CN102864631A - Preparation method of starch modified resin type water-blocking yarn - Google Patents
Preparation method of starch modified resin type water-blocking yarn Download PDFInfo
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- CN102864631A CN102864631A CN 201210320214 CN201210320214A CN102864631A CN 102864631 A CN102864631 A CN 102864631A CN 201210320214 CN201210320214 CN 201210320214 CN 201210320214 A CN201210320214 A CN 201210320214A CN 102864631 A CN102864631 A CN 102864631A
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Abstract
The invention discloses a preparation method of a starch modified resin type water-blocking yarn. The preparation method comprises the following steps: adding starch and maleic anhydride to a toluene solution in sequence, stirring, and heating to obtain a starch solution; mixing acrylic acid, an initiator and acetone uniformly, dropwisely adding to the starch solution, and reacting for one hour; adding a crosslinking agent, and reacting for two hours; then adding a sodium hydroxide solution, and reacting to obtain a powdery starch modified resin after aftertreatment; and dispersing the starch modified resin powder in water, coating the water solution on the two sides of a synthetic fiber filament, and drying to obtain the starch modified resin type water-blocking yarn. The preparation method has the following beneficial effects: the obtained starch modified resin type water-blocking yarn has high water absorbency and good tensile strength and heat stability, and can still ensure good water absorbency in a high temperature environment; and the method is simple in production process and low in production cost and has good market prospects.
Description
Technical field
The present invention relates to the power cable field, particularly relate to a kind of preparation method of starch conversion resin type water blocking yarn.
Background technology
Blocking water of power cable mainly is divided into radial water-resisting and longitudinal water-blocking two classes, the radial water-resisting of general power cable adopts mainly that outer protective polyethylene cover, protective metal shell or lead are moulded, plastic-aluminum combined vertical covering, and the longitudinal water-blocking of power cable is wanted the many of complexity, need to insert material water-proof material in the space of stranded conductor wire core.Mainly inserted in the space with petroleum jelly in the past, but exist degradation shortcoming under joint constructional difficulties, the electric conductivity and be eliminated, water blocking yarn becomes substitute products after waterproof paste, waterstop gradually as a kind of water blocking material, is that high water absorbency polymer is as the more recent application of material water-proof material in the power cable field.
The tradition water blocking yarn is by water-absorption fiber and polyster fibre blending, forms through the sliver arrangement.But traditional water blocking yarn temperature tolerance is bad, can not adapt to the high temperature production environment in the stranding manufacturing process, and tensile strength is low, and easily fracture causes production accident, and the longitudinal water-blocking effect is undesirable, can produce very large harm to the long-time stability of power cable transmission performance.
Summary of the invention
The technical problem that the present invention mainly solves provides that a kind of technique is simple, the preparation method of the starch conversion resin type water blocking yarn of extensive use.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of preparation method of starch conversion resin type water blocking yarn is provided, it is characterized in that, comprise that step is:
(1) successively starch and maleic anhydride are joined in the toluene solution fully dissolving and stirring, add hot reflux 2-4 hour after cooling obtain starch solution;
(2) acrylic acid, initator and acetone are mixed, be added drop-wise in the gained starch solution and reacted 1 hour, add crosslinking agent and reacted 2 hours, add again sodium hydroxide solution, after reaction finishes product washing, oven dry, pulverizing are obtained Powdered starch conversion resin;
(3) the starch conversion toner is dispersed in water, the aqueous solution is coated in the two sides of synthetic fiber filament, and drying obtains starch conversion resin type water blocking yarn.
In a preferred embodiment of the present invention, initator is benzoyl peroxide described in the step (2).
In a preferred embodiment of the present invention, crosslinking agent is the diethylene glycol dimethylacrylate described in the step (2).
The invention has the beneficial effects as follows: the preparation method of starch conversion resin type water blocking yarn of the present invention, gained starch conversion resin type water blocking yarn has preferably water absorption rate, the water absorption rate of deionized water is 320g/g, the water absorption rate of 0.9% sodium chloride solution is 85g/g, have very high water absorbent rate, good tensile strength and thermal stability, in hot environment, still can guarantee good water absorbent rate, high magnification water-absorbing resin and synthetic fiber filament are in conjunction with firm, the method production technology is simple, technical performance is stable, production cost is low, has good market prospects.
The specific embodiment
The below is described in detail preferred embodiment of the present invention, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
Embodiment one:
(1) successively 20kg starch and 8kg maleic anhydride are joined in the toluene solution fully dissolving and stirring, add hot reflux and cool off after 2 hours and obtain starch solution;
(2) 15g acrylic acid, 3kg benzoyl peroxide and acetone are mixed, be added drop-wise in the gained starch solution and reacted 1 hour, add 5kg diethylene glycol dimethylacrylate reaction 2 hours, add again the 12g sodium hydroxide solution, after reaction finishes product washing, oven dry, pulverizing are obtained Powdered starch conversion resin;
(3) the starch conversion toner is dispersed in water, the aqueous solution is coated in the two sides of synthetic fiber filament, and drying obtains starch conversion resin type water blocking yarn.
