This standard specifies the product classification, nomenclature, performance requirements, test methods, inspection rules, marking, packaging, transportation, and storage of fiber reinforced unsaturated polyester sheet molding compounds (SMC) and block molding compounds (BMC) for electrical purposes. This standard applies to electrical fiber reinforced sheet molded plastics (SMC) and block molded plastics (BMC) made from unsaturated polyester resin and vinyl resin as matrices and glass fiber reinforced materials. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. All dated references, subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, all parties who have reached agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. All cited documents that do not indicate the 8th issue. The latest version is applicable to this standard. GB/T1033.1-2008 Plastics - Determination of Density of Non cellular Plastics - Part 1: Immersion Method, Pycnometer Method and Titration Method (ISO 1183-1: 2004. IDT) GB/T 1034-2008 Determination of Water Absorption of Plastics (ISO 62: 2008. IDT) GB/T 1040.1-2006 Determination of Tensile Properties of Plastics - Part 1: General Principles (ISO 527-1; 1993. IDT) GB/T1040.2-2006 Determination of Tensile Properties of Plastics - Part 2: Test Conditions for Moulding and Extrusion Plastics (ISO 527-2:1993. IDT) GB/T 1040.4-2006 Plastics - Determination of Tensile Properties - Part 4: Test Conditions for Isotropic and Orthotropic Fiber Reinforced Composite Materials (ISO 527-4:1997. IDT) GB/T 1043.1-2008 Plastics - Determination of Impact Properties of Simply Supported Beams - Part 1: Non Instrumented Impact Test (ISO 179-1:2000), IDT) GB/T 1408 1-2006 Electrical strength test methods for insulating materials - Part 1: Power frequency tests (IEC 60243-1; 1998. IDT) GB/T 1409-2006 Recommended methods for measuring the capacitance and dielectric loss factor of electrical insulating materials at power frequency, audio frequency, and high frequency (including meter waves) (IEC 60250:1969. MOD) GB/T 1410-2006 Solid insulation materials - Volume resistivity and surface resistivity test methods (IEC 60093:1980, IDT) GB/T 1411-2002 Dry solid insulation materials - High voltage resistance Low current arc discharge test (IEC 61621:1997, 1DT) GB/T 1447-2005 Test method for tensile properties of fiber reinforced plastics (ISO 527-4:1997, NEQ) GB/T 1448-2005 Test method for compressive properties of fiber reinforced plastics GB/T 1449-2005 Test method for flexural properties of fiber reinforced plastics (ISO 14125: 1998, NEQ) GB/T 1634.2-2004 Determination of plastic deformation temperature under load Part 2: Plastics, hard rubber, and long fiber reinforced composite materials (ISO 75-2:2003, IDT) GB/T1844.1-2008 Plastics Symbols and Abbreviations Part 1: Basic Polymers and Their Characteristic Properties (ISO1043-1:2001, IDT) GB/T 1844.2-2008 Plastics Symbols and Abbreviations Part 2: Fillers and Reinforcing Materials (ISO 1043-2:2000, IDT) GB/T 2035-2008 Plastics Terms and Definitions (ISO 472:1999. IDT) GB/T 2406.1-2008 Plastics - Determination of Burning Behavior by Oxygen Index Method - Part 1: Guidelines (ISO 4589-11996. IDT)
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 problemsBaijian 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