CN103146082A - Irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and preparation method thereof - Google Patents
Irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and a preparation method thereof. The irradiation cross-linking EPDM insulating eraser comprises ingredients in parts by weight: 80-20 parts of EPDM A, 20-80 parts of EPDM B, 2-5 parts of sensitizer, 1-3 parts of anti-sticking agent, 1-3 parts of release agent, 1-3 parts of lubricating auxiliaries, 5-10 parts of active agent, 1-3 parts of antioxidant, 5-10 parts of plasticizer, 50-60 parts of reinforcing agent, and 50-70 parts of filling agent. According to the irradiation cross-linking EPDM insulating eraser and the preparation method thereof, by adopting a new sulfuration mode, namely irradiation cross-linking mode, the problems that the existing direct steam pipeline sulfuration mode causes the oxidation of a copper wire, water of a cable and surface pollution to the cable and the like can be thoroughly avoided.
Description
Technical field
The present invention relates to a kind of cable insulation rubber and preparation method thereof, particularly a kind of cross-linking radiation EPDM insulation rubber and preparation method thereof.
Background technology
Ethylene-propylene rubber has become widely used a kind of insulating material in electric wire.Terpolymer EP rubber as the base-material of ethylene-propylene rubber, is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon.Diolefine has special structure, only has the ability copolymerization of one of two keys, and undersaturated pair of key is mainly as the interlinkage place, and another undersaturated can become the avris chain.The main polymer chain of terpolymer EP rubber is fully saturated.This characteristic makes terpolymer EP rubber that excellent anti-weather, anti-ozone, heat-resisting, acid and alkali-resistance, water-fast steam, colour stability be arranged.Terpolymer EP rubber is non-polar in essence, and polar solvent and chemicals are had resistance, and water-intake rate is low, has excellent electrical insulation capability and corona resistance, and electrical property is better than or close to styrene-butadiene rubber(SBR), polyethylene and crosslinked polyethylene.
Cross-linking radiation is also referred to as physical crosslinking: with cooled insulated wire cores, evenly complete cross-linking process by the irradiation scanning window of high-energy electron accelerator.Do not add linking agent in the cross-linking radiation CABLE MATERIALS, effectively to penetrate insulation layer by the high-power electron beam that high-energy electron accelerator produces when crosslinked, produce crosslinking reaction by energy transformation, because electronics is with very high energy, and pass equably insulation layer, so the cross-link bond that forms is high in conjunction with energy, good stability.Cross-linking radiation is produced the voltage advantage of cable below 6KV, is best suited for preparation slim crosslinked.
Irradiation cross-linked wire and cable is widespread use at home, as overhead line, and mesolow feeder cable, all kinds of electric wirings etc.; Radiation cross-linked material has PE, EVA, PVC etc., and the mixture of all kinds of polyolefine materials.
Due to the distinctive softness of elastomeric material and blocking characteristics, and be subjected to the impact of traditional hot vulcanization process, the application of cross-linking radiation elastomeric material aspect rubber wire cable is not smooth, delays to change over to normal suitability for industrialized production.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency, a kind of cross-linking radiation EPDM insulation rubber and preparation method thereof is provided.
The technical scheme that realizes the object of the invention is: a kind of cross-linking radiation EPDM insulation rubber and preparation method thereof, and described EPDM insulation rubber adopts two kinds of different terpolymer EP rubbers; Composition and the proportioning of described EPDM insulation rubber are counted with mass parts:
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described sensitizing agent is triallyl cyanurate.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, the ethylene content of described terpolymer EP rubber A are that 55 %, ENB content are 4 %, and the mooney viscosity of test is 25 under 125 ℃; The ethylene content of terpolymer EP rubber B is that 71 %, ENB content are 0.5 %, and the mooney viscosity of test is 20 under 125 ℃.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described release agent are plastic, rubber elastomerics tailored version release agent TY-Z.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described release agent is DC-313.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described lubricating auxiliary agent is microcrystalline wax.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described strengthening agent is DC-70.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described softening agent is paraffin oil.
Above-mentioned cross-linking radiation EPDM insulation rubber and preparation method thereof, described oxidation inhibitor are four [methyl-β-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester.
