Bicomponent dip solution for bonding polyester chord thread and rubber and preparation process of bicomponent dip solution
A polyester curtain and preparation process technology, applied in the directions of polyurea/polyurethane adhesives, adhesives, epoxy resin adhesives, etc., to achieve the effects of no three-waste emissions, improved H extraction force, and small particle size
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Embodiment 1
[0034] 1) Add 40g of polyoxypropylene glycol after dehydration, 5g of glycerin and 25g of dimethylol propionic acid into 170g of MDI, and react at 80~85℃ for 2.5h to obtain U 1。
[0035] 2) at u 1 Add 80g of caprolactam as a blocking agent, react at 80-90℃ for 3.5h, and get U 2 .
[0036] 3) at U 2 Add 13g of neutralizing agent triethylamine, react at 70~80℃ for 1h, get U 3 .
[0037] 4) Add 450 g of deionized water to U under stirring. 3 Component A with a solid content of 41% was obtained.
Embodiment 2
[0039] 1) Add 40g of adipic acid-butanediol polyester diol, 5g of glycerol and 30g of dimethylol butyric acid after dehydration into 170g of MDI, and react at 80~85℃ for 2h to obtain U 1 .
[0040] 2) at U 1 Add 85g of m-cresol as a blocking agent, react at 80~90℃ for 3h, and get U 2 .
[0041] 3) at U 2 Add 15g of neutralizing agent triethylamine, react at 70~80℃ for 1.5h, get U 3 .
[0042] 4) Add 480g deionized water to U under stirring 3 In, A component with a solid content of 40% was obtained.
Embodiment 3
[0044] 1) Add 40g of polyoxypropylene diol after dehydration, 7g of trimethylolpropane and 25g of dimethylol propionic acid into 120g of TDI, and react at 80~85℃ for 2h to obtain U 1 .
[0045] 2) at U 1 Add 81g of blocking agent caprolactam to it, react at 80~90℃ for 3.5h to get U 2。
[0046] 3) at U 2 Add 15g of neutralizing agent triethylamine, react at 70~80℃ for 3.5h, get U 3 .
[0047] 4) Add 390g deionized water to U under stirring 3 Among them, A component with a solid content of 40.5% was obtained.
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