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Halogen-free flame-retardant adhesive

A technology of adhesives and composite flame retardants, applied in the direction of adhesive types, other rubber adhesives, adhesives, etc., can solve the problem that the adhesive does not have flame retardancy, achieve solder resistance, good resistance Flammability, good heat resistance effect

Inactive Publication Date: 2020-09-04
广东欣兴旺软板技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing adhesives do not have good flame retardancy

Method used

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  • Halogen-free flame-retardant adhesive

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0012] The halogen-free flame-retardant adhesive of this embodiment, in parts by weight, the halogen-free flame-retardant adhesive includes,

[0013] 15-45 parts of halogen-free epoxy resin;

[0014] 15-60 parts of thermoplastic resin and / or synthetic rubber;

[0015] 0.1-8 parts of curing agent;

[0016] Phosphorus-containing composite flame retardant 5-60 parts.

[0017] The halogen-free flame-retardant adhesive provided by the invention can be obtained by mixing and fully stirring the above materials. The halogen-free flame-retardant adhesive provided by the invention has good flame retardancy, peel strength, electrical properties and soldering heat resistance Non-toxic, and does not contain harmful elements such as halogens and antimonides, and will not pollute the environment. The flame retardant grade of the flexible copper-clad laminate prepared by using the above composition of the present invention reaches UL-94V0 grade, and also has good heat resistance and high p...

no. 2 example

[0025] In parts by weight, the halogen-free flame-retardant adhesive includes 30 parts of halogen-free epoxy resin, 40 parts of synthetic rubber, 7.5 parts of curing agent, and 22.5 parts of phosphorus-containing composite flame retardant, including no The test performance of the halogen flame retardant adhesive is shown in Table 3.

[0026] table 3

[0027] Peel strength (kgf / cm) 1.95 Heat resistance (no blistering after dipping in tin for 10 seconds) 340℃ Flame retardant V-0 flame retardant

[0028] Table 1 shows the properties of the halogen-free flame retardant adhesive provided in this example before curing, after rapid pressing, after curing and after reflow soldering.

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Abstract

The invention relates to a halogen-free flame-retardant adhesive, which comprises the following components in parts by weight: 15-45 parts of halogen-free epoxy resin; 15-60 parts of thermoplastic resin and / or synthetic rubber; 0.1-8 parts of a curing agent; and 5-60 parts of a phosphorus-containing composite flame retardant. The halogen-free flame-retardant adhesive has good flame retardancy, peel strength, electrical properties and welding heat resistance, does not contain harmful substance elements such as halogen and antimonide, and does not pollute the environment. The flame retardant grade of the flexible copper-clad plate prepared from the composition reaches UL-94V0 grade, and the flexible copper-clad plate also has good heat resistance, high peel strength and soldering tin resistance, and is not layered and bubbled after being subjected to tin immersion at 310 DEG C for 1 minute. The halogen-free flame-retardant adhesive has good laminating performance, so that the productionline speed can be increased, and the production efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of flexible copper-clad laminates, and in particular relates to a halogen-free flame-retardant adhesive. Background technique [0002] Flexible copper clad laminates, also known as flexible circuit boards (FPC), require adhesives in the process of making FPCs. However, existing adhesives do not have good flame retardancy. Contents of the invention [0003] The main purpose of the present invention is to provide a halogen-free flame-retardant adhesive with good flame retardancy. [0004] In order to achieve the above-mentioned main purpose, the halogen-free flame-retardant adhesive provided by the present invention, in parts by weight, the halogen-free flame-retardant adhesive includes, [0005] 15-45 parts of halogen-free epoxy resin; [0006] 15-60 parts of thermoplastic resin and / or synthetic rubber; [0007] 0.1-8 parts of curing agent; [0008] Phosphorus-containing composite flame retardant 5-60 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J121/00C09J11/00
CPCC09J163/00C09J121/00C09J11/00C08L2201/02C08L2201/22C08L2201/08C08L21/00C08L63/00
Inventor 彭树荣
Owner 广东欣兴旺软板技术有限公司
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