GB 1404.3-2008Plastics -- Phenolic powder moulding compounds -- Part 3: Requirements for selected moulding compounds (English PDF)

Foreword

Table 1 in this section some indicators are mandatory, the rest are recommended.

"Plastic powdered phenolic molding plastic" points the following parts.

--- Part 1. Designation system and basis for specifications;

--- Part 2. Sample preparation and performance measurement;

--- Part 3. Selected plastic molding requirements.

This section "Plastics Phenolic molding powder" in Part 3.

The partial modification of the use of ISO 14526-3:1999 "Plastics --- powdered phenolic molding compounds (PF-PMCs) --- Part 3. Selected mode Plastic requirements "(in English).

Using ISO 14526-3:1999, the made some changes in this section. About the technical differences have been incorporated into the body and they are involved the terms of the margin identified by a single vertical line. In Appendix B gives a list of these technical differences and the reasons for the reference.

For ease of use, this section made the following editorial changes.

a) Remove the ISO 14526-3:1999's "Preface";

b) use a decimal point instead of a decimal comma ",". ",";

c) Chapter 2, "Normative references", whenever there is a corresponding use ISO , IEC standards to national standards, national standards are thus an alternative;

d) with "rhov" instead of "rhoe", "rhos" instead of "sigmae".

This Part replaces GB 1404-1995 "phenolic molding plastic." this part of the difference with GB 1404-1995.

a) the standard name to "powdered phenolic molding plastics - Part 3. Requirements for selected molding compounds";

b) modify the use of ISO 14526-3:1999;

c) product type of filler, the shape and content divided into 10 categories;

d) an increase of three performance indicators tensile stress at break sigmaB, deflection temperature under load Tf8.0 and dielectric loss factor tandelta100 like.

This section of the Appendix A, Appendix B is an informative annex.

This part is proposed by the China Petroleum and Chemical Industry Association.

This part of the National Standardization Technical Committee plastic products sub General Methods and Technical Committee.

This section is responsible for drafting unit. Shanghai European-Asian Synthetic Material Co., Ltd, the State Quality Supervision and Inspection Center of synthetic resin is responsible for drafting.

Participated in the drafting of this section. Shanghai Doubletree plastics factory, Changshu Southeast Plastic Co., Ltd., Zhejiang Jiahua Group Co., Ltd., Xiamen Two Shaxian Hongsheng Chemical Co., Ltd. and Plastic Co., Ltd.

1 Scope

This section provides for the determination of sample compression molded or injection molded plastic powdered phenolic (PF-PWCs) requirements for physical and chemical properties.

This section applies to a different composition and performance, general technical and economic value of the powdery molding compounds.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 1404.1-2008 Plastic powdered phenolic molding materials - Part 1. Designation method and basis for specifications (ISO 14526-1.

1999, IDT)

GB/T 1404.2-2008 Plastic powdered phenolic molding materials - Part 2. Sample preparation and determination of properties (ISO 14526-2.

1999, IDT)

GB/T 2035-2008 Plastics terms and definitions (ISO 472:1999, IDT) GB/T 2407-2008 Determination of properties (ISO 181 when plastic rigid plastic small sample and the catalytic combustion hot rods. 1981, IDT) GB/T 2547-2008 plastic sampling method

3 Terms and Definitions

GB/T 2035-2008, GB/T 1404.1-2008, terms and definitions GB/T 1404.2-2008 established applicable to this section.

4 Requirements

5 Other properties

Water absorption

WW24

<= 100 100 100 150

Free ammonia

% Q/M <= - - 0.02 -

Note 1. The method of sample preparation and performance measurement, see GB/T 1404.2-2008 Table 3, Table 4, 3, 4 and 7.

Note 2. Taking into account the differences in the characteristics of the target range and injection molding materials, namely, test results and possible changes in the characteristics of the material itself implies a wide range of Wai difference between material and therefore has the same name, it should not be regarded as absolutely identical.

Note 3. 2.4,3.1 and mandatory energy projects and 4.6 behavior index value table.

aQ = compression molding.

M = injection molding.

