A kind of preparation method of PVDC composition

A composition and dispersant technology, applied in the field of PVDC composition preparation, can solve the problems of film water vapor, poor oxygen barrier properties, complicated production process, long polymerization time, etc., and achieve good transparency, stable polymerization process, and film surface Uniform and crystal-free effect

Active Publication Date: 2016-03-16
ZHEJIANG QUZHOU JUSU CHEM IND CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the production process is complicated, and the water vapor and oxygen barrier properties of the obtained film are poor
The disadvantage is that the production process is complex and the polymerization time is long

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of PVDC composition
  • A kind of preparation method of PVDC composition
  • A kind of preparation method of PVDC composition

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] A preparation method of a PVDC composition, comprising the following steps:

[0027] (1) Prepare the reaction raw materials for subsequent use, and the reaction raw materials consist of:

[0028] Deionized water 1274kg

[0029] PH value buffer regulator: sodium pyrophosphate 1kg

[0030] Dispersant: methyl cellulose ether 1.5kg

[0031] VDC single unit 744kg

[0032] MA monomer 56kg

[0033] Initiator: tert-butyl peroxide-2-ethylhexanoate 3.5kg

[0034] (2) Preparation of pH value buffer regulator aqueous solution and dispersant aqueous solution: 1 kg of sodium pyrophosphate and 10 kg of deionized water are formulated into pH value buffer regulator aqueous solution; 1.5 kg of methyl cellulose ether and 260 kg of deionized water are formulated into dispersant aqueous solution;

[0035] (3) Preparation of mixed monomer: mix 744kg VDC monomer and 56kgMA monomer evenly to prepare mixed monomer;

[0036] (4) Add 700kg deionized water and 11kg pH value buffer regulator...

example 2

[0040] A preparation method of a PVDC composition, comprising the following steps:

[0041] (1) Prepare the reaction raw materials for subsequent use, and the reaction raw materials consist of:

[0042] Deionized water 1279.6kg

[0043] PH value buffer regulator: disodium dihydrogen pyrophosphate 0.8kg

[0044] Dispersant: hydroxypropyl methylcellulose 0.6kg

[0045] VDC single unit 730kg

[0046] MA monomer 70kg

[0047] Initiator: azobisisobutyronitrile 2kg

[0048] (2) prepare pH value buffer regulator aqueous solution and dispersant aqueous solution: disodium dihydrogen pyrophosphate 0.8kg, deionized water 11.2kg are mixed with pH value buffer regulator aqueous solution; Hydroxypropyl methylcellulose 0.6kg, 258.4kg of deionized water is prepared into aqueous dispersant solution;

[0049] (3) Preparation of mixed monomer: mix 730kg VDC monomer and 70kgMA monomer evenly to prepare mixed monomer;

[0050] (4) Add 710kg deionized water and 12kgPH value buffer regulator ...

example 3

[0054] A preparation method of a PVDC composition, comprising the following steps:

[0055] (1) Prepare the reaction raw materials for subsequent use, and the reaction raw materials consist of:

[0056] Deionized water 1274.8kg

[0057] PH value buffer regulator: disodium hydrogen phosphate 0.4kg

[0058] Dispersant: methyl cellulose 1.6kg

[0059] VDC single unit 710kg

[0060] MA monomer 90kg

[0061] Initiator: azobisisoheptanonitrile 3.6kg

[0062] (2) Preparation of pH buffer regulator aqueous solution and dispersant aqueous solution: disodium hydrogen phosphate 0.4kg, deionized water 7kg is mixed with pH value buffer regulator aqueous solution; With methyl cellulose 1.6kg, deionized water 220kg is formulated into composition Aqueous solution of powder;

[0063] (3) Preparation of mixed monomer: mix 710kg VDC monomer and 90kgMA monomer evenly to prepare mixed monomer;

[0064] (4) Add 690kg deionized water and 7.4kgPH value buffer regulator aqueous solution to 3M ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a PVDC (polyvinyl dichloride) composition. The method consists of: according to a raw material formula, adding 54-56% of deionized water, a pH value buffer conditioning agent water solution, 20-80% of a mixed monomer, 20-80% of an initiator, and 20-80% of a dispersant water solution into a polymerization kettle, conducting cold dispersion for 30min, then raising the temperature to 65-80DEG C under a stirring rotation speed of 40-100rpm, starting a polymerization reaction, simultaneously adding the remaining reaction raw materials at different speeds, at the end of replenishing, further performing polymerization reaction for 2-4h, then terminating the polymerization reaction, removing the residual monomer in vacuum, carrying out cooling discharge, centrifugation and drying, thus obtaining the PVDC composition. The method provided in the invention has the advantages of simple process, smooth polymerization process, and no concentrated exothermic phenomenon. The prepared PVDC composition has excellent processability. A prepared multi-layer coextrusion film has a uniform film surface and no fisheye, and has good transparency and barrier properties.

Description

technical field [0001] The present invention relates to a preparation method of a PVDC composition, more specifically, the present invention relates to a preparation method of a VDC / MA copolymerized PVDC composition. Background technique [0002] The main component of polyvinylidene chloride (PVDC) is vinylidene chloride (VDC). Due to the symmetrical molecular structure and the presence of hydrophobic chlorine, it has high crystallinity and melting point, and is water-resistant and oxygen-resistant. The performance is good, and the gas barrier property is not affected by the ambient humidity. It is widely used in food, medicine, military industry and other fields. With the development of production and the improvement of living standards, people have put forward higher requirements for the barrier properties of plastic packaging materials, especially the packaging of food, medicine and other commodities requires higher barrier properties, so PVDC-based plastic packaging mate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/08C08F220/14C08L27/08
Inventor 陈俊杰苏兰辉吴宇鹏吕颖琦邓建明韩金铭
Owner ZHEJIANG QUZHOU JUSU CHEM IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap