GB/T 20186.1-2006 PDF English
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| GB/T 20186.1-2006 | English | 210 |
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Secondary coating materials used for optical fiber -- Part 1: Polybutylene terephthalate
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GB/T 20186.1-2006: Secondary coating materials used for optical fiber -- Part 1: Polybutylene terephthalate
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT20186.1-2006
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 33.180.10
M 33
Secondary Coating Materials Used for Optical Fiber –
Part 1.Polybutylene Terephthalate
Issued on. APRIL 05, 2006
Implemented on. OCTOBER 01, 2006
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine
Standardization Administration of PRC.
Table of Contents
Foreword... 4
1 Scope... 5
2 Normative References... 5
3 Requirements... 6
4 Test Methods... 7
5 Inspection Rules... 10
6 Mark, Package, Transportation and Storage... 12
Appendix A (Normative) Preparation of Standard Specimen for Secondary
Coating Materials... 13
Appendix B (Normative) Test Methods of Moisture Content for Secondary
Coating Materials... 15
Appendix C (Normative) Thermal Hydrolysis Property for Secondary Coating
Materials – Strength Test Methods... 16
Appendix D (Normative) Compatibility of Secondary Coating Materials and the
Filling Ointment... 18
Appendix E (Informative) Technical Requirements and Test Methods of PBT
Loose Tube... 20
Appendix F (Informative) Preparation of Tubular Specimen for Loose Tube. 23
Appendix G (Informative) Sampling Method for the Tubular Specimen of
Loose Tube... 25
Appendix H (Informative) Test Method for Mechanical Properties of Loose
Tube... 26
Appendix J (Informative) Test Method for Axis Backward Shrinkage of Loose
Tube... 28
Appendix K (Informative) Test Method for Thermal Hydrolysis of Loose Tube
... 29
Appendix L (Informative) Test Method for Thermal Aging Resistance of Loose
Tube... 30
Appendix M (Informative) Test Method for Side Pressure Resistance of Loose
Tube... 31
Appendix N (Informative) Test Method for Bending Resistance of Loose Tube
... 33
Appendix O (Informative) Compatibility between Filling Compound and Loose
Tube – Test Method for Winding Resistance... 35
1 Scope
This Part specifies the technical requirements, test methods, inspection rules, mark,
package, transportation and storage of polybutylene terephthalate of secondary
coating materials used for optical fiber.
This Part is applicable to the manufacture, use and acceptance of secondary coating
materials PBT used for optical fiber loose tube.
2 Normative References
The provisions in following documents become the provisions of this Part through
reference in this Part of GB/T 20186.For dated references, the subsequent
amendments (excluding corrigendum) or revisions do not apply to this Part, however,
parties who reach an agreement based on this Part are encouraged to study if the
latest versions of these documents are applicable. For undated references, the latest
edition of the referenced document applies.
GB/T 1033-1986 Test Method for Density and Relative Density of Plastics
GB/T 1034-1998 Plastics – Determination of Water Absorption (eqv ISO 62.1980)
GB/T 1036-1989 Determination for Coefficient of Linear Expansion of Plastics
GB/T 1040-1992 Plastics – Determination of Tensile Properties
GB/T 1410-1989 Methods of Test for Volume Resistivity and Surface Resistivity of
Solid Insulating Materials (eqv IEC 60093.1980)
GB/T 1634.1-2004 Plastics - Determination of Temperature of Deflection under
Load - Part 1.General Test Method
GB/T 1634.2-2004 Plastics - Determination of Temperature of Deflection under
Load - Part 2.Plastics, Ebonite and Long-Fiber-Reinforced Composites
GB/T 1843-1996 Plastics – Determination of Izod Impact Strength (eqv ISO 180-
1993)
3 Requirements
3.1 Appearance
The product is the milky white, milky yellow or colorless transparent cylindrical particles
with diameter of 2mm~4mm, length of 2mm~4mm. The particles shall be smooth, free
of impurities and free of beads.
4 Test Methods
4.1 Appearance
Visually examination under natural light.
4.2 Specimen preparation
The specimen preparation required by each property in Table 1 shall, refer to the
method specified in GB/T 17037.1, specially performed according to the method
specified in Appendix A (normative).
4.3 Standard environment for conditioning and testing of plastic specimens
It shall be performed according to the Conditions 2, 3, 4 in GB/T 2918-1998.
4.4 Density
It shall be performed according to the method specified in GB/T 1033.
4.9 Bending strength, bending modulus of elasticity
It shall be performed according to the method specified in GB/T 9341.Adopt the
standard specimen of (80×10×4) mm3-type. The test speed shall be (2.0±0.4) mm/min.
4.10 Melting point
It shall be performed according to the method specified in GB/T 2951.37.
4.11 Shore hardness HD
It shall be performed according to the method specified in GB/T 2411.
4.12 Izod impact strength
4.12.1 It shall be performed according to the method specified in GB/T 1843.The
length and width of the standard specimen are 80mm and 10.2mm, respectively; the
height range is 4mm~10.2mm.
4.17 Thermal hydrolysis property
The test method of thermal hydrolysis properties may be selected according to the
actual situation of the material supplier and purchaser.
4.17.1 Determination of strength
4.17.1.1 The specimen shall be the Type-I dumbbell standard specimen specified in
GB/T 1040, and prepared according to the Appendix A (Normative).
4.16.
4.18 Compatibility between material and filling ointment
5 Inspection Rules
Inspection can be divided into exit-factory inspection, type inspection, and user
acceptance inspection.
5.1 Exit-factory inspection
5.1.3 According to the requirements of Clause 3, the inspection items in 3.1 and 3.2
Table 1 are the exit-factory inspection items.
5.1.4 If the exit-factory inspection is unqualified, then the products shall be unqualified.
If product properties do not meet the requirements in 3.1 and 3.2 Table 1, then it is said
that the exit-factory inspection is unqualified.
If there are one or more unqualified unit products, then they are called unqualified
products.
5.2 Type inspection
5.2.4 Qualified and unqualified type inspection
5.2.5 Treatment of unqualified type inspection
If the type inspection is unqualified, t hen the material manufacturer shall immediately
stop the exit-factory inspection. Immediately analyse the cause, take measures and
eliminate the unqualified factors till the new type inspection is qualified, can the exit-
factory inspection be restored.
5.3 User acceptance inspection
5.3.1 The user acceptance inspection shall examine all the items in 3.1 and 3.2 Table
1 of Clause 3.
6 Mark, Package, Transportation and Storage
6.1 Mark
6.1.1 The packaging bag of the products that inspected qualified shall be indicated the
name of the materials, code, trademark, designation, batch number (or date of
production), standard number, quality, manufacturer (including address, telephone,
post code); and have the marks for “heat-proof” and “moisture-proof”.
6.2 Package
The product is applied with negative pressure packaging with inner packaging of
composite metal film and outer packaging bag with moisture-proof composite paper;
or negative pressure packaging with packaging bags negotiated between the supplier
and the purchaser.
6.3 Transportation
When transporting the products, do not expose them to the sun and rain; and keep
them dry, clean, intact and pollution-free.
6.4 Storage
The products shall be stored in a clean, dry, cool and ventilated warehouse. The
storage period shall be one year since the date of production.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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