Thermal protective clothing and some fire-retardant properties of the material refers that human body carry out security protection who work under high temperature conditions, so as to avoid the human body's high temperature injury. In theory, there are three forms of heat damage to the human body:

thermal convection; B. heat transfer; C. thermal radiation;

In general, the practical application is more than the above two or three kinds of mixing effect. So the thermal protection should be used for different purposes and use of the environment to highlight its certain thermal protection performance.

I. Thermal Radiation Protection Performance Test Method (RPP Test) Radiant Protective Performance;

II. Thermal Radiation and Heat Convection Mixing Protective Performance Test Method (TPP Test) Thermal Protective Performance;

The RPP test is mainly used to determine the radiant thermal protection performance of thermal protective clothing. Since thermal radiation is one of the main heat transfer forms that cause thermal damage. The method can better test and evaluate the thermal protection performance of thermal protective clothing from one aspect, and has been widely used in the field of forest fire.

Features

Evaluation of flame retardant properties of flame retardant materials

Detect abnormalities and reduce accidents

Calculate the RPP value

Evaluate thermal protection performance

Improve job safety

Improve the quality control system

Technical Parameters

Accessories

(1) Porous Test Plate Assembly

(2) Preheating Plate with Protective Ring

(3) High-Precision Water Supply System

(4) Semipermeable Membrane (for Wet Resistance Testing)

(5) Ambient Temperature and Humidity Sensor

(6) Computer Data Acquisition Software System

Test Procedures

System Preheating: Power on the instrument, set the test plate temperature (e.g., 35°C) and ambient chamber temperature/humidity, allowing the system to reach stable equilibrium.

Thermal Resistance Test (Dry Test): Cover the test plate with a dry sample and measure the constant heat flux required to maintain the temperature difference under water-free conditions.

Wet Resistance Test (Wet Test): Cover the test plate with a semi-permeable membrane simulating skin and inject distilled water.

Sample Installation: Place the test sample flat over the semi-permeable membrane and activate the parallel airflow system.

Data Acquisition: After the system re-establishes dynamic equilibrium, record the heat consumed by water vapor evaporation via software.

Calculation Results: Software automatically subtracts no-load resistance, outputting the material's final thermal resistance ($R_{ct}$) and wet resistance ($R_{et}$) values.

FAQ

1. What is this product?

Answer: It is a precision analytical instrument that physically simulates human skin's heat dissipation and moisture production processes to specifically measure the thermal resistance and moisture resistance values of fabrics.

2. What is this product used for?

A: It quantitatively evaluates a fabric's thermal efficiency and moisture-permeable comfort, serving as the “certificate of identity” for high-end functional fabrics entering the market.

3. How does this product work?

A: A thermostatically controlled heating plate maintains a specific temperature to measure heat loss through the fabric. The moisture resistance test additionally measures the material's resistance to moisture vapor transmission via evaporation.

4. Why is this product important?

Answer: Insufficient moisture resistance in outdoor apparel leads to overheating, chills, or hypothermia; inadequate thermal resistance fails to provide warmth. This instrument provides scientific validation for ensuring garment performance meets standards.