The preparation method of above-mentioned cross-linking radiation EPDM insulation rubber, step 1: batching: composition and proportioning are counted with mass parts: 80～20 parts of terpolymer EP rubber A;
Sensitizing agent is triallyl cyanurate; The ethylene content of terpolymer EP rubber A is that 55 %, ENB content are 4 %, and the mooney viscosity of test is 25 under 125 ℃; The ethylene content of terpolymer EP rubber B is that 71 %, ENB content are 0.5 %, and the mooney viscosity of test is 20 under 125 ℃; Release agent is plastic, rubber elastomerics tailored version release agent TY-Z; Release agent is DC-313; Lubricating auxiliary agent is microcrystalline wax; Strengthening agent is DC-70; Softening agent is paraffin oil; Oxidation inhibitor is four [methyl-β-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester;
Step 2: batch mixing: weighting agent, terpolymer EP rubber, promoting agent, oxidation inhibitor, lubricating auxiliary agent, release agent, release agent, sensitizing agent, strengthening agent, softening agent are sequentially added into mixer mixing 2 ~ 3min successively; Tipping bucket cleaning, pressure floating weight continue mixing 7 ~ 8min, and the plastic emitting temperature is 110 ~ 120 ℃; Open bar after three times turning refining at least on bag tilting machine; At rubber strainer upward filtration glue, with each of 20 orders, 40 mesh filter screen;
Step 3: slice: after filter glue at compressing tablet in mill, draw thin-pass after clot grinds page on rolling press, final slice thickness 0.8 ~ 1.0mm;
Step 4: insulation unwrapping wire: extrude electric wire insulation layer on Rubber Extruder;
Step 5: cross-linking radiation: use the rumbatron cross-linking radiation.
After having adopted technique scheme, the present invention has following beneficial effect: the sulfuration of (1) rubber-like electric wire, because of the characteristics of the soft easy adhesion of elastomeric material matter, all adopt the mode of open steam pipeline sulfuration all the time, but because vapor temperature is high, easily make copper wire conductor oxidation blackout; Steam directly contacts with cable, easily causes the cable water inlet, affects the conductor performance, shortens the work-ing life of cable; Steam also easily makes cable be stained with and stains a little, is not suitable for the sulfuration of light-colour rubber goods.The present invention has adopted new vulcanization---the crosslinking method of irradiation, avoided the problems such as copper wire oxidation, cable water inlet and cable surface pollution fully.
(2) material free from extraneous odour: " India-rubber wire is smelly " is insoluble persistent ailment for a long time, and it is crosslinked that this rubber does not adopt superoxide DCP to come, and overcome stink and the peculiar smell of elastomeric material, almost accomplishes fully tasteless.
(3) not oxidation of copper conductor: the easy oxidation blackening of copper conductor after the India-rubber wire steam vulcanization is a large persistent ailment of traditional India-rubber wire; This rubber has overcome the problem of copper conductor oxidation, accomplishes that copper conductor is vivid as new after cross-linking radiation.
(4) wear resistance of wire products is good: compare with the chemicure product, the wear resistance of cross-linking radiation product is very excellent.
When (5) the cross-linking radiation rubber wire cable is produced, common problem has: electric wire adhesion problems, problem on deformation, scratch problem etc., electric wire is received in the work in-process on drum after extruding, be very easy to adhesion and crimp, this not only affects outward appearance, also can cause the core shift of electric wire, can cause when serious and scrap; Very soft because of India-rubber wire, the anti scuffing poor ability of pre-irradiation very easily produces scratch during irradiation.The present invention is by selecting plastic, rubber elastomerics tailored version release agent TY-Z, and it can directly add in polymkeric substance, has improved antiseized stripping result, has improved smooth degree, has reduced surface friction.Scratch problem when preferably resolving cross-linking radiation EPDM electric wire adhesion problems, problem on deformation and irradiation.
(6) excellent thermotolerance: the product temperature classification has the different gradess such as 90 ℃, 105 ℃, 125 ℃, can satisfy requirement and the customer requirement of the national and foreign standards of all these series products.
