HuiNuo QHZ film scratch test to evaluate film strength, Hardness and adhesion

QHZ

Film scratch test instrument

Scribing needle length ≥ 60mm, scribing needle traverse speed 20~40mm/s, scribing needle steel ball diameter 1mm, in line with the standard GB/T9279-88, ISO1518-73, constant speed, non-adjustable speed.

use

The strength, hardness, adhesion and so on of the coating film are important physical properties of the coating film, and its size directly affects the important performance of the coating film, such as: wear resistance; abrasion granularity; scratch resistance; Impact resistance, retention of the coating film and difficulty of cleaning, etc., so the strength and hardness of the coating film are necessary indicators to evaluate the performance of the coating. The use of this instrument can be convenient and comprehensive evaluation of the physical characteristics of the coating film strength, hardness, adhesion and so on, so the purpose of this instrument is to characterize the strength of the coating, hardness and adhesion of the coating by the size of the penetration resistance of the paint film sample coating when it is scratched by the needle.

This instrument is a special equipment developed for the implementation of GB9279-88, which is the condition for the implementation of the national standard.

How the instrument works

This instrument is mainly composed of a needle holder and a workbench, and the needle on the needle holder ensures that it acts vertically on the coating film template (the model is fixed on the laboratory table on the workbench and can be moved horizontally or longitudinally; Lateral movement can be motorized or manual after the power is turned off, and longitudinal movement can be manual).

After the power is turned on, the red indicator light of the power switch indicates that the instrument is powered on. At this time, if the return switch is in the experimental state, the workbench moves from right to left, and the needle contacts the model during the "experiment" stroke; In the return stroke (the return switch is dialed back to the "return" state), the worktable moves from left to right, the scribing needle is lifted without touching the model, and the weight added on the scribing holder is changed, and the paint film can be measured whether it can be cut under different weights, and the minimum weight required to cut the paint film is used to judge the value of the scratch resistance of the coating film.

Requirements for use

1. Coating film sample: prepared according to GB9271-88, specification: 120*50mm

2. Experimental environment: temperature 23±2°C, Relative Humidity: 50±5% (refer to GB9278-88)

Packing list：Film scratch test instrument X1, 50gX2, 100gX2, 200gX1, 500gX3, manual X1

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.