Wednesday, August 30, 2017

How to Choose Antioxidants, UV Absorber, Light Stabilizers for Plastic ?

Table of Content

  1. How does polymer stabilizer & antioxidant work？
  2. How to choose antioxidants,uv absorber,light stabilizer for plastic?

1. How does polymer stabilizer & antioxidant work？

Mechanism of polymer stabilizer as photo below, polymer stabilizer include heat stabilizer and uv absorber / HALS (hindered amine light stabilizer), heat stabilizer sub divided into phenolics,amines,phosphites,thioesters,metal deactivates.

    2. How to choose antioxidants,uv absorber,HALS for plastics?

    Selection of plastic antioxidants
    here are list typical use of antioxidant,uv absorber,light stabilizer for each material,the information below are not to be construed as a warranty or representation for which we assume legal responsibility.
    Users should undertake sufficient verification and testing to determine the suitable for their own particular purpose of any information or products referred to herein.

    if any questions when choosing these additives for your material,please contact our support team by (Click Here).
    For Antioxidants (Click Here),jump to antioxidant product page
    For UV Absorber/Light Stabilizer (Click Here), jump to antioxidant product page
    ApplicationsMaterialAntioxidantUV Absorber/HALS
    POLYOLEFINPP thick section1010+DSTDP622+326
    PP thin section
    Fiber & strip    		PP fiber:1425
    1010+168/DSTDP    		Fiber:
    770 without heat
    622with heat
    Strip:791
    HDPE1010+168791 ,944
    LDPE1010622+531
    LLDPE1010+168944/622+531
    PEXTMB 6/
    PB1010+ DLTDP
    STYRENICSPS1076UV P+770
    SAN1076+168UV P+770
    IPS245,1076UV P+770
    HIPS245/
    MBS1076+DLTDP/
    ABS245+DLTDPUV P+770
    SIS1076/1010
    0.1-0.5%    		UV P+770
    Hotmelt adhesive 213 /770
    pressure sensitive adhesion
    213/770
    SBS1076/1010
    0.1-0.5%    		UV P
    Adhensive 1010+626+136
    POLYURETHANEPUR1076+5057
    Aromatic amines＜0.05%    		leather,elastomer,textile,sole,adhesive,
    fiber need uv absorber,
    Sole:UV P+770 +1010
    Film:770 +UV P
    ENGINEERING PLASTICSPC1076+168UV P,1577
    POM245,1010622+234
    PET10101577
    PET fiber:770 +329
    PBT2451577
    UPR/329
    Aliphatic PA245/1098+168944,770
    TPEE329
    TPU1010/245+
    DLTDP+445    		/
    PMMA0.05-0.2% UV P+770
    Not always use together
    PPE/UV P or 770
    PSU//
    PVCRPVC/UV P or 320
    PPVC/531+944
    ELASTOMERBR1520320
    IR565320
    SBR1520+TNPP320
    NBR1520+TNPP
    EPR,EPDM1010329+770
    Thermoplastic rubber
    TPO3052+168
    X-SBRCas 31851-03-3
    Cas 26780-96-1


    Selection of antioxidants for use with UV absorber

    Care is needed in selecting anti-oxidants for use in combination with effective light-stabilization systems. High molecular weight stabilizers provide high levels of heat stability at normal application temperature. To avoid colour shifts (especially yellow discolouration), BHT-free resins should be used with HALS formulations. Sulphur-containing organic compounds used as thio-synergists are known to reduce the light stability level conferred by HALS, and high levels should be avoided.
    PE food
    contact    		PEgreenhouse filmPP coloured food contact(General
    purpose    		PP tapes, mouldingsPP coloured food contact
    Base resinPHPEPPPHPPPP
    HMW-HALSYesYesYesYesLow MWYes
    BenzophenoneYesYesYes
    food contactYesYesYesYesYes
    Thermal
    stabilization    		goodgoodVery goodVery goodGoodLimited
    Application and let-downHeavy-duty sticks:
    1.5- 2.5%: film: 1.25-1.75%,
    2.5-3.5%(24m); mouldings:
    1.5-3%    		Heavy-duty
    sacks:
    1.5- 2.5%: greenhouse film:
    1.25-1.75%.
    2.5- 3.5 (24m)    		Tapes:
    1-3%;
    fibre: 1-3%: mouldings:
    0.5-2.5%    		Shrink wrap: 0.75-1.5%; greenhouse film:1-1.5%;
    HDPE crates:
    0.25-0.5%;
    mouldings:
    0.5-2.0%    		Tapes:
    0.5-2.0%; mouldings: 0.5-2.5%    		Food crates: 0.5-1.5%; tapes:
    1-3%; black tapes: 1-

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