Method of coating
A coating and polymer coating technology, applied in chemical instruments and methods, coatings, dyeing methods, etc., can solve problems affecting the integrity of the substrate
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Embodiment 1
[0199] Embodiment 1: Water-based A5B.HCl (A5B, acid dye, telonrubine) promotes para-aramid fiber to nitrile rubber (nitrole butadiene rubber, NBR) adhesion
[0200] A 10% aqueous solution of A5B.HCl was prepared by dissolving A5B monomer (10 g) in a mixture of 1M hydrochloric acid (32 mL, 1.1 equiv) and water (58 mL).
[0201]
[0202] To this solution was added thermal initiator Vazo 56 (0.7 g) and stirred until completely dissolved.
[0203] The para-aramid ( registered trademark) in the above solution and dried at ambient temperature for 10 minutes.
[0204] The coated fabric was placed in a curing oven at 165°C for 10 minutes.
[0205] The nitrile rubber was placed on the cured fabric and placed in a hot press at 165° C. for 10 minutes.
[0206] The assembled samples were then allowed to cool to ambient temperature and tested for peel resistance (T-peel test) on an Instron 3343 tensiometer according to standard method ASTM D 1876-08.
[0207] The peel resistanc...
Embodiment 2
[0208] Example 2: Solvent-Based A5B Promotes Adhesion of Para-Aramid to Nitrile Rubber (NBR)
[0209] For comparison purposes, the experiment described in Example 1 was repeated, but using an equivalent solvent-based A5B system.
[0210] For this, a 10% solution of A5B in MEK (Methyl Ethyl Ketone) was prepared by dissolving A5B (10 g) in MEK (90 ml).
[0211] To this solution was added the thermal initiator dicumyl peroxide (0.7 g) and stirred until complete dissolution.
[0212] The solution was coated onto para-aramid ( registered trademark), and bonded to nitrile rubber in the same manner as described in Example 1.
[0213] The peel resistance of the sample was measured to be 1510 N / m.
Embodiment 3
[0214] Embodiment 3: Aqueous cationic A5S.HCl promotes polyester to ethylene propylene diene monomer (Ethylene Adhesion of Propylene Diene Monomer, EPDM) Rubber
[0215] A 10% aqueous solution of A5S.HCl was prepared by dissolving A5S monomer (10 g) into a mixture of 1 M hydrochloric acid (22 ml, 1.1 equivalents) and water (68 ml).
[0216]
[0217] To this solution was added thermal initiator Vazo 56 (0.7 g) and stirred until completely dissolved.
[0218] The polyester fabric was dipped into the above solution and dried at ambient temperature for 10 minutes.
[0219] The coated fabric was placed in a curing oven at 165°C for 10 minutes.
[0220] EPDM rubber was placed on the cured fabric and placed in a heat press at 165°C for 10 minutes.
[0221] The assembled samples were then allowed to cool to ambient temperature and tested for peel resistance (T-peel test) on an Instron 3343 tensiometer according to standard method ASTM D 1876-08.
[0222] The peel resistance of...
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