Bicomponent dip solution for bonding polyester chord thread and rubber and preparation process of bicomponent dip solution
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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
Active Publication Date: 2013-04-10
SICHUAN AILUN TECH
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Description
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Problems solved by technology
The common problems of these formulas during use are mainly: (1) DuPont D-417 formula or improved formula uses caprolactam-blocked MDI as the base material, which has poor water solubility and is dispersed and suspended in water by the effect of emulsifiers. Generally, it is placed for 30 minutes The above will form a suspension with uneven concentration up and down, and even precipitate
Therefore, it must be stirred evenly before use, which is inconvenient to operate and prone to quality problems
(2) The DuPont D-417 formula or improved formula uses a two-component dipping solution, one of which uses an imported special water-based epoxy resin, which is not only expensive, but also has a good dipping solution. The glue must be used within 72 hours, and the adhesive force will decrease after 72 hours
Due to the large suspended particles in the suspension, the particles adhere to the cord during gluing, and the particles are easy to fall when blown by hot wind during drying, resulting in uneven gluing and resulting in fluctuations in the adhesive force between the cord and rubber Larger, resulting in unstable performance of the final product
Among them, the price of special water-based epoxy resin has risen rapidly in recent years, resulting in limited use
Method used
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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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Abstract
The invention provides a bicomponent dip solution for bonding a polyester chord thread and rubber and a preparation process of the bicomponent dip solution. The dip solution is composed a component A and a component B, wherein the component A comprises the raw materials in parts by mass: 120-170 parts of diisocyanate, 40-60 parts of dihydric alcohol, 5-7 parts of trihydric alcohol, 25-30 parts of hydrophilic solvent, 80-85 parts of sealing agent, 13-15 parts of neutralizer and 300-500 parts of deionized water, and the component A is prepared through processes such as pre-polymerization, sealing, neutralization, emulsification and the like; and the component B comprises 100 parts of epoxy resin, 3 parts of modifying agent, 1 part of methanoic acid and 1 part of emulsifier, and the component B is prepared through processes such as modification, neutralization, emulsification and the like. The product is good in stability, strong in bonding power, convenient to use, simple in preparation process, easy to operate and environment-friendly. The product is mainly used for bonding the polyester chord thread and the rubber.
Description
Technical field: [0001] The invention relates to a two-component adhesive and its preparation process, in particular to a two-component dipping solution for polyester cord and rubber bonding and its preparation process. Background technique: [0002] Polyester cord is an excellent skeleton material for rubber products, widely used in radial tires, conveyor belts and other fields. However, due to the low surface activity of the polyester cord, the bonding effect between the interface between the polyester cord and the rubber is not good. Carry out dipping treatment. At present, most of the dipping solutions used by domestic counterparts are the formula or improved formula of DuPont D-417. The common problems of these formulas during use are mainly: (1) DuPont D-417 formula or improved formula uses caprolactam-blocked MDI as the base material, which has poor water solubility and is dispersed and suspended in water by the effect of emulsifiers, and generally placed for 30 m...
Claims
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Application Information
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