Home > Products > Chemicals > Resin

The commodity name of polycarbonate (PC) and polybutylene terephthalate (PBT) blends or polycarbonate (PC) and polyethylene terephthalate (PET) blends manufactured by our company. PC/PBT is a blend of PC and PBT, usually supplied in the form of pellets after blending. If you simply mix the two materials, direct injection molding, poor effect, will appear stratification. PC/PBT has comprehensive characteristics of both PC and PBT, such as high toughness and geometric stability of PC, chemical stability, thermal stability and lubrication characteristics of PBT.

 

 

The advantage of PC is that it is rigid and flexible at room temperature, but in the case of high temperature, hot deformation is serious. The disadvantages are stress cracking and high viscosity. The advantage of PBT is that its rigidity is not affected by temperature and its deformation is small. In this way, the blended material PBT retains the advantages of both

 

 

Pt-pbt has high surface hardness, high rigidity and toughness, high resistance to high temperature shape and high resistance to stress and cracking. Its mechanical properties lie somewhere in between.

 

 

 

 

Significant properties of PC+PBT materials include:

 

 

• high toughness (even at low temperatures)

 

 

• good chemical resistance

 

 

• stress cracking does not occur easily

 

 

• good coating performance

 

 

• low moisture absorption USES

 

 

 

 

Application fields of materials include:

 

 

The application feature of automotive exterior trim is to reduce the weight of the car with plastic instead of steel. Automobile exterior trim includes: front and rear bumper, engine cover, radiator grille, fender board, car exterior door handle, rear guide board, automobile body adornment bar and so on. In addition to the function of interior decoration, the exterior decoration also requires high strength, high toughness, environmental condition resistance and impact resistance. Polyester (PBT) and polyester/polycarbonate alloy (PBT/PC), especially elastomer toughened PBT/PC alloy and PET/PC alloy are ideal materials for manufacturing automobile exterior trim, suitable for making automobile body plate, side guard board, fender board, door frame, etc.

 

 

Automobile exterior decoration material not only has the high weather resistance, the high heat resistance outside, also has the high surface glossiness and the high surface hardness characteristic, can satisfy each main engine factory to the material mechanics performance, the weather resistance ability request. The exterior decoration materials are mainly used in: exterior triangle, vertical column plate, rearview mirror, heat dissipation grille, electroplating door handle, electroplating trim, l age bracket, license plate, wheel cover and other automobile exterior ornaments that have high requirements on appearance and weather resistance.

 

 

PC+PBT is a plastic alloy, which keeps the chemical resistance of crystalline material PBT and is easy to be shaped. Gear box, bumper and products requiring chemical reaction and corrosion resistance, thermal stability, impact resistance and geometric stability. Its products are widely used in automobile bumper, automobile handle, automobile interior parts, vacuum cleaner housing, electronic components, communication equipment, lighting equipment, etc. PC/PBT has comprehensive characteristics of both PC and PBT, such as high toughness and geometric stability of PC, chemical stability, thermal stability and lubrication characteristics of PBT.

 

 

 

 

• automotive engineering

 

 

• electrical engineering/electronics

 

 

• lighting technology

 

 

• sports and leisure characteristics

 

 

 

 

Product color

 

 

• light ivory, opaque color range

 

 

• besides being brown and black, it also has a range of opaque standard colors. Special colors can also be modulated.

 

 

 

 

Appearance quality

 

 

• glossy or matte rigidity

 

 

• high tensile modulus: from 1800 MPa to 3900MPa per grade

 

 

 

 

Impact and fracture resistance

 

 

• high toughness and impact strength resistance to stress cracking even at low temperatures

 

 

• resistance to various chemicals and solvents

 

 

• all grade products have good heat-resistant properties, accuracy and stability

 

 

• good, obviously superior to semi-crystalline thermoplastic in chemical resistance

 

 

• good electrical insulation, especially for fuels, lubricants, solvents and detergents

 

 

• high resistance machinability

 

 

• free flow

 

 

• quick curing moisture absorption

 

 

• significantly less than semi-crystalline thermoplastic

 

 

 

 

(PC+PBT) blend - impact modification

 

 

 

 

1. Non-enhanced grade

 

 

 

 

Injection molding grade, high flow performance, low temperature has a high toughness application field: automobile bumper

 

 

Injection molding grade, low temperature has a high toughness application field: automobile bumper

 

 

Injection molding grade, medium flow performance, high toughness at low temperature, ideal coating performance application field: automobile body panel

 

 

Injection molding grade, high toughness at low temperature, ideal coating performance application field: automobile body panel

 

 

Injection molding grade, low temperature has excellent toughness, ideal coating performance

 

 

Applications: automotive interior and exterior body panels, bumpers, electrical/electronic power tools

 

 

 

 

2. Mineral filling grade

 

 

 

 

Injection molding grade, 10% mineral filling, low linear thermal expansion coefficient application field: automobile body panel

 

 

Injection molding grade, 20% mineral fill, low linear thermal expansion coefficient application: automotive external body panel

 

 

 

 

 

 

(PBT + PC) blend - impact modification

 

 

 

 

1. Non-enhanced grade

 

 

 

 

Injection molding grade, excellent chemical resistance, high toughness at low temperature, ideal coating performance application field: motorcycle body parts

 

 

 

 

 

 

(PC+PET) blend - impact modification

 

 

PC/PET alloy has good hardness and heat resistance, impact resistance, high strength, high gloss, high toughness (even in low temperature environment), good chemical resistance, resistance to stress cracking, good coating performance, low moisture absorption.

 

 

 

 

1. Non-enhanced grade

 

 

Injection molding grade application field: automobile radiator grille

 

 

2. Mineral filling grade

 

 

Injection molding grade, 10% mineral filling,

 

 

Low linear thermal expansion coefficient application: automotive body panel injection molding grade, 20% mineral fill

 

 

Linear thermal expansion coefficient is extremely low

 

 

Application field: automobile body panel