PA12瑞士 TR 60 总/代理商

高速注射速度可使成型良好。

Depth of roughness (µm) 3.2 4.5 6.3 9 13 18

Demoulding angle (%) 1.8 2 2.5 3 4 5

Gate and runner

To achieve an optimal mould-fill and to avoid sink

marks, a central gate at the thickest section of the

moulding is recommended. Pin point gate (direct) or

tunnel gates are more economical and more com-

mon with technical moulding.

To avoid premature solidification of the melt and

difficult mould filing, the following points should be

considered:

0.8 x thickest wall section of the injection

moulding part

1.4 x thickest wall section of the injection

moulding part (but minimum 4 mm)

VENTING

In order to prevent burning marks and improve

weldline strength, proper venting of the mould cav-

ity should be provided (venting channels on the

parting surface dimensions: Depth 0.02 mm, width

2 - 5 mm).

PROCESSING

Mould filling, post pressure and dosing

The best surface finish and a high weld line

strength is achieved with a high injection speed and

when a sufficiently long post pressure is employed.

The injection speed should be regulated so as to

reduce towards the end of the filling cycle in order

to avoid burning. For dosing at low screw revolu-

tions and pressure the cooling time should be fully

utilised.

Basic machine settings

In order to start up the machines for processing

Grilamid LV-5H, following basic settings are rec-

ommended:

Flange 80°C

Zone 1 260°C

Zone 2 265°C

Zone 3 270°C

Nozzle 265°C

Tool 80°C

Melt 260°C

Injection speed medium - high

Hold-on pressure (spec.) bar

Dynamic pressure (hydr.) 5 - 15 bar

Screw speed 50 - 100 min -1

7.5 kN 1) x projected area (cm 2 )

1) in cavity pressure of 750 bar

Clamping force

Gate diameter

Runner diameter

Temperatures

Pressures / Speeds

5

CUSTOMER SERVICES

EMS-GRIVORY is a specialist for polyamide syn-

thesis and polyamide-processing. Our customer

services are not only concerned with the manufac-

turing and supply of engineering thermoplastics but

also provide a full of technical support program:

• Rheological design calculation / FEA

• Prototype tooling

• Material selection

• Processing support

• Mould and component design

We are happy to advice you. Simply call one of our

sales offices.

The recommendations and data given are based on our

experience to date, however, no liability can be assumed

in connection with their usage and processing.

LHT/04.01

www.emsgrivory.com

nrcs tr 60

PA12尼龙12弹性体有优良的噪音和振动阻尼性，在干燥运转条件下，对钢、POM、PBT和其他材料的滑动摩擦

注塑模工艺条件

干燥处理:加工之前应保证湿度在0.1%以下。如果材料是暴露在空气中储存，建议要在85℃热空气中干燥4~5小时。

如果材料是在密闭容器中储存，那么经过3小时温度平衡即可直接使用。

熔融温度:240~300℃;对于普通特性材料不要超过310℃，对于有阻燃特性材料不要超过270℃。

高速注射速度可使成型良好。超耐磨PA12/瑞士EMS FE7547 BK 耐化学 高透明尼龙 包线尼龙

PA12尼龙12弹性体有优良的噪音和振动阻尼性，在干燥运转条件下，对钢、POM、PBT和其他材料的滑动摩擦系数低、

优良的耐磨损性和高体积稳定性。正因为这些性质，该产品特别适用于DVD、CD、MD、VCR、便携式摄像机、数码相机、打印机和录像机等的无声齿轮。

T ECHNICAL  D ATA  S HEET

G RILAMID  LV-5H

Product description

Grilamid LV-5H is a 50% glass fibre rein-

forced, heat stabilised polyamide 12 injection

moulding grade with the following product

profile

•  Good chemical resistance

•  Good UV Stability

•  High impact strength

•  conforms to UK WRAS drinkingwater

standards

•  Very dimensionally stable

•  Very low shrinkage

Grilamid LV-5H is suitable for production of

technical parts in the application fields of:

