Preparation details of anti - oxidation aluminum foil binder Industry news News Meixin New Materials Co., Ltd

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Formulation of anti - oxidation aluminum foil adhesive

Preparation method of anti - oxidation aluminum foil adhesive
(1) add people to the starch sodium, mixing evenly, then add sodium hydroxide adjusting the pH to 8 to 9, adding catalyst, oxidation treatment is carried out under the atmospheric pressure lh, then taking the optimum residual time grasp acid sodium, sodium sulfite and then through washing, leaching, impurities, and sodium hydroxide, borax in pasting the mix into a paste, That is, starch glue (starch adhesive base material).
(2) Use acrylic acid or oxalic acid aqueous solution to react with starch glue at room temperature and pressure, and stir for 10 min. When using acrylic acid aqueous solution, the pH of this mixture is 7, and when using oxalic acid aqueous solution, the pH is 7-- 8.5.
(3) Add formaldehyde resin and urea in the material (2), stir and mix evenly at room temperature and pressure, and the time is generally about 0. 5h, and the finished product is obtained.
Ingredient compatibility: the mass ratio range of each component in this product is as follows: starch 100, sodium hypochlorite 9, catalyst 1, sodium hydroxide 1-R2, borax 0.2, sodium sulfite appropriate amount, acrylic acid aqueous solution 0-10, oxalic acid aqueous solution 0-40, vein aldehyde resin 5^-10, urea 5^-10.
Starch can choose corn starch; The concentration of sodium subclasp is 8%-10%; The catalyst was prepared by 0.5% aqueous solution of ferrous sulfate and 0.5% aqueous solution of nickel sulfate. Acrylic acid aqueous solution concentration is 10%; The concentration of oxalic acid aqueous solution was 10%.
Application: This product is suitable for cigarette and high - grade food packaging aluminum paper.
Features: This product is easy to get raw materials, low cost; Good bonding effect, fast drying rate, non-toxic, non-corrosive; Stable performance, moistureproof, oxidation resistance. It can be kept for a long time.

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