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High-corrosion-resistance thermosetting resin composition and application thereof

A resin composition, corrosion-resistant technology, applied in layered products, metal layered products, chemical instruments and methods, etc., can solve the problems of poor toughness, low cross-linking density, brittle material, etc., and achieve high glass transition Effect of temperature, crosslinking density improvement, and high heat resistance

Active Publication Date: 2017-09-29
杭州中一科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, bifunctional (such as bisphenol A type) benzoxazine is a relatively common high-performance material, but due to the characteristics of the molecular structure itself, the crosslinking density of the system is still low, the material is brittle, and the toughness is poor

Method used

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  • High-corrosion-resistance thermosetting resin composition and application thereof
  • High-corrosion-resistance thermosetting resin composition and application thereof
  • High-corrosion-resistance thermosetting resin composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: prepare thermosetting resin composition

[0042] The thermosetting resin composition comprises the following components: 80g liquid novolac epoxy resin (F51), 20g triphenol type benzoxazine resin, 5g liquid polysulfide rubber (LP-3) and 1.5g 2-methyl-4-ethane Kimidazole.

[0043] The structural formula of triphenol type benzoxazine resin is as follows:

[0044]

[0045] The preparation method of thermosetting resin composition is as follows:

[0046] Step 1: first weigh liquid epoxy resin, triphenol type benzoxazine resin, toughening agent and curing accelerator in proportion;

[0047] Step 2: Then put the triphenol-type benzoxazine resin into the mixing tank, then add liquid epoxy resin and toughening agent into the mixing tank, raise the temperature of the mixing tank to 80°C, and stir until it is uniform and transparent. Form a resin mixture;

[0048] Step 3: After the above resin mixture is cooled to room temperature, add a curing accelerator.

Embodiment 2

[0049] Embodiment 2: Preparation of thermosetting resin composition

[0050] Prepare with reference to Example 1, the difference is that the components and raw materials are different.

[0051] The thermosetting resin composition includes the following components: 90g liquid bisphenol A epoxy resin (E44), 10g triphenol type benzoxazine resin, 2g liquid nitrile 40 rubber and 1g imidazole.

[0052] The structural formula of triphenol type benzoxazine resin is as follows:

[0053]

Embodiment 3

[0054] Embodiment 3: prepare thermosetting resin composition

[0055] Prepare with reference to Example 1, the difference is that the components and raw materials are different.

[0056] The thermosetting resin composition includes the following components: 100g of glycidylamine epoxy resin (AG-80), 15g of triphenol-type benzoxazine resin, 10g of liquid carboxy-terminated nitrile rubber and 2.5g of 2-phenylimidazole.

[0057] The structural formula of triphenol type benzoxazine resin is as follows:

[0058]

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Abstract

The invention relates to a high-corrosion-resistance thermosetting resin composition. The high-corrosion-resistance thermosetting resin composition contains the following components in parts by weight: 60-100 parts of liquid epoxy resin, 1-40 parts of triphenol benzoxazine resin, 0.1-10 parts of a flexibilizer and 0.1-2.5 parts of a curing accelerator. By replacing bisphenol benzoxazine resin of the high-corrosion-resistance thermosetting resin composition with triphenol benzoxazine resin, the cross-linking density of a system is further increased.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a highly corrosion-resistant thermosetting resin composition and its application. Background technique [0002] Benzoxazine is a new type of thermosetting resin, which is generally prepared by condensation reaction of phenolic compounds, primary amine compounds and paraformaldehyde. Under the action of heating and / or a catalyst, benzoxazine undergoes ring-opening polymerization to form a nitrogen-containing network structure similar to phenolic resin. [0003] Polybenzoxazine resin has excellent thermal stability, low water absorption, nearly zero shrinkage during curing, and no small molecule release. It also has the flame retardancy of phenolic resin and better mechanical properties than epoxy resin. Good application prospects. [0004] However, compared with common thermosetting resins, although benzoxazine resins have higher glass transition temperature and modulu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L61/34C08L81/04C08L9/02C08L13/00C08L75/04C08K9/06C08K7/14C08K9/04C08K3/38C08K3/36C08J5/24B32B15/092B32B15/20
Inventor 方仕江王越
Owner 杭州中一科技有限公司