Polymer composition

 

(57) Abstract:

Use: for the manufacture of molded products constructional purposes. The inventive polymer composition is prepared by mixing extruder components: 100 wt.h. polyalkylacrylate, 2.0 to 10.0 wt.h. high molecular weight of the modified epoxy resin, 0.2 to 1.0 wt.h. (di)of the anhydride of an aromatic di-, tri - or tetracarbonyl acid, 0.2 to 2.0 wt.h. thermo stabilizer and 2.0 90 wt.h. the filler. High molecular weight epoxy resin is produced by interaction of the low-molecular epoxygenase resin mol.m.340 600 technical dioxideemissions, phthalic anhydride and three (n-AMINOPHENYL)methane in their mass ratio(50 94) (4,8 - 27,5) (0,5 14,5) (0,7 8,0) respectively. Based on the composition produce the products by injection molding. table 4.

The invention relates to polymeric compositions based polyalkylacrylate containing epoxy resin, thermo stabilizer, mineral filler, and can be used for the manufacture of molded products for constructional applications in engineering, electronic and electrical industry.

Known polymeric composition based 94-24 wt. including polyalkyl the om and acrylate, 5-75 wt. including fiberglass filler and 0.1-20 wt. including epoxy resin based on bisphenol a [1]

The composition has a high mechanical strength in static bending, however, has a relatively low impact strength and dielectric strength, the drawback is the low resistance to heat aging.

Closest to the technical essence is a polymeric composition comprising polyalkyleneglycol (100 wt. hours), high molecular weight modified epoxy resin with a softening temperature of 100-120aboutAnd the content of epoxy groups of 6-10% (2.0 to 10.0 wt. h), thermo stabilizer (0.2 to 1.0 wt. o'clock ) and the filler (12-80 wt. h) [2] the Epoxy resin is a product of the interaction of epoxygenase resin, technical dioxideemissions, technical dichlorobenzophenone and tetrahydroimidazo-2-it. The composition has a high impact strength, the Flexural, electric strength, the disadvantage is the relatively low resistance to heat aging.

The aim of the invention is to improve the stability of the composition to thermal aging while achieving high physical-mechanical NWO is phthalate, high molecular weight modified epoxy resin with a softening temperature of 100-120aboutAnd the content of epoxy groups of 6-10% thermo stabilizer and a filler, as a high molecular weight of the modified epoxy resin it contains the product of the interaction of the low-molecular epoxygenase resin mol. m 340-600 with technical dioxideemissions, phthalic anhydride, and three(p-AMINOPHENYL)methane, when the mass ratio(50-94):(4,8-27,5):(0,5-14,5):(0,7-8,0) respectively, and optionally (d)an anhydride of an aromatic di-, tri - or tetracarbonyl acid, the following mass ratio of the components of the composition, wt. including Polyalkylene - phthalate 100

Macromolecular

modified epoxy resin 2,0-10,0

(Di)oxide, di-, tri-

or tetracarbonyl acid 0.2 to 1.0 thermo stabilizer 0,2-2,0 Filler 2,0-90.

P R I m e R 1. Synthesis of high molecular weight epoxy resin.

I stage. In a reactor equipped with heater, stirrer, a direct fridge and a trap for the low-boiling liquids, load 43 parts of acetone and 16,15 wt. including technical dioxideemissions (TU 6-4-14-79) when the ratio of isomers of 4,4 - and 3.3-dioxideemissions 59:41, stirred at 20-30aboutTo pivot at the same temperature until complete dissolution.

II stage. In the resulting solution is injected pre-heated to 40-50aboutWith epoxy resin (mol. m 420 (ED-20, GOST 10587-84) in the amount of 72 wt. 'clock raise the temperature of 70-90aboutC and stirred for 30-60 minutes

Stage III. Raise the temperature to 100-120aboutC and stirred for 30-120 minutes in the trap of distilled acetone. After the start of exothermic reactions include cooling.

The product obtained high molecular weight epoxy resin is poured into gastropanel containers.

Examples 2-28 carried out analogously to example 1, when the ratio of the components listed in table. 1, the properties of the high molecular weight resin are given in table. 2.

Obtaining polymeric composition.

P R I m e R 1. A mixture of 100 wt. including polybutylene terephthalate (pbtf was honored with), 6 wt. including high molecular weight epoxy resin of example 1, 1.1 wt. hours of thermo stabilizer of stator II (TU 6-14-22-203-87), 0.6. CH dianhydride pyromellitic acid supplied in the feed zone of the extruder, is captured by a screw, is melted by heating the body of the extruder and homogenized. Roving of glass fibers (GOST 17139-79) (or dosed fiber) is sent in the third zone of the extruder in the melt mixture, where the delayed gate, frays disk nozzles and mixed with the polymer. In the fourth zone of the extruder is vacuum-suction of volatile components in the vacuum installation.

The molten material is extruded through a die of the extruder in the form of strands that pass through a cooling bath, and fed into the granulator samples made by injection molding.

Examples 2-28 obtain polymer compositions is carried out analogously to example 1, but under the conditions listed in table. 3. Properties of the polymer compositions of examples 1-28 in comparison with the prototype and analogues placed in a table. 4.

In the polymer compositions of examples 1-28 used epoxy resin, corresponding to the examples 1-28 for these resins.

Thus, the use in polymer compositions on the basis of polyalkylacrylate as a professional - molecular-modified epoxy resin product of the interaction of the low-molecular epoxygenase resin with technical dioxideemissions, phthalic anhydride and three(p-AMINOPHENYL)methane in their mass ratio(50-94):(4,8-27,5):(0,5-14,5): (0,7-8,0) accordingly, to enhance the stability of the composition to thermal aging while maintaining a high Uro is phthalate, high molecular weight modified epoxy resin with a softening temperature of 100 120oAnd the content of epoxy groups of 6 to 10% thermo stabilizer and a filler, characterized in that as the high molecular weight of the modified epoxy resin it contains the product of the interaction of the low-molecular epoxygenase resin mol. m 340 600 technical dioxideemissions, phthalic anhydride and three (p-AMINOPHENYL) methane in their mass ratio(50 94) (4,8 27,8) (0,5 14,5) (0,7 8,0) respectively, and optionally (d)an anhydride of an aromatic di-, tri - or tetracarbonyl acid at the following mass ratio of the components of the composition by weight.h.

Polyalkyleneglycol 100

High molecular weight modified epoxy resin 2,0 10,0

(Di)the anhydride of an aromatic di-, tri - or tetracarbonyl acid 0,2 1,0

Thermo stabilizer 0,2 2,0

Filler 2,0 90,0

 

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