Product Description
What is SMC composite?
Composite Sheet Molding Composite (SMC) is a compression molding composite often used for larger parts where higher mechanical strength is needed. SMC composite is a fiber reinforced thermoset material. As with BMC composite, thermoset SMC composite s a mixture of polymer resin, inert fillers, fiber reinforcement, catalysts, pigments and stabilizers, release agents, and thickeners and possesses strong dielectric properties.
Sheet Molding Compound (SMC) is a mineral filled, fiberglass reinforced polyester (vinyl ester and phenolic) based molding compound. SMC composite is a thermosetting material that undergoes an irreversible cross-linking reaction when exposed to the heat and pressure of the thermoset molding process (i.e. ambient delivery of material to a heated molding surface).A somewhat tacky, dough-like mass in its unmolded state, SMC composite is covered to an infusible, solid state using injection, compression and transfer methods.
Performance |
Unit |
Specification 4341 SMC-1 |
密度 Specific gravity |
g/cm3 |
1.75—1.95 |
吸水性 Water absorption |
mg |
≤20 |
模塑收缩率 Shrink rate |
% |
≤0.15 |
热变形温度(A法) Heat deflection temperature |
℃ |
≥240 |
冲击强度(简支架、无缺口)Izod impact strength notched |
KJ/m2 |
≥90 |
弯曲强度 Flexural strength |
MPa |
≥170 |
电气强度(90℃变压器油中)Dielectric strength (at 90℃ in oil) |
MV/m |
≥12 |
介质损耗因数(1MHz)Dielectric loss factor (at 1 MHz ) |
/ |
≤0.015 |
相对介电常数(1Mhz)Dielectric constant ((at 1 MHz ) |
/ |
≤4.5 |
耐电弧 Surface resistivity |
S |
≥180 |
耐漏电起痕指数Tracking resistivity (PTI) |
V |
≥600 |
燃烧性Flammability |
级 |
FV0 |
长期耐热性温度指数Long term heat resistance temperature |
/ |
155 |
Performance |
Unit |
Specification UP-SMC GF30,Q |
1 Mechanical preformance |
|
|
1.1 Tensile modulus of elasticity |
MPa |
≥10 000 |
1.2 The fracture tensile stress |
MPa |
≥60 |
1.3 Tensile strain |
% |
≥1.2 |
1.4 Modulus of elasticity in comperssion |
MPa |
≥9 500 |
1.5 Compressive strength |
MPa |
≥160 |
1.6 Bending modulus of elasticity |
MPa |
≥9 000 |
1.7 Bending strength |
MPa |
≥160 |
1.8Impact strength of simply supported beam |
kJ/m2 |
≥70 |
2 Heat property |
|
|
2.1 Load deformation temperature (Tff 1.8) |
℃ |
≥180 |
2.2 Linear thermal expansion coefficient |
10-6/K |
≤16 |
2.3 Temperature index(TI) |
/ |
≥130 |
3 Electrical Performance |
|
|
3.1 Electrical strength (normal in oil) |
kV/mm |
/ |
3.2 Relative permittivity(100 Hz) |
/ |
/ |
3.3 Dielectric dissipation factor (100 Hz) |
/ |
/ |
3.4 Insulation resistance |
Normal Ω |
1.0×106~1.0×109 |
3.5 Specific volume resistance |
Ω m |
1.0×106~1.0×109 |
3.6 Surface resistivity |
Ω |
1.0×107~1.0×1010 |
3.7 Proof Tracking Index (PTI) |
/ |
/ |
3.8 Resistance to electric mark |
Grade |
/ |
3.9 Arc resistance |
s |
/ |
4 Combustible and combustion characteristics |
|
|
4.1 Combustion |
Grade |
≥ V0 |
4.2 Incandescent rod |
Grade |
≥ BH2-10 |
4.3 Oxygen index |
% |
≥22 |
4.4 Glow-wire flammability test |
℃ |
≥650 |
5 Physical and chemical properties |
|
|
5.1 Density |
g/cm3 |
1.70~1.95 |
5.2 Molding shrinkage rate |
% |
≤0.14 |
5.3 Water absorption |
% |
≤0.2 |
6 Flow change and process characteristics |
|
|
6.1 Glass fiber content |
% |
30±2.5 |
7 Remark |
|
|
7.1 Features |
/ |
LS, FR,E4 |
SMC/BMC Application
Description |
Composite SMC (Sheet molding composite ) |
SMC composite series |
SMC-1 SMC-2 SMC-3 etc. According to customer's requirement |
Color |
Standard white ,gray ,black ,red (other colors can customed) |
Application |
Military & Aerospace, Transportation, Safety, Medical, Electrical, Oil & Gas, Alternative Energy, and Marine. |
SMC packing |
Carton size or wood box |
SMC Products |
Composite SMC manhole cover , meter box, insulator, chair, water tank, etc . |
Type |
Application |
SMC-3(electric) |
High mechanical strength products such as high/low voltage switch box, insulation plates |
SMC-2 (flame retardant) |
High mechanical strength and flame retardant products such as signal lamps, cable tray |
SMC-1 (high-strength) |
Special high mechanical strength products such as hammer handle |
BMC-2(general purpose) |
Non-electric products such as chair, water tank |
BMC-3(electric) |
Electric parts with common mechanical strength |
Our Company
Are you tired of finding approriate and credit supplier in china?
