Adhesive composition and rubber reinforcing material
A composition and adhesive technology, applied in the field of No. 10-2020-0043565, can solve problems such as inability to ensure adhesive strength, achieve excellent adhesive strength, improve physical properties, and reduce fire risk
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preparation example 1
[0190] Preparation Example 1: Preparation of Polyurethane Dispersion in Water
[0191] A polyester-based polyol (weight average molecular weight: about 2,000), a diol (1,6-hexanediol), and an ionomer (DMBA: dimethylolbutyric acid) were charged into a reactor, and the mixture was then charged Stir at 75±5°C for 4 hours. Then, aliphatic isocyanate (H 12 MDI: dicyclohexylmethane-4,4'-diisocyanate) was reacted for 2 hours to prepare a prepolymer. The reaction temperature of the prepared prepolymer was lowered to 60°C, and then a neutralizing agent (TEA: triethanolamine) was added to the solvent for neutralization. At this time, a stirrer is used for dispersion, and the dispersion is performed while maintaining the RPM of the stirrer at 1,000 to 1,500. After the dispersion was completed, the solvent (acetone) was removed from the prepolymer by reduced pressure. Then, distilled water was added to the neutralized prepolymer so that the solid content was 60% by weight, and the mix...
preparation example 2
[0192] Preparation Example 2: Compositions of Preparation Examples and Comparative Examples
[0193] Mixing and stirring were performed under the same conditions at the contents (% by weight) shown in Table 1 below to prepare compositions of Examples and Comparative Examples. Specifically, the respective components were mixed and stirred at about 20°C for 24 hours.
[0194] [Table 1]
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[0197] [Table 2]
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preparation example 3
[0200] Preparation Example 3: Production of Raw Material Cords and Tire Cords
[0201] Using aramid yarn (1,500de) and nylon yarn (1,260de) to prepare two (11, 12) primary twisted yarns (Z direction) with 360TPM twists, then two primary twisted yarns with 360TPM A second twist (S direction) is carried out together to make a plied yarn (1,500de A / 1,260de N). The thus-produced plied yarn was used as the raw material cord 10 .
[0202] The coating layer 20 is formed on the raw material cord 10 to manufacture the tire cord 30 . Specifically, a raw material cord composed of aramid and nylon was dipped in the first coating liquid, and then treated at a drying temperature of 150° C. and a curing temperature of 240° C. for about 1 minute, respectively, to form the first coating liquid. layer 21, thereby imparting reactive groups to the raw material cord. At this time, a first coating liquid was prepared by mixing the epoxy compound and the isocyanate compound as part of the compone...
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