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Polyvinyl dichloride (PVDC) latex used for interior and exterior wall coating materials and preparation method thereof and application thereof

A technology of exterior wall paint and latex, which is applied in the direction of coating, etc., and can solve the problems of waterproof and low moisture resistance

Active Publication Date: 2013-04-24
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

And utilize polyvinylidene chloride (PVDC) copolymerized latex to prepare environment-friendly, waterproof, moisture-proof (mildew-proof), the bibliographical report of flame-retardant interior and exterior wall coating is still relatively few

Method used

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  • Polyvinyl dichloride (PVDC) latex used for interior and exterior wall coating materials and preparation method thereof and application thereof
  • Polyvinyl dichloride (PVDC) latex used for interior and exterior wall coating materials and preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] For polyvinylidene chloride copolymer latex used in interior and exterior wall coatings, the total weight of the copolymer system is 200kg, and the mixed monomer accounts for 72kg;

[0034] Vinylidene chloride 25.2kg;

[0035] Vinyl chloride 43.2kg;

[0036] Butyl acrylate 3.6kg;

[0037] Auxiliary disodium hydrogen phosphate 16g;

[0038] Initiator: 160g of ammonium persulfate and 160g of sodium bisulfite

[0039] Emulsifier: 1 kg of sodium dodecylbenzene sulfonate and 160 g of OP-10; wherein, sodium dodecylbenzene sulfonate is 400 g of linear sodium dodecylbenzene sulfonate and 600 g of branched chain Sodium dodecyl benzene sulfonate.

[0040] The specific operation process is:

[0041] 1) Preparation of raw materials:

[0042] (1) Preparation of initiator solution: ammonium persulfate 160g and sodium bisulfite 160g are added in deionized water 8kg part and stirred and mixed to make initiator solution;

[0043] (2) Preparation of emulsifier solution: Add 1 kg o...

Embodiment 2

[0054] For polyvinylidene chloride copolymer latex used in interior and exterior wall coatings, the total weight of the copolymer system is 200kg, and the mixed monomer accounts for 72kg;

[0055] Vinylidene chloride 27.36kg;

[0056] Vinyl chloride 43.2kg;

[0057] Butyl acrylate 1.44kg;

[0058] Auxiliary disodium hydrogen phosphate 20g;

[0059] Initiator: 160g of ammonium persulfate and 160g of sodium bisulfite

[0060] Emulsifier: sodium dodecylbenzenesulfonate 1.2kg and 200g of OP-10; wherein, sodium dodecylbenzenesulfonate is linear sodium dodecylbenzenesulfonate with a ratio of 480g and branched sodium dodecylbenzenesulfonate of 720g Sodium dodecylbenzenesulfonate.

[0061] The specific operation process is:

[0062] 1) Preparation of raw materials: The preparation of mixed monomer, emulsifier and initiator is as in Example 1.

[0063] 2) Add bottom water to the reaction kettle, based on the total weight of the copolymerization system of 200kg, add the auxiliary ag...

Embodiment 3

[0066] For polyvinylidene chloride copolymer latex used in interior and exterior wall coatings, the total weight of the copolymer system is 200kg, and the mixed monomer accounts for 72kg;

[0067] Vinylidene chloride 28.8kg;

[0068] Vinyl chloride 39.6kg;

[0069] Butyl acrylate 3.6kg;

[0070] Auxiliary disodium hydrogen phosphate 24g;

[0071] Initiator: 160g of ammonium persulfate and 160g of sodium bisulfite

[0072] Emulsifier: sodium dodecylbenzenesulfonate 1.4kg and 240g of OP-4; wherein, sodium dodecylbenzenesulfonate is straight-chain sodium dodecylbenzenesulfonate and 840g branched Sodium dodecylbenzenesulfonate.

[0073] The specific operation process is:

[0074] 1. Preparation of raw materials: the preparation of mixed monomer, emulsifier and initiator is as in Example 1.

[0075] 2. Put the bottom water into the reaction kettle, based on the total weight of the copolymerization system of 200kg, add the auxiliary agent disodium hydrogen phosphate, emulsifie...

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Abstract

The invention discloses a polyvinyl dichloride (PVDC) latex used for interior and exterior wall coating materials and a preparation method thereof and application thereof. The PVDC latex is obtained by a mixed monomer, an auxiliary, an initiating agent and an emulsifying agent through a once polymerization method, wherein the mixed monomer contains a certain amount of vinylidene chloride, vinyl chloride and acrylic ester, and the emulsifying agent contains sodium dodecyl benzene sulfonate and OP-10 or OP-4. The PVDC latex enables a system to be stable, and is free of emulsification breaking and sediment after placed for 24 months under temperature of 30 DEG C and relative humidity (RH) of 70%, and free of damage by calcium and magnesium in use. The interior and exterior wall coating materials obtained by the PVDC latex have the advantages of being environment-friendly, waterproof, damp proof (mildew resistant), coincident with the V-0 grade of the underwriters laboratories (UL) 94 standard in fire resistance, and the like.

Description

technical field [0001] The invention relates to a PVDC latex, in particular to a PVDC latex used for interior and exterior wall coatings and a preparation method and application thereof, belonging to the field of polymer materials. Background technique [0002] At present, interior wall architectural coatings are mainly styrene-acrylic emulsion paints, vinegar-acrylic emulsion paints and other latex paints, and exterior wall architectural coatings are mainly pure acrylic and styrene-acrylic emulsion paints, as well as water-based and solvent-based silicone-modified acrylic paints. For the emulsion used in the preparation of interior and exterior wall coatings, the oily emulsion has good waterproof and stain resistance, but is not environmentally friendly; the water-based emulsion is good in environmental protection, but poor in waterproof. [0003] Commonly used acrylate latex has many outstanding advantages, such as excellent light resistance, weather resistance, acid and a...

Claims

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Application Information

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IPC IPC(8): C08F214/06C08F214/08C08F220/18C08F2/30C08F2/26C09D127/06
Inventor 方勇邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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