هاردنر اپوکسی پلی آمید

AT44

امتیازی ثبت نشده

.هاردنر ها به عنوان جزء دوم عامل پخت را در پوشش ها انجام می دهد

ناموجود

مشخصات فنی

هاردنر اپوکسی پلی آمید
  • عمومی
  • کشور سازنده
    • هند
  • وزن برحسب گرم
    • 500gr
    • فروش هاردنر اپوکسی پلی آمید
  • نحوه ارسال
    • ارسال رایگان با پست پیشتاز درب منزل یا محل کار
  • برگه اطلاعات فنی کالا TDS
    • PRODUCT INFORMATION :
    • CRAYAMID 115 is a general purpose liquid amino polyamide resin.It is used in conjuction with suitable epoxy resins to produce both top coats and primers as well as thermosetting adhesives for wide variety of substrates. The main characteristics are it’s excellent resistance and good exterior durable properties and adhesion to metallic substrates. It is compatible with many synthetic resins, varnishes , oils and other media.
    • RECOMMENDATIONS FOR USE :
    • The selection of a particular grade of epoxy will depend upon the end use of the product.It is recommended that for high build coating it is always recommended to use low molecular weight epoxy. In solvent based coatings medium molecular weight and unmodified liquid epoxy resins may be used , while for adhesive applications either the unmodified or modified liquid epoxy resins are recommended. While the mixing ratio using CRAYAMID115 polyamides is not critical, optimum performance of the coating is achieved by stoichiometric mixing of the epoxy resin and CRAYAMID 115. The mix ratio is calculated on the basis of one Active Hydrogen Equivalent weight of the polyamide resin, will react with each epoxy group in the base resin. The AHEW of the polyamide resin CRAYAMID115 is typically 240 on solid resin. Considering that each epoxy reacts with one active hydrogen the mix ratio of CRAYAMID115 and an epoxy resin with epoxide
    • equivalent approx. 500 is calculated as follows;
    • Resin Mass of solid Resin Mass of Resin / Solution
    • CRAYAMID115 240g 240g
    • 75% Epoxy resin 1 500g 667g
    • 65:35 based on solid resin. Excess polyamide in a coating will Impart flexibility and adhesion at the expense of solvent resistance.
    • CURE RATE:
    • A 65:35 epoxy resin :CRAYAMID115 blend on solid resin will reach a tack free time in 30 mins. At 25°c. Film will obviously dry
    • more rapidly if higher molecular weight epoxy resins are used. An induction period to ensure complete compatibility is recommended.
    • Cure of epoxy::polyamide can be accelerated by the addition of catalysts and in particularly Tris ( dimethylaminomethyl) phenol types
    • which are recommended for use at a level of 1 – 5 % ( calculated by weight on total resin). It should be noted, that when catalysts are
    • employed pot life will be reduced and there may be an adverse effect on flexibility and colour.
    • POTLIFE :
    • Reaction between the epoxy resin and CRAYMID 115 will commence as soon as the reactants are mixed . A65:35 epoxy: CRAYAMID115 mixture on solid resin will have a limited pot life. Solvents will have a considerable effect on pot life e.g. alcohols tend to reduce it’s pot life where as esters and ketones tend to extend it. Since ketones and esters form complexes with amino polyamides on storage , these solvents should only be incorporated into the epoxy resin component.
    • ADHESIVES:
    • CRAYAMID 115 : epoxy resin systems demonstrate excellent adhesion to a wide variety of surfaces , such as glass , wood , ceramics, masonry, leather and plastic substrates. The pot life of a CRAYAMID 115 : epoxy resin adhesives will cure at ambient temperature but cure time can be reduced by heating to elevated temperature.
    • The resulting epoxy:polyamide mix ratio in this case is approx.
    • NOTES:
    • 1. Epoxy resins epoxide equivalent approx. 500 Araldite 6100 - Cieba Geigy limited.
    • 2. Unmodified epoxy resin epoxide equivalent 200 Epikote 828 - shell Chemicals.
    • 3. Modified epoxy resins epoxide equivalent approx. 200 Epikote 915 - Shell Chemicals
    • Non-volatile content, % @ 150°C (ISO 3251) 94 – 100
    • Viscosity in CPS at 40°C 45000 – 55000
    • Colour, Gardner scale (ISO 4630) ≤ 11
    • Acid value, mg KOH/g (ISO 3682) NA
    • Amine value, mg KOH/g 205 – 220 (HCL Method )
    • Density at 20°c 0.97
    • Typical hydrogen Equivalent Weight 240

نقد و بررسی

نظر شما

loader