1 Scope
This standard specifies terminologies and definitions, classification and marking, requirements, test methods, inspection rules, marking, packaging, transportation and storage of preformed flexible elastomeric cellular thermal insulation.
This standard is applicable to preformed flexible elastomeric cellular thermal insulation with service temperature at -40 ℃~105℃.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigendum) or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this Standard are encouraged to study whether the latest editions of these documents apply. For undated reference, the latest edition of the normative documents referred to applies.
GB/T 2406 Plastics - Determination of Flammability by Oxygen Index
GB/T 2918 Plastics-Standard Atmospheres for Conditioning and Testing
GB/T 4132 Definitions of Terms Relating to Thermal Insulating Materials
GB/T 6342 Cellular Plastics and Rubbers - Determination of Linear Dimensions (idt ISO 1923: 1981)
GB/T 6343 Cellular Plastics and Rubbers-Determination of Apparent (Bulk) Density (neq ISO 845: 1988)
GB/T 6669-2001 Flexible Cellular Polymeric Materials - Determination of Compression Set
GB 8624-2006 Classification for Burning Behavior of Building Materials and Products
GB/T 8627 Test Method for Density of Smoke from the Burning or Decomposition of Building Materials
GB/T 8811 Test Method for Dimensional Stability of Rigid Cellular Plastics (eqv ISO 2796: 1986)
GB/T 10294 Thermal Insulation-Determination of Steady-state Thermal Resistance and Related Properties-Guarded Hot Plate Apparatus
GB/T 10295 Thermal Insulation-Determination of Steady-state Thermal Resistance and Related Properties-Heat Flow Meter Apparatus
GB/T 10296 Thermal Insulation-Determination of Steady-state thermal Transmission Properties-Pipe Insulation Apparatus
GB/T 16259 Test Method for Color Changes in Accelerated Weathering of Colored Building Materials
GB/T 17146-1997 Test Methods for Water Vapour Transmission of Building Materials
3 Terminologies and Definitions
For the purposes of this standard, the terminologies and definitions specified in GB/T 4132 and those listed below apply.
3.1
Preformed flexible elastomeric cellular thermal insulation
Preformed flexible thermal insulation with closed cell structure processed by mixing, extruding, foaming and cooling after adding various additives such as antiaging agent, flame retardant, stabilizer and vulcanite with natural or synthetic rubber and other organic polymer materials as base material.
3.2
Apparent density
Mass of unit volume of foam material at specified temperature and relative humidity.
Foreword I
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Classification and Marking
5 Requirements
6 Test Method
7 Inspection Rules
8 Mark, Label and Instructions
9 Packaging, Transportation and Storage
Appendix A (Normative) Pipe Dimension and Volume Measurement Method
Appendix B (Normative) Determination of Pipe Water Vapor Permeability and Calculation Method of Moisture Resistance Factor
Appendix C (Normative) Determination Method of Vacuum Water Absorption
Appendix D (Normative) Sampling Plan and Judgment Rules of Dimension and Appearance during End-of-manufacturing Inspection
