Thermal protection (TPP) test, which sets the true conditions exposed to radiant heat and convective heat. The
fabric sample depends on the typical fire protection environment: a
constant 50% radiant heat and a 50% convection heat combination with a
heat flux of 84 kW / m (approx. 2 cal / cm / s). Then, during the test, the time required for the back of the fabric
and the heat energy delivered to the back of the fabric resulted in the
time required for the personal protective equipment (PPE) wearer to
reach the second burn and the thermal energy (TPP) per surface area.
Detection methods: 1, high temperature test, there are two ways, one is the dynamic combustion test: This is the determination of fabric in the state of the fire resistance method. That is, the strength of the fire and the tensile strength of the fabric is relatively stable, the determination of the fabric burst the shortest time, which indicates that the fabric in the case of high temperature resistance. This is more meaningful for some of the stress parts of the garment, such as elbow and knee performance tests. Second, the clothing or fabric heating cracking test, with a quantitative heat flow impact cloth, the fabric to determine the phenomenon of cracking required for the exposure time, while observing the surface is damaged. After the fabric heat, carbonization or melt shrinkage, such as the hole, which indicates that the local protection of the failure.
2, thermal protection test, thermal protection performance test referred to as TPP test method. This is an experimental method for determining the insulation properties of fabrics. In the test, the heat directly impact the fabric (in two different forms of heat transfer, 50% for the thermal convection, 50% for the heat radiation). The heat sensor measures the heat size of the penetrating fabric, and the computer calculates the heat to simulate the burned skin of the human body.
Detection methods: 1, high temperature test, there are two ways, one is the dynamic combustion test: This is the determination of fabric in the state of the fire resistance method. That is, the strength of the fire and the tensile strength of the fabric is relatively stable, the determination of the fabric burst the shortest time, which indicates that the fabric in the case of high temperature resistance. This is more meaningful for some of the stress parts of the garment, such as elbow and knee performance tests. Second, the clothing or fabric heating cracking test, with a quantitative heat flow impact cloth, the fabric to determine the phenomenon of cracking required for the exposure time, while observing the surface is damaged. After the fabric heat, carbonization or melt shrinkage, such as the hole, which indicates that the local protection of the failure.
2, thermal protection test, thermal protection performance test referred to as TPP test method. This is an experimental method for determining the insulation properties of fabrics. In the test, the heat directly impact the fabric (in two different forms of heat transfer, 50% for the thermal convection, 50% for the heat radiation). The heat sensor measures the heat size of the penetrating fabric, and the computer calculates the heat to simulate the burned skin of the human body.
评论
发表评论