CN101402839A - Adhesion agent for aluminum cellular composite board and method of producing the same - Google Patents

Abstract

The invention relates to a glue adhesive used for an aluminum beehive composite board and a preparation method thereof; wherein, the glue adhesive consists of a component A and a component B; the weight percentage composition of the materials of the component A is as follows: 45 to 55 percent of epoxide resin, 2 to 5 percent of thinner, 30 to 42 percent of functional pigment filler, 1.5 to 2.5 percent of KH-560 coupling agent, 6 to 20 percent of kiss toughening agent and 2 to 3 percent of thickening and anti-sinking agent of gas phased silicon dioxide; the weight percentage composition of the materials of the component B is as follows: 60 to 80 percent of phenolic aldehyde modified amine curing agent, 8 to 15 percent of curing accelerator and 10 to 20 percent of plasticizer; and both the weight percentage sum of the materials of the component A and the weight percentage sum of the materials of the component B are 100 percent. The glue adhesive used for the aluminum beehive composite board has the advantages of normal temperature curing, good acid and alkaline resistance, low curing retraction rate, no pollution, high sticking intensity after curing, higher temperature resistance and lower price.

Description

A kind of adhesion agent for aluminum cellular composite board and preparation method thereof

Technical field:

The present invention relates to the Chemicals adhesive area, relate in particular to composition boards such as a kind of aluminium honeycomb core and aluminium, glass reinforced plastic, calcium silicate board with microporous and stick with glue agent and preparation method thereof.

Technical background:

In recent years, the application of perforated plate composite structure in aerospace and construction and decoration more and more widely, honeycomb composite plate not only has magnificent outward appearance, and have in light weight, intensity is high, the characteristics of acoustic insulation shock-proof.Therefore being used for the glue of bonding honeycomb core and panel also becomes more and more important, a lot of enterprises come bonding with tackiness agent such as unsaturated polyester, urethane, but all occur a lot of defectives in the compound process: the unsaturated polyester type tackiness agent is not ageing-resistant, and bonding strength promptly begins to reduce after the some months; And the unsaturated polyester adhesive curing is rapid, and several minutes is promptly finished curing, so impregnation and the bad control of gluing, the actually operating difficulty; The unsaturated polyester tackiness agent also contains certain amount of solvent, and solvent evaporates can be brought toxicity and pungency, and solvent evaporates can cause volumetric shrinkage simultaneously, can cause big string stress during cure shrinkage, influences the bonding strength of matrix material.Solvent-free polyurethane adhesive is non-refractory then, and general use temperature is-40 ℃-70 ℃, and resistance to boiling water is poor, and honeycomb planar stretch cohesive strength and stripping strength are all lower, can not be applied to the occasion that bonding strength is had relatively high expectations, and price are higher.Therefore the perforated plate industry is badly in need of a kind of various performance and is all satisfied honeycomb composite demand and the more cheap tackiness agent of price.

Summary of the invention:

The objective of the invention is to overcome the deficiency of above tackiness agent, provide a kind of ambient cure, resistance to acids and bases good, cure shrinkage is low, pollution-free, solidify back bonding strength height, ability comparatively high temps and the lower adhesion agent for aluminum cellular composite board of price.

The present invention for the technical scheme that solves above technical problem and take is: a kind of adhesion agent for aluminum cellular composite board, it is made of the two components of A, B, and the weight percentage of A component raw material consists of Resins, epoxy 45-55%, thinner 2-5%, functional color stuffing 30-42%, KH-560 coupling agent 1.5-2.5%, strange scholar's toughner 6-20%, thickening anti-settling agent aerosil 2-3%; The weight percentage of B component raw material consists of phenol aldehyde modified amine curing agent 60-80%, curing catalyst 8-15%, softening agent 10-20%.A, B two components the weight percentage sum of raw material separately are 100%.

Above-mentioned aluminium honeycomb composite plate epoxy glue, the Resins, epoxy in the described A component are liquid bisphenol A type epoxy resin during for room temperature.

Above-mentioned adhesion agent for aluminum cellular composite board, described liquid bisphenol A type Resins, epoxy is E-44 Resins, epoxy, CYD-128 Resins, epoxy or their mixture.

Above-mentioned adhesion agent for aluminum cellular composite board, the functional color stuffing in the described A component is the mixture of drying-type silica powder, talcum powder, needle shape wollastonite powder, zinc sulfide white.

Above-mentioned adhesion agent for aluminum cellular composite board, toughner in the described A component is strange scholar's toughner, it can dissolve each other with bisphenol A type epoxy resin, and can make cured article form the epoxy alloy with " island structure ", thereby several times improve fracture toughness property and bonding strength.

The preparation method of tackiness agent is:

The preparation of A component: the toughner that will account for coupling agent, the 6-20% of reactive thinner, the 1.5-2.5% of bisphenol A type epoxy resin, the 2-5% of weight part 45-55% earlier adds in the high speed dispersor and stirs, the functional color stuffing that adds 30-42% again, dispersed with stirring is even, the thickening material that adds 2-3% is at last regulated viscosity, carrying out vacuum defoamation after material all stirs handles, discharging, packing promptly gets A component finished product;

The preparation of B component: will account for the solidifying agent of weight part 60-80%, the curing catalyst of 8-15%, the softening agent of 10-20% adds in the stirrer respectively and stirs, filters, and discharging, packing promptly gets B component finished product.

