A modified thermosetting ultra-polymer epoxy resin marine board

An epoxy resin and ultra-high polymer technology, applied in the field of modified polymer sheet manufacturing, can solve the problems of uneven strength, failure to meet strength requirements, backward technology, etc., to avoid linear expansion coefficient, excellent mechanical properties, density uniform effect

Inactive Publication Date: 2017-05-10
严小异
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the chain molecular structure of thermoplastic resin, many molecular chains are combined together by physical action. Due to the limitation of its process, the amount of residual low molecular solvent in the drying process cannot be guaranteed to overflow completely. The arrangement is not uniform, and the residual solvent cannot escape completely, resulting in uneven strength per unit area. There are bubbles in it, which cannot guarantee the consistency of material strength and quality, making this composite material unable to be used in some special high-demand products such as rail fasteners. , automotive gearboxes, pressure vessels, ship plates, armor protection, etc. to replace existing metal materials
[0004] The epoxy resin hand lay-up process currently used for composite materials, due to the backward process, the resin content cannot be accurately controlled, and the quality cannot be guaranteed. In addition, it uses ordinary epoxy resin and curing crosslinking agent, which cannot meet the requirements of replacing metal materials. strength requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: a kind of modified thermosetting ultra-high polymer epoxy resin marine board is characterized in that the modified thermosetting epoxy resin containing 12-18% by weight, the hyperbranched curing cross-linking agent of 4-6% by weight, 60-86% by weight of fibrous reinforcement, 5.5-8.5% by weight of powder reinforcement additive.

[0014] The modified thermosetting epoxy resin contains 14-16% (14% or 14.8% or 15% or 15.5% or 16%) of bisphenol A epoxy resin and 0.15-0.25% (0.15% or 0.2% or 0.25%) by weight of polyether-modified methyltetrahydrophthalic anhydride toughener; the 14-16% by weight of bisphenol A epoxy resin is composed of E-51 epoxy resin and E-44 ring Oxygen resin is formed in a ratio of 2:1; the hyperbranched imidazole amidated derivative curing agent is made of trimethylolpropane 15-20% (15% or 16% or 17% or 18% or 19% or 20%), 2,2-dimethylolpropionic acid 15-21% (15% or 16% or 17% or 18% or 19% or 20% or 21%), dioxane 13-17% (13 % or 14% or...

Embodiment 2

[0018] Embodiment 2: On the basis of embodiment 1, the modified thermosetting epoxy resin containing 15% by weight, the hyperbranched curing crosslinking agent of 5% by weight, the fibrous reinforcing material of 73% by weight, 7% by weight powder reinforcement additives.

Embodiment 3

[0019] Embodiment 3: On the basis of embodiment 1 or 2, a kind of modified thermosetting ultra-high polymer epoxy resin marine plate preparation method, the modified thermosetting epoxy resin of 12-18% by weight and 5.5-8.5% by weight Mix and grind 100% powder reinforcement material additives into a uniform slurry, add 4-6% by weight hyperbranched curing cross-linking agent in proportion, stir evenly, and then soak quantitative 60-86% by weight fiber reinforcement material Thick paste or paste prepreg with a viscosity of 50000-100000Pa.S, then put the prepreg in a heated mold, apply a pressure of more than 1000KN after exhausting, control the temperature at 165-175°C, after 3 -6 minutes of secondary curing to obtain a finished high-strength thermosetting polymer-based composite material. The modified thermosetting ultra-high polymer epoxy resin marine plate is made into a high-strength composite material through the molding methods of pultrusion, molding, lamination, transfer ...

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Abstract

The invention relates to a modified thermosetting ultrahigh-molecular epoxy resin composite material which is good in corrosion resistance and weather resistance and high in strength, wherein the performance of the composite material can conform to that of low-carbon steel (such as strength requirement on a steel workpiece Q235 specified by GB / T700-1988Q235). The modified thermosetting ultrahigh-molecular epoxy resin composite material comprises the following components by weight percent: 12-18% of modified thermosetting epoxy resin, 4-6% of hyperbranched solidifying cross-linking agent, 60-86% of fibrous reinforcing materials and 5.5-8.5% of powdered reinforcing material additive. The modified thermosetting ultrahigh-molecular epoxy resin composite material has the advantages that a molecular structure not only contains a large quantity of flexible chain sections to buffer brittleness and hardness of epoxy resin, but also contains an end-capped epoxy group which can participate in curing reaction, and the toughening effect is obvious, so that not only is the bonding strength of a system improved, but also the compression strength and the shearing strength of the materials are improved greatly.

Description

technical field [0001] The invention relates to a modified thermosetting ultra-high polymer epoxy resin marine plate with good corrosion resistance, good weather resistance, high strength, and performance reaching low carbon steel (such as the strength requirements of Q235 steel workpieces specified in GB / T700-1988Q235). It belongs to the field of manufacturing modified polymer plates. Background technique [0002] As a new type of material, composite material has good insulation and strength, and can be made into various shapes according to different requirements, different processes and molds. With the advancement and development of science and technology, the demand for composite materials is also increasing. In order to achieve the dual characteristics of insulation and high strength, existing composite materials and some special composite materials are obtained by compounding metal and nylon plastics (so-called composite metal materials), but due to the line between me...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L63/02C08L71/00C08G59/62C08K13/04C08K7/14C08K7/06C08K7/10C08K7/24C08K3/04C08K3/34
Inventor高原
Owner严小异