GB/T 34228-2017Dipped heat-resistant canvas - Test method for adhesion strength at high temperature (English PDF)

1 Scope

This standard specifies the heat-dipped canvas and rubber vulcanized to prepare a sample to test its temperature conditions in the 100 °C ~.200 °C

Under the adhesive strength, rubber coverage and other adhesive properties of the test method.

This standard applies to hot dipped canvas high temperature adhesion test.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 2941 Rubbery physical test specimen preparation and conditioning procedures

GB/T 6038 rubber test compounding ingredients, mixing and curing equipment and operating procedures

GB/T 8170 rounded repair rules and limit values of the representation and judgment

GB/T 12833 rubber and plastic tear strength and bond strength determination of multi-peak curve analysis

GB/T 30435 electric oven and electric blast oven

Test methods for dipped canvas GB/T 31334.1 Part 1. Adhesion strength

GB/T 32110 dipped skeleton materials terms and definitions

3 Terms and definitions

GB/T 32110 defined terms and definitions apply to this document.

4 test principle

The dipped canvas and rubber are made into a sample blank according to a certain order, and after being vulcanized, a sample is prepared. Put the specimen into the tensile testing machine

Of the high temperature incubator and clamp the upper and lower holder, preheated to a predetermined time, the sample canvases at a constant speed and the adjacent sail

Peel off the peel force during the peel test peel force peak, the value of the ratio of the width of the specimen dipped canvas at this temperature adhesive strength

Degree; the ratio of the minimum peel force to the width of the sample is the minimum bond strength of the sample at that temperature. Calculate the rubber coverage of the two release surfaces of the specimen

Rate, with the smaller value as the rubber coverage of the sample.

5 equipment and tools

This test should be used constant speed (CRE) tensile testing machine, the tensile testing machine should meet the following requirements.

a) Equipped with a high temperature thermostat equipped with the technical requirements of electric blast drying oven given in GB/T 30435;

b) The testing machine should have a gripper holding the sample, during the test, does not slide, the gripping surface of the two gripper should be the same vertical

In the face, the movable holder should be able to maintain constant speed movement;

c) The testing machine should be equipped with computer hardware and software that can record and process the test data according to the method specified in GB/T 12833

Piece system […]