belong to plastics processing and application technology, this PP Pipe Compound is main component with HDPE, it is characterized in that mainly adopting two kinds of different HDPE (A) and (B) blend form, wherein the weight content of (A) is 40～95%, (B) weight content is 5～60%, and basic physical properties index (A) and (B) is as follows:
(A): density is 0.940～0.959g/cm
3
Melt index (MI) is 0.05～1.0g/10min
Tensile strength is not less than 22MPa
Elongation at break is not less than 800%
(B): density is 0.940～0.959g/cm
3
Melt index (MI) is 3～10g/10min
Tensile strength is not less than 20MPa
2, communication cable insulating material according to claim 1 is characterized in that wherein containing weight content and is 0.05～0.3% copper resistant agent dihydroxy benzenes formylhydrazine.
3, communication cable insulating material according to claim 1 is characterized in that used raw material (A) and (B) both can be the basic resin of the direct polymerization of HDPE process units, also can be got by several basic resin blend.
4, communication cable insulating material according to claim 1 is characterized in that its HDPE(A) the melt index (MI) optimum value be 0.1～0.8g/10min, melt index (MI) optimum value HDPE(B) is 6～8g/10min.
5, communication cable insulating material according to claim 1, the optimum temperature of granulation process is 170～220 ℃ when it is characterized in that preparing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106289 CN1027328C (en) | 1990-10-15 | 1990-10-15 | Production of insulating material for communication cables with high-density polythene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106289 CN1027328C (en) | 1990-10-15 | 1990-10-15 | Production of insulating material for communication cables with high-density polythene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055620A CN1055620A (en) | 1991-10-23 |
| CN1027328C true CN1027328C (en) | 1995-01-04 |
Family
ID=4879933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106289 Expired - Fee Related CN1027328C (en) | 1990-10-15 | 1990-10-15 | Production of insulating material for communication cables with high-density polythene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027328C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062284C (en) * | 1996-09-28 | 2001-02-21 | 扬中市有机化工厂 | Preparation of silane cross-linking polyethylene as electric cable material |
| CN103571004B (en) * | 2012-07-23 | 2016-03-30 | 中国石油化工股份有限公司 | A kind of for high speed extrusion insulating material for communication cables and preparation method thereof |
| CN104558747B (en) * | 2013-10-23 | 2017-01-18 | 中国石油化工股份有限公司 | Quickly molded high density polyethylene composition and preparation method thereof |
| CN116728930B (en) * | 2023-06-21 | 2024-03-29 | 青岛泰博聚合标签有限公司 | High-transparency polyethylene heat-shrinkable film and preparation method thereof |
-
1990
- 1990-10-15 CN CN 90106289 patent/CN1027328C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055620A (en) | 1991-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU693784B2 (en) | Cable-sheathing composition | |
| CN106589578B (en) | High-performance jute fiber reinforced polypropylene composite material and preparation method thereof | |
| AU741335B2 (en) | An insulating composition for communication cables | |
| AU2005334397A1 (en) | Counter-rotating twin screw extruder | |
| CN102030963B (en) | Halogen-free fire-retardant thermoplastic elastomer material and preparation method thereof | |
| CN103589058A (en) | Reinforced polypropylene composite material and preparation method thereof | |
| CN112048124B (en) | Glass fiber reinforced polypropylene material with low-floating-fiber surface and preparation method thereof | |
| CN1027328C (en) | Production of insulating material for communication cables with high-density polythene | |
| CN114369267B (en) | Ternary composite film material and preparation method and application thereof | |
| CN110862684A (en) | POK/PPS composite material and preparation method thereof | |
| CN102382222A (en) | Low-density polyethylene (LDPE) resin for cable insulant having voltage level of above 110kV, and preparation method thereof | |
| CN1127539C (en) | PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof | |
| CN111393823B (en) | Gn-PET/PC alloy with excellent mechanical property and preparation method thereof | |
| CN103304886A (en) | Talcum powder master batch and preparation method thereof | |
| CN114573902A (en) | Polyethylene composition and preparation method thereof | |
| CN111072858A (en) | Polyethylene resin and preparation method thereof | |
| CN114456474B (en) | Thin-wall multilayer hollow blow molding material and preparation method thereof | |
| CN110305453B (en) | Shrinkage and warpage resistant PBT 3D printing wire and preparation method thereof | |
| CN115260751A (en) | Preparation method of extrusion-grade super-tough nylon | |
| CN115558204A (en) | Low-shrinkage high-gloss V0-grade halogen-free flame-retardant polypropylene composite material and preparation method thereof | |
| CN110204870B (en) | PTT 3D printing wire rod resistant to shrinkage and warping and preparation method thereof | |
| CN113831640A (en) | Heat-resistant composite material, preparation method and application thereof, and geomembrane | |
| CN108239322B (en) | High-hardness polyethylene cable material and preparation method thereof | |
| CN1075489A (en) | Special material for polyethylene fuel tank of automobile and preparation method thereof | |
| CN110240789B (en) | Shrinkage and warpage resistant PET 3D printing wire and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: China Petrochemical Corporation (SINOPEC) Document name: payment instructions |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: China Petrochemical Corporation (SINOPEC) Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |