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ASTM D1248-05标准介绍

ASTM D1248是电线和电缆用聚乙烯塑料挤压材料标准规范：

ASTM D1248规定了聚乙烯塑料挤出材料的电线电缆在不同商业地段或分批装运的买卖双方都可以接受的鉴定。本规范涉及的试验目的是提供用于根据所述类型识别材料、类别和等级范围的信息。本规范不提供设计目的特殊工程数据。

ASTM D1248英文版本（节选）
1. Scope

1.1 This specification provides for the identification of polyethylene plastics extrusion materials for wire and cable in such a manner that the seller and the purchaser can agree on the acceptability of different commercial lots or shipments. The tests involved in this specification are intended to provide information for identifying materials according to the types,classes, categories, and grades covered. It is not the function of this specification to provide specific engineering data for design purposes.

1.2 This specification does not allow for the use of recycled plastics (see Note 3).

1.3 The values stated in SI units are to be regarded as the standard.

1.4 The following safety hazards caveat pertains only to the test method portion, Section 12, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

NOTE 1—No ISO equivalent.

NOTE 2—This standard has undergone major revision from the reapproval of 1989 and now covers only polyethylene for wire and cable

applications. For information regarding molding and extrusion materials, see Specification D 4976. For information regarding plastic pipe materials, see Specification D 3350.

NOTE 3—See Guide D 5033 for information and definitions related to recycled plastics.

2. Referenced Documents

2.1 ASTM Standards: 2

D 150 Test Methods for A-C Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation

D 257 Test Methods for D-C Resistance or Conductance of Insulating Materials

D 618 Practice for Conditioning Plastics for Testing

D 638 Test Method for Tensile Properties of Plastics

D 746 Test Method for Brittleness Temperature of Plastics and Elastomers by Impact

D 792 Test Methods for Specific Gravity (Relative Density) and Density of Plastics by Displacement

D 1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer

D 1505 Test Method for Density of Plastics by the Density-Gradient Technique

D 1531 Test Method for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedure

D 1603 Test Method for Carbon Black in Olefin Plastics

D 1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics

D 1898 Practice for Sampling of Plastics

D 2565 Practice for Xenon-Arc Exposure of Plastics Intended for Outdoor Applications

D 2633 Test Methods for Thermoplastic Insulations and Jackets for Wire and Cable

D 2839 Test Method for Use of a Melt Index Strand for Determining Density of Polyethylene

D 2951 Test Method for Resistance of Types III and IV Polyethylene Plastics to Thermal Stress-Cracking

D 3182 Practice for Rubber-Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets

D 3349 Test Method for Absorption Coefficient of Ethylene Polymer Pigmented with Carbon Black

D 3350 Specification for Polyethylene Plastics Pipe and Fittings Materials

D 3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials

D 3892 Practice for Packaging/Packing of Plastics

D 4329 Practice for Fluorescent UV Exposure of Plastics

D 4703 Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets

D 4976 Specification for Polyethylene Plastics Molding and Extrusion Materials

D 5033 Guide for the Development of ASTM Standards Relating to Recycling and Use of Recycled Plastics

E 1131 Test Method for Compositional Analysis by Thermogravimetry

G 151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices That Use Laboratory Light Sources

G 153 Practice for Operating Enclosed Carbon-Arc Light Apparatus for Exposure of Nonmetallic Materials

G 154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials

G 155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Nonmetallic Materials

2.2 Federal Specification:3

L-P-390 Plastic, Molding, and Extrusion Materials, Polyethylene and Copolymers (Low, Medium, and High Density)

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