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Preparation method of combined phosphorus type flame-retardant acrylate pressure-sensitive adhesive

An acrylate and acrylate-based technology, which is applied in the field of flame-retardant polymer preparation, can solve the problems of flame-retardant pressure-sensitive adhesives and tape products, such as limitations and restrictions, and achieve a balance of technical bottlenecks, improved stability, and improved Effect of Flame Retardancy and Stability

Inactive Publication Date: 2010-08-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005](3) With the improvement of environmental protection awareness and the promulgation of new environmental protection regulations, many rubber products made of neoprene rubber or halogen-containing flame retardants Flame-retardant pressure-sensitive adhesives and tape products are subject to extremely strict restrictions
Although the synthesized intrinsic polymer has the advantages of flame retardancy, non-migration, and non-volatility, with the improvement of environmental protection awareness and the promulgation of new environmental protection regulations, the use of halogen-containing flame-retardant adhesive tape products is subject to extremely strict restrictions.

Method used

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  • Preparation method of combined phosphorus type flame-retardant acrylate pressure-sensitive adhesive
  • Preparation method of combined phosphorus type flame-retardant acrylate pressure-sensitive adhesive
  • Preparation method of combined phosphorus type flame-retardant acrylate pressure-sensitive adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]1) Preparation of solvent-based binder combined with phosphorus-type flame-retardant acrylate copolymer

[0033] a: The design solid content is 40%, 40 parts by mass of acrylate, 60 parts by mass of solvent, and 0.6 part by mass of initiator. The composition and mass percentage of acrylates are: BA50%, 2-EHA12%, VAc23% , HEA4%, AA2%, and phosphorus-containing monomer PAM-300 is 9%;

[0034] b: in N 2 Under protection, 20 parts by mass of the above-mentioned acrylates were sequentially added to a mixed solvent of 7.0 parts by mass of xylene and 35.0 parts by mass of ethyl acetate, mixed uniformly and heated;

[0035] c: Add 0.4 parts by mass of initiator BPO to 7.3 parts by mass of ethyl acetate solvent and mix evenly. When the temperature rises to about 78°C for reflux condensation, add the initiator dropwise to the reaction kettle in step b, dropwise for about 0.5h Completed, constant temperature reaction for 1.0h, then lower the temperature to 75°C for 1.5h;

[0036...

Embodiment 2

[0044] 1) The preparation method of the solvent-based adhesive combined with phosphorus-type flame-retardant acrylate copolymer is as in Example 1.

[0045] 2) Preparation of flame retardant slurry

[0046] Add ethyl acetate into a 1L dispersing cylinder, turn on the high-speed dispersing machine and control the speed at 500rpm / min, then add 1.5g of pigment dispersant Texaphor 9631. After 10min, slowly add metered (300g) APP and APP oil-soluble 1181.5g of anti-sedimentation agent, and the rotation speed was adjusted to 1000rpm / min. After the feeding was completed, the dispersion was continued for 1h, and the above-mentioned prepared slurry was poured into a grinder and ground for 4h to achieve a stable effect, which was set as component 2.

[0047] 3) Preparation of flame-retardant acrylate pressure-sensitive adhesive combined with phosphorus

[0048] Weigh Component 1 and Component 2 and mix them uniformly in proportion. When the mass ratio of APP in Component 2 to Component...

Embodiment 3

[0053] 1) Preparation of solvent-based binder combined with phosphorus-type flame-retardant acrylate copolymer

[0054] a: The design solid content is 40%, 40 parts by mass of acrylate monomer, 60 parts by mass of solvent, and 0.6 part by mass of initiator. The composition and mass percentage of acrylate are: BA41%, 2-EHA12%, VAc23 %, HEA4%, AA2%, phosphorus-containing monomer PAM-300 is 18%;

[0055] b: in N 2 Under protection, 20 parts by mass of the above-mentioned acrylate was sequentially added into a mixed solvent of 2.9 parts by mass of xylene and 27.1 parts by mass of ethyl acetate, stirred to make it evenly mixed and heated up.

[0056] c: Add 0.4 parts by mass of initiator BPO into 12.0 parts by mass of ethyl acetate solvent and stir to dissolve and mix well. When the temperature rises to reflux condensation temperature of 78°C, add the initiator dropwise to the reaction kettle of step b for about 0.5h After the dropwise addition is completed, react at constant tem...

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Abstract

The invention discloses a preparation method of a combined phosphorus type flame-retardant acrylate pressure-sensitive adhesive. The preparation method comprises the following steps: adopting a free radical solution polymerization process and a multistep polymerization process to polymerize flame-retardant phosphorous acrylate monomers and common acrylate monomers to prepare a combined phosphorus type flame-retardant acrylate pressure-sensitive cement by using N2 as shielding gas under the conditions of normal pressure and the temperature of 70-85 DEG C; coating the pressure-sensitive cement, and drying to prepare the combined phosphorus type flame-retardant acrylate pressure-sensitive adhesive; and in order to better enhance the flame retardant property of the pressure-sensitive adhesive, optionally adding flame-retardant sizing to the pressure-sensitive cement, then coating, and drying. The method has a simple process, and the prepared pressure-sensitive adhesive has excellent properties and avoids the environmental pollution caused by a halogenated flame retardant.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant polymer, in particular to a method for preparing a phosphorus-type flame-retardant acrylate pressure-sensitive adhesive. Background technique [0002] Acrylic pressure-sensitive adhesives not only have gloss and color retention, strong durability, and no hydrogen halide corrosive gas is released during combustion, so the amount of acrylic pressure-sensitive adhesives accounts for 10% of the total pressure-sensitive adhesive consumption. More than 90%, the annual consumption is 800,000 tons. At present, many new functional pressure-sensitive adhesive products using acrylate copolymers as adhesives have been developed and applied in many fields. However, the common problems of currently commercially available flame-retardant acrylate pressure-sensitive adhesives are: [0003] (1) Acrylate copolymer is a flammable polymer composed of carbon, hydrogen and oxygen, which is limited in applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/08C09J9/00
Inventor 夏宇正张娜石淑先
Owner BEIJING UNIV OF CHEM TECH
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