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“十年老店，完备售后，信誉信赖” 是专业塑胶原料供应商
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注塑件尺寸差异起因及解决办法
注塑过程中重量及尺寸的变化超过了模具/注塑机/塑料组合的生产能力。
可能的起因以及建议使用的补救方法：
1、注塑机
A、输入射料缸内的塑料不均。
检查有无充足的冷却水流经料斗喉以保持正确的温度。
B、射料缸温度或波动的范围太大。
检查有否劣质或松脱的热电偶。
检查与温度控制器一起使用的热电热偶是否属于正确类型。
C、注塑机容量太小。
检查注塑机的注塑量和塑化能力，然后与实际注塑量和每小时塑料用量进行比较。
D、不稳定的注塑压力。
检查是否每次运作都有稳定的熔融垫料。
检查回流防止阀有否漏，若有需要就进行更换。
检查是否错误的进料设定。
E、螺杆复位不稳定。
保证螺杆在每次运作时复回位置都是稳定的，即不多于0.4mm（0.16in）的变化。
F、运作时间的变化、熔液粘度不一致。
检查运作时间的不一致性。
使用背压。专业塑料知识交流微信群加小编微信：771301864
2、模具
A、浇口部分被堵塞。
检查是否任何迹象显示浇口残留物在浇口的孔内，尤其是潜水式浇口。
B、不一致的模具温度控制。
检查用于模具冷却的冷却介质是否有着温度变化。
检查模具冷却管道有无堵塞。
检查冷却管道是否正确相连。
3、塑料
A、塑料变化。
检查进料量大小的变化。保证细末从回用料中筛掉了。
检查是否将两批塑料混合在一起。
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 1.42 g/cc | 0.0513 lb/in3 | ISO 1183 |
| Linear Mold Shrinkage, Flow | 0.021 cm/cm | 0.021 in/in | ISO 294-4, 2577 |
| Linear Mold Shrinkage, Transverse | 0.018 cm/cm | 0.018 in/in | ISO 294-4, 2577 |
| Melt Flow |
6.0 g/10 min @Load 2.16 kg, Temperature 190 °C |
6.0 g/10 min @Load 4.76 lb, Temperature 374 °F |
cm3/10 min volumetric rate; ISO 1133 |
|
7.0 g/10 min @Load 2.16 kg, Temperature 190 °C |
7.0 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | |
| Mechanical Properties | Metric | English | Comments |
| Tensile Strength, Yield | 71.0 MPa | 10300 psi | ISO 527-1/-2 |
| Elongation at Break | 40 % | 40 % | Nominal; ISO 527-1/-2 |
| Elongation at Yield | 22 % | 22 % | ISO 527-1/-2 |
| Tensile Modulus | 3.05 GPa | 442 ksi | ISO 527-1/-2 |
| Charpy Impact Unnotched |
31.0 J/cm2 @Temperature -30.0 °C |
148 ft-lb/in2 @Temperature -22.0 °F |
ISO 179/1eU |
|
NB @Temperature 23.0 °C |
NB @Temperature 73.4 °F |
ISO 179/1eU | |
| Charpy Impact, Notched |
0.950 J/cm2 @Temperature -30.0 °C |
4.52 ft-lb/in2 @Temperature -22.0 °F |
ISO 179/1eA |
|
1.00 J/cm2 @Temperature 23.0 °C |
4.76 ft-lb/in2 @Temperature 73.4 °F |
ISO 179/1eA | |
| Thermal Properties | Metric | English | Comments |
| Melting Point | 178 °C | 352 °F | 10°C/min; ISO 11357-1/-3 |
| Deflection Temperature at 0.46 MPa (66 psi) | 163 °C | 325 °F | ISO 75-1/-2 |
| Deflection Temperature at 1.8 MPa (264 psi) | 100 °C | 212 °F | ISO 75-1/-2 |
| Annealing Point | 160 °C | 320 °F | |
| Processing Properties | Metric | English | Comments |
| Melt Temperature | >= 210 °C | >= 410 °F | |
| 215 °C | 419 °F | Optimum | |
PMMA (PMMA # organic glass acrylic /EX/ Japan Sumitomo |)
Uses: other
Important beters: melt flow rate: 1.5 g/10min density: 1.19 g/cm3 absorption rate: 0.3% molding shrinkage rate: 0.2% bending strength: 120 MPa flexural modulus: 3200 MPa hardness: 100 VEKA softening point of 104 DEG C heat debation temperature of 99 DEG C: light transmittance: 93%
Manufacturer: Sumitomo Chemical Industries Ltd
PMMA (PMMA # organic glass acrylic /HT20Y/ Japan Sumitomo |)
Uses: other
Important beters: melt flow rate: 24 g/10min density: 1.8 g/cm3 water absorption: 0.3% bending strength: 92 MPa bending modulus: 2600 MPa hardness: 80 VEKA softening point: 89 degrees of hot debation temperature: 80 DEG C light transmittance: 93%
Manufacturer: Sumitomo Chemical Industries Ltd
PMMA (PMMA # organic glass acrylic /MG5/ Japan Sumitomo |)
Uses: other
