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Bismaleimide resin-based corrosion inhibiting primer and preparation method thereof

A bismaleimide resin, maleimide resin technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc. Poor epoxy primer and other problems, to achieve the effect of high bonding reliability, long storage period and improved toughness

Active Publication Date: 2015-11-11
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of poor moisture and heat aging resistance and mismatch between epoxy-type primer and double-maleimide film when the bismaleimide adhesive film is bonded to metal.

Method used

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  • Bismaleimide resin-based corrosion inhibiting primer and preparation method thereof
  • Bismaleimide resin-based corrosion inhibiting primer and preparation method thereof
  • Bismaleimide resin-based corrosion inhibiting primer and preparation method thereof

Examples

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specific Embodiment approach 1

[0032] Specific embodiment 1: In this embodiment, a bismaleimide resin-based corrosion-inhibiting primer is made of 5-10 parts by weight of bismaleimide resin-based corrosion-inhibiting primer. It is composed of imine resin, 2-8 parts of chain extension copolymerization modifier, 2-8 parts of toughening modifier, 0.1-0.5 part of coupling agent, 0.1-0.5 part of corrosion inhibitor and 75-100 parts of solvent.

specific Embodiment approach 2

[0033] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the bismaleimide resin-based corrosion-inhibiting primer is composed of 5-8 parts by weight of bismaleimide resin, 2- It consists of 5 parts of chain extension copolymerization modifier, 2-5 parts of toughening modifier, 0.1-0.4 parts of coupling agent, 0.1-0.4 parts of corrosion inhibitor and 80-100 parts of solvent. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the chain extension copolymerization method modifier is composed of allyl cresol, allyl etherified phenolic novolac, diallyl bisphenol A and diene One or several kinds of propyl bisphenol S are composed in proportion. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to corrosion inhibiting primer and a preparation method thereof, in particular to bismaleimide resin-based corrosion inhibiting primer and a preparation method thereof, and aims to solve the problems that when metal is bonded through a bismaleimide adhesive film, the damp-heat ageing resisting performance is poor, and epoxy primer is not matched with the bismaleimide adhesive film. The bismaleimide resin-based corrosion inhibiting primer is composed of bismaleimide resin, chain extension copolymerization modifier, toughening modifier, coupling agents, corrosion restraining agents and solvents. The preparation method comprises the steps that toughening particles and the chain extension copolymerization modifier are ground on a three-roller grinder, and the toughening resin is obtained; the toughening resin and the bismaleimide resin are copolymerized at the temperature of 135 DEG C to 140 DEG C to obtain toughened bismaleimide primer body resin, and the toughened bismaleimide primer body resin is cooled for use; the primer body resin, the coupling agents and the corrosion restraining agents are dissolved in the solvents, and mixed and stirred evenly in a closed stirring device. The primer is mainly used for bonding or co-bonding between metal products or between composites and the metal products.

Description

technical field [0001] The invention relates to a corrosion-inhibiting primer and a preparation method thereof. Background technique [0002] Adhesive primer is a kind of glue that is used to spray on the surface of the substrate to be bonded before the metal structural parts are bonded, and is used together with the adhesive to bond the structural parts. The purpose of using the primer is ① when the metal parts cannot be bonded immediately after the surface treatment, the primer can prevent the metal surface from being polluted or oxidized again; Adhesive bonding system can increase the durability and resistance to heat and humidity of metal bonding parts; ③In addition, the primer has good wettability on the metal surface, forming a transition layer between the metal and the adhesive film, which can effectively enhance the bonding between the adhesive film and the metal substrate. Adhesion, can improve the bonding strength. At present, a variety of epoxy primers have been...

Claims

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Application Information

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IPC IPC(8): C09J179/08C09J11/08C09J11/04
Inventor 李洪峰曲春艳王德志冯浩杨海冬宿凯刘长威肖万宝张杨王海民
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI