Elastomer Blends

7/28/2019 Elastomer Blends

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POLYMER BLENDS

1. NR + PBR } PRIMARILY FOR TYRE COMPOUNDS FOR

2. NR + SBR + PBR } IMPROVEMENT IN ABRASION PROPERTY.

3. EPDM ADDED TO ELASTOMER ------ IMPROVED OIL AND

OZONE RESISTANCE

4. NITRILE ADDED TO ELASTOMER -- IMPROVED OIL

RESISTANCE

5. CHLOROPRENE MIXED

WITH ELASTOMER -- YIELDS IMPROVED FLAME RESISTANCE

6. POLYBUTADIENE IS USED FOR LOW TEMPERATURE PROPERTY

7.BUTYL RUBBER --- IMPARTS LOW GAS PERMEABILITY

8. HIGH SLYRENE SBR MIXED --- USED IN, FOOTWEAR

WITH NR, SBR, NITRILE AND SPORTING GOODS,

SYNTHETIC POLYISOPRENE RUBBER KITCHEN DRAIN

BOARDS, RUBBER

MATS, FLOOR TILESETC.

9. BLOCK COPOLYMER BLENDS

THE PRIMARY BLOCK CO POLYMER NAMELY AB OR ABA TYPE

GIVES GOOD MECHANICAL COMPATIBILITY WITH POLYPROPYLENE,

HIGH AND LOW DENSITY POLYETHYLENE. AB TYPE STYRENE DIENE

BLOCK CO-POLYMERS HAVE COMMERCIAL UTILITY IN VARIOUS

ELASTOMERS LEADING TO APPLICATIONS IN WIRE AND CABLE,

ADHESIVES, SHOE SOLE AND HEELS ETC. STYRENE BUTADIENE STYRENE BLOCK CO-POLYMER COMPATIBILIZES BLENDS OF

POLYPROPYLENE AND POLYSTYRENE THUS OFFERING POTENTIAL

FOR REPROCESSED SCRAP MATERIALS.


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2.

DEFINITIONS

POLYMER ALLOYS : POLYMER BLENDS WITH MODIFIED

INTERFACIAL PROPERTIES AND / OR

MORPHOLOGY

POLYMER BLENDS : MIXTURE OF CHEMICALLY DIFFERENT

POLYMER AND / OR COPOLYMERS.

MISCIBLE PB : PB BEHAVING AS A SINGLE PHASE SYSTEM

DOWN TO MOLECULAR LEVEL OF DISPERSION

COMPATIBLE PB : TERM INDICATING COMMERCIALLY

ATTRACTIVE PAB: USUALLY SYSTEM

HOMOGENOUS TO THE EYE WITH ENHANCED

PHYSICAL PROPERTIES.

COMPATIBILISATION : ANY PHYSICAL OR CHEMICAL ACTION

WHICH RESULTS IN STABILISATION,

(PREVENTION TO SEPARATE) OF PB

ENGINEERING POLYBLENDS: PA OR PB EXHBITING PROPERTIES AND /

OR CONTAINING ENGINEERING POLYMER,

AT LEAST ONE COMPONENT OF THE BLEND.


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3.

1. POLY (VINYL CHLORIDE) BASED POLYMER BLENDS

-------------------------------------------------------------------------------------------------------------------------MODIFIER PROPERTY APPLICATIONS

MODIFICATION

--------------------------------------------------------------------------------------------------------------------------

BUTADIENE / PERMANENT WIRE AND CABLE

ACRYLONITRILE PLASTICIZATION INSULATION, FOOD

CONTACT.

ETHYLENE / PERMANENT POND LINERS,

VINYL ACETATE PLASTICIZATION SHOE SOLES,

AUTOMOTIVEINTERIORS.

POLY (BUTYLENE PERMANENT HOSE JACKETS,

TERIPHTHALATE) PLASTICIZATION UPHOLSTERY

POLY (TETRAHYDROFURAN)

(AB) N BLOCK COPOLYMERS

THERMOPLASTIC

POLYURETHANE PERMANENT FOOD CONTACT

BASED ON CAPROLACTONE PLASTICIZATION AND WIREPOLYOLS INSULATION

ABS IMPROVED TOUGHNESS APPLIANCE

AND PROCESSIBILITY HOUSINGS,

COMMUNICATION

RELAYS.

PMMA IMPROVED TOUGHNESS MASS TRANSIT

AND PROCESSIBILITY INTERIOR

METHYLSTYRENE / INCREASED HEAT DARK EXTERIOR

ACRYLONITRILE (69 / 31) DISTORTION TEMP. SIDING PIPE FOR

HOT FLUIDS.

CHLORINATED POLYETHYLENE PERMANENT SHOE SOLES

(42 WT% C1 -) PLASTICIZATION

CHLORINATED POLYETHYLENE IMPACT MODIFIER PIPE AND


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(42 WT% C1 -) EXTERIOR SIDING

4.

2. STYRENE BASED POLYMER BLENDS

----------------------------------------------------------------------------------------------------------STYRENE POLYMER PROPERTY APPLICATIONS

BASED POLYMER MODIFIER MODIFICATION

---------------------------------------------------------------------------------------------------------------------------

HIGH IMPACT PPO INCREASED TOUGH APPLIANCE COMPO-

POLYSTYRENE NESS AND HEAT NENTS BUSINESS

DISTORTION TEMP. MACHINE HOUSINGS,

AUTOMOTIVE DASHBOARDS, PUMP

COMPONENTS.

ABS POLYCARBONATE INCREASED TOUGH- AUTOMOTIVE INTER-

NESS AND HEAT IOR, ELECTRICAL

DISTORTION TEMP. HOUSING MASS

TRANSIT INTERIOR.

ABS POLYSULFONE INCREASED TOUGH- FOOD SERVICE TRAYS

NESS AND HEAT PLUMBING FIXTURES,

DISTORTION TEMP BUSINESS MACHINES

AND ELECTROPLATE APPLIANCES

BILITY.

ABS THERMOPLASTIC INCREASED TOUGH- AUTOMOTIVE FILLER

POLYURETHANES NESS AND DURABILITY PANELS, AIRCRAFT

SEAT TRACK.

ABS METHYLSTYRENE INCREASED HEAT APPLIANCES

ACRYLONITRILE DISTORTION TEMP

(69/31)

POLYSTYRENE PMMA TRANSLUSCENT DECORITIVE


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APPEARANCE EFFECTS

5.

3. ACRYLATE BASED POLYMER BLENDS:

---------------------------------------------------------------------------------------------------------------------------ACRYLATE POLYMER PROPERTY APPLICATIONS

POLYMER MODIFIER MODIFICATION

---------------------------------------------------------------------------------------------------------------------------

PMMA PVDF IMPROVED CHEMICAL WEATHERABLE FILM

RESISTANCE

PMMA PET LOWER COST, LOWER ELECTRICAL/WARPAGE ELECTRONIC

PMMA AND UNSATURATED LOWER SHRINKAGE, SHEET MOLDING

COPOLYMERS POLYMERS LOW PROFILE COMPOUNDS

ADDITIVE

4. POLYESTER AND POLYCARBONATE BASED POLYMER BLENDS

---------------------------------------------------------------------------------------------------------------------------

POLYESTER POLYMER PROPERTY APPLICATIONS

POLYCARBONATE MODIFIER MODIFICATION

---------------------------------------------------------------------------------------------------------------------------

PBT PET IMPROVED GLOSS ELECTRICAL/

LOWER COST ELECTRONIC

POLY UNSATURATED LOWER SHRINKAGE SHEET MOULDING

(CAPROLACTONE) POLYESTERS LOW PROFILE COMPOUNDS

ADDITIVE

POLYCARBONATE POLYETHLENE IMPROVED ENERGY AUTOMOTIVE

ABSORPTION

PBT POLY IMPROVED FILLER ELECTRICAL/

(HYDROXYETHER ACCEPTANCE ELECTRONIC

OF BISPHENOL A)


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6.

