Extruded Plastic PP/PS Sheet

 Extruded Plastic PP/PS Sheet

I. PP Description

PP looks like PE, but PP is more transparent, lighter. PP is flammable. PP own low water absorption, low gas permeability. PP has good mechanical properties, the tensile strength and yielding strength are better than PE, PS and ABS. PP resists stress cracking and easy to weld, but low notched impact strength, the finished parts shall avoid sharp corners and notches. The temperature ranges between +5℃ and 100℃.

II. PP Characteristics:

1. Low density  

2. Resistance to bending fatigue

3. Good heat resistance

4. High tensile strength

5. High surface strength

6. High chemical resistance

7. Food safe

Disadvantages:

1. Low oxidation resistance

2. Low abrasion resistance

3. Easy to brittle at low temperature

4. HF-welding not possible

5. Difficult to varnish and glue

6. No weather resistance

III. PP Applications

1. Pipeline, medical equipment , stewing endurance tableware, food packaging,

2. Galvanize tank, acid-proof and alkali resistance containers, spraying loading frame.

3. Home appliances shell, wire and cable etc.

 Ⅰ.PS   Introduction

Polystyrene   is  synthetic   polymers  which   made  by  the  styrene  monomer   and    free    radical   polymerization. It is  a  transparent  thermoplastic, having  a  higher   glass  transition  temperature  of    100℃,polystyrene  own  acid  and  low-energy  alcohol resistance, that  may softened by many  hydrocarbons, ketones, and  other  higher fatty lipid erosion, and  dissolved  in   aromatic  hydrocarbons.

 II. PS   Strength:

Advantages:

1.excellent  electrical insulation,It's  a  good high- frequency  insulation  materials,and  have excellent arc         resistance .

2.Polystyrene  is high  transparent  material   with high   surface  gloss.

3.Polystyrene  can  be  freely colored,easy printing.

4.Odorless,non-toxic,without fungus growth.

Disadvantages:

1.Poor mechanical  properties, hard   and  brittle, and  easily   stress cracking  by   solvents corrosion.

2.Low  surface hardness, easy  to  scratch;poor  heat   resistance ,low heat  distortion   temperature.

 Ⅲ. PS  Application

1.Produce  disposable    containers  which   need  to  withstand  the  temperature of boiling water,and          disposable foam lunch boxes.

2.It  can be widely  used  in  light   industry  market, household decorasion,  lighting instruxtions   and   packaging  and   so  on .

3.It  is   good  electrical  insulation  and   thermal  insulation  materials,it  can  produce   a   variety  of  instrument  enclosures, lampshade, optical  chemical  equipment parts, transparent  film capacitor  dielectric layer.