Polymeric binder for composite materials

 

(57) Abstract:

The invention relates to the production of a polymeric binder for composite materials used in engineering, aviation and other industries. Describes a polymeric binder comprising an epoxy resin, a curing agent and an additive, the additive contains Tetra-4-carboxylation or copper Tetra-4-aminofluorene copper, and as a hardener - rezol phenol-formaldehyde resin SF 341 And in the following ratio, wt.h.: epoxy resin 95 - 105; phenol-formaldehyde resin SF A (hardener) 65 - 75; specified phthalocyanine 0,9 - 1,1. The technical result - the development of a polymeric binder with high heat resistance and heat stability. table 1.

The invention relates to the field of polymeric binders for composite materials used in engineering, aviation and other industries.

Known polymeric binder for fire-resistant fiberglass, including epoxy Dianova resin, brosterhous epoxy resin and hardener - diaminodiphenylmethane /Prospectus of the company "Dow Chemical" 1975/. The disadvantage of this binder - low Ter is vathouse, includes epoxy resin (a mixture Dianov and bromoderma resins), curing agent (phenol resin) and optionally aminophenol /Belikov, A. M. and others Ed. St. N 730753 [USSR], B. I., 1980, No. 16/. The disadvantage of such binders are relatively low values of heat resistance and thermal stability.

The objective of the invention is to develop a polymeric binder with high heat resistance and heat stability.

This object is achieved in that the polymeric binder comprising an epoxy resin, a curing agent and an additive, the additive contains Tetra-4-carboxylation or copper Tetra-4-aminofluorene copper in the following ratio, wt.h.:

Epoxy resin - 95 - 105

Phenol-formaldehyde resin SF A (hardener) - 65 - 75

These phthalocyanines - 0,9 - 1,1

The use of the proposed binder allows you to increase thermal stability and thermal stability while maintaining fire-resistance rating with the exception of bromoderma epoxy resin, which simplifies the formulation and preparation technology of composite materials, since having bromoderma epoxy resin due to some of its physico-chemical properties creates significant Tlisova:

epoxy Dianova resin ED-20 (GOST 10487-84) General formula

< / BR>
The content of epoxy groups of 20 - 22%.

epoxy alkylresorcinol resin ARAM-2-20 (TU 38.309.101-87) of General formula

< / BR>
The content of epoxy groups 19 - 20%.

- chlorinated aliphatic epoxy resin Oxilan-6 (TU 6-02-1376-87) General formula

< / BR>
The content of epoxy groups of 7 - 8%.

Example 1.

To obtain a polymeric binder to prepare a 50% solution in a mixture of ethanol-acetone (1:1) of the following composition, wt.h.:

epoxy resin ED-20 - 95

phenol-formaldehyde resin SF A (hardener) - 65

Tetra-4-carboxylation copper - 0,9

The obtained solution on a laboratory impregnating installation impregnated with synthetic fiber and dried in air for 15 minutes. Then spend the curing taut in a heating Cabinet mode: when the 70oC - 30 min, 100oC - 60 min, 130oC - 60 min, 160oC - 120 minutes

Example 1 A.

To obtain the polymeric binder of the same composition as additives use of Tetra-4-aminofluorene copper.

Example 2.

To obtain a polymeric binder to prepare a 50% solution in a mixture of ethanol-acetone (1:1) trail is R>
Tetra-4-carboxylation copper - 1,1

The obtained solution on a laboratory impregnating installation impregnated with synthetic fiber and dried in air for 15 minutes. Then spend the curing taut in a heating Cabinet mode: when the 70oC - 30 min, 100oC - 60 min, 130oC - 60 min, 160oC - 120 minutes

Example 2 A.

To obtain the polymeric binder of the same composition as additives use of Tetra-4-aminofluorene copper.

Example 2 b.

To obtain the polymeric binder of the same composition as the epoxy resin used epoxy alkylresorcinol the resin ARAM-2-20, but as a Supplement-Tetra-4-carboxylation copper.

Example 2 century.

To obtain the polymeric binder of the same composition as the epoxy resin used chlorinated aliphatic epoxy resin, Oxilan-6, and as an additive - Tetra-4-carboxylation copper.

Example 3.

To obtain a polymeric binder to prepare a 50% solution in a mixture of ethanol-acetone (1:1) of the following composition, wt.h.:

epoxy resin ED-20 - 100

phenol-formaldehyde resin SF A (hardener) - 70

Tetra-4-carbox the CTA and dried in air for 15 minutes. Then spend the curing taut in a heating Cabinet mode: when the 70oC - 30 min, 100oC - 60 min, 130oC - 60 min, 160oC - 120 minutes

Example 3 A.

To obtain the polymeric binder of the same composition as additives use of Tetra-4-aminofluorene copper.

The resistance is determined on derivatograph system Paulik, Paulik, Erdei (Hungary). The heating rate of the samples in air 5o/min. Temperature determined by the temperature of the beginning of mass loss (0,8%).

Thermostability. Samples kept in a heating Cabinet at 200oC for 12 hours. Then measure the strength and elongation on the dynamometer RM-30-1 when the clamping length of 10 cm and a speed of 300 mm/min.

The test results of the compositions in comparison with the prototype shown in the table.

The application of the proposed polymeric binder allows you to ensure economic benefits by improving the operational properties of the composites, due to the high heat resistance and heat stability.

In addition, the use of this polymeric binder allows you to get colored composition the I composite materials, include epoxy resin, phenol resin as a curing agent and an additive, characterized in that it contains rezol phenol-formaldehyde resin CF-34-1A as a curing agent and as an additive - Tetra-4-carboxylation or copper Tetra-4-aminofluorene copper in the following ratio, wt.h.:

Epoxy resin - 95 - 105

Phenol-formaldehyde resin rezol - 65 - 75

Specified phthalocyanine copper - 0,9 - 1,1

 

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