CN105440215A - A preparing process of a silane crosslinked polyethylene cable material - Google Patents
A preparing process of a silane crosslinked polyethylene cable material Download PDFInfo
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- CN105440215A CN105440215A CN201410420299.6A CN201410420299A CN105440215A CN 105440215 A CN105440215 A CN 105440215A CN 201410420299 A CN201410420299 A CN 201410420299A CN 105440215 A CN105440215 A CN 105440215A
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Abstract
The invention discloses a preparing process of a silane crosslinked polyethylene cable material, and relates to the technical field of chemical engineering. The preparing process includes a step of preparing an A material and a step of extrusion molding. Vinyltrimethoxysilane with high quality is adopted as a silane grafting liquid in the process, so that the gelling rate is high, energy consumption is low, processability is good, a phenomenon of broken bars is not liable to occur in processing processes, and product quality is improved. The vinyltrimethoxysilane is an ideal grafting liquid. Dicumyl peroxide is adopted as an initiator for the A material in preparation, thus increasing the reaction rate and the reaction degree and reducing the cost of raw materials and the cost of energy. By adopting organotin as a catalyst in the extrusion molding step, the reaction rate is greatly increased, a production period is shortened, and automatic large-scale production can be achieved easily. By optimizing a raw material ratio in a whole preparation process, performances of the produced cable material reach or even exceed standard requirements of cable materials. The process is simple and easy to master.
Description
Technical field
The present invention relates to chemical technology field, be specifically related to a kind of preparation technology of organosilane cross-linked poly-ethylene cable material.
Background technology
Along with the development of modern science and technology, the specification of quality of people to electric wire is more and more higher, common polyvinyl chloride power cable due to Long-term service temperature low, thermal lifetime is short, short circuit overcurrent is little, be subject to increasing restriction in use, the appearance of crosslinked polyethylene, compensate for the deficiency of polyvinyl chloride electrical wire and cable, be used widely, adopt organosilane crosslinked polyethylene insulation, cable allows Long-term service temperature to be 90 DEG C, the working temperature that during overload, short circuit allows is 135 DEG C, temperature during short circuit can reach 250 DEG C (time is 5s), the heat life of crosslinked polyethylene can reach 40a in addition, as can be seen here, twisted polyethylene cable can improve the transmission capacity of circuit, overload capacity, and the work-ing life of cable can be extended, meet the requirement of modern project, therefore, develop a kind of excellent performance, matter measured twisted polyethylene cable material replaces common cable material to become trend of the times.
Summary of the invention
It is simple that problem to be solved by this invention is to provide a kind of production technique, and lens materials safety is comfortable, the preparation method of the high-hydrophilic Tinted contact lenses material that colour fastness is high.
To achieve these goals, the technical scheme that the present invention takes for: the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material provided, comprises following processing step:
(1) A material preparation: polyethylene, Silane Grafted liquid and initiator are mixed and put into twin screw extruder and carries out graft reaction, the first paragraph temperature controlling fuselage is 90 ~ 100 DEG C, second segment temperature is 110 ~ 130 DEG C, 3rd section of temperature is 140 ~ 160 DEG C, head temperature is 180 ~ 220 DEG C, and obtained Silane Grafted material A expects;
(2) extrusion moulding: A obtained in step (1) material is expected to mix with the catalyst masterbatch B prepared in advance, in twin screw extruder, carry out graft reaction can obtain cross-linked poly-ethylene cable material, the first paragraph temperature controlling fuselage is 90 ~ 100 DEG C, second segment temperature is 110 ~ 130 DEG C, 3rd section of temperature is 140 ~ 160 DEG C, and head temperature is 180 ~ 220 DEG C.
Preferably, in described step (1), in polyethylene used, Silane Grafted liquid and initiator mixed solution, the massfraction of each composition is respectively 99.44 ~ 99.7%, 0.10 ~ 0.16% and 0.2 ~ 0.4%.
Preferably, in described step (1), Silane Grafted liquid used is vinyltrimethoxy silane.
Preferably, in described step (1), initiator used is dicumyl peroxide.
Preferably, in described step (2), catalyst masterbatch used comprises polyethylene and catalyzer, and wherein catalyzer is organotin.
Preferably, in described catalyst masterbatch B, the massfraction of polyethylene and catalyzer is respectively 99.997 ~ 99.999% and 0.001 ~ 0.003%.
Preferably, in described step (2), the mixing of polyethylene, Silane Grafted liquid and initiator is the mixing using high-speed mixer to carry out material.
