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A kind of hydrophilic polypropylene and preparation method thereof

A polypropylene and hydrophilic technology, which is applied in the field of polypropylene and its preparation, can solve the problems of inability to re-melt and shape, inability to prepare hydrophilic polypropylene pellets, poor durability, etc.

Active Publication Date: 2018-12-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hydrophilic polypropylene product blended with a hydrophilic agent has good hydrophilicity, its durability is not good, and the hydrophilicity will decrease rapidly with the extraction of the hydrophilic agent during use.
On the other hand, the use of surface-grafted hydrophilic polypropylene to improve the surface only has good hydrophilicity on the surface, and the product can only be modified on the molded product, and the modified product cannot be re-melted and molded, nor can it be Preparation of hydrophilic polypropylene pellets

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 10 parts of deionized water to 100 parts of polybutadiene latex, then add 1 part of sodium dodecylbenzenesulfonate as a stabilizer, stir evenly, place in a three-necked flask, and keep the temperature at 60 ° C; The initiator cumene hydroperoxide is added to 30 parts of butyl acrylate, after mixing evenly, it is slowly added dropwise into a three-necked flask, and the dropping time is controlled within 1 to 2 hours. After the dropwise addition, the temperature was raised to 80° C., and the reaction was carried out for 2 hours to obtain a grafted product.

[0035] Add dilute hydrochloric acid to the grafted product until the pH is 1, keep it warm for 2 hours, and discharge to obtain a hydrolyzed product.

[0036] Take 200 parts of water, add 2 parts of magnesium sulfate to it and mix evenly, and control the temperature at 60°C, take 50 parts of the aforementioned hydrolyzate, slowly pour it into the prepared magnesium sulfate solution, keep stirring for 1 hour, filte...

Embodiment 2

[0043] Add 10 parts of deionized water to 100 parts of polybutadiene latex, then add 1 part of sodium dodecylbenzenesulfonate as a stabilizer, stir evenly, place in a three-necked flask, and keep the temperature at 60 ° C; The initiator cumene hydroperoxide is added to 10 parts of methyl acrylate, after mixing evenly, it is slowly added dropwise into a three-necked flask, and the dropping time is controlled within 1 to 2 hours. After the dropwise addition, the temperature was raised to 80° C., and the reaction was carried out for 2 hours to obtain a grafted product.

[0044] Add dilute hydrochloric acid to the grafted product until the pH is 1, keep it warm for 2 hours, and discharge to obtain a hydrolyzed product.

[0045] Take 200 parts of water, add 2 parts of magnesium sulfate to it and mix evenly, and control the temperature at 60°C. Take 13 parts of the aforementioned hydrolyzate, slowly pour it into the prepared magnesium sulfate solution, keep stirring for 1 hour, filt...

Embodiment 3

[0052] Add 10 parts of deionized water to 100 parts of polybutadiene latex, and then add 1 part of sodium dodecylbenzenesulfonate as a stabilizer, stir evenly, place in a three-necked flask, and keep the temperature at 60°C. Add 0.01 part of initiator cumene hydroperoxide to 26 parts of methyl acrylate, mix well, then slowly drop into a three-necked flask, and control the dropping time within 1 to 2 hours. After the dropwise addition, the temperature was raised to 78° C., and the reaction was carried out for 3 hours to obtain a grafted product.

[0053] Add dilute hydrochloric acid to the grafted product until the pH of the system is 1, keep it warm for 3 hours, and discharge to obtain a hydrolyzed product.

[0054] Take 200 parts of water, add 2 parts of magnesium sulfate to it and mix evenly, and control the temperature at 60°C. Take 13 parts of the aforementioned hydrolyzate, slowly pour it into the prepared magnesium sulfate solution, keep stirring for 1 hour, filter, and ...

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PUM

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Abstract

The invention discloses hydrophilic polypropylene and a preparing method thereof. The preparing method includes the steps that alkyl acrylate is grafted on polybutadiene latex with the emulsion method, then the grafted product is hydrolyzed under the acidic condition, the hydrophilic grafted substance obtained through condensation is jointly mixed with polypropylene in an extruding machine, the product is extruded and prilled, and the hydrophilic polypropylene is obtained. By means of the hydrophilic polypropylene and the preparing method thereof, the hydrophily of the extrusion product is good.

Description

technical field [0001] The invention relates to a polypropylene that can be used for spinning or other hydrophilic requirements and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Polypropylene is a general-purpose plastic with excellent performance, but its poor hydrophilicity limits its further application. Therefore, the improvement of its hydrophilicity is an important direction of polypropylene modification research. Feng Shaohua and others have studied that the addition of cetylpyridinium bromide reduces the hydrophilic angle of polypropylene, but the addition of small molecule hydrophilic agents makes the hydrophilic life of polypropylene shorter. The water quality has dropped significantly. [0003] CN201210547724 provides a polypropylene-hydrophilic monomer copolymer and a preparation method thereof. The copolymer is prepared by a solvent-free internal mixer solid-phase synthesis method. During the preparat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L51/00C08F279/02
Inventor 吴宇杨珊珊樊洁赵洪国何连成李波胡海华宋中勤孟令坤李新元
Owner PETROCHINA CO LTD