BAIJIAN - Third party testing organization
Polystyrene refers to a polymer synthesized by free radical addition reaction of styrene monomer、 with the chemical formula (C8H8) n. It is a colorless and transparent thermoplastic with a glass transition temperature higher than 100 ℃、 so it is often used to make various disposable containers that need to withstand the temperature of boiling water、 as well as disposable foam lunch boxes. Polystyrene (PS) includes regular polystyrene、 expanded polystyrene (EPS)、 high impact polystyrene (HIPS)、 and syndiotactic polystyrene (SPS). Ordinary polystyrene resin is a non-toxic、 odorless、 colorless transparent particle、 resembling a glass like brittle material. Its products have extremely high transparency、 a transmittance of over 90%、 good electrical insulation performance、 easy coloring、 good processing fluidity、 good rigidity、 and good chemical corrosion resistance. The shortcomings of ordinary polystyrene lie in its brittleness、 low impact strength、 susceptibility to stress cracking、 poor heat resistance、 and lack of resistance to boiling water. Ordinary polystyrene resin belongs to amorphous polymer、 and the side groups of polystyrene macromolecular chains are benzene rings. The random arrangement of large volume side groups with benzene rings determines the physical and chemical properties of polystyrene、 such as high transparency、 high stiffness、 high glass transition temperature、 and brittleness. The expandable polystyrene is made by dipping the physical foaming agent with low boiling point in the ordinary polystyrene. It foams when heated during processing、 and is specially used to make foam plastic products. High impact polystyrene is a copolymer of styrene and butadiene、 with butadiene as the dispersed phase、 which improves the impact strength of the material、 but the product is opaque. Syndiotactic polystyrene has a syndiotactic structure and is produced using metallocene catalysts. It has developed a new variety of polystyrene with good performance and belongs to the category of engineering plastics
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China