POLYOLEFIN BLENDS:

---------------------------------------------------------------------------------------------------------------------------POLYOLEFIN POLYMER PROPERTY APPLICATIONS

MODIFIER MODIFICATION

---------------------------------------------------------------------------------------------------------------------------

POLYPROPYLENE EPDM IMPROVED WIRE AND CABLE

FLEXIBILITY INSULATION, AUTO-

IMPROVED MOTIVE BUMPERS AND

TOUGHNESS FASCIA, HOSE GASKET

SEALS, WEATHERSTRIPPING

HDPE BUTYL IMPROVED SAME AS PP / EPDM

RUBBER FLEXIBILITY

IMPROVED

TOUGHNESS

LDPE, HDPE ETHYLENE IMPROVED ESCR, SAME AS PP FILM

COPOLYMERS FILLER ACCEPTANCE

TEAR RESISTANCE

FLEXIBILITY

POLYBUTENE 1 POLYPROPYLENE IMPROVED FILM

CRYSTALLIZATION

RATE


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7.

POLYVINYL CHLORIDE

PVC IS FORMED FROM VINYL CHLORIDE MONOMER BY ADDITION

POLYMERISATION. THE POLYMER ISATION METHOD USED TO MANUFACTURE THE

RESIN COMMERCIALLY ARE:

1. SUSPENSION

2. BULK

3. EMULSION

4. SOLUTION.

THE PARTICLE SIZE OF A PARTICULAR PVC RESIN IS DESIGNED TO SUIT THE

INTEDDED USE OF THE POLYMER. THE GENERAL PARTICLE SHAPE OF ALL RESIN

TYPES SHOULD BE SPHERICAL SO THAT FREE ROLLING MOTION OCCURS IN THE

HANDLING AND PROCESSING OF THE FINAL COMPOUND. SINCE PVC ITSELF IS

TOUCH, BRITTLE AND HAS POOR HEAT STABILITY, IT MUST BE COMPOUNDED

WITH OTHER CHEMICALS TO PRODUCE PROPERTIES REQUIRED FOR THE ENDAPPLICATION. PLASTICIZERS NAMELY DOP AND DBP TYPE IS COMMONLY USED.

PVC IS SENSITIVE TO HEAT AND LIGHT. IT IS NECESSARY TO USE STABILISERS, I.E.

CADMIUM AND BARIUM TYPE. PVC IS COMPATIBLE WITH NITRILE RUBBER. THE

BLEND GIVES EXCELLENT OZONE, OIL AND FLAME RESISTANCE PROPERTY.


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8.

NBR / PVC BLENDING

1. NBR CAN BE BLENDED WITH PVC. BOTH ARE COMPATIBLE SIMILAR TYPE

OF PLASTICISER. THE PRODUCT IS BETTER OZONE, FLAME RESISTANT AND

WEATHER AGEING.

2. IN ORDER TO OBTAIN OZONE RESISTANCE PROPERTY, MINIMUM 30% PVC

SHOULD BE BLENDED WITH NITRILE RUBBER. NITRILE / PVC BLENDS IS

WIDELY USED IN FUEL HOSE,CONVEYOR BELT COVER, AND PRODUCED FOROUTDOOR APPLICATIONS.

3. FOR DRY BLENDING MIXING PVC RESIN IS NORMALLY BLENDED WITH

NITRILE IN POWER FORM TO GET BETTER HOMOGENITY. THIS TYPE OF

BLENDING IS USED IN SHOE SOLF COMPOUND TO IMPROVE THE TEAR

RESISTANCE AND LOW TEMPERATURE PROPERTY.


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9.

ABBREVIATIONS USED FOR DIFFERENT POLYMERS

PVC - POLYVINYL CHLORIDE

PE - POLYETHYLENE

PP - POLYPROPYLENE

PA - POLYAMIDE

PET - POLYETHYLENE TEREPHTHALATE

PPE - POLYPHENYLENE ETHER

ABS - ACRYLONITRILE BUTADIENE STYRENE

EPR - ETHYLENE PROPYLENE RUBBER

EPDM - ETHYLENE PROPYLENE DIENE MONOMER

PBR - POLYBUTADIENE RUBBER

HIPS - HIGH IMPACT POLYSTYRENE

SMA - STYRENE MALEIC ANHYDRIDE

SAN - STYRENE ACRYLONITRILE

PC - POLYCARBONATE

170

PEI - POLYETHERIMIDE

CPE - CHLORINATED POLYETHYLENE

PS - POLYSTYRENE

EVOH - ETHYLENE VINYL ALCOHOL

PBT - POLUBUTYLENE TEREPHTHALATE

PPS - POLYPHENYLENE SULFIDE


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Elastomer Blends

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