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Carbon molecular sieve PVDC composition

A carbon molecular sieve and composition technology, applied in the field of PVDC compositions for carbon molecular sieves, can solve problems such as being unsuitable for PVDC carbon molecular sieves, limiting the application field of PVDC compositions, small apparent density and micropore volume of PVDC compositions, and the like, To achieve the effect of excellent product performance

Inactive Publication Date: 2015-12-09
HUZHOU XINAOLI ADSORPTION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the apparent density and pore volume of the prepared PVDC composition are small, and it is not suitable for making PVDC carbon molecular sieves for gas adsorption, which limits the application fields of PVDC compositions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation steps are as follows:

[0051] (1) Prepare the reaction raw materials for subsequent use, and the reaction raw materials are composed of: 70 parts of vinylidene chloride monomers; 5 parts of comonomers; 7 parts of dispersants; 10 parts of initiators; 3 parts of pH buffer regulators; 5 parts of nano fillers ;

[0052] (2) Preparation of pH buffer regulator aqueous solution and dispersant aqueous solution: Sodium pyrophosphate 1.6kg and disodium hydrogen phosphate 0.4kg, deionized water 20kg are mixed with pH buffer regulator aqueous solution; Methyl cellulose ether 2.5kg, deionized 375kg of ionized water is prepared into aqueous solution of dispersant;

[0053] (3) Preparation of nanofiller aqueous solution: 1.8kg of nano silicon dioxide and 88.2kg of deionized water are prepared into nanofiller aqueous solution;

[0054] (4) Add 257.3 kg of deionized water and pH buffer regulator aqueous solution to a 3M3 polymerization kettle (stainless steel polymeri...

Embodiment 2

[0057] The preparation steps are as follows:

[0058] (1) Prepare the reaction raw materials for subsequent use, and the reaction raw materials are composed of: 75 parts of vinylidene chloride monomers; 10 parts of comonomers; 2 parts of dispersants; 3 parts of initiators; 5 parts of pH buffer regulators; 5 parts of nano fillers ;

[0059] (2) Preparation of pH buffer regulator aqueous solution and dispersant aqueous solution: Sodium pyrophosphate 1.6kg and disodium hydrogen phosphate 0.4kg, deionized water 20kg are mixed with pH buffer regulator aqueous solution; Methyl cellulose ether 2.5kg, deionized 375kg of ionized water is prepared into aqueous solution of dispersant;

[0060] (3) Preparation of nanofiller aqueous solution: 1.8kg of nano silicon dioxide and 88.2kg of deionized water are prepared into nanofiller aqueous solution;

[0061] (4) Add 257.3 kg of deionized water and pH buffer regulator aqueous solution to a 3M3 polymerization kettle (stainless steel polymeri...

Embodiment 3

[0064] The preparation steps are as follows:

[0065] (1) Prepare the reaction raw materials for subsequent use, and the reaction raw materials are composed of: 80 parts of vinylidene chloride monomer; 6 parts of comonomer; 4 parts of dispersant; 8 parts of initiator; 1 part of pH buffer regulator; ;

[0066] (2) Preparation of pH buffer regulator aqueous solution and dispersant aqueous solution: Sodium pyrophosphate 1.6kg and disodium hydrogen phosphate 0.4kg, deionized water 20kg are mixed with pH buffer regulator aqueous solution; Methyl cellulose ether 2.5kg, deionized 375kg of ionized water is prepared into aqueous solution of dispersant;

[0067] (3) Preparation of nanofiller aqueous solution: 1.8kg of nano silicon dioxide and 88.2kg of deionized water are prepared into nanofiller aqueous solution;

[0068] (4) Add 257.3 kg of deionized water and pH buffer regulator aqueous solution to a 3M3 polymerization kettle (stainless steel polymerization kettle with stirring dev...

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PUM

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Abstract

The present invention relates to a carbon molecular sieve PVDC composition comprising the following components by weight: 70 to 80 parts of a vinylidene chloride monomer; 5 to 10 parts of comonomer; 2 to 7 parts of a dispersant; 3 ~ 10 parts of an initiator; 1 to 5 parts of a pH buffer adjusting agent; and 1 to 5 parts of a nano filler. The melting point, apparent density, volatile matter, three-target product concentration ratio and other indicators of the PVDC composition can be improved by optimizing of polymerization formulation, the carbon molecular sieve PVDC composition is particularly suitable for production of a carbon molecular sieve used in gas adsorption storage and normal temperature low-pressure separation preparation of a high purity gas.

Description

technical field [0001] The invention relates to the technical field of carbon molecular sieves, and more specifically relates to a PVDC composition for carbon molecular sieves. Background technique [0002] Polyvinylidene chloride (PVDC) is a homopolymer of vinylidene chloride (VDC) or a polymer formed by copolymerization of vinylidene chloride as the main component and other monomers. Due to the symmetrical structure of the molecular chain and the presence of hydrophobic base chlorine, PVDC has high crystallinity and melting point, good water and oxygen barrier properties, and the gas barrier property is not affected by ambient humidity. It is widely used in chemical industry, light Industry, packaging, food and other fields. [0003] PVDC with large apparent density and micropore volume, high melting point, low volatile matter content, and high three-mesh concentration rate produces porous non-graphitizable carbon with a highly cross-linked structure through high-pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/08C08F214/06C08F220/14C08F220/44C08F2/44C08K3/36
Inventor 吴金星吴桂星
Owner HUZHOU XINAOLI ADSORPTION MATERIALS
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