SU599284A1 - Impregnated glass fabric for flexible laminated electroinsulating material - Google Patents

Description

(54)

PREPARED GLASS FOR FLEXIBLE LAYERED ELECTRICAL INSULATION MATERIAL Bone tearing of these materials — a property that is decisive in their application is not decisive — has not improved. The aim of the invention is to increase the elasticity and mechanical strength of the impregnated glass fabric. This is achieved by the fact that the impregnated fiberglass for flexible laminated electropneoprocessing material on dry paper contains natrabutad as an impregnating composition, non-woven leather and SLE rubber, an escapon compound, factual mala, neozone, and lead rubber in the following ratio of components, masses . % Fiberglass 6 O-8 O Sodium-butadiene rubber SKV9-18 Zskaponovy compound0-18 Scarce oil 0.75-1.5 Neozone D1-2 Lead rubber0 25-0.5 These components of the impregnating composition dissolve in kerosene and they

 Characteristic

Flexible mica

The proposed material is fed with glass fiber, for example, T-20 on impregnating machines at an air temperature in the chambers of machine 15О-17О ° С (the temperature of radiation panels 25 ОЗОО s) with the speed of impregnation m / h. The concentration of the impregnating composition and the pressure of the squeezing devices of the impregnating machine are chosen such as to ensure the content of the components within the specified limits. Depending on the pressure of the squeezing devices, the concentration and viscosity of the composition can vary within 3–8. Technologists of the production of composite glass mica materials with the application of the proposed glass fiber fabric remain almost unchanged. The hardening of the described material is also achieved by the fact that varnishes gluing the composite material do not penetrate such substrates during these processes. Advantage & material compared to conventional flexible micacelide plasmin are visible from the table.

Thickness mm

Resistance to tear, N

Breakdown voltage in the original

state after break, kV

and rolling roller 2, kgf

Breakdown voltage after heat treatment for 6 hours at 125 s, kV

The content of the inorganic part,%

Thus, the proposed fiberglass provides with a significant (up to 5 times) increase in the resistance to tearing of composite materials, their stability, properties for resistance to kinks, which is a very important characteristic indicating that the breakdown voltage and material remain after the windings are laid in the slots .

When introducing the proposed material, the field of application of flexible composite micaceous plastics will significantly expand and the labor intensity of insulation-winding works will be reduced, since high mechanical

0.5.5 20O-500

14.8-18.5 6.0-17.0

5,6-11,0 60-65

the properties of the material allow it to be used as a single-layer mortise box in cases where, according to the conditions of installation and exptituation, groove boxes consisting of three materials with a cuff at the exit of the groove were used.

Invention Form

Impregnated fiberglass for flexible laminated electrically insulating material based on spooled paper, so that, in order to increase elasticity and mechanical strength, it

Contains as an impregnating composition sodium butads and newer SLE rubber, escapon compound, actual oil, neozone D and lead rubberate in the following ratio of components, mass. %:

Fiberglass6O-8O

Sodium Butadiene

rubber C1 B9-18

Zskaponovy compound9-18

Actual flax oil, 5

Neozone D1-2

Resinate lead 0,25-0,5

Sources of information, with these to be taken into account during examination:

1. Glass mica-composite composition TU 16.503.052-72.

2, USSR Author's Certificate NO 392717, cl. H 01 B 3/04, 1970.