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Modified novolac epoxy resin hot melt adhesive

A phenolic epoxy resin, hot melt adhesive technology, applied in the direction of in-line phenolic epoxy resin adhesives, adhesives, oil/grease/wax adhesives, etc., can solve the viscosity of phenolic epoxy resin hot melt adhesives, etc. Insufficient performance, etc., to achieve the effects of excellent thermal stability, excellent initial viscosity, and high solubility

Inactive Publication Date: 2018-10-12
佛山市三水日邦化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the viscosity and other properties of novolak epoxy resin hot melt adhesives are increasingly unable to meet the needs of the market

Method used

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  • Modified novolac epoxy resin hot melt adhesive
  • Modified novolac epoxy resin hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A modified phenolic epoxy resin hot melt adhesive, the raw materials of which include by weight: 2 parts of phenolic epoxy resin, 20 parts of polyurethane resin, 2.8 parts of lapis lazuli powder, 5 parts of compound oil, 2 parts of microcrystalline wax, phthalate 0.9 parts of di-n-nonyl dicarboxylate, 1.3 parts of benzoin, 2.5 parts of antioxidant BHT, and 3.5 parts of bauxite.

Embodiment 2

[0018] A modified phenolic epoxy resin hot melt adhesive, the raw materials of which include by weight: 60 parts of phenolic epoxy resin, 1.2 parts of polyurethane resin, 12 parts of lapis lazuli powder, 1.5 parts of compound oil, 6 parts of microcrystalline wax, phthalate 0.2 part of di-n-nonyl dicarboxylate, 4.7 parts of benzoin, 0.1 part of antioxidant BHT, 10 parts of bauxite;

[0019] Wherein, the novolac epoxy resin is a modified novolac epoxy resin; the preparation method of the modified novolac epoxy resin is: mixing novolak epoxy resin and α-methylcinnamaldehyde solution, heating up to 70°C, The reaction was carried out for 2.5 h under vacuum stirring to obtain a modified novolac epoxy resin.

Embodiment 3

[0021] A modified phenolic epoxy resin hot melt adhesive, the raw materials of which include by weight: 5 parts of phenolic epoxy resin, 15 parts of polyurethane resin, 3 parts of lapis lazuli powder, 4.5 parts of compound oil, 3 parts of microcrystalline wax, o-benzene 0.8 parts of di-n-nonyl dicarboxylate, 1.5 parts of benzoin, 2.1 parts of antioxidant BHT, 4.5 parts of bauxite;

[0022] Wherein, the novolac epoxy resin is a modified novolac epoxy resin; the preparation method of the modified novolac epoxy resin is: mixing the novolac epoxy resin and α-methyl cinnamaldehyde solution evenly, heating up to 85°C, Reaction 2h under vacuum stirring, obtains modified novolac epoxy resin;

[0023] The solvent of the α-methylcinnamaldehyde solution is ethanol.

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PUM

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Abstract

The invention discloses a modified novolac epoxy resin hot melt adhesive. The modified novolac epoxy resin hot melt adhesive comprises the following components in parts by weight: 2-60 parts of novolac epoxy resin, 1.2-20 parts of polyurethane resin, 2.8-12 parts of celestine powder, 1.5-5 parts of compound oil, 2-6 parts of microcrystalline wax, 0.2-0.9 parts of dinonyl ortho-phthalate, 1.3-4.7 parts of benzoin, 0.1-2.5 parts of an anti-oxidant BHT, and 3.5-10 parts of bauxitic clay. The modified novolac epoxy resin hot melt adhesive has high viscosity, excellent initial adhesive force, constant adhesive force, and dissolvability.

Description

technical field [0001] The invention relates to the field of hot melt adhesives, in particular to a modified phenolic epoxy resin hot melt adhesive. Background technique [0002] Novolac epoxy resin is also called F-type epoxy resin. In acidic medium, phenol and formaldehyde undergo polycondensation reaction to obtain novolac resin, and then polycondensate with excess propylene oxide in the presence of sodium hydroxide. It has high epoxy group content, high viscosity, high cross-linking density after curing, and its fiber-reinforced plastic has good physical and mechanical properties. Heat resistance is higher than E-type epoxy resin. It is mainly used to make various structural parts and electrical components. [0003] Nowadays, the viscosity and other properties of novolac epoxy hot melt adhesives are increasingly unable to meet the needs of the market. Contents of the invention [0004] Based on the technical problems existing in the background technology, the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J163/04C09J191/00C09J11/04C09J11/06C09J11/08
CPCC08K2003/2227C08K2003/3045C08L2201/08C08L2205/02C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J163/04C09J175/04C08L63/04C08L91/00C08L91/06C08K13/02C08K5/12C08K3/30C08K3/22C08L75/04
Inventor 朱同武朱立芳
Owner 佛山市三水日邦化工有限公司
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