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An environmentally friendly flame-retardant low-odor acrylic structural adhesive

A low-odor, acrylic technology, applied in the direction of adhesive types, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of fast burning speed, hidden danger of fire escape, violation, etc., to ensure the bonding strength, The effect of the best bonding performance

Active Publication Date: 2018-02-02
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as one of the important materials in this application field, acrylic adhesives are flammable materials. Their limiting oxygen index is mostly lower than 21%, and their burning speed is relatively fast, which brings great harm to people's life and fire escape. Greater hidden danger
Halogen flame retardant is the most effective flame retardant, but its material will produce toxic and harmful substances after burning, accompanied by a lot of smoke, which is contrary to the environmental protection concept of non-toxic and pollution-free in today's society. Halogen-free has become a hot spot in the development of flame retardant materials
Both patent CN103834308 and patent CN103074000 disclose an environmentally friendly acrylic adhesive, but none of the above adhesives contain flame retardants and are flammable materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of phosphorus-based adhesion flame retardant accelerator

[0024] Add 5mol of 4-hydroxybutyl acrylate and 0.03mol of hydroquinone into the reactor, stir, control the temperature of the reactor between 10-15°C, add 1mol of phosphorus pentoxide in batches, and control the temperature rise The rate is 2°C / min, the temperature is raised to 65-70°C, reacted for 4-5h, cooled to room temperature, and discharged to obtain the phosphorus-based attached flame retardant accelerator.

[0025] (2) Preparation of component A and component B

[0026] Preparation of component A: 23.6 kg of hydroxyethyl methacrylate, 13.8 kg of isobornyl methacrylate, 2.8 kg of propoxylated pentaerythritol tetraacrylate, 0.7 kg of hydroquinone, 9.2 kg of nitrile rubber, and 6.4 kg of ABS resin kg into the reactor, and stirred until the resin was completely dissolved; then into the reactor, 13.8kg of polyetherimide resin powder, 5.5kg of cumene hydroperoxide, 1,1-di(tert-butylperoxy) rin...

Embodiment 2

[0031] (1) Preparation of phosphorus-based adhesion flame retardant accelerator

[0032] Add 4mol of 4-hydroxybutyl acrylate, 1mol of pentaerythritol triacrylate and 0.03mol of hydroquinone into the reactor, stir, control the temperature of the reactor between 10-15°C, and add 1mol of Phosphorus pentoxide, control the heating rate at 2°C / min, raise the temperature to 65-70°C, react for 4-5h, cool to room temperature, and discharge to obtain phosphorus-based attached flame retardant accelerator.

[0033] (2) Preparation of component A and component B

[0034] Preparation of component A: 21.1kg of hydroxypropyl methacrylate, 10kg of isobornyl methacrylate, 4kg of ethoxylated pentaerythritol tetraacrylate, 0.5kg of p-benzoquinone, 2,2,6,6-tetramethylpiperene Put 0.2kg of pyridine oxide, 9kg of nitrile rubber, and 4kg of MBS resin into the reactor, stir until the resin is completely dissolved; then put 10kg of polyetherimide-siloxane copolymer powder and polyphenylene ether resin...

Embodiment 3

[0039] (1) Preparation of phosphorus-based adhesion flame retardant accelerator

[0040] Add 5mol of 4-hydroxybutyl acrylate and 0.03mol of hydroquinone into the reactor, stir, control the temperature of the reactor between 10-15°C, add 1mol of phosphorus pentoxide in batches, and control the temperature rise The rate is 2°C / min, the temperature is raised to 65-70°C, reacted for 4-5h, cooled to room temperature, and discharged to obtain the phosphorus-based attached flame retardant accelerator.

[0041] (2) Preparation of component A and component B

[0042] Preparation of component A: 23.6 kg of hydroxyethyl methacrylate, 13.8 kg of isobornyl methacrylate, 2.8 kg of propoxylated pentaerythritol tetraacrylate, 0.7 kg of hydroquinone, 9.2 kg of nitrile rubber, and 6.4 kg of ABS resin kg into the reactor, and stirred until the resin was completely dissolved; then into the reactor, 13.8kg of polyetherimide resin powder, 5.5kg of cumene hydroperoxide, 1,1-di(tert-butylperoxy) rin...

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Abstract

The invention discloses an environment-friendly inflaming-retarding low-odor acrylic acid structural adhesive. The environment-friendly inflaming-retarding low-odor acrylic acid structural adhesive is composed of a component A and a component B. The component A is prepared from 20-60 parts of acrylate monomers, 12-30 parts of toughened resin, 8-20 parts of carbon formation synergistic resin, 3-10 parts of oxidizing agent, 0.2-4 parts of stabilizer, and 15-30 parts of fire retardant A. The component B is prepared from 20-50 parts of acrylate monomers, 12-25 parts of toughened resin, 8-25 parts of carbon formation synergistic resin, 2-10 parts of reducing agent, 0.2-4 parts of stabilizer, 10-30 parts of fire retardant B, 8-30 parts of phosphorus adhesion inflaming retarding accelerator and 1-3 parts of curing accelerator. The prepared acrylic acid structural adhesive is low in odor, free of halogen and environmentally friendly; meanwhile, flame retardant property can reach the V0 level, and the bonding strength of the adhesive can be effectively improved through the self-made phosphorus adhesion inflaming retarding accelerator and a specific redox system.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an environment-friendly, flame-retardant and low-odor acrylic structural adhesive. Background technique [0002] The second-generation Structural Acrylic Adhesive (SGA) has the advantages of high adhesion and wide range of bonding substrates, and has been widely used in electronics, rail transit, automobiles, construction, cultural, educational and entertainment products and other industries. However, it uses methyl methacrylate as the main monomer, which has a low boiling point and a strong odor, causing serious harm to sizing personnel and the environment. With the introduction of environmental regulations and the improvement of safety and environmental awareness of operators, the development and application of low-odor and environmentally friendly acrylic structural adhesives based on high-boiling point acrylic monomers have gradually become the key direc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/14C09J11/06C09J11/04C09J11/08
CPCC08L2201/02C08L2205/035C09J11/04C09J11/06C09J11/08C09J133/14C08L55/02C08L9/02C08L79/08C08K13/02C08K5/549C08K2003/323C08K2003/2227C08K5/521C08L51/04C08L83/12C08K3/346
Inventor 高瀚文甘志勇曾照坤刘川
Owner TONSAN ADHESIVES INC
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