Multifunctional label adhesive and preparation method thereof
By adding dodecyl hydroxysulfobetaine, cetyl trimethylammonium chloride, and triphenylphenol polyoxyethylene ether to the label adhesive, the strength of the adhesive at high temperature was solved. Problem, the stable adhesion and durability of the label under high temperature conditions are achieved.
Patent Information
- Application Number
- CN202411349682.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2024-12-06
AI Technical Summary
The strength of existing label adhesives decreases at high temperatures, causing the label to fall off easily and affect the labeling effect.
Dodecyl hydroxysulfobetaine, cetyl trimethylammonium chloride, and triphenylphenol polyoxyethylene ether are used as modifiers. By adding these ingredients to the binder, the molecular weight is protected and the Molecular chain structure improves the high temperature resistance of the adhesive and its strength after curing.
It significantly improves the stability and strength of the adhesive at high temperatures, prevents the label from falling off, and ensures that the label sticks to the product for a long-lasting and stable manner under high temperature conditions.
Smart Images
Figure BDA0005061980270000061
Abstract
Description
Technical Field
[0001] The invention relates to the field of label adhesives, in particular to a multifunctional label adhesive and a preparation method thereof. Background Art
[0002] Adhesive is a substance used to connect two separate materials together. The adhesive can be used to adhere the label to the surface of the object so that the label can play a stable identification role.
[0003] Labels are tools used to identify product targets, categories, contents and other information. Labels need to be adhered to the surface of the product to achieve a stable and lasting identification effect. Therefore, labels need to be adhered to the surface of the product through adhesives. There are many types of adhesives for existing labels. In order to improve the stability of the label and make it difficult for the label to fall off, various additives are added to the existing adhesives to enhance the strength of the adhesive, thereby meeting the requirements of various application conditions.
[0004] Although existing adhesives have high strength when they are first used, when the adhesive is cured and then stored at high temperature for a long time, the molecular structure of the cured adhesive will be quickly destroyed, causing the strength of the adhesive to drop rapidly. Ultimately, the label will easily fall off during product transportation, resulting in the loss of the label's identification function. Therefore, there is still room for improvement. Summary of the invention
[0005] In order to prevent the strength of the adhesive from decreasing at high temperatures, the present application provides a multifunctional label adhesive and a preparation method thereof.
[0006] In a first aspect, the present application provides a multifunctional label adhesive, which adopts the following technical solution: A multifunctional label adhesive comprises the following components in parts by weight: 100 parts of solvent; Polyvinyl alcohol 10-12 parts; 10-12 parts of N-hydroxymethyl acrylamide; Initiator 0.05-0.06 parts; Glycerol formal 0.4-0.6 parts; Modifier 9-12 parts; The modifier is a compound of dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride and tristyrylphenol polyoxyethylene ether.
[0007] By adopting the above technical scheme, by adding dodecyl hydroxysulfobetaine, hexadecyltrimethylammonium chloride and tristyrylphenol polyoxyethylene ether into the adhesive, the molecular weight in the adhesive can be significantly protected, so that after the adhesive is cured, it is not easily attacked by oxygen at high temperature, so that the molecular chain of the adhesive is not easily destroyed, so that the adhesive can be durable and stable at high temperature, and the strength is not easily reduced. At the same time, the addition of dodecyl hydroxysulfobetaine, hexadecyltrimethylammonium chloride and tristyrylphenol polyoxyethylene ether can change the arrangement of the molecular chains, thereby changing the overall molecular chain structure, so that the strength of the adhesive after curing is further improved, so that the adhesive can more firmly adhere the label to the product and is not easy to cause the label to fall off.
[0008] Preferably, the mass ratio of the dodecyl hydroxysulfobetaine, hexadecyltrimethylammonium chloride and tristyrylphenol polyoxyethylene ether is 1-2:3-4:5-6.
[0009] By adopting the above technical scheme and specifically selecting the mass ratio of dodecyl hydroxysulfobetaine, hexadecyltrimethylammonium chloride