CN104947513A - Preparation method of fire-retardant high-voltage cable paper - Google Patents
Preparation method of fire-retardant high-voltage cable paper Download PDFInfo
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- CN104947513A CN104947513A CN201510310904.9A CN201510310904A CN104947513A CN 104947513 A CN104947513 A CN 104947513A CN 201510310904 A CN201510310904 A CN 201510310904A CN 104947513 A CN104947513 A CN 104947513A
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Abstract
The invention discloses a preparation method of fire-retardant high-voltage cable paper. The preparation method comprises the following steps: (1), preparing suspension liquid: preheating 30 to 40 weight parts of 20-30 wt% unbleached sulfate softwood pulp to 40 to 50 DEG C, adding10 to 20 weight parts of brominated epoxy resin, stirring for 10 to 20 min so as to form suspension liquid, and during stirring, rising the temperature to be 60 to 70 DEG C; (2), pulping; (3), papermaking: using a fourdrinier papermaking machine for papermaking; (4), after dewatering, enabling paper sheets to enter into a press-polishing machine for press polishing for standby application. The preparation method provided by the invention has the benefits as follows: the brominated epoxy resin with high flame retardance and bakelite powder with excellent insulativity are added into the raw materials of the cable paper, through specific processing, the cable paper which is excellent in flame retardance and high in insulativity and can be used for a cable with the power of 35 kilovolt or above can be obtained, the process is simple, and large-scale population and application can be achieved.
Description
Technical field
The present invention relates to the making field of cable paper.
Background technology
Cable paper is the paper with insulating property (properties), ash damage function also known as insulating paper.For a kind of insulating paper of high voltage power cable, control cables and signal cable.Be specifically designed to the use of electromagnetic wire factory, transformer factory, mutual inductance device factory, reactor factory.It is the insulating paper for power cable, control cables and the signal cable within 35 kilovolts.Wrap in cable outermost layer, in order to protect the insulating barrier of conductor wire core to seal, do not make moisture invade, also do not allow insulating barrier wreck.For roll web.Be quantitatively 45 ~ 175g/m2.Papery is tough and tensile, neat and well spaced.There are higher anti-tensile, folding and tearing strength.Not containing metal, the grains of sand and the acidic materials that can conduct electricity.Dielectric constant is high.Power factor is low.When standing insulating liquid process, having good stability of paper.Its kind divides according to different-thickness or color.Not float kp softwood pulp for raw material, after fast beating, not applying glue, does not add and fills out (material), fourdrinier machine is manufactured paper with pulp, and form through press polish.For the turn-to-turn insulation of electric wire or cable.The production standard of existing cable paper is only applicable to low-pressure field, if be applied in the high-tension cable of more than 35 kilovolts, the breakdown burning of possibility, exists potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is that existing cable paper is only applicable to lv power cable, and insulating properties is not high, and fire resistance is also bad, and safety coefficient is not high enough, provides a kind of preparation method of flame-retardant high-voltage cable paper for this reason.
Technical scheme of the present invention is: the preparation method of flame-retardant high-voltage cable paper, it comprises the following steps: (1), configuration suspension: the non-bleached sulphate softwood pulp of 30-40 weight portion 20-30wt% is preheated to 40-50 DEG C, the brominated epoxy resin adding 10-20 weight portion stirs 10-20min and forms suspension, is warming up to 60-70 DEG C during stirring; (2), making beating: 1/4-1/6 suspension being evaporated to original volume forms virgin pulp liquid, carries out fast beating to virgin pulp liquid, and the phenolic moulding powder adding 3-6 weight portion while making beating forms mixed serum; (3), manufacture paper with pulp: carry out copy paper with fourdrinier machine, mixed serum enters at online dehydration forming after the system of manufacturing paper with pulp, online concentration 0.3-0.5%, speed of a motor vehicle 50-60m/min, then forms page through vacuum draw, mechanical expression dehydration; (4) it is stand-by after the page, after dehydration enters calender press polish.
The invention has the beneficial effects as follows that the phenolic moulding powder that adds the high brominated epoxy resin of anti-flammability and good insulating in cable paper raw material obtains good flame resistance, the cable paper that can be used for more than 35 kilovolts power cables that insulating properties is high through specific PROCESS FOR TREATMENT, technique is simple, with low cost, can be in large-scale application.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1:(1), configuration suspension: the non-bleached sulphate softwood pulp of 30 weight portion 20wt% is preheated to 40 DEG C, add 10 weight portions brominated epoxy resin stir 10min formed suspension, be warming up to 60 DEG C during stirring; (2), making beating: suspension is evaporated to original volume 1/4 forms virgin pulp liquid, carries out fast beating to virgin pulp liquid, and the phenolic moulding powder adding 3 weight portions while making beating forms mixed serum; (3), manufacture paper with pulp: carry out copy paper with fourdrinier machine, mixed serum enters at online dehydration forming after the system of manufacturing paper with pulp, online concentration 0.3%, speed of a motor vehicle 50m/min, then forms page through vacuum draw, mechanical expression dehydration; (4) it is stand-by after the page, after dehydration enters calender press polish.
