Flame-retardant UV-cured acrylate pressure-sensitive adhesive
An acrylate and acrylate technology, used in the field of pressure-sensitive adhesives, can solve the problems of impermeability of the adhesive layer, low cohesion of the pressure-sensitive adhesive, and inability to achieve cross-linking curing, etc. The effect of good bond strength
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[0071] The preparation method of the above-mentioned polymer can be carried out by a solution, emulsion or bulk polymerization process using a free radical polymerization method.
[0072] The preparation method of the above-mentioned flame retardant UV-curable acrylate pressure-sensitive adhesive can be as follows: the polymer is subjected to solvent removal, latex coagulation or pure polymer melt processing, and then mixed with other raw materials (curing agent, photobase generator, photosensitizer, or by adding other raw materials (curing agent, photobase generator, photosensitizer, flame retardant, etc.) to the polymer solution before removing the solvent from the polymer, and then extracting Prepared by removing solvent.
[0073] The above-mentioned flame retardant UV-curable acrylate pressure-sensitive adhesive may also contain other raw materials, such as solvents, antioxidants, etc.; the above-mentioned flame-retardant UV-curable acrylate pressure-sensitive adhesive can...
Embodiment 1
[0091] Preparation of photobase generator PBG
[0092] Prepare according to the method described in the document Macromolecules, 2012, 45(5): 2219-2224, and the specific steps are:
[0093] 0.77g of thiosalicylic acid was added to 35mL of concentrated sulfuric acid to make it fully dissolved, 2.52g of phenylthioacetic acid was added in batches, the addition was completed within 30min, stirred at room temperature for 24h, then the reaction was dropped in water, suction filtered, and the filter cake After washing three times with ether, dissolve it in hot dioxane, take the supernatant liquid and add water to separate out the precipitate, filter and dry to obtain a yellow solid powder referred to as TX-S-COOH;
[0094] Weigh 0.18g of TX-S-COOH, add 20mL of water and 0.08g of TBD in turn, stir at room temperature for 10min, take the supernatant after centrifugation of the reaction solution, wash with ethyl acetate until the organic layer is colorless, and extract the aqueous layer...
Embodiment 2
[0096] Preparation of polymer Polymer-1
[0097] A 1L four-neck round-bottom flask was equipped with a thermometer, a condenser, an overhead mechanical stirrer, an addition funnel and a nitrogen inlet connected to a temperature control device. Before the reaction started, the device was purged with nitrogen for 15 minutes, and 2-EHA150.0g, BA47 .0g, GMA3.0g, fully mixed to obtain a mixture; then weigh 160g of the mixture and add it to the flask, weigh 60g of EtOAc and add it to the flask, heat up to 70°C and add initiator AIBN 0.5g, wait for the reaction to start and start timing, 15min after the start of the reaction, the remaining 40g mixture and the initiator solution (containing AIBN 0.27g and EtOAc 100g as initiators) were added dropwise to the flask at a constant rate, the mixture addition time was 2h, and the initiator solution addition time was 3h; After adding the initiator solution, heat to reflux (temperature is about 76-80°C), keep stirring under reflux for 2h, the...
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