What Are The Raw Material Inspection Methods Of Rotational Molding Manufacturers?
The raw material inspection methods of rotational molding manufacturers generally include the following aspects:
1. Appearance inspection:
Appearance inspection is one of the basic raw material inspection methods.
Observe with the naked eye whether the surface of the raw material is flat, whether there are cracks, bubbles, deformation or other undesirable conditions.
At the same time, it is also necessary to check whether the color of the raw material is uniform, whether the gloss is consistent, etc.
2. Dimension inspection:
Dimension inspection is an important method to check whether the size of the raw material meets the requirements.
Measure through measuring tools or equipment to check whether the length, width, height, thickness and other dimensions of the raw material are within the allowable range,
to ensure that the raw material can meet the requirements of subsequent processing and use.
3. Density inspection:
Density is one of the important physical properties of raw materials and directly affects the physical properties of rotational molding products.
The density of raw materials can be measured by weighing, floating or pressure methods to ensure that the density of raw materials meets the specified standards.
4. Melt fluidity detection:
For some raw materials that require injection molding, extrusion and other processes, melt fluidity is an important parameter.
The melt fluidity of raw materials can be evaluated by melt flow rate, injection pressure and other methods to ensure that the raw materials are suitable for the corresponding processing technology.
5. Component analysis:
The main components and impurity content in the raw materials are detected by chemical analysis.
This can be done by infrared spectroscopy, mass spectrometry, X-ray fluorescence spectroscopy, nuclear magnetic resonance spectroscopy and other means.
For some raw materials with special requirements, organic element analysis, inorganic element analysis and other analysis can also be performed.
6. Thermal performance test:
The thermal properties of raw materials have an important impact on the service life and use environment of the product.
The thermal stability, heat deformation temperature, melt index and other equipment of raw materials are tested by thermal analyzers, thermogravimetric analyzers and other equipment to ensure that the raw materials can withstand high or low temperature environments.
7. Mechanical performance test:
Mechanical properties are one of the important indicators for evaluating the performance of raw materials.
The tensile strength, bending strength, impact toughness and other mechanical performance indicators of raw materials can be tested by universal testing machines, impact testing machines and other equipment.
8. Environmental requirements inspection:
Roto-molded products are usually used in various environments, and there are certain requirements for the environmental adaptability of raw materials.
Aging tests, weather resistance tests and other means can be used to simulate the situation in the real environment to evaluate the weather resistance and corrosion resistance of raw materials.
9. Inspection of harmful substances:
Rotational molded products are often in direct contact with food, medicine, etc., and there are strict requirements on the content of harmful substances in raw materials.
Common methods for detecting harmful substances include heavy metal content analysis, quantitative analysis of residual solvents, and analysis of volatile organic content.
10. Special performance inspection:
According to the specific application requirements of roto-molded products, it is sometimes necessary to inspect the special properties of raw materials, such as UV resistance, electrical insulation, flame retardancy, etc.
In summary, the inspection methods of raw materials of roto-molding manufacturers include appearance inspection, size inspection, density inspection, melt flowability inspection, component analysis, thermal performance test, mechanical performance test, environmental requirements inspection, harmful substance inspection and special performance inspection. Through the above inspections, it can be ensured that the quality and performance of raw materials meet the production requirements of roto-molded products and ensure the quality and safety of products.