Table 2 contains (SC + LF), SS, PF or (LF + MD) performance requirements powdered filler phenolic molding plastic

Model. molded plastic GB/T 1404.1-2008-PF Property Unit Process A method maximum Least (SC20 + LF15) (SC30 + LF05) SS40 SS50 PF40 PF60 (LF20 + MD25) (LF40 + MD05) 1 flow and process performance 1.1 supply and demand sides agreed

2 Mechanical properties 2.1 Tensile fracture Stress sigmaB MPa 2.2 Bending strength sigmafM MPa 2.3 Simply supported beam red Impact strength Rao cU kJ/m2 5.5 6.0 7.0 9.0 2.5 3.5 5.5 6.0 2.4 Charpy notched Impact strength Rao cA kJ/m2 4.0 4.0 7.0 7.0 1.5 1.5 2.8 2.8 3 thermal performance 3.1 Load deformation Temperature Tf1.8 °C Q/M >= 160 160 170 160 TABLE 2 (cont.) Model. molded plastic GB/T 1404.1-2008-PF Property Unit Process A method maximum Least (SC20 + LF15) (SC30 + LF05) SS40 SS50 PF40 PF60 (LF20 + MD25) (LF40 + MD05) 3.2 Load deformation Temperature Tf8.0 °C Q/M >= 110 115 130 115 3.3 Flammability (Chi Hot rod) BH - Q/M <= BH2-30 BH2-30 BH1 BH2-30

4 Electrical Properties 4.1 Dissipation factor Number tandelta100 - Q/M <= - - 0.10 -4.2 Dissipation factor Number tandelta1M - Q/M <= - - 0.10 -4.3 Volume resistivity Rate rhov ohm · cm Q/M >= - 1012 -4.4 Surface resistivity Rate rhos ohm Q/M >= 108 108 1011 108 4.5 Electric strong Degree Es2 kV/mm Q/M >= - - 10 -4.6 Proof tracking Index PTI - Q/M >= 125 125 175 125 5 other properties 5.1 5.2 Water absorption WW24 mg Q/M <= 150 200 30 150 <= - - - -5.3 Free ammonia % Q/M <= - - - -

Note 1. The method of sample preparation and performance measurement, see GB/T 1404.2-2008 Table 3, Table 4, 3, 4 and 7.

Note 2. Taking into account the differences in the characteristics of the target range and injection molding materials, namely, test results and possible changes in the characteristics of the material itself implies a wide range of Wai difference between material and therefore has the same name, it should not be regarded as absolutely identical.

Note 3. 2.4,3.1 and mandatory energy projects and 4.6 behavior index value table.

aQ = compression molding.

M = injection molding.

Table 3 contains (GF + GG) or (GF + MD) Phenolic molding powder filler performance requirements

Model. molded plastic GB/T 1404.1-2008-PF Property Unit Process A method maximum Least (GF20 + GG30) (GF30 + GG20) (GF30 + MD20) (GF40 + MD10) - -1 flow and process performance 1.1 supply and demand sides agreed

2 Mechanical properties 2.1 Tensile fracture Stress sigmaB MPa 2.2 Bending strength sigmafM MPa 2.3 Simply supported beam red Impact strength Rao cU kJ/m2 6.0 7.0 13.0 15.0 2.4 Charpy notched Impact strength Rao cA kJ/m2 1.5 1.5 3.0 3.5 3 thermal performance 3.1 Load deformation Temperature Tf1.8 °C Q/M >= 190 210 3.2 Load deformation Temperature Tf8.0 °C Q/M >= 140 160 3.3 Flammability (Chi Hot rod) BH - Q/M <= BH1 BH1

4 Electrical Properties 4.1 Dissipation factor Number tandelta100 - Q/M <= 0.25 0.25 4.2 Dissipation factor Number tandelta1M - Q/M <= 0.20 0.20 4.3 Volume resistivity Rate rhov ohm · cm Q/M >= 1011 1012 4.4 Surface resistivity Rate rhos ohm Q/M >= 1010 1011 4.5 Electric strength Es2 kV/mm Q/M >= 10 10 4.6 Proof tracking Index PTI - Q/M >= 175 150

Table 3 (Continued)

Model. molded plastic GB/T 1404.1-2008-PF Property Unit Process A method maximum Least (GF20 + GG30) (GF30 + GG20) (GF30 + MD20) (GF40 + MD10) - -5 other properties 5.1 5.2 Water absorption WW24 mg Q/M <= 30 30 <= - -5.3 Free ammonia % Q/M <= - -

Note 1. The method of sample preparation and performance measurement, see GB/T 1404.2-2008 Table 3, Table 4, 3, 4 and 7.