As one of the largest and most professional manufacturer and exporter specialized in SMC/BMC composites&its products, such as SMC BMC composites electrical manhole cover in China, ZHEJIANG YUEQING SMC&BMC MANUFACTURE FACTORY. assure you that we can supply products with the most competitive price, best quality and service. 27 years experice, AAA Credit Enterprise, China Famous Brand, attend all kinds of Exibitions around the world, we are able to make a difference. Welcome to visit our factory, ZHEJIANG YUEQING SMC&BMC MANUFACTURE FACTORY.
Hangzhou Wellborn Composites Co., Ltd is a leading SMC/BMC composite supplier in China, a export department of ZHEJIANG YUEQING SMC&BMC MANUFACTURE FACTORY(founded in 1988). We focus on providing quality BMC (DMC) and SMC composite series moulding compound and related product such as SMC composite manhole, mater box. Our company founded in 1988, with rich experience of manufacturing and handling BMC (DMC) and SMC composite and complete source and QC system.
SMC/BMC EN124 Manhole Covers Series
Cover size |
Clear opening |
Loading capacity |
Sealing/lock/hinge |
760 |
700 |
C250,D400 |
|
760 |
700 |
C250,D400 |
Lock and hinge |
700 |
630 |
C250,D400 |
|
700 |
660 |
A15,B125,C250 |
|
680 |
600 |
C250,D400 |
|
650 |
600 |
A15,B125,C250,D400 |
|
600 |
550 |
A15,B125,C250,D400 |
|
600 |
512 |
C250,D400 |
Lock,sealing,hinge |
500 |
450 |
A15,B125,C250 |
|
250 |
200 |
A15,B125 |
|
SMC/BMC Meter Box Series
SMC BMC Meter Box Model No. |
Outline Size (L x w x H) |
WB-E-001 |
680x700x200mm |
WB-E-002 |
930x865x250mm |
WB-E-003 |
539x797x150mm |
WB-E-004 |
704x797x150mm |
WB-E-005 |
539x797x150mm |
WB-E-006 |
854x797x150mm |
WB-E-007 |
704x797x150mm |
WB-E-008 |
854x797x150mm |
WB-E-009 |
300x290x95mm |
WB-E-010 |
415x510x105mm |
WB-E-011 |
560X510x105mm |
WB-E-012 |
660x740x120mm |
WB-E-013 |
860x910x160mm |
WB-E-014 |
860x740x120mm |
WB-E-015 |
1000x910x160mm |
WB-E-016 |
430x910x160mm |
WB-E-017 |
450x660x140mm |
WB-E-018 |
360x720x160mm |
WB-E-019 |
660x840x200mm |
WB-E-020 |
660x840x200mm |
WB-E-021 |
320x620x140mm |
WB-E-022 |
430x560x180mm |
WB-E-023 |
300x600x145mm |
WB-E-024 |
570x910x160mm |
WB-E-025 |
430x910x160mm |
Our Superiority
1. High quality with competitive price
2. Rich experience in manufacturing
3. Fast delivery with best service