Embodiment 2:(1), configuration suspension: the non-bleached sulphate softwood pulp of 35 weight portion 25wt% is preheated to 45 DEG C, add 15 weight portions brominated epoxy resin stir 15min formed suspension, be warming up to 65 DEG C during stirring; (2), making beating: suspension is evaporated to original volume 1/5 forms virgin pulp liquid, carries out fast beating to virgin pulp liquid, and the phenolic moulding powder adding 5 weight portions while making beating forms mixed serum; (3), manufacture paper with pulp: carry out copy paper with fourdrinier machine, mixed serum enters at online dehydration forming after the system of manufacturing paper with pulp, online concentration 0.4%, speed of a motor vehicle 55m/min, then forms page through vacuum draw, mechanical expression dehydration; (4) it is stand-by after the page, after dehydration enters calender press polish.
Embodiment 3:(1), configuration suspension: the non-bleached sulphate softwood pulp of 40 weight portion 30wt% is preheated to 50 DEG C, add 20 weight portions brominated epoxy resin stir 20min formed suspension, be warming up to 70 DEG C during stirring; (2), making beating: suspension is evaporated to original volume 1/6 forms virgin pulp liquid, carries out fast beating to virgin pulp liquid, and the phenolic moulding powder adding 6 weight portions while making beating forms mixed serum; (3), manufacture paper with pulp: carry out copy paper with fourdrinier machine, mixed serum enters at online dehydration forming after the system of manufacturing paper with pulp, online concentration 0.5%, speed of a motor vehicle 60m/min, then forms page through vacuum draw, mechanical expression dehydration; (4) it is stand-by after the page, after dehydration enters calender press polish.
The present invention adopts the non-bleached sulphate softwood pulp of low concentration to be for the ease of forming suspension with brominated epoxy resin, if concentration is too high can form slurries more than 30wt%, if concentration is too lower than 20wt%, non-bleached sulphate softwood pulp meeting and brominated epoxy resin layering, all be unfavorable for the formation of follow-up virgin pulp liquid, the component that phenolic moulding powder adds also needs strict control, too much more than 6 weight portions, too lower than 3 weight portions, can not can not all be unfavorable for the insulating properties improving cable paper.
Claims (1)
1. the preparation method of flame-retardant high-voltage cable paper, it is characterized in that it comprises the following steps: (1), configuration suspension: the non-bleached sulphate softwood pulp of 30-40 weight portion 20-30wt% is preheated to 40-50 DEG C, the brominated epoxy resin adding 10-20 weight portion stirs 10-20min and forms suspension, is warming up to 60-70 DEG C during stirring; (2), making beating: 1/4-1/6 suspension being evaporated to original volume forms virgin pulp liquid, carries out fast beating to virgin pulp liquid, and the phenolic moulding powder adding 3-6 weight portion while making beating forms mixed serum; (3), manufacture paper with pulp: carry out copy paper with fourdrinier machine, mixed serum enters at online dehydration forming after the system of manufacturing paper with pulp, online concentration 0.3-0.5%, speed of a motor vehicle 50-60m/min, then forms page through vacuum draw, mechanical expression dehydration; (4) it is stand-by after the page, after dehydration enters calender press polish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510310904.9A CN104947513A (en) | 2015-06-09 | 2015-06-09 | Preparation method of fire-retardant high-voltage cable paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510310904.9A CN104947513A (en) | 2015-06-09 | 2015-06-09 | Preparation method of fire-retardant high-voltage cable paper |
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| CN104947513A true CN104947513A (en) | 2015-09-30 |
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| CN201510310904.9A Pending CN104947513A (en) | 2015-06-09 | 2015-06-09 | Preparation method of fire-retardant high-voltage cable paper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755889A (en) * | 2016-04-01 | 2016-07-13 | 苏州市鼎立包装有限公司 | Preparation method of flame-retardant kraft paper |
| CN108735403A (en) * | 2018-05-25 | 2018-11-02 | 南京林业大学 | High-tension cable paper and its production method with high insulating property and tightness |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088701A (en) * | 2012-04-13 | 2013-05-08 | 广东省造纸研究所 | Flame-retardant insulation vulcanized fiber board and manufacturing technique thereof |
| CN103437251A (en) * | 2013-07-19 | 2013-12-11 | 泰州新源电工器材有限公司 | Production method of transformer bushing insulation paper |
| CN103806325A (en) * | 2014-01-20 | 2014-05-21 | 清华大学 | Preparation method for transformer insulation paper and system thereof for laboratory |
| CN104334797A (en) * | 2012-04-27 | 2015-02-04 | 帕孔有限两合公司 | Electrical insulating paper |
-
2015
- 2015-06-09 CN CN201510310904.9A patent/CN104947513A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088701A (en) * | 2012-04-13 | 2013-05-08 | 广东省造纸研究所 | Flame-retardant insulation vulcanized fiber board and manufacturing technique thereof |
| CN104334797A (en) * | 2012-04-27 | 2015-02-04 | 帕孔有限两合公司 | Electrical insulating paper |
| CN103437251A (en) * | 2013-07-19 | 2013-12-11 | 泰州新源电工器材有限公司 | Production method of transformer bushing insulation paper |
| CN103806325A (en) * | 2014-01-20 | 2014-05-21 | 清华大学 | Preparation method for transformer insulation paper and system thereof for laboratory |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755889A (en) * | 2016-04-01 | 2016-07-13 | 苏州市鼎立包装有限公司 | Preparation method of flame-retardant kraft paper |
| CN108735403A (en) * | 2018-05-25 | 2018-11-02 | 南京林业大学 | High-tension cable paper and its production method with high insulating property and tightness |
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Application publication date: 20150930 |
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| RJ01 | Rejection of invention patent application after publication |