Glow Wire Standard-CompliantAmilan™CM6004-VG High Flame Resistance Nylon Resin

Ⅰ.Features

1.Flammability

Glow wire (GW) standard-compliant grade CM6004-VG is a grade of product that has achieved extremely good results in a glow wire (GW) flammability test specified by the IEC. In recent years, as production becomes more and more globalized, the need for a resin that complies with global standards is increasing.

Glow Wire (GW) Test Video

Figure 1: Comparison of IEC standard / glow wire (GW) testing and UL94 testing

Figure 1 shows the differences between flammability testing methods in Europe and the United States.

  • Glow wire test UL94 vertical flammability test

Figure 2. Necessity of glow wire (GW) standard compliance grade

IEC60335 Standard
　For appliances or devices for unattended operation with a current of 0.2 A or higher for the European market, materials with GW-FI: 850°C or GW-IT: 775°C or higher are required.

Applicable End Products
　Air conditioners, washing machines, refrigerators, etc.

2.Comparison of Flammability and Electrical Properties of Standard Flame-Retardant Grade Nylon Resin

Glow wire standard-compliant CM6004-VG has the same flame-retardant qualities and tracking-resistance properties as Toray's non-halogen flame-retardant grade CM3004-V0, satisfies RTI, and has a high GW ability. Additionally, the GW-IT means it has resistance to high temperatures, so molded items will thoroughly satisfy GW-T tests.

Table 1. Electrical and flame-retardant characteristics (compared with standard non-halogen flame-retardant grade CM3004-V0)
Properties Measuring method Unit CM6004-VG*1
Glow wire compliant
material		 CM3004-V0
Standard flame-
retardant grade
GW-FI
(3 mm thickness)		 IEC60695-2 ℃ 960*2 960
GW-IT
(3 mm thickness)		 IEC60695-2 ℃ 825*2 750
Flammability UL-94 3.0mmt V-0 V-0
0.25mmt V-0 V-0
Tracking resistance (CTI) UL-746A Rank 0
600V		 0
600V
RTI
(0.66 to 3 mm thickness)		 UL-746B ℃ Str. 105℃
Imp. 105℃
Elec. 130℃		 Str. 105℃
Imp. 105℃
Elec. 130℃

*1 We have obtained 50% regrind certification from UL.
*2 GW-FI and GW-IT are certified by UL and VDE organizations.

3.Key Physical Properties

Toray non-halogen flame-retardant CM3004-V0 resin has become far more widely used in the non-halogen flame-retardant resin market. The glow wire standard-compliant grade CM6004-VG was developed for use in the same field. Table 2 shows a comparison of the physical properties of CM6004-VG and CM3004-V0.

Table 2. CM6004-VG key physical properties (compared with standard non-halogen flame-retardant grade CM3004-V0)
  Measuring method Unit CM6004-VG Dry state CM6004-VG 2.6% water absorption CM3004-V0 Dry state CM3004-V0 2.2% water absorption
Density ISO1138 kg/m3 1,225 - 1,190 -
Tensile strength ISO527-1,-2 MPa 70 35 85 65
Tensile yield stress ISO527-1,-2 MPa 70 35 85 65
Elongation at break ISO527-1,-2 ％ 3.0 65 7.5 7.5
Flexural strength ISO178 MPa 105 40 125 70
Flexural modulus ISO178 GPa 3.5 1.2 3.5 1.5
Charpy impact strength
(notched)		 ISO179 kJ/m2 2.5 5.4 4.5 13.0
Heat deflection
temperature (0.45 MPa)		 ASTM D648 ℃ 194 - 244 -
Mold shrinkage rate
(3 mmt)		 Toray method ％ 1.3 to 1.9 - 1.0 to 1.6 -

*This data is a representative example obtained under specific conditions.

Ⅱ.Injection Molding

1.Fluidity: Bar Flow Data

We recommend designing gate diameters, sprues and runners to be thicker for glow wire standard-compliant CM6004-VG.

Molding temperature: 280°C, Mold temperature: 80°C
Injection speed: 100 mm/sec, Injection time: 10 sec, Cooling time: 10 sec
Molding method: 10 mm width × 1 mm depth flow length measured

2.Solidification Characteristics

CM6004-V0 gate seal time is shown below.
Adjust the cooling time.

  Measurement method Unit CM6004-VG
Glow wire compliant material		 CM3004-V0
Standard flame-retardant grade
Gate seal time*1 Toray method sec 6.2 5.0

*1Gate: submarine gate Φ1

　

Molding temperature: 280°C, Mold temperature: 80°C
Injection speed: 100 mm/sec, Injection pressure: Lower limit -5 MPa, Measurement position: 40 mm, Cooling time: 10 sec

3.Advance Drying

Advance Drying Conditions

・If molding immediately after opening, predrying is not normally required.
・For pellets that have absorbed some moisture, we recommend dehumidification for 4 to 5 hours at 80 to 100°C.

4.Recommended Molding Conditions *Compared to CM3004-V0

Sample name CM6004-VG
Glow wire compliant material		 CM3004-V0
Standard flame-retardant grade
Cylinder temperature 255 to 270℃ 270 to 290℃
Mold temperature 30 to 40℃ 80℃
Injection speed, pressure 50～100 mm/sec, 70 to 120 MPa 50～100 mm/sec, 50 to 100 MPa
Cooling time Adjust for product Adjust for product
S/R, back pressure when measuring 100 to 150 rpm, 3 to 7 MPa 100 to 150 rpm, 3 to 7 MPa
Cushioning Less than 10 mm Less than 10 mm

* These conditions are examples based on representative conditions.