Adhesion agent for aluminum cellular composite board of the present invention, in the A component, added strange scholar's toughner QS-BC, it is the malleableize properties-correcting agent that is exclusively used in Resins, epoxy and phenol aldehyde modified amine system, it can dissolve each other with Resins, epoxy, and in solidification process, can form epoxy alloy with " island structure ", thereby several times improve fracture toughness property, increase substantially bonding strength.Simultaneously,, introduce benzene ring structure in the molecule, improved the resistance toheat of cured article because of solidifying agent is phenol aldehyde modified amine.Common toughner can reduce the thermotolerance of cured article, and the adding of QS-BC can keep the cured article higher heat resistance, makes it to use in-40 ℃～140 ℃ scopes.Therefore compare with common epoxy glue, the bonding strength of aluminium honeycomb composite epoxy glue of the present invention improves, and resistance toheat improves.Simultaneously, functional color stuffing such as needle shape wollastonite powder, platy talc are mixed use with the granular quartz powder, and particle diameter difference, can realize the tightst piling up between particle, the performance of each filler grain can be complementary, thereby play the thermal stresses in enhancings, toughness reinforcing, the reduction curable adhesive layer process and the effect of volumetric shrinkage.Compare with liquid nbr carboxyl terminal toughening modifying epoxy glue, the preparation technology of the composite epoxy glue among the present invention is simple, toughner and Resins, epoxy can any mixed, and do not need and the Resins, epoxy pre-reaction, shortened the process time, simultaneously, have big cost advantage because cost of material is cheap, and its honeycomb planar stretch bonding strength and stripping strength indifference almost.

The invention will be further described below in conjunction with embodiment:

Embodiment:

In high speed dispersor, add 26% E-44 Resins, epoxy, 26% CYD-128 Resins, epoxy, 3% reactive thinner, 2% KH560 coupling agent, strange scholar's toughner of 8% by weight, stirred 10 minutes, add 24% silica powder, 5% needle shape wollastonite powder, 2.5% talcum powder, 1.5% zinc sulfide white again, dispersed with stirring 30 minutes, add 2% aerosil, the even final vacuum deaeration of dispersed with stirring 20 minutes at last.Filter discharging and promptly get 100 parts of A components.

In reactor, add 75% modified phenolic amine hardener, 10% amine curing catalyst, 15% softening agent, stirred 30 minutes, filter discharging and promptly get 100 parts of B components.

Aluminium honeycomb composite adhesive of the present invention in use, by weight with 5 parts of A components, the B component weighs up for 1 part, mix, blade coating or roller coating on the bonding panel assemble honeycomb in treating, exert pressure, be about to treat that bonding panel and honeycomb core bond together securely after the composite gum reaction is solidified.

Claims (6)

1, a kind of adhesion agent for aluminum cellular composite board, be made of A, B two components, it is characterized in that: the weight percentage of A component raw material consists of Resins, epoxy 45-55%, thinner 2-5%, functional color stuffing 30-42%, KH-560 coupling agent 1.5-2.5%, strange scholar's toughner 6-20%, thickening anti-settling agent aerosil 2-3%; The weight percentage of B component raw material consists of phenol aldehyde modified amine curing agent 60-80%, curing catalyst 8-15%, softening agent 10-20%.A, B two components the weight percentage sum of raw material separately are 100%.

2, aluminium honeycomb composite plate epoxy glue according to claim 1 is characterized in that: the Resins, epoxy in the described A component is liquid bisphenol A type epoxy resin during for room temperature.

3, adhesion agent for aluminum cellular composite board according to claim 2 is characterized in that: described liquid bisphenol A type Resins, epoxy is E-44 Resins, epoxy, CYD-128 Resins, epoxy or their mixture.

4, adhesion agent for aluminum cellular composite board according to claim 1 is characterized in that: the functional color stuffing in the described A component is the mixture of drying-type silica powder, talcum powder, needle shape wollastonite powder, zinc sulfide white.

5, adhesion agent for aluminum cellular composite board according to claim 1, it is characterized in that: the toughner in the described A component is strange scholar's toughner, it can dissolve each other with bisphenol A type epoxy resin, and can make cured article form epoxy alloy, thereby several times improve fracture toughness property and bonding strength with " island structure ".

6, a kind of preparation method as claimed in claim 1 is characterized in that:

The preparation of A component: the toughner that will account for coupling agent, the 6-20% of reactive thinner, the 1.5-2.5% of bisphenol A type epoxy resin, the 2-5% of weight part 45-55% earlier adds in the high speed dispersor and stirs, the functional color stuffing that adds 30-42% again, dispersed with stirring is even, the thickening material that adds 2-3% is at last regulated viscosity, carrying out vacuum defoamation after material all stirs handles, discharging, packing promptly gets A component finished product;

The preparation of B component: will account for the solidifying agent of weight part 60-80%, the curing catalyst of 8-15%, the softening agent of 10-20% adds in the stirrer respectively and stirs, filters, and discharging, packing promptly gets B component finished product.