Embodiment two:
(1) successively 30kg starch and 12kg maleic anhydride are joined in the toluene solution fully dissolving and stirring, add hot reflux and cool off after 3 hours and obtain starch solution;
(2) 25g acrylic acid, 5kg benzoyl peroxide and acetone are mixed, be added drop-wise in the gained starch solution and reacted 1 hour, add 7kg diethylene glycol dimethylacrylate reaction 2 hours, add again the 21g sodium hydroxide solution, after reaction finishes product washing, oven dry, pulverizing are obtained Powdered starch conversion resin;
(3) the starch conversion toner is dispersed in water, the aqueous solution is coated in the two sides of synthetic fiber filament, and drying obtains starch conversion resin type water blocking yarn.
Embodiment three:
(1) successively 40kg starch and 16kg maleic anhydride are joined in the toluene solution fully dissolving and stirring, add hot reflux and cool off after 4 hours and obtain starch solution;
(2) 35g acrylic acid, 7kg benzoyl peroxide and acetone are mixed, be added drop-wise in the gained starch solution and reacted 1 hour, add 9kg diethylene glycol dimethylacrylate reaction 2 hours, add again the 29g sodium hydroxide solution, after reaction finishes product washing, oven dry, pulverizing are obtained Powdered starch conversion resin;
(3) the starch conversion toner is dispersed in water, the aqueous solution is coated in the two sides of synthetic fiber filament, and drying obtains starch conversion resin type water blocking yarn.
The preparation method of the starch conversion resin type water blocking yarn that the present invention discloses, the water absorption rate of gained starch conversion resin type water blocking yarn deionized water is 320g/g, the water absorption rate of 0.9% sodium chloride solution is 85g/g, have very high water absorbent rate, good tensile strength and thermal stability, in hot environment, still can guarantee good water absorbent rate, high magnification water-absorbing resin and synthetic fiber filament are in conjunction with firm, the method production technology is simple, technical performance is stable, production cost is low, has good market prospects.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (3)
1. the preparation method of a starch conversion resin type water blocking yarn is characterized in that, comprises that step is:
(1) successively starch and maleic anhydride are joined in the toluene solution fully dissolving and stirring, add hot reflux 2-4 hour after cooling obtain starch solution;
(2) acrylic acid, initator and acetone are mixed, be added drop-wise in the gained starch solution and reacted 1 hour, add crosslinking agent and reacted 2 hours, add again sodium hydroxide solution, after reaction finishes product washing, oven dry, pulverizing are obtained Powdered starch conversion resin;
(3) the starch conversion toner is dispersed in water, the aqueous solution is coated in the two sides of synthetic fiber filament, and drying obtains starch conversion resin type water blocking yarn.
2. the preparation method of starch conversion resin type water blocking yarn according to claim 1 is characterized in that, initator is benzoyl peroxide described in the step (2).
3. the preparation method of starch conversion resin type water blocking yarn according to claim 1 is characterized in that, crosslinking agent is the diethylene glycol dimethylacrylate described in the step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210320214 CN102864631A (en) | 2012-09-03 | 2012-09-03 | Preparation method of starch modified resin type water-blocking yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210320214 CN102864631A (en) | 2012-09-03 | 2012-09-03 | Preparation method of starch modified resin type water-blocking yarn |
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| CN102864631A true CN102864631A (en) | 2013-01-09 |
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| CN 201210320214 Pending CN102864631A (en) | 2012-09-03 | 2012-09-03 | Preparation method of starch modified resin type water-blocking yarn |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590271A (en) * | 2016-12-07 | 2017-04-26 | 温州任和文化创意有限责任公司 | Water-resistant material for brush-coating and filling cable |
| CN114702802A (en) * | 2022-04-25 | 2022-07-05 | 上海大觉包装制品有限公司 | Degradable cup cover and preparation method thereof |
-
2012
- 2012-09-03 CN CN 201210320214 patent/CN102864631A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590271A (en) * | 2016-12-07 | 2017-04-26 | 温州任和文化创意有限责任公司 | Water-resistant material for brush-coating and filling cable |
| CN114702802A (en) * | 2022-04-25 | 2022-07-05 | 上海大觉包装制品有限公司 | Degradable cup cover and preparation method thereof |
| CN114702802B (en) * | 2022-04-25 | 2024-02-27 | 上海大觉包装制品有限公司 | Degradable cup cover and preparation method thereof |
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Application publication date: 20130109 |