PBT Sheet and rod

1.Introduction:

      PBT is a strong, stiff engineering plastic with excellent machining characteristics, chemical resistance, and wear properties of bearings. Guangzhou Engineering Plastics Industries (Group) Company has studied and applied this material in many industries for many years. And we know thatPBT is often used for food processing machinery applications when low moisture absorption, resistance to staining, or resistance to cleaning chemicals is required. It is easier to machine than PET, and also has a higher continuous working temperature (116°C).

2.Characteristics:

♦ Excellent chemical resistance, good oil resistance

♦ Low moisture absorption

♦ Excellent wear resistance, even in wet environments

♦ Excellent machining characteristics

♦ Stain resistance

♦ Internally lubricated bearing grades available

3. Application:

♦ Valves, Filler pistons

♦ Bearings and bushings

♦ Gears, Wear pads

♦ Packaging, machinery parts

♦ Food processing, machinery components

♦ Wheels, Rollers

♦ Electrical components

I. PVC  Introduction

PVC  is  made  up  from polyvinyl chloride  which is the  most  widely  used  among all  ethylene.This  kind   of   plastic  is  renowned  for  impressive  hardness  and mechanical  strength.However,its mechanical  strength   will be  enhanced  by increasing molecular  weight,and will be  lowered  by  increasing temperature.

CPVC(chlorinated polyvinyl  chloride) is  a  new kind  of  industrial  plastic  produced  by  chlorination  of  polyvinylchloride  resin.During this process,molecular structure  of  PVC  is  amplified  in  terms  of irregularity and chemical polarity,resulting in more  prominent solubility  and  chemical  resistance  to heat,acids,alkalis,salts and axidizing agents,etc.

Furthermore,compared with  PVC  sheet  and  rod,CPVC sheet has  more  chlorine  content  which  is increased from 61.7% to the range of 72 to 75%.Meanwhile,Vicat softening point  is promoted  from  the range of 60℃ to 72℃ to the range of 85℃ to 90℃.The  working temperature for long-term use exceeds 85℃.

II. PVC   Strength :

1.Outstanding   mechanical   strength  and  stiffness.

2. Good  electrical  insulation  and  flame retardancy.

3. Easy to  weld and print.

4. No water  absorption and no deformation.

5. Ultraviolet-proof.

6. Excellent  chemical and corrosion  resistance.

III. PVC  Applications

1.Pollution  handling    equipment.

2.Equipment  for  electroplating and  chemical   processing.

3.Manufacture  equipment   for   semi-conductor.

4.Maching  parts  and  base  plate.

5.Scrubber ,kitchen ventilator  and  other   protective    devices.

6.Packaging  for  food,medicine  and    cosmetics.

7.Injection molded   products  such  as  pipes,valves, housing  for   office  supplies and electroinc  products.