Embodiment
(embodiment 1)
Composition, the proportioning umber of the cross-linking radiation EPDM insulation rubber of the present embodiment see Table 1:
Table 1
Preparation in accordance with the following steps:
(1) batching: by formula accurate-metering, the various materials of weighing;
(2) mixing: that weighting agent, terpolymer EP rubber, promoting agent, oxidation inhibitor, lubricating auxiliary agent, release agent, release agent, sensitizing agent, strengthening agent, softening agent are sequentially added into mixer mixing 2 ~ 3min; Then tipping bucket cleaning, pressure floating weight continue mixing 7 ~ 8min, and the plastic emitting temperature is 110 ~ 120 ℃; Open bar after three times turning refining at least on bag tilting machine subsequently; At rubber strainer upward filtration glue, with each of 20 orders, 40 mesh filter screen;
(3) slice: after filter glue at compressing tablet in mill, draw thin-pass after clot; Then grind page on rolling press, final slice thickness 0.8 ~ 1.0mm;
(4) insulation unwrapping wire: extrude electric wire insulation layer on Rubber Extruder;
(5) cross-linking radiation: use the rumbatron cross-linking radiation.
Insulated wire cores 1.5 mm
2Key point for process see Table 2:
Table 2
| Project | Unit | Requirement |
| Cross-sectional area of conductor | mm 2 | 1.5 |
| Conductor structure | Total radical/diameter | 30/0.25 |
| Conductor diameter | mm | 1.6? |
| The insulation mean thickness | mm | 0.8 |
| The insulated wire cores external diameter | mm | 3.2? |
Irradiation technique is as follows: bundle lower roller 1700 types, select 100 road separated time combs, and advance two by two and go out mode irradiation, every group of 48 roads that wind the line are total to the 2*48 road, 2 roads, middle interval.Irradiation energy selects 1.4 MeV.The selection principle of separated time comb is exactly to utilize sweep length as far as possible, does not allow the bundle bar waste, and the length that would rather wind the line does not allow the length of restrainting bar greater than the length that winds the line greater than the length of bundle bar yet.The spacing of separated time comb should be able to allow the joint of line pass through smoothly, should be not stuck between comb, and owing on the separated time comb, lever being arranged, cable can run hurry up, unlikely job-hopping, beats and turns round.Be also noted that on the separated time comb and should avoid conductive line surfaces mill flower without burr, cut etc.
Insulated wire cores 1.5 mm
2After cross-linking radiation, the performance of EPDM insulation rubber sees Table 3:
Table 3
(embodiment 2)
Composition, the proportioning umber of the cross-linking radiation EPDM insulation rubber of the present embodiment see Table 4:
Table 4
Preparation process is referring to embodiment 1.
Insulated wire cores 1.5 mm
2Key point for process see Table 2:
Irradiation technique is referring to embodiment 1.
Insulated wire cores 1.5 mm
2After cross-linking radiation, the performance of EPDM insulation rubber sees Table 5:
Table 5
(embodiment 3)
Composition, the proportioning umber of the cross-linking radiation EPDM insulation rubber of the present embodiment see Table 6:
Table 6
Preparation process is referring to embodiment 1.
Insulated wire cores 1.5 mm
2Key point for process see Table 2:
Irradiation technique is referring to embodiment 1.
Insulated wire cores 1.5 mm
2After cross-linking radiation, the performance of EPDM insulation rubber sees Table 7:
Table 7
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a cross-linking radiation EPDM insulation rubber, is characterized in that: two kinds of different terpolymer EP rubbers of described EPDM insulation rubber employing; Composition and the proportioning of described EPDM insulation rubber are counted with mass parts:
2. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described sensitizing agent is triallyl cyanurate.
3. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: the ethylene content of described terpolymer EP rubber A is that 55 %, ENB content are 4 %, the mooney viscosity of test is 25 under 125 ℃; The ethylene content of terpolymer EP rubber B is that 71 %, ENB content are 0.5 %, and the mooney viscosity of test is 20 under 125 ℃.
4. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described release agent is plastic, rubber elastomerics tailored version release agent TY-Z.
5. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described release agent is DC-313.
6. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described lubricating auxiliary agent is microcrystalline wax.
7. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described strengthening agent is DC-70.
8. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described softening agent is paraffin oil.
