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Polyvinylidene chloride copolymer emulsion for glass fiber dip-coating liquid, as well as preparation method and use thereof

A polyvinylidene chloride and glass fiber technology, used in fiber processing, textiles and papermaking, etc., can solve the problems of poor latex stability and insufficiently uniform colloidal particles, and achieve high alkali resistance strength, good particle uniformity, and reduced energy. consumption effect

Active Publication Date: 2015-04-08
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

The latex reported above has poor stability and the colloidal particles are not uniform enough

Method used

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  • Polyvinylidene chloride copolymer emulsion for glass fiber dip-coating liquid, as well as preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Raw material preparation: mix 70kg of vinylidene chloride, 30kg of butyl acrylate, and 10kg of acrylonitrile, stir for 2 hours to make a mixed monomer; add 160g of tert-butyl hydroperoxide into 8kg of deionized water for stirring and mixing. Tert-butyl hydroperoxide solution; 160 g of sodium formaldehyde sulfoxylate is added in 8 kg of deionized water and stirred and mixed to make sodium formaldehyde sulfoxylate solution; sodium dodecylsulfonate 600 g, dodecylbenzene Add 600g of sodium sulfonate to 8kg of water and mix, then add deionized water to 10kg for cold dispersion for 2 hours to make a mixed emulsifier solution;

[0054]2. Seed polymerization: Add 100kg of deionized water to the reactor, add 45g of emulsifier sodium dodecylbenzenesulfonate, 160g of OP-10, add 10g of ammonium acetate, 3g of tert-butyl hydroperoxide, seal The kettle was replaced with gas three times, vacuumized, 3% mixed monomer was sucked in, cold dispersed (stirred) for 0.5h; the temperature ...

Embodiment 2

[0064] 1. Raw material preparation: mix 82.5kg of vinylidene chloride, 27kg of ethyl acrylate, and 0.5kg of acrylonitrile, stir for 2 hours to make a mixed monomer; add 160g of tert-butyl hydroperoxide into 8kg of deionized water for stirring and mixing Make tert-butyl hydroperoxide solution; Add sodium formaldehyde sulfoxylate 160g in deionized water 8kg and stir and mix to make sodium formaldehyde sulfoxylate solution; Sodium dodecylsulfonate 600g, dodecane Add 600g of sodium phenylsulfonate to 8kg of water and mix, add deionized water to 10kg for cold dispersion for 2 hours, and make a mixed emulsifier solution;

[0065] 2. Seed polymerization: Add 100kg of deionized water or soft water to the reactor, add 45g of emulsifier sodium dodecylbenzenesulfonate, 160g of OP-10, add 10g of ammonium acetate and 3g of tert-butyl hydroperoxide , seal the kettle, replace the gas three times, vacuumize, inhale 3% mixed monomer, cold disperse (stir) for 0.5h; heat up to 47°C, pump in init...

Embodiment 3

[0068] 1. Raw material preparation: mix 26kg of vinylidene chloride, 12kg of methyl acrylate, and 2kg of acrylonitrile, and stir for 2 hours to make a mixed monomer; add 160g of tert-butyl hydroperoxide into 8kg of deionized water for stirring and mixing. Tert-butyl hydroperoxide solution; 160 g of sodium formaldehyde sulfoxylate is added in 8 kg of deionized water and stirred and mixed to make sodium formaldehyde sulfoxylate solution; sodium dodecylsulfonate 600 g, dodecylbenzene Add 600g of sodium sulfonate to 8kg of water and mix, then add deionized water to 10kg for cold dispersion for 2 hours to make a mixed emulsifier solution;

[0069] 2. Seed polymerization: Add 100kg of deionized water or soft water to the reactor, add 45g of emulsifier sodium dodecylbenzenesulfonate, 160g of OP-10, add 10g of ammonium acetate and 3g of tert-butyl hydroperoxide , seal the kettle, replace the gas three times, vacuumize, inhale 3% mixed monomer, cold disperse (stir) for 0.5h; heat up to...

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Abstract

The invention provides a polyvinylidene chloride copolymer emulsion for a glass fiber dip-coating liquid, as well as a preparation method and use thereof. The polyvinylidene chloride copolymer emulsion contains the following ingredients by weight calculated by 100 parts: 20-55 parts of monomer mixture which comprises vinylidene chloride accounting for 65-75 wt% of monomer mixture, acrylates accounting for 20-30 wt% of monomer mixture and acrylonitrile accounting for 5-10 wt% of monomer mixture; 0.1025 part of seed polymer emulsifier which comprises 0.0225 part of sodium dodecyl benzene sulfonate and 0.08 part of OP-10; 0.16 part of an initiator which comprises 0.08 part of organic peroxides and 0.08 part of sodium formaldehyde sulfoxylate; 0.3-1.2 parts of mixed emulsifier which comprises 0.15-0.6 part of sodium dodecyl sulfate and 0.15-0.6 part of sodium dodecyl benzene sulfonate. The dip-coating liquid has high stability, is not liable to demulsification upon storage for more than two years, has good uniformity of emulsion particles, and is excellent in leak tightness, flame retardancy and resistance to alkali. The polymerization process of the dip-coating liquid is highly safe and convenient for temperature / pressure control and has a short reaction time. The temperature for heat treatment during the dip-coating process is reduced.

Description

technical field [0001] The present invention relates to a polyvinylidene chloride copolymer emulsion for glass fiber dipping liquid and its preparation method and use, especially a PVDC emulsion for glass fiber dipping liquid prepared by seed emulsion polymerization and its preparation method and use . Background technique [0002] In recent years, glass fiber mesh cloth impregnated with styrene-acrylic emulsion has been widely used in energy-saving buildings, but the application of styrene-acrylic emulsion in energy-saving buildings is limited due to the poor flame resistance of styrene-acrylic emulsion coating and poor bonding with concrete. . [0003] At present, epoxy resin, polyester resin and polyurethane resin are basically used for dip coating or infiltration of glass fiber. Patents CN101746963A, 102020427A, 102211882A, and 102219399A relate to sizing agents for alkali-free glass fiber direct yarns using epoxy resin emulsions, CN101696550A relates to sizing agents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/10C08F220/14C08F220/18C08F2/26C08F2/30C08F4/40D06M15/248
Inventor 方勇邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD