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Halogen-free high-efficiency flame-retardant cationic emulsion modified in-situ by nanomaterials and preparation method thereof

A cationic emulsion and in-situ modification technology, which is applied in the field of halogen-free high-efficiency flame-retardant cationic emulsion and its preparation in-situ modified by nano-materials, can solve the problem of unsatisfactory flame-retardant effect of halogen-free flame retardants and affect polymer water resistance Performance, it is difficult to meet the requirements of B1 grade flame retardant materials, etc., to achieve high reaction conversion rate and efficient flame retardant effect

Active Publication Date: 2020-07-17
JIANGSU RUIKANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, the flame retardant effect of most halogen-free flame retardants is not ideal. When the flame retardant content in the flame retardant material is less than 20%, it is difficult to meet the requirements of B1 flame retardant materials
At the same time, flame retardants that are generally insoluble in water are difficult to suspend stably in latex for a long time; while hydrophilic flame retardants seriously affect the water resistance of the polymer after film formation

Method used

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  • Halogen-free high-efficiency flame-retardant cationic emulsion modified in-situ by nanomaterials and preparation method thereof
  • Halogen-free high-efficiency flame-retardant cationic emulsion modified in-situ by nanomaterials and preparation method thereof
  • Halogen-free high-efficiency flame-retardant cationic emulsion modified in-situ by nanomaterials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] 1). Preparation of cationic seed emulsion

[0068] The seed emulsion proportioning is as follows (parts by weight):

[0069]

[0070] Add primer water in the reaction kettle, add dispersant (mass concentration is 25% cationic starch dispersion liquid), emulsifier, antimony sol (mass concentration is 18% antimony pentoxide nano-sol), azobis For isobutyramide hydrochloride, after vacuum degassing, pass nitrogen to catch oxygen and raise the temperature, add the primer monomer dropwise at 70°C, and keep it warm for 30 minutes after the dripping, the preparation of the primer seed emulsion is completed.

[0071] 2). Preparation of pre-emulsion

[0072] Pre-emulsion a ratio:

[0073]

[0074] Prepare the pre-emulsion at the same time as the primer. First, dissolve the hindered amine radical scavenger in the polymerized monomer MMA according to the proportion of the pre-emulsion b; then dissolve the emulsifier, dispersant, and initiator in the pre-emulsion water acco...

Embodiment 2

[0081] 1). Preparation of cationic seed emulsion

[0082] Seed emulsion ratio:

[0083]

[0084] Add bottoming water into the reaction kettle, add starch dispersion, emulsifier, antimony pentoxide nano-sol, azobisisobutylamidine hydrochloride during stirring, and vacuum degassing, then pass nitrogen to catch oxygen and heat up, at 70°C Add the primer monomer dropwise, keep warm for 30 minutes after dripping, and the preparation of the primer seed emulsion is completed.

[0085] 2). Preparation of pre-emulsion

[0086] Pre-emulsion a ratio:

[0087]

[0088] Proportion of pre-emulsion b:

[0089]

[0090] Prepare the pre-emulsion at the same time as the primer. First, dissolve the hindered amine radical scavenger in the polymerized monomers MMA and BA according to the proportion of the pre-emulsion b; then dissolve the emulsifier, dispersant, and initiator in the pre-emulsion water according to the pre-emulsion a , adding polymerized monomers to pre-emulsify to pr...

Embodiment 3

[0097] 1). Preparation of cationic seed emulsion

[0098] Seed emulsion ratio:

[0099]

[0100] Add bottoming water into the reaction kettle, add starch dispersion, emulsifier, antimony pentoxide nano-sol, azobisisobutylamidine hydrochloride during stirring, and vacuum degassing, then pass nitrogen to catch oxygen and heat up, at 70°C Add the primer monomer dropwise, keep warm for 30 minutes after dripping, and the preparation of the primer seed emulsion is completed.

[0101] 2). Preparation of pre-emulsion

[0102] Pre-emulsion a ratio:

[0103]

[0104] Proportion of pre-emulsion b:

[0105]

[0106] Prepare the pre-emulsion at the same time as the primer. First, dissolve the hindered amine radical scavenger in the polymerized monomers MMA and BA according to the proportion of the pre-emulsion b; then dissolve the emulsifier, dispersant, and initiator in the pre-emulsion water according to the pre-emulsion a , adding polymerized monomers to pre-emulsify to prep...

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Abstract

The invention discloses a nano-material in-situ modified halogen-free efficient flame-retardant cationic emulsion. The nano-material in-situ modified halogen-free efficient flame-retardant cationic emulsion is obtained through subjecting raw materials to cationic in-situ polymerization, wherein based on 100 parts by weight, the raw materials comprises 40-60 parts of water, 25-35 parts of acrylatemonomer, 3-15 parts of antimony pentoxide nano-hydrosol, 0.5-5 parts of hindered amine free radical capturing agent, 0.1-1.5 parts of azo diisobutyl amidine hydrochloride, 0.1-3 parts of emulsifier, 4-7 parts of cationic starch dispersion solution and 0-0.5 parts of silane coupling agent. The invention further discloses a preparation method for the halogen-free efficient flame-retardant cationic emulsion. According to the halogen-free efficient flame-retardant cationic emulsion disclosed by the invention, a flame-retardant system, prepared from antimony pentoxide nano-sol and the hindered amine free radical capturing agent through cooperation, is effectively distributed on the surfaces of or in the acrylic polymer emulsion particles in a nano scale; and the flame-retardant effect is very efficient, and the emulsion is halogen-free and environmentally friendly.

Description

technical field [0001] The invention relates to a halogen-free high-efficiency flame-retardant cationic emulsion modified in situ by nanomaterials and a preparation method thereof, in particular to a halogen-free high-efficiency flame-retardant cationic emulsion modified in-situ by nanomaterials and a preparation method thereof. Background technique [0002] At present, when selecting polymer materials, their flame retardant properties have become one of the main factors that must be considered, which also highlights the urgency of the development of polymer material flame retardant technology. However, in recent years, there have been few reports on flame-retardant polymer materials for halogen-free, high-efficiency, and environmentally friendly water-based systems. Among them, technologies with high flame retardancy, high cost performance, and industrialization are even rarer. [0003] Hindered amines have long been used as light stabilizers in polyolefins. Hindered Amine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/14C08F220/06C08F220/20C08F2/44C08F2/40C08F2/28C08F2/20C08K3/22
CPCC08F2/20C08F2/28C08F2/40C08F2/44C08F220/18C08F220/1804C08K3/2279C08K2201/011C08F212/08C08F220/14C08F220/06C08F220/20
Inventor 江永波任华候宇坤潘毅宋帅
Owner JIANGSU RUIKANG NEW MATERIAL TECH CO LTD
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