9. a kind of cross-linking radiation EPDM insulation rubber according to claim 1, it is characterized in that: described oxidation inhibitor is four [methyl-β-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester.
10. the preparation method of a cross-linking radiation EPDM insulation rubber is characterized in that:
Step 1: batching: composition and proportioning are counted with mass parts:
Sensitizing agent is triallyl cyanurate; The ethylene content of terpolymer EP rubber A is that 55 %, ENB content are 4 %, and the mooney viscosity of test is 25 under 125 ℃; The ethylene content of terpolymer EP rubber B is that 71 %, ENB content are 0.5 %, and the mooney viscosity of test is 20 under 125 ℃; Release agent is plastic, rubber elastomerics tailored version release agent TY-Z; Release agent is DC-313; Lubricating auxiliary agent is microcrystalline wax; Strengthening agent is DC-70; Softening agent is paraffin oil; Oxidation inhibitor is four [methyl-β-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester;
Step 2: batch mixing: weighting agent, terpolymer EP rubber, promoting agent, oxidation inhibitor, lubricating auxiliary agent, release agent, release agent, sensitizing agent, strengthening agent, softening agent are sequentially added into mixer mixing 2 ~ 3min successively; Tipping bucket cleaning, pressure floating weight continue mixing 7 ~ 8min, and the plastic emitting temperature is 110 ~ 120 ℃; Open bar after three times turning refining at least on bag tilting machine; At rubber strainer upward filtration glue, with each of 20 orders, 40 mesh filter screen;
Step 3: slice: after filter glue at compressing tablet in mill, draw thin-pass after clot grinds page on rolling press, final slice thickness 0.8 ~ 1.0mm;
Step 4: insulation unwrapping wire: extrude electric wire insulation layer on Rubber Extruder;
Step 5: cross-linking radiation: use the rumbatron cross-linking radiation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319793A (en) * | 2013-07-15 | 2013-09-25 | 扬州华声电子实业有限公司 | Low-odor electro-insulating rubber for wires and cables and preparation method thereof |
| CN104893118A (en) * | 2015-05-27 | 2015-09-09 | 广东华声电器股份有限公司 | Irradiation-crosslinked insulation rubber and preparation method thereof |
| CN107033471A (en) * | 2017-04-18 | 2017-08-11 | 北京市射线应用研究中心 | A kind of ageing-resistant rubber material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899183A (en) * | 2010-09-02 | 2010-12-01 | 中国科学技术大学 | Radiation cross-linking waterproof flame retardant polyolefin nano-composite material and preparation method thereof |
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- 2013-03-18 CN CN2013100856440A patent/CN103146082A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899183A (en) * | 2010-09-02 | 2010-12-01 | 中国科学技术大学 | Radiation cross-linking waterproof flame retardant polyolefin nano-composite material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319793A (en) * | 2013-07-15 | 2013-09-25 | 扬州华声电子实业有限公司 | Low-odor electro-insulating rubber for wires and cables and preparation method thereof |
| CN103319793B (en) * | 2013-07-15 | 2015-09-16 | 扬州华声电子实业有限公司 | A kind of low smell electric wire electro-insulating rubber and preparation method thereof |
| CN104893118A (en) * | 2015-05-27 | 2015-09-09 | 广东华声电器股份有限公司 | Irradiation-crosslinked insulation rubber and preparation method thereof |
| CN107033471A (en) * | 2017-04-18 | 2017-08-11 | 北京市射线应用研究中心 | A kind of ageing-resistant rubber material and preparation method thereof |
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Address after: No. 8, Gaocheng Town, Yixing city of Jiangsu Province, Wuxi City, the Far East Avenue 214257 Applicant after: Far East Cable Co., Ltd. Applicant after: NEW FAR EAST CABLE CO., LTD. Applicant after: Yuandong Compound Techn Co., Ltd. Address before: No. 8, Gaocheng Town, Yixing city of Jiangsu Province, Wuxi City, the Far East Avenue 214257 Applicant before: Far East Cable Co., Ltd. Applicant before: New Far East Cable Co., Ltd. Applicant before: Yuandong Compound Techn Co., Ltd. |
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Application publication date: 20130612 |