英语
中文简体In the catering industry, disposable plastic tableware is widely used because of its convenience and economy. However, its heat resistance directly affects the safety and service life of tableware. Therefore, it is particularly important to test the heat resistance of disposable plastic tableware.
Heat deformation temperature test
The heat deformation temperature test is a key indicator for evaluating the deformation of plastic materials under heat. For disposable plastic tableware, this test is crucial because it can directly reflect the stability of tableware in a high temperature environment. During the test, a sample of standard size is placed in a heat deformation temperature tester, a certain load is applied, and the temperature is gradually increased until the sample undergoes a predetermined deformation. The recorded temperature is the heat deformation temperature. This test method can intuitively reflect the deformation of tableware under high temperature, providing an important basis for evaluating its heat resistance.
Heat shock test
The heat shock test is used to evaluate the stability of disposable plastic tableware under rapid temperature changes. In the test, the tableware is first placed in a high temperature environment for preheating for a period of time, and then quickly transferred to a low temperature environment, or reversed, to observe whether the tableware has cracks or breaks. This test can simulate the temperature changes that tableware may encounter during actual use, thereby effectively evaluating its heat shock resistance.
Thermal aging performance test
The thermal aging performance test is designed to evaluate the stability of disposable plastic tableware in a long-term high temperature environment. During the test, the tableware is placed in a constant temperature and humidity chamber or a hot air circulation drying chamber, set to specific temperature and humidity conditions, and last for a period of time. Subsequently, observe whether the physical properties of the tableware, such as appearance, color, hardness, etc., have changed, and whether any harmful substances have migrated into the food. This test method can simulate the aging phenomenon of tableware during long-term use, providing an important basis for evaluating its heat resistance and safety.
Thermal stability test
The thermal stability test is used to evaluate the mass loss of disposable plastic tableware at high temperatures. During the test, the tableware is placed in a thermal gravimetric tester, set to specific temperature and time conditions, and observe the mass change of the tableware. By calculating the mass loss rate, the stability of the tableware at high temperatures can be effectively evaluated. This test method can reflect the thermal decomposition of tableware under high temperature conditions, providing important data support for evaluating its heat resistance.
Other test methods
In addition to the above test methods, there are many other test methods that can be used to evaluate the heat resistance of disposable plastic tableware. For example, the heat resistance of tableware can be evaluated by observing the color change, odor change, and precipitation of harmful substances at high temperatures. In addition, using high-end analytical instruments such as infrared spectrometers and nuclear magnetic resonance instruments to conduct in-depth analysis of the chemical composition and structure of tableware can provide a more comprehensive understanding of its heat resistance.
