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Efficient halogen-free flame-retardant epoxy adhesive and preparation method thereof

A technology of epoxy adhesive and flame retardant, which is used in adhesives, epoxy resin glue, polymer adhesive additives, etc., can solve the problem of easy fire, low oxygen index of epoxy resin, easy dripping of epoxy resin, etc. problem, to achieve the effect of reducing flammability, excellent bonding performance and good flame retardant effect

Active Publication Date: 2020-04-10
康达新材料(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the oxygen index of epoxy resin is low (about 19.8), which is a flammable material, and epoxy resin is easy to drip, and it will continue to spontaneously ignite after leaving the fire, which is easy to cause fire. Therefore, it is necessary to modify the flame retardant of epoxy adhesive

Method used

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  • Efficient halogen-free flame-retardant epoxy adhesive and preparation method thereof
  • Efficient halogen-free flame-retardant epoxy adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A component raw materials: bisphenol A epoxy resin (E-51) 45kg, dimer acid modified epoxy resin 10kg, melamine cyanurate (MCA) 25kg, antimony trioxide (Sb 2 o 3 ) 5kg, hyperbranched macromolecular carbon forming agent 3kg, polytetrafluoroethylene 0.5kg, 1,4-butanediol diglycidyl ether (622) 5kg, fumed silica 0.3kg, aluminum hydroxide 30kg, γ-shrink Glyceryl ether oxypropyl trimethoxysilane (KH-560) 1.0kg, the above-mentioned raw materials are added into the reaction kettle in order, and stirred and dispersed until the materials are uniform and have no color difference.

[0049] B component raw materials: modified amine curing agent 50kg, fumed silica 0.6kg, aluminum hydroxide 30kg, γ-aminopropyltriethoxysilane (KH-550) 0.6kg, the above-mentioned raw materials are added to the reaction kettle in order , Stir and disperse until the material is uniform and without color difference.

Embodiment 2

[0051] A component raw materials: bisphenol A epoxy resin (E-51) 25kg, bisphenol A epoxy resin (E-44) 10kg, polyurethane modified epoxy resin 10kg, ammonium polyphosphate (APP) 20kg, trioxide Antimony (Sb 2 o 3 ) 4kg, hyperbranched macromolecular carbon forming agent 3kg, polytetrafluoroethylene 0.5kg, 1,6-hexanediol diglycidyl ether 5kg, fumed silica 0.3kg, aluminum hydroxide 25kg, montmorillonite 5kg, γ - 0.9 kg of glycidyl etheroxypropyltrimethoxysilane (KH-560), the above-mentioned raw materials are added into the reaction kettle in sequence, and stirred and dispersed until the materials are uniform and have no color difference.

[0052] B component raw materials: modified amine curing agent 45kg, fumed silica 0.6kg, aluminum hydroxide 25kg, montmorillonite 5kg, γ-aminopropyltriethoxysilane (KH-550) 0.6kg, the above raw materials are as follows Sequentially add to the reaction kettle, stir and disperse until the material is uniform and there is no color difference.

Embodiment 3

[0054]A component raw materials: bisphenol A epoxy resin (E-51) 40kg, bisphenol A epoxy resin (E-44) 10kg, carboxyl-terminated nitrile rubber and epoxy resin prepolymer 10kg, melamine cyanurate ( MCA) 25kg, zinc borate 5kg, hyperbranched macromolecular carbon forming agent 3kg, polytetrafluoroethylene 0.5kg, 1,4-butanediol diglycidyl ether 5kg, fumed silica 0.3kg, aluminum hydroxide 20kg, hydrogen Magnesium oxide 15kg, γ-glycidyl etheroxypropyl trimethoxysilane (KH-560) 0.8kg, the above raw materials were added to the reaction kettle in sequence, stirred and dispersed until the materials were uniform and without color difference.

[0055] B component raw materials: modified amine curing agent 50kg, fumed silica 0.6kg, aluminum hydroxide 20kg, magnesium hydroxide 15kg, γ-aminopropyl triethoxysilane (KH-550) 0.6kg, the above raw materials are as follows Sequentially add to the reaction kettle, stir and disperse until the material is uniform and there is no color difference.

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Abstract

The invention discloses an efficient halogen-free flame-retardant epoxy adhesive which comprises a component A and a component B. The mass ratio of the component A to the component B is (3: 1)-(2: 1),and the component A comprises the following components in percentage by mass: 20-50% of epoxy resin; 5-10% of a toughening agent; 10%-30% of a halogen-free flame retardant; 3-5% of a flame retardantsynergist; 3-5% of a charring agent; 0.1%-2% of an anti-dripping agent; 3-10% of a diluent; 0.2-1% of fumed silica; 20-40% of a filler; and 0.5%-1% of a silane coupling agent; the component B comprises the following components in percentage by mass: 30-60% of a modified amine curing agent; 0.2 -1% of fumed silica; 20-40% of a flame retardant filler; and 0.5-1% of a silane coupling agent. The efficient halogen-free flame-retardant epoxy adhesive has the characteristics of good flame-retardant effect, dripping resistance, small fuming amount, excellent adhesive property and the like.

Description

technical field [0001] The invention belongs to the field of adhesive preparation, and in particular relates to a high-efficiency halogen-free flame-retardant epoxy adhesive and a preparation method thereof. Background technique [0002] With the continuous development of China's economy, people's demand for a better life continues to increase, and electronic appliances play an increasingly significant role in people's better life. , Behind these complicated functions are the high requirements, high quality, and high standards for electronic and electrical raw materials. One of these many requirements is flame retardancy. [0003] Electronic appliances contain many plastics, rubber, adhesives and other materials. These materials are often flammable materials. When burning, they have high calorific value, fast flame propagation speed, often accompanied by thick smoke, and sometimes even produce toxic gases. Once a fire occurs, Often heavy losses. [0004] Epoxy resin adhesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/04C09J11/08C09J11/06
CPCC09J163/00C09J11/04C09J11/08C09J11/06C08L2201/02C08L2201/22C08K2003/2227C08K2003/323C08K2003/387C08L27/18C08K13/02C08K5/34928C08K3/2279C08K3/36C08K3/22C08K5/544C08K5/5435C08L63/00C08K3/32C08K3/346C08K3/38
Inventor 赵江涛刘龙江欧涛刘朝阔钱文娟
Owner 康达新材料(集团)股份有限公司
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