-  Electro

-  Electronics

-  Automotive

-  Safety technology

-  Mechanical engineering

-  Domestic appliances

2

PROPERTIES

Mechanical Properties

Standard Unit State

Grilamid LV-5H

natural

Tensile E-Modulus 1 mm/min ISO 527 MPa cond. 11500

Tensile strength at break 5 mm/min ISO 527 MPa cond. 160

Elongation at break 5 mm/min ISO 527 % cond. 5

Impact strength Charpy, 23°C ISO 179/1eU kJ/m² cond. 80

Impact strength Charpy, -30°C ISO 179/1eU kJ/m² cond. 80

Notched impact strength Charpy, 23°C ISO 179/1eA kJ/m² cond. 20

Notched impact strength Charpy, -30°C ISO 179/1eA kJ/m² cond. 15

Shore hardness D ISO 868 - cond. 82

Thermal Properties

Melting point DSC ISO 11357 °C dry 178

Heat deflection temperature HDT/A 1.80 MPa ISO 75 °C dry 165

Heat deflection temperature HDT/C 8.00 MPa ISO 75 °C dry 125

Thermal expansion coefficient long. 23-55°C ISO /K dry 0.15

Thermal expansion coefficient trans. 23-55°C ISO /K dry 1.20

Maximum usage temperature long term ISO 2578 °C dry 90 - 120

Maximum usage temperature short term ISO 2578 °C dry 150

Electrical Properties

Dielectric strength IEC 60243-1 kV/mm cond. 35

Comparative tracking index CTI IEC 60112 - cond. 600

Specific volume resistivity IEC 60093 Ω · m cond. 10 11

Specific surface resistivity IEC 60093 Ω cond. 10 12

General Properties

Density ISO 1183 g/cm³ dry 1.47

Flammability (UL94) 0.8 mm ISO 1210 rating - HB

Water absorption 23°C/sat. ISO 62 % - 0.8

Moisture absorption 23°C/50% r.h. ISO 62 % - 0.4

Linear mould shrinkage long. ISO 294 % dry 0.10

Linear mould shrinkage trans. ISO 294 % dry 0.50

Product-nomenclature acc. ISO 1874: PA12, MHR, 18-120, GF50

3

Processing information for the injection moulding of Grilamid LV-5H

This technical data sheet for Grilamid LV-5H pro-

vides you with useful information on material prepa-

ration, machine re, tooling and process-

ing.

MATERIAL PREPARATION

Grilamid LV-5H is delivered dry and ready for proc-

essing in sealed, air tight packaging. Predrying is

not necessary.

Storage

Sealed, undamaged bags can be kept over a long

period of time in storage facilities which are dry,

protected from the influence of weather and where

the bags can be protected from damage.

Handling and safety

Detailed information can be obtained from the

“Material Safety Data Sheet” (MSDS) which can be

re with every material order.

Drying

Grilamid LV-5H is dried and packed with a moisture

content of less than 0.10 %. Should the packaging

become damaged or the material is left open too

long, then the material must be dried. A too high

moisture content can be shown by a foaming melt

and silver streaks on the moulded part when in-

jected freely into the atmosphere (free shot).

Drying can be done as follows:

Temperature: max. 80°C

Time: 4 - 12 hours

Dew point of the dryer: -25°C

Temperature: max. 100°C

Drying time

If there is only little evidence of foaming of the melt

or just slight silver streaks on the part, then the

above mentioned minimal drying time will be suffi-

cient. Material, which is stored open over days,

which shows strong foaming, unusually easy flow-

ing, streaks and rough surface on the moulding

part, then the maximal drying time is required.

Silver streaks can also be caused by

overheating of the material or by too long

melt residence time in the barrel.

Drying temperature

Polyamides are subjected to the affects of oxidation

at temperatures above 80°C in the presence of

oxygen. Visible yellowing of the material is an indi-

cation of oxidation. Hence temperatures above

80°C for desiccant dryers and temperatures above

100°C for vacuum ovens should be avoided. In

order to detect oxidation it is advised to keep a

small amount of granulate (light colour only !) as a

comparison sample.

At longer residence times (over 1 hour) hopper

heating or a hopper dryer (80°C) is useful.

Use of regrind

Grilamid LV-5H is a thermoplastic material. Hence,

incomplete mouldings as well as sprues and run-

ners can be reprocessed. The following points

should be observed:

•  Moisture absorption

•  Grinding: Dust particles and particle size distri-

bution

•  Contamination through foreign material, dust,

oil, etc.

•  addition to original material

•  Colour variation

•  Reduction of mechanical properties

When adding regrind, special care has to be taken

by the moulder.

MACHINE REQUIREMENTS

Grilamid LV-5H can be processed economically and

problem-free on all machines suitable for polyam-

ides.

Screw

Wear protected, universal screws with shut-off

nozzles are recommended (3 zones).

Length: 18 D - 22 D

Compression ratio: 2 - 2.5

Shot volume

The metering stroke must be longer than the length

of the back flow valve (without decompression

distance).

Shot volume = 0.5 - 0.8 x

(max. shot volume)

Selecting the injection unit

!

Desiccant dryer

Vacuum oven

4

Heating

At least three separately controllable heating

zones, able of reaching cylinder temperatures up to

300°C. A separate nozzle heating is necessary.

The cylinder flange temperature must be controlla-

ble (cooling).

Nozzle

Open nozzles are simple, allow an easy melt flow

and are long lasting. There is however the danger

that during retraction of the screws following injec-

tion of the melt, air maybe drawn into the barrel

(decompression). For this reason, needle shut-off

nozzles are often used.

Clamping force

As a rule of thumb the clamping force can be esti-

mated using the following formula:

TOOLING

The design of the mould tool should follow the

general rules for glass fiber reinforced thermoplas-

tics.

For the mould cavities common mould tool steel

(e.g. hardened steel) which has been hard-

ened to level of 56 HRC is necessary. We recom-

mend additional wear protection in areas of high

flow rates in the tool (e.g. pin point gates, hot run-

ner nozzles).

Demoulding / Draft angle

Parts moulded from Grilamid LV-5H showing ex-

cellent dimensional stability. Asymmetric demould-

ing and undercuts are to be avoided. It is favourable

to foresee high numbers of large ejector pins or a

stripper plate. Demoulding draft angles between 1

to 5° are acceptable. Following values can be con-

sidered:

(VDI 3400) 12 15 18 21 24 27

Depth of roughness (µm) 0.4 0.6 0.8 1.1 1.6 2.2

Demoulding angle (%) 1 1 1.1 1.2 1.3 1.5

(VDI 3400) 30 33 36 39 42 45

tr 60 filter

pentair tr60 sand filter

nrcs dam design

triton tr 60 parts

nrcs dam safety

triton sand filter tr 60

pentair tr 60

耐热 润滑 耐高温 管材级 PA12 瑞士EMS TR-60 抗紫外线