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PVDC coating material with high barrier performance and preparation method thereof

A coating material and high barrier technology, applied in coatings, antifouling/underwater coatings, paints containing biocide, etc., can solve the problems of poor thermal stability and barrier failure of PVDC latex, and achieve strong light redox Function, anti-sedimentation and coagulation, strong bactericidal and anti-mildew effect

Inactive Publication Date: 2018-07-06
CHANGDE JINDE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a PVDC coating material with high barrier performance and its preparation method, which has the advantages of high-efficiency barrier, high-efficiency antibacterial, anti-mildew, and high-efficiency mechanical strength, and solves the problem of thermal stability of PVDC latex. Poor, when it is heated or placed at room temperature for a long time, it is easy to produce double bond conjugation, escape hydrogen chloride, cause cavities between molecules, and technical problems of barrier failure

Method used

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  • PVDC coating material with high barrier performance and preparation method thereof
  • PVDC coating material with high barrier performance and preparation method thereof
  • PVDC coating material with high barrier performance and preparation method thereof

Examples

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Effect test

Embodiment 1

[0050] (1) Evenly disperse 10 parts by mass of silica nanoparticles with a particle size of 30nm in 50 parts by mass of ultrapure water, heat to 80°C, stir for 5min, and then add 0.05 parts by mass of ammonia water and 0.4 parts by mass of Aminopropyltriethoxysilane, fully stirred for 6 hours, cooled to room temperature, centrifuged, rinsed with deionized water three times, washed the unreacted substances to obtain a solid, and put the obtained solid into a ball mill for 12 hours , to obtain amino-modified silica powder;

[0051] (2) Add 0.5 g of amino-modified silica powder to 20 parts by mass of ultrapure water, stir and dissolve fully, add 2 parts by mass of piperazine aqueous solution with a mass fraction of 2%, and add 3 parts by mass after stirring and dissolving The mass fraction of one part is 3% triethylamine, after stirring and dissolving, the aqueous phase solution is prepared;

[0052] (3) Dissolve 10 parts by mass of trimesoyl chloride light yellow solid powder i...

Embodiment 2

[0068] (1) Evenly disperse 12 parts by mass of silica nanoparticles with a particle size of 50nm in 55 parts by mass of ultrapure water, heat to 90°C, stir for 8min, and then add 0.08 parts by mass of ammonia water and 0.8 parts by mass of Aminopropyltriethoxysilane, fully stirred for 6 hours, cooled to room temperature, centrifuged, rinsed with deionized water three times, washed the unreacted substances to obtain a solid, and put the obtained solid into a ball mill for 12 hours , to obtain amino-modified silica powder;

[0069] (2) Add 0.8 g of amino-modified silica powder to 25 parts by mass of ultrapure water. After fully stirring and dissolving, add 4 parts by mass of piperazine aqueous solution with a mass fraction of 2%. After stirring and dissolving, add 5 parts by mass of The mass fraction of one part is 3% triethylamine, after stirring and dissolving, the aqueous phase solution is prepared;

[0070] (3) dissolving 15 parts by mass of trimesoyl chloride light yellow ...

Embodiment 3

[0086] (1) Evenly disperse 15 parts by mass of silica nanoparticles with a particle size of 60nm in 60 parts by mass of ultrapure water, heat to 100°C, stir for 10 minutes, and then add 0.08 parts by mass of ammonia water and 1 part by mass of Aminopropyltriethoxysilane, fully stirred for 6 hours, cooled to room temperature, centrifuged, rinsed with deionized water three times, washed the unreacted substances to obtain a solid, and put the obtained solid into a ball mill for 12 hours , to obtain amino-modified silica powder;

[0087] (2) Add 1.0 g of amino-modified silica powder to 30 parts by mass of ultrapure water. After fully stirring and dissolving, add 5 parts by mass of piperazine aqueous solution with a mass fraction of 2%. After stirring and dissolving, add 7 mass parts The mass fraction of one part is 3% triethylamine, after stirring and dissolving, the aqueous phase solution is prepared;

[0088] (3) Dissolve 15 parts by mass of trimesoyl chloride light yellow soli...

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Abstract

The invention discloses a PVDC coating material with high barrier performance. The PVDC coating material comprises a modified PA membrane, wherein the outer side surface of the modified PA membrane iscoated with modified PVDC rubber latex, the inner side surface of the modified PA membrane is coated with modified PVDC nano rubber, the modified PVDC nano rubber is prepared from the following raw materials: ultrapure water, a PH value buffering adjusting agent, vinylidene chloride monomers, methyl acrylate monomers, an initiator, and a dispersion agent, the thickness of the modified PA membraneis 81 to 89 micrometers, the thickness of the modified PVDC rubber latex smeared on the outer side surface of the modified PA membrane is 1.5 to 1.8 micrometers, the oxygen permeation amount of the PVDC coating material at the standard conditions that the temperature is 23 DEG C, the relative humidity is 65 percent and the thickness is 25.4 micrometers is 1.18 to 2.12 ml / M<2>.24h.0.1MPa, and thehumidity permeation amount is 0.1 to 0.96 g / M<2>.24h.0.1MPa. By adopting the PVDC coating material with the high barrier performance, the technical problems that the PVDC rubber latex is poor in heatstability, the dual-bond conjugation easily occurs when the PVDC rubber latex is heated or stored for a long term at a normal temperature, hydrogen chloride is leaked, holes are formed among molecules and the barrier performance is in failure can be solved.

Description

technical field [0001] The invention relates to the technical field of high barrier coating materials, in particular to a PVDC coating material with high barrier performance and a preparation method thereof. Background technique [0002] PVDC (chemical name polyvinylidene chloride) is a packaging material with the best comprehensive barrier performance among plastic packaging in the world today. It is not only different from polyvinyl alcohol, which makes the gas barrier performance drop sharply with the increase of moisture absorption, nor is it different from nylon film, which makes the moisture barrier performance worse due to water absorption, but it is a high barrier performance material with excellent moisture barrier and gas barrier performance. . PVDC has a long history of application abroad. Since DOW Chemical in the United States first realized industrial production in the 1930s, PVDC has become synonymous with high barrier, and the packaging industry even calls ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J7/12C08L77/00C08F214/08C08F220/14C08F2/18C09D127/08C09D7/43C09D5/14C09D7/65
CPCC08J7/042C08F2/18C08F214/08C08F220/14C08J7/12C08J2377/00C08J2427/08C08K2201/011C08L2205/03C09D5/14C09D127/08C08L5/08C08L1/28C08K7/06C08K5/053
Inventor 余赞张勇军田璐钟文钱正宇陈华章杰韦雪雪杜建军
Owner CHANGDE JINDE NEW MATERIAL TECH CO LTD
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