Note 2. Taking into account the differences in the characteristics of the target range and injection molding materials, namely, test results and possible changes in the characteristics of the material itself implies a wide range of Wai difference between material and therefore has the same name, it should not be regarded as absolutely identical.

Note 3. 2.4,3.1 and mandatory energy projects and 4.6 behavior index value table.

aQ = compression molding.

M = injection molding.

4.2 filler type and content Phenolic molding powder, which filler/reinforcing material type, shape and content should be consistent with the requirements of the molding compound named (see GB/T 1404.1-20084.2).

4.3 Test Method

4.3.1 Sampling methods According to GB/T 2547-2008 requirements.

among them.

a) to take samples using systematic sampling method.

b) Test samples were mixed.

4.3.2 Sample Preparation Samples were prepared according to GB/T 1404.2-2008 Chapter 4 requirements.

4.3.3 Sample conditioning for conditioning according to the provisions of GB/T 1404.2-2008 in Chapter 5.

4.3.4 Test Method

Test methods and test conditions according to GB/T 1404.2-2008 provisions in Chapter 6.

among them.

Volume resistivity and surface resistivity method according to GB/T 1404.2-2008 prescribed measured.

Sample. >=60mm × >=60mm × 1mm or >=60mm × >=60mm × 2mm; electrode. Round three-electrode system; applying electric Pressure. 500V, 1min reading.

Wherein the combustible Press GB/T 2407-2008 requirements were determined.

5 Inspection Rules

5.1 Phenolic molding powder according to the same materials, the same formula, the same process of production, by a mixed group of products.

5.2 manufacturers should test each batch of powdered phenolic molding plastic factory inspection. Factory inspection items, see Table 4. As agreed between the same Italy, increase or decrease the factory inspection items.

Table 4 factory inspection items

No. Project

Factory inspection items 12345678910 1 flow and process performance 1.1 supply and demand sides agreed

2 Mechanical properties 2.1 tensile stress at break sigmaB 2.2 flexural strength sigmafM

2.3 Charpy impact strength Rao cU

2.4 Charpy notched impact strength Rao cA sqrt sqrt sqrt sqrt sqrt sqrt sqrt sqrt sqrt sqrt 3 thermal performance 3.1 deflection temperature under load Tf1.8 sqrt sqrt sqrt sqrt sqrt sqrt sqrt sqrt sqrt sqrt 3.2 deflection temperature under load Tf8.0

3.3 Flammability (hot rod) BH

4 Electrical Properties 4.1 dielectric loss factor tandelta100 4.2 dielectric loss factor tandelta1M

4.3 Volume resistivity rhov sqrt sqrt sqrt sqrt 4.4 surface resistivity rhos sqrt sqrt sqrt sqrt

4.5 Electric strength Es2 sqrt sqrt sqrt sqrt 4.6 resistance to tracking index PTI 5 other properties 5.1 5.2 Water absorption WW24 Note. Fields marked with "sqrt" by the factory inspection items.

5.3 part of Table 1, Table 2, Table 3, all the performance requirements and type test project, at least once a month. When the raw material with Party, or when the process changes the contract, etc., must be type tested.

5.4 Upon examination if any of the indicators do not meet the requirements, we should double the number of package re-sampled and the samples to double Indicators repeated testing. If the result of the repeat test is still not satisfactory, the batch of substandard products should be treated.

5.5 For the use of units received mass acceptance powdered phenolic molding plastic, should be in accordance with the requirements of this section. Depending on the production plant Demand units can provide product inspection reports.

6 Signs, packaging, transportation and storage