Adopt technical scheme of the present invention, by selecting the vinyltrimethoxy silane of high-quality as Silane Grafted liquid in this process of preparing, gel fraction is high, energy consumption is low, processing characteristics is excellent, not easily occur in the course of processing that disconnected bar phenomenon is desirable grafting liquid, improve the quality of product, adopt dicumyl peroxide as the initiator of A material preparation in preparation process, improve speed of reaction and level of response, raw materials cost and energy cost are saved, in extrusion moulding process, by adopting organotin as catalyzer, drastically increase the speed of reaction, shorten the production cycle, easily realize automatic mass production, and by optimizing the proportioning of each raw material in whole preparation process, the CABLE MATERIALS properties produced all is reached, even exceed the standard-required of CABLE MATERIALS, preparation technology is simple, easy grasp.
Embodiment
embodiment 1:
(1) A material preparation: carry out graft reaction by putting into twin screw extruder after mixing in polyethylene, vinyltrimethoxy silane and dicumyl peroxide feeding high-speed mixer, wherein, in polyethylene used, Silane Grafted liquid and initiator mixed solution, the massfraction of each composition is respectively 99.7%, 0.10% and 0.2%, the first paragraph temperature controlling fuselage is 92 DEG C, second segment temperature is 112 DEG C, 3rd section of temperature is 142 DEG C, and head temperature is 188 DEG C, and obtained Silane Grafted material A expects;
(2) extrusion moulding: A obtained in step (1) material is mixed with the compound of the polyethylene prepared in advance and organotin, in twin screw extruder, carry out graft reaction can obtain cross-linked poly-ethylene cable material, wherein, the massfraction of polyethylene used and catalyzer is respectively 99.999% and 0.001%, the first paragraph temperature controlling fuselage is 90 DEG C, second segment temperature is 110 DEG C, and the 3rd section of temperature is 140 DEG C, and head temperature is 180 DEG C.
embodiment 2:all the other are identical with embodiment 1, difference is in described step (1), in described polyethylene, Silane Grafted liquid and initiator mixed solution, the massfraction of each composition is respectively 99.63%, 0.12% and 0.25%, the first paragraph temperature controlling fuselage is 93 DEG C, second segment temperature is 113 DEG C, 3rd section of temperature is 144 DEG C, and head temperature is 190 DEG C; In described step (2), the massfraction of polyethylene used and catalyzer is respectively 99.998% and 0.002%, and the first paragraph temperature controlling fuselage is 91 DEG C, and second segment temperature is 112 DEG C, and the 3rd section of temperature is 141 DEG C, and head temperature is 185 DEG C.
embodiment 3:all the other are identical with embodiment 1, difference is in described step (1), in described polyethylene, Silane Grafted liquid and initiator mixed solution, the massfraction of each composition is respectively 99.63%, 0.15% and 0.30%, the first paragraph temperature controlling fuselage is 100 DEG C, second segment temperature is 120 DEG C, 3rd section of temperature is 150 DEG C, and head temperature is 201 DEG C; In described step (2), the massfraction of polyethylene used and catalyzer is respectively 99.997% and 0.003%, and the first paragraph temperature controlling fuselage is 101 DEG C, and second segment temperature is 115 DEG C, and the 3rd section of temperature is 148 DEG C, and head temperature is 212 DEG C of h.
embodiment 4:all the other are identical with embodiment 1, difference is in described step (1), in described polyethylene, Silane Grafted liquid and initiator mixed solution, the massfraction of each composition is respectively 99.52%, 0.16% and 0.32%, the first paragraph temperature controlling fuselage is 101 DEG C, second segment temperature is 122 DEG C, 3rd section of temperature is 153 DEG C, and head temperature is 205 DEG C; In described step (2), the massfraction of polyethylene used and catalyzer is respectively 99.998% and 0.002%, and the first paragraph temperature controlling fuselage is 106 DEG C, and second segment temperature is 118 DEG C, and the 3rd section of temperature is 149 DEG C, and head temperature is 218 DEG C of h.
After above processing step, take out CABLE MATERIALS sample, to be measured:
From above data, the CABLE MATERIALS sample extension intensity produced is at more than 16MPa, and tensile strength is high, and tensile strength velocity of variation is little, about 7%, elongation at break is high, is not easily pulled off, and specific inductivity is about 2.1%, not easy conductive, and preparation technology is simple, preparation speed is high, easily realizes scale operation.
Obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (7)
1. a preparation technology for organosilane cross-linked poly-ethylene cable material, comprises following processing step:
(1) A material preparation: polyethylene, Silane Grafted liquid and initiator are mixed and put into twin screw extruder and carries out graft reaction, the first paragraph temperature controlling fuselage is 90 ~ 100 DEG C, second segment temperature is 110 ~ 130 DEG C, 3rd section of temperature is 140 ~ 160 DEG C, head temperature is 180 ~ 220 DEG C, and obtained Silane Grafted material A expects;
(2) extrusion moulding: A obtained in step (1) material is expected to mix with the catalyst masterbatch B prepared in advance, in twin screw extruder, carry out graft reaction can obtain cross-linked poly-ethylene cable material, the first paragraph temperature controlling fuselage is 90 ~ 100 DEG C, second segment temperature is 110 ~ 130 DEG C, 3rd section of temperature is 140 ~ 160 DEG C, and head temperature is 180 ~ 220 DEG C.
2. the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material according to claim 1, is characterized in that: in described step (1), in polyethylene used, Silane Grafted liquid and initiator mixed solution, the massfraction of each composition is respectively 99.44 ~ 99.7%, 0.10 ~ 0.16% and 0.2 ~ 0.4%.
3. the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material according to claim 1, is characterized in that: Silane Grafted liquid used in described step (1) is vinyltrimethoxy silane.
4. the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material according to claim 1, is characterized in that: initiator used in described step (1) is dicumyl peroxide.
5. the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material according to claim 1, is characterized in that: in described step (2), catalyst masterbatch used comprises polyethylene and catalyzer, and wherein catalyzer is organotin.
6. the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material according to claim 5, is characterized in that: in described catalyst masterbatch B, the massfraction of polyethylene and catalyzer is respectively 99.997 ~ 99.999% and 0.001 ~ 0.003%.
7. the preparation technology of a kind of organosilane cross-linked poly-ethylene cable material according to claim 1, is characterized in that: in described step (2), the mixing of polyethylene, Silane Grafted liquid and initiator is the mixing using high-speed mixer to carry out material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410420299.6A CN105440215A (en) | 2014-08-25 | 2014-08-25 | A preparing process of a silane crosslinked polyethylene cable material |
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| CN201410420299.6A CN105440215A (en) | 2014-08-25 | 2014-08-25 | A preparing process of a silane crosslinked polyethylene cable material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829901A (en) * | 2015-04-10 | 2015-08-12 | 中山市鸿程科研技术服务有限公司 | Cable material preparation technology |
| CN106220969A (en) * | 2016-08-27 | 2016-12-14 | 潍坊市宏源防水材料有限公司 | A kind of silane cross-linked polyolefin waterproof roll and preparation technology thereof |
| CN107674155A (en) * | 2017-11-13 | 2018-02-09 | 苏州亨利通信材料有限公司 | A kind of method that two step method prepares organosilane crosslinked polyethylene |
| CN110330594A (en) * | 2019-07-04 | 2019-10-15 | 四川轻化工大学 | A kind of method that polyethylene crosslinking is modified |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000055225A1 (en) * | 1999-03-18 | 2000-09-21 | Nextrom Holding S.A. | Process for producing a cross-linked polymer product |
| US20020183412A1 (en) * | 1999-11-24 | 2002-12-05 | Maillefer S.A.. | Silane crosslinking process |
| CN102532664A (en) * | 2011-12-31 | 2012-07-04 | 上海至正道化高分子材料有限公司 | Silane cross-linked polyethylene insulating material and production method thereof |
| CN102964657A (en) * | 2012-09-25 | 2013-03-13 | 东莞市佳普电线塑胶有限公司 | Silane cross-linked polyethylene cable material |
-
2014
- 2014-08-25 CN CN201410420299.6A patent/CN105440215A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000055225A1 (en) * | 1999-03-18 | 2000-09-21 | Nextrom Holding S.A. | Process for producing a cross-linked polymer product |
| US20020183412A1 (en) * | 1999-11-24 | 2002-12-05 | Maillefer S.A.. | Silane crosslinking process |
| CN102532664A (en) * | 2011-12-31 | 2012-07-04 | 上海至正道化高分子材料有限公司 | Silane cross-linked polyethylene insulating material and production method thereof |
| CN102964657A (en) * | 2012-09-25 | 2013-03-13 | 东莞市佳普电线塑胶有限公司 | Silane cross-linked polyethylene cable material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829901A (en) * | 2015-04-10 | 2015-08-12 | 中山市鸿程科研技术服务有限公司 | Cable material preparation technology |
| CN106220969A (en) * | 2016-08-27 | 2016-12-14 | 潍坊市宏源防水材料有限公司 | A kind of silane cross-linked polyolefin waterproof roll and preparation technology thereof |
| CN107674155A (en) * | 2017-11-13 | 2018-02-09 | 苏州亨利通信材料有限公司 | A kind of method that two step method prepares organosilane crosslinked polyethylene |
| CN110330594A (en) * | 2019-07-04 | 2019-10-15 | 四川轻化工大学 | A kind of method that polyethylene crosslinking is modified |
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Application publication date: 20160330 |