Important beters: melt flow rate: 5 g/10min density: 1.9 g/cm3 water absorption: 0.3% bending strength: 115 MPa bending modulus: 3200 MPa hardness: 95 VEKA softening point: 107 degrees of hot debation temperature: 99 DEG C light transmittance: 93%
Manufacturer: Sumitomo Chemical Industries Ltd
PMMA (PMMA # organic glass acrylic /DR-T/ France akema |)
Uses: other
Important beters: density: 1.16 g/cm3 molding shrinkage: 0.35% notched impact strength: 58.7 bending modulus: 1860 MPa VEKA softening point: 95 degrees of hot debation temperature: 85 degrees of light transmittance: 90%
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic /HFI-10/ France akema |)
Uses: other
Important beters: melt flow rate: 3.3 g/10min density: 1.15 g/cm3 water absorption: 0.4% molding shrinkage: 0.3% notched impact strength: 53.4 bending modulus: 1860 MPa VEKA softening point: 82.8 degrees of hot debation temperature: 79.4 degrees centigrade
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic /MI-4T/ France akema |)
Uses: other
Important beters: melt flow rate: 3 g/10min density: 1.18 g/cm3 absorption rate: 0.3% molding shrinkage rate: 0.3% notched impact strength, flexural modulus of 2960 MPa 21.4: VEKA softening point debation temperature: 90 degrees 102 degrees of heat transmittance: 92%
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic /SG-7/ France akema |)
Uses: other
Important beters: melt flow rate: 12.3 g/10min density: 1.17 g/cm3 absorption rate: 0.3% molding shrinkage rate: 0.3% notched impact strength, flexural modulus of 2410 MPa 32: VEKA softening point debation temperature: 78.9 degrees 82.8 degrees of heat transmittance: 92%
Manufacturer: Arkema
PMMA (organic glass acrylic PMMA # |) /V045 I/ France akema
Uses: other
Important beters: melt flow rate: 2 g/10min density: 1.18 g/cm3 notched impact strength: 21.4 elongation at break: 15% flexural modulus: 2960 MPa VEKA softening point: 101 degrees of hot debation temperature: 90.6 degrees of light transmittance: 92%
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic /VS/ France akema |)
Uses: other
Important beters: melt flow rate: 27 g/10min density: 1.19 g/cm3 absorption rate: 0.3% molding shrinkage rate: 0.2% notched impact strength and elongation at break: 16: 3%: 96.5 flexural strength flexural modulus of MPa: 2900 MPa: VEKA softening point debation temperature of 81.1 DEG C: 76.1 degrees heat transmittance: 92%
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic /A/ France akema |)
Uses: other
Important beters: melt flow rate: 1.6 g/10min density: 1.15 g/cm3 absorption rate: 0.4% molding shrinkage rate: 0.3% notched impact strength and elongation at break: 58.7: 50%: 1860 VEKA MPa flexural modulus softening point of 97.8 DEG C heat debation temperature of 79.4 DEG C: light transmittance: 90%
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic /UVA20/ France akema |)
Uses: other
Important beters: density: 1.15 g/cm3 absorption rate: 0.4% molding shrinkage rate: 0.3% notched impact strength: 59 bending strength: 71 MPa flexural modulus: 1860 MPa hardness: 45 VEKA softening point of 86.1 DEG C heat debation temperature of 79.4 DEG C: light transmittance: 90%
Manufacturer: Arkema
PMMA (PMMA # organic glass acrylic |) /5001E/ Germany Gunther
Uses: other
Features: optical properties, good surface finish, scratch resistance.
Important beters: melt flow rate: 0.8 g/10min density: 1.19 g/cm3 notched impact strength: 20 tensile strength: 75 MPa VEKA softening point: 108 DEG C
Manufacturer: Plastics in Germany
PMMA (PMMA # organic glass acrylic |) /5002E/ Germany Gunther
Uses: other
Features: optical properties, good surface finish, scratch resistance.
Important beters: melt flow rate: 1.3 g/10min density: 1.19 g/cm3 notched impact strength: 20 tensile strength: 70 MPa VEKA softening point: 103 DEG C
Manufacturer: Plastics in Germany
PMMA (PMMA # organic glass acrylic /1800 Clear/ America RTP |)
Uses: other
Remark: electrostatic discharge protects against static electricity
Important beters: density: 1.15 g/cm3 notched impact strength: 53 bending strength: 58.6 MPa bending modulus: 1720 MPa
Manufacturer: American RTP company
PMMA (PMMA # organic glass acrylic |) /A6/ Germany Almaak
Uses: other
Remarks: low viscosity, good liquidity
Important beters: density: 1.19 g/cm3 water absorption: 0.6% notched impact strength: 1.5 tensile strength: 72 MPa, elongation at break: 4% VEKA softening point: 96 degrees of hot debation temperature: 90 degrees centigrade
Manufacturer: Almaak, Germany
PMMA (PMMA # organic glass acrylic |) /A7/ Germany Almaak
Uses: other
Characteristic note: good liquidity, medium viscosity
Important beters: density: 1.19 g/cm3 water absorption: 0.6% notched impact strength: 1.5 tensile strength: 74 MPa, elongation at break: 4% VEKA softening point: 104 degrees of hot debation temperature: 95 degrees centigrade
Manufacturer: Almaak, Germany
PMMA (PMMA # organic glass acrylic |) /J6/ Germany Almaak
Uses: other
Remarks: low viscosity, good liquidity
Important beters: density: 1.19 g/cm3 water absorption: 0.6% notched impact strength: 1.5 tensile strength: 72 MPa, elongation at break: 4% VEKA softening point: 96 degrees of hot debation temperature: 90 degrees centigrade
Manufacturer: Almaak, Germany
PMMA (organic glass acrylic PMMA # |) /CM-207G/ Zhenjiang CMO
Uses: other
Important beters: melt flow rate: 9 g/10min density: 1.19 g/cm3 absorption rate: 0.3% notched impact strength and elongation at break: 12: 10%: 114 MPa flexural strength hardness: 90 VEKA softening point of 115 DEG C heat debation temperature: 102 degrees
Manufacturer: Zhenjiang Chi Mei Company Limited
PMMA (organic glass acrylic PMMA # | /8N/ Evonik Degussa)
Uses: other
Important beters: melt flow rate: 1.9 g/10min density: 1.19 g/cm3 absorption rate: 0.3% notched impact strength: 2 tensile strength: 77.5 MPa elongation: 6% flexural modulus 3300 MPa VEKA softening point of 108 DEG C heat debation temperature: 98 degrees
Manufacturer: Germany Evonik Degussa company
PMMA (organic glass acrylic PMMA # | /6N/ Evonik Degussa)
Uses: other
Important beters: melt flow rate: 7.4 g/10min density: 1.19 g/cm3 absorption rate: 0.3% notched impact strength: 2 tensile strength: 70.5 MPa elongation: 4% flexural modulus 3200 MPa VEKA softening point of 96 DEG C heat debation temperature: 90 degrees
Manufacturer: Germany Evonik Degussa company
