SU899600A1 - Polymeric filler composition - Google Patents

Description

, {5 t) POLYMER CONSTRUCTION FOR FILLING

one

The invention relates to the preparation of polymer compositions for. fillings of units and blocks with stress-sensitive elements, for magnetic recording equipment and high-voltage equipment.

A known polymer composition comprising an epoxy resin, a hardener and a filler with a low coefficient of thermal expansion (i-eucryltite 1.

The disadvantages of this composition are relatively low dielectric properties, unsatisfactory technological characteristics and high cost.

Closest to the invention is a polymer composition comprising an epoxy resin, an active diluent, an anhydride curing agent, an amine accelerator and a glass-ceramic filler based on aluminum titanate 23.

2

The disadvantages of the known KO1 1OSITION are relatively high coefficient of thermal expansion and insufficient thermal conductivity. In addition, applied in it napol. The media requires sophisticated manufacturing technology.

The purpose of the invention is to reduce the coefficient of thermal expansion and increase thermal conductivity.

to

This goal is achieved by the fact that a polymer composition comprising an epoxy resin, an active diluent, an anhydride hardener, and an aluminum titanate-based filler contains crystalline alumina titanate modified with zirconium dioxide as a filler

20 components, wt.%:

Epoxy resin 12,00-17, Active thinner 2, 61-3.00

Anhydrite from 9, 90-13,21

verditel 0,07-0,08

Amine accelerator

Aluminum titanate,

modified

66.67-75.02

zirconium dioxide

The filler is obtained by displacing equal amounts of alumina, titanium dioxide and zirconia powders, followed by heat treatment for the synthesis of aluminotitanate and grinding.

8 tab. 1 shows the compositions of the obtained compositions based on epoModified laprolo "cycloaliphatic epoxy resin

Epoxy resin

Diglycidyl effcr methyl et ragidroftalevogo anhydride

Isomethyltetrahydrophthal

anhydride 13.21.

Amine accelerator

Aluminum Titanate Modified by Zirconia

sinovola and cycloaliphatic epoxy resins.

In tab. 2 shows the main properties of the obtained polymer compositions in comparison with the known.

As can be seen from the table. 2, the proposed composition is characterized by a lower coefficient of thermal expansion and a higher thermal conductivity compared to the known one, which leads to a decrease in the thermal resistance of the polymer body and, consequently, a decrease in overheating of the active regions of the device.

Table 1

t, 3

i; ..

12.00

143

2.28

2.86

2.61

3.00

13.2

9.90 0.08 0.08

0.07

70.14

71,

75.02

66.17

10-17 10-15

Thermal conductivity,

0.9 1.0 W / m.grad

Watergug feeling for 10 days. %

0.15 0.15

6.10 2.10

H.Y. 2.10

100С

Tangent of dielectric loss angle, -10. Hz

at 20 C

Dielectric constant at 20 ° C

100 ° C

Durability at a static bend.

700 710 kgf / cm

table 2

7-10 9

10-22

0.8

1.2 1.25

0.15 0.15

.N

P.1 1P "

5.10 1.10 9.10 -2.10

I, ."

3.5.10 1.5.10 1.5.10-3.10

700-7 0

789 claims Polymer composition for casting comprising an epoxy resin is an active diluent, anhydrous hardener, amine accelerator and filler based on aluminum titanate, which, in order to reduce the thermal expansion coefficient and increase the heat conductivity, contains crystalline aluminum titanate, modified with zirconia, in the following ratio, wt.%: Epoxy resin 12, Active thinner2, 61-3.00

x: 5ZH. - 4 Anhydrite ot9, 90-13,2 verditel Amine accelerator 0.07-0.08 Aluminum titanate modified with zirconium dioxide 66, 67-75.02 none Information sources taken into account during the examination 1. Authors certificate of SSrR, cl. 08 L 63/00, 1975. 2. USSR author's certificate W 250 3 6 / 23-05, С 08 L БЗ / О, 1978 (prototype).

Claims (2)

claims A polymer composition for pouring comprising an epoxy resin, an active diluent, an anhydride hardener, an amine accelerator and an filler based on aluminum titanate, characterized in that, in order to reduce the coefficient of thermal expansion and increase thermal conductivity, as a filler; q it contains crystalline titanate aluminum, modified with two zirconium oxide, when wearing components, Epoxy resin Active diluent as follows,%: 12.0-17.44 2.61-3.00 Anhydride Hardener Amine Accelerator Zirconia Modified Aluminum Titanate 9.90-13.21 0.07-0.08 66.67-75.02