The binder composition for a laminated insulating material

 

(57) Abstract:

Usage: obtain fire-resistant foil-coated fiberglass. The inventive composition to obtain a fire-resistant, durable and has high insulating properties of laminated plastics contains, by weight. including epoxy Dianova resin 100; a mixture of 4,4-diaminodiphenylsulfone and 4.4-diaminodiphenylsulfone in the ratio from 1 2 to 1 3 16,5 8,8; glycolate, arsenic (III) in the form of 40 90% solution in ethylene glycol or acetone, toluene, ethyl cellosolve, dioxane 5,2 50,0; an organic solvent 125,0 195,0. 1 C.p. f-crystals, 2 tab.

The invention relates to the field of production of epoxy binder for non-combustible (flame retardant) insulating laminates, mostly foiled glass-reinforced plastics used in electronics, electrical engineering, electronic engineering and other technical fields that require non-combustible materials.

Known composition of epoxy resin to obtain a reinforced materials, mainly folgero - EN dielectrics, comprising, by weight. including epoxy Dianova resin (EM-20, EM-8, EM-22) 76-89, hardeners organic polyamine diaminodiphenylsulfone) 120-150 [1]

Known composition enables the production of a material with good electrical and mechanical properties: strength adhesive foil with base dielectric 135aboutC and 15 h 400-420 kg/cm2specific volume resistivity of 2.3 1015Ohm-cm surface resistivity of 2.2 1016Ohms, but this material is not a fire-resistant materials.

Closest to the technical essence and the achieved result to the invention is a composition of epoxy resin for the production of dielectric laminate comprising epoxy Dianova the resin ED-20 ED-8 and others) 100 wt.h. hardeners (a mixture of aromatic diamines) a mixture of 4,4'-diaminodiphenylmethane and 4,4'-diminutive - Nursultan in the ratio from 1:2 to 1:3 20,09-21,45 wt.h. fire retardant (flame retardant additive) tetrabromodiphenylether (TRIP) to 54.4 wt.h. organic solvents, the amount of which is determined by the technological parameters of the composition for the desired degree of impregnation of glass [2]

Major drawbacks of this arrangement are:

the resistance of the dielectric on the basis of this song is not below 16, and the modern requirements of IEC EBITDA should not accepts>/P>fire retardant TRIP is scarce product.

The aim of the invention is to increase the fire resistance, strength and insulating properties of the material.

This objective is achieved in that the binder composition for a laminated insulating material including epoxy Dianova resin, a mixture of 4,4'-diaminodiphenylmethane and 4,4'-diaminodiphenylsulfone in the ratio from 1: 2 to 1:5, a flame retardant and an organic solvent, contains as flame glycolate, arsenic (III) in the form of 40-90% solution in ethylene glycol or acetone, toluene, ethyl cellosolve, dioxane in the following ratio, wt.h.

Epoxy Dianova resin 100,0

A mixture of 4,4'-diamino-

difenilmetana and 4,4'-

diaminoanisole-

background in the ratio from 1:2 to 1:3 8,8-16,5

The glycolate of arsenic (III)

as 40-90%

solution in etrange-

stake or acetone, then

Loule, ethyl cellosolve, dioxane 5,2-50,0

Organic Rast - varicel 125,0-195,0

The binder composition may optionally contain tetrabromdifenilolpropan in the amount of 3-5 wt.h. on 100 wt.h. epoxy resin to enhance Flammability (fire resistance) of the material.

As pomposity for fiberglass, such as ED-20 ED-8, ED-16, ED-10, ED-14 (GOST 10587-76).

As the organic solvent in the composition is also used various organic solvents, such as, for example, acetone, toluene, ethyl alcohol and other alone, and mixtures thereof. Used as a flame retardant glycolate, arsenic (III) in the form of a solution in an organic solvent (ethylene glycol, acetone, toluene, ethyl cellosolve, dioxane) is produced by the reaction of interaction of arsenious anhydride with a glycol (ethylene glycol) in a ratio of 1:1 or 1:2, followed by dissolving the obtained glycolate, arsenic (III) in one of the above organic solvent to obtain 40-90% -aqueous solution. To obtain glycolate, arsenic (III) use as a pure technical arsenous anhydride, and arsenous anhydride in the form of various different waste steel production, containing significant amounts of arsenic in the form of oxide, such as arsenic dust generated during the cleaning process gases metallurgical plants, the electrostatic dust (TU 48-0222-12-78. ARSENICAL dust). The latter contains >50% As and <2 Sn, as well as a small amount of Fe, Cu, S, Mn, Ti, Ni in the form of oxides. avago color without specific odor.

P R I m e R 1. 100.0 wt.h. epoxy Dianova resin ED-20 is dissolved in an organic solvent (a blend of acetone, toluene and ethyl alcohol). In the resulting solution is injected to 9.5 wt. including a mixture of 4,4'-diaminodiphenylmethane with 4,4'-diaminodiphenylsulfone in the ratio 1:2. Later in the solution is injected 20 wt.h. flame retardant 40%-aqueous solution glycolate, arsenic (III) in ethylene glycol.

The obtained composition of epoxy resin impregnated fiberglass brand e-1-1-100 18. The fiberglass dried at 100-110aboutC for 5-10 minutes Impregnated fabric (prepreg) is cut into sheets will be collected in a package, faced on one or both sides of the copper electrolytic galvanostatic foil is pressed.

Mode pressing: exposure at specific pressure of 5 kg/cm2and the temperature of 170aboutWith 10-15 mm, and at a specific pressure of 30 kg/cm2and the temperature of 170aboutWith 90 minutes

P R I m e R s 2-8. Summarized in table. 1 and illustrate the invention with different ratios of components.

Thus, the use as flame retardant glycolate, arsenic (III) in the form of a solution in an organic solvent selected from the group comprising ethylene glycol, acetone, toluene, ethyl cellosolve, dioxane (40-90% solution) pozvolna contributes to its cheaper.

In table. 2 presents data on the properties of foiled dielectrics made using a binder according to the invention. The composition itself has the vitality 10-15 minutes at 170aboutC and at room temperature for up to 15 days.

With the introduction of the binding of additional flame retardant of tetrabromdifenilolpropan in these quantities have the material strength and insulating properties similar to those listed in the table. 2 for examples 3-8 invention, without this additive, however, the resistance of the material increases.

1. The BINDER COMPOSITION FOR a LAMINATED INSULATING MATERIAL including epoxy Dianova resin, a mixture of 4,4-diaminodiphenylmethane and 4,4-diaminodiphenylsulfone in the ratio from 1:2 to 1:3, a flame retardant and an organic solvent, characterized in that it contains as flame glycolate arsenic III the product of the interaction of arsenious anhydride with ethylene glycol in the ratio of 1:1 in the form of 40-90% solution in ethylene glycol or acetone, toluene, ethyl cellosolve, dioxane in the following ratio, wt.h.

Epoxy Dianova resin 100,0

A mixture of 4,4-diaminodiphenylmethane and 4,4-diaminodiphenyl acetone, toluene, ethyl cellosolve, dioxane 5,2 50,0

Organic solvent 125,0 195,0

2. The composition according to p. 1, characterized in that it further comprises tetrabromdifenilolpropan in the amount of 3-5 wt.h. on 100 wt.h. epoxy Dianova resin.

 

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