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Polyvinylidene chloride copolymer emulsion used for glass fiber dip coating and preparation thereof and application thereof

A polyvinylidene chloride and copolymer emulsion technology, which is used in the field of glass fiber dip coating emulsion and glass fiber dip coating polyvinylidene chloride emulsion, can solve the problem of flame retardancy and alkali resistance film-forming temperature. and other problems, to achieve the effect of good alkali resistance, low film forming temperature, and reduced energy consumption

Active Publication Date: 2015-07-22
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a lot of research has been carried out on polyvinylidene chloride copolymer emulsion for dip coating. For example, patent application CN200910144212 mentions the preparation method of water-based vinylidene chloride primer for high-barrier plastic films. It is prepared by copolymerization of mixed monomers such as methacrylic acid, itaconic acid, acrylic acid, N-methylolacrylamide and other polymerizable functional monomers. The obtained polyvinylidene chloride primer has good wettability and adhesion Strong, suitable for high barrier plastic film coating; patent application CN200610155085 discloses a special water-based PVDC latex for coating on special cloth and its preparation method, the main copolymerization mixed monomers include vinylidene chloride, acrylate soft monomer Acrylate monomers and unsaturated fatty acids can improve the water resistance of PVDC emulsion by increasing the content of vinylidene chloride and reducing the content of unsaturated fatty acid monomers, and have certain flexibility and heat resistance; but the above-mentioned PVDC Copolymer emulsion coatings did not mention improvements in properties such as flame retardancy, alkali resistance, and film-forming temperature.

Method used

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  • Polyvinylidene chloride copolymer emulsion used for glass fiber dip coating and preparation thereof and application thereof
  • Polyvinylidene chloride copolymer emulsion used for glass fiber dip coating and preparation thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Polyvinylidene chloride copolymer emulsion, the total weight of the copolymer system is 200kg, and the mixed monomer accounts for 60kg;

[0040] Vinylidene chloride 42kg;

[0041] Butyl acrylate 15kg;

[0042] Acrylonitrile 3kg;

[0043] Auxiliary ammonium acetate 8g;

[0044] Initiator: 160g of tert-butyl hydroperoxide and 160g of sodium formaldehyde sulfoxylate;

[0045] Emulsifier: 0.8kg of sodium dodecylsulfonate and 200g of OP-10, and add deionized water or soft water;

[0046] Appropriate amount of pH regulator;

[0047] The specific operation process is:

[0048] 1) Preparation of raw materials:

[0049] (1) Preparation of the initiator solution: firstly mix the initiator with tert-butyl hydroperoxide 160g / 8kg water and sodium formaldehyde sulfoxylate 160g / 8kg water, or potassium persulfate 160g / 8kg water, or ammonium persulfate 160g / 8kg water and sodium bisulfite 160g / 8kg water are made into initiator solution;

[0050] (2) Preparation of emulsifier sol...

Embodiment 2

[0062] Polyvinylidene chloride copolymer emulsion, the total weight of the copolymer system is 200kg, and the mixed monomer accounts for 80kg;

[0063] Vinylidene chloride 56kg;

[0064] Butyl acrylate 20kg;

[0065] Acrylonitrile 4kg;

[0066] Auxiliary ammonium acetate 10g;

[0067] Initiator: potassium persulfate 160g;

[0068] Emulsifier: Sodium Lauryl Sulfonate 1kg and 220g of OP-10, and add deionized water or soft water;

[0069] Appropriate amount of pH regulator;

[0070] The specific operation process is:

[0071] 1) The preparation of initiator solution, emulsifier solution and mixed monomer is the same as in Example 1.

[0072] 2) Add bottom water to the reaction kettle, based on the total weight of the copolymerization system of 200kg, add 10g of ammonium acetate as an auxiliary agent, 1kg of emulsifier sodium dodecylsulfonate and 220g of OP-10, replace the air with nitrogen three times, and vacuumize .

[0073] 3) Vacuumize to -0.08MPa, pump in 80kg of mix...

Embodiment 3

[0076] Polyvinylidene chloride copolymer emulsion, the total weight of the copolymer system is 200kg, and the mixed monomer accounts for 100kg;

[0077] Vinylidene chloride 70kg;

[0078] Butyl acrylate 25kg;

[0079] Acrylonitrile 5kg.

[0080] Auxiliary ammonium acetate 12g;

[0081] Initiator: 160g of ammonium persulfate and 160g of sodium bisulfite;

[0082] Emulsifier: 1.2kg of sodium lauryl sulfate and 240g of OP-10, and add deionized water or soft water;

[0083] Appropriate amount of pH regulator;

[0084] The specific operation process is:

[0085] 1) The preparation of initiator solution, emulsifier solution and mixed monomer is the same as in Example 1.

[0086] 2) Add bottom water into the reaction kettle, based on the total weight of the copolymerization system of 200kg, add 12g of auxiliary ammonium acetate, 1.2kg of emulsifier sodium dodecylsulfonate and 240g of OP-10, replace the air with nitrogen three times, pump vacuum.

[0087] 3) Vacuumize to -0.08...

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Abstract

The invention discloses a polyvinylidene chloride copolymer emulsion used for glass fiber dip coating and once polymerization preparation and application of the polyvinylidene chloride copolymer emulsion used for the glass fiber dip coating. The emulsion is obtained by a mixed monomer composed of a certain amount of vinylidene chloride, butyl acrylate and acrylonitrile, an addition agent, and an emulsifying agent comprising sodium dodecyl sulfate and polyoxyethylene octylphenol ether. The obtained polyvinyl dichloride (PVDC) copolymer emulsion is free from extraneous odour, low in film formation temperature (25 DEG C), good in stability, free of sediment after placed for 24 months under the condition of the temperature of 30 DEG C and relative humidity of 70 percent, good in fire resistance, capable of being used for dip coating of a glass fiber, and capable of obtaining a food grade standard through processing. The glass fiber dip coated by the PVDC copolymer emulsion is good in fire resistance, good in alkali-resisting intensity, and low in heating temperature of dip coating of relative styrene-acrylic emulsion during a dip coating process so as to improve combining capacity of the emulsion and the glass fiber. The polyvinylidene chloride copolymer emulsion has the advantage of reducing energy consumption, and meets the operating requirement for the alkali-resisting and fire-resisting glass fiber used by constructions in a strengthened mode.

Description

technical field [0001] The invention relates to an emulsion for glass fiber dip coating, in particular to a polyvinylidene chloride emulsion for glass fiber dip coating and its preparation method and application, belonging to the field of polymer materials. Background technique [0002] At present, in order to increase the strength and prevent cracks or cracks in the external wall insulation and other wall veneers of buildings, glass fiber mesh cloth is widely used as a reinforcing material. In order to prolong the service life of the grid cloth, it is necessary to obtain alkali-resistant glass fiber, which is to coat a layer of emulsion on the glass fiber gray cloth, and the emulsion layer should have alkali-resistant function. With the improvement of fire protection requirements for external wall insulation systems, it is necessary to develop a glass fiber that is both alkali resistant and flame retardant. [0003] In recent years, styrene-acrylic emulsion impregnated gla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/08C08F220/18C08F220/44C08F2/26C08F2/30C03C25/30
Inventor 方勇邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD