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Preparation method of spherical polyvinylidene chloride resin with micropore structures

A technology of polyvinylidene chloride and microporous structure, which is applied in the field of preparation of spherical polyvinylidene chloride resin, can solve the problems of limited application range of spherical PVDC resin, poor performance and short service life of carbon molecular sieve products, and achieve good market prospects , good mechanical properties and long service life

Inactive Publication Date: 2014-04-30
JUHUA GROUP TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The spherical polyvinylidene chloride product prepared by the above patent and literature technology has small particles, no microporous structure, small specific surface area; poor mechanical strength and short service life. Product performance is poor
Therefore, the scope of use of the spherical PVDC resin produced by the above method is limited, and it cannot be used as an organic carrier for high value-added applications such as polymer adsorbents, carbon molecular sieves, resin carbon for hemoperfusion, and chromatographic materials.

Method used

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  • Preparation method of spherical polyvinylidene chloride resin with micropore structures
  • Preparation method of spherical polyvinylidene chloride resin with micropore structures
  • Preparation method of spherical polyvinylidene chloride resin with micropore structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of spherical polyvinylidene chloride resin with microporous structure, comprising the following steps:

[0025] (1) Preparation of water phase

[0026] Add 100kg of water and 1.5kg of gelatin as an organic dispersant to a 500L pressure reactor (stainless steel polymerization kettle with stirring device, length-to-diameter ratio of 2:1, three-leaf anchor paddle), and stir evenly to obtain an aqueous phase solution.

[0027] (2) Preparation of oil phase

[0028] Add the raw materials of the following composition into a 500L preparation kettle, stir evenly to obtain an oil phase solution;

[0029]

[0030] (3) Suspension polymerization reaction

[0031] Add the oil phase solution prepared in step (2) to the 500L pressure reactor equipped with the prepared water phase in step (1), react at 85°C for 15 hours, discharge the material after the reaction, and wash the microspheres with water until The water is clear, and the porogen is extracted after ...

Embodiment 2

[0033] A preparation method of spherical polyvinylidene chloride resin with microporous structure, comprising the following steps:

[0034] (1) Preparation of water phase

[0035] Add 100kg of water and 0.5kg of polyvinyl alcohol as an organic dispersant to a 500L pressure reactor (stainless steel polymerization kettle with stirring device, length-to-diameter ratio of 2:1, three-leaf anchor paddle), and stir evenly to obtain an aqueous phase solution.

[0036] (2) Preparation of oil phase

[0037] Add the raw materials of the following composition into a 500L preparation kettle, stir evenly to obtain an oil phase solution;

[0038]

[0039] (3) Suspension polymerization reaction

[0040] Add the oil phase solution prepared in step (2) to the 500L pressure reactor equipped with the prepared water phase in step (1), react at 70°C for 20 hours, discharge the material after the reaction, and wash the microspheres until The water is clear, and the porogen is extracted after d...

Embodiment 3

[0042] A preparation method of spherical polyvinylidene chloride resin with microporous structure, comprising the following steps:

[0043] (1) Preparation of water phase

[0044] Add 100kg of water and 2kg of hydroxymethylcellulose as an organic dispersant to a 500L pressure reactor (stainless steel polymerization kettle with stirring device, length-to-diameter ratio of 2:1, three-leaf anchor paddle), and stir evenly to obtain an aqueous phase solution .

[0045] (2) Preparation of oil phase

[0046] Add the raw materials of the following composition into a 500L preparation kettle, stir evenly to obtain an oil phase solution;

[0047]

[0048] (3) Suspension polymerization reaction

[0049]Add the oil phase solution prepared in step (2) to the 500L pressure reactor equipped with the prepared water phase in step (1), react at 100°C for 10 hours, discharge the material after the reaction, and wash the microspheres with water until The water is clear, and the porogen is e...

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Abstract

The invention discloses a preparation method of spherical polyvinylidene chloride resin with micropore structures. The preparation method comprises the following steps: (1) adding 100 parts of water and 0.5-2 parts of an organic dispersant in parts by weight into a reaction kettle, and uniformly stirring to obtain aqueous phase liquor; (2) uniformly stirring 100 parts of vinylidene chloride, 10-20 parts of a cross-linking agent, 0.5-2 parts of monounsaturated fatty acids, 0.5-2 parts of a peroxide initiator and 10-40 parts of a pore-foaming agent in parts by weight to obtain oil phase liquor; and (3) adding the oil phase liquor prepared in the step (2) into the reaction kettle filled with the prepared aqueous phase liquor in the step (1) in a weight ratio of (1.5-1.6):1, reacting for 10-20 hours at 70-100 DEG C, discharging after reaction, and water-washing, drying and separating the pore-foaming agent to obtain a spherical polyvinylidene chloride resin product with the micropore structures. The spherical polyvinylidene chloride resin with the micropore structures disclosed by the invention has the advantages of great grain size of the product prepared, high specific surface area, good mechanical property, long service life and the like.

Description

technical field [0001] The invention relates to a preparation method of polyvinylidene chloride resin, in particular to a preparation method of spherical polyvinylidene chloride resin with a microporous structure. Background technique [0002] Polyvinylidene chloride resin (PVDC) is a polymer material with high barrier properties, and its barrier properties are dozens or even hundreds of times that of ordinary packaging materials. It also has self-extinguishing properties, oil resistance and taste retention, and is also excellent in moisture resistance and mildew resistance. In particular, it has low-temperature heat sealing and heat shrinkability, and is easy to print, so it is one of the most popular plastics in the modern packaging industry. , Widely used in the packaging of food, medicine, precision instruments and various military supplies, known as "green" packaging materials. In addition, the latex made of this resin has good flame retardancy and adhesion, so it is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/08C08F222/38C08F220/64C08J9/26C08F2/20C08F4/34C08F6/24
Inventor 王金明
Owner JUHUA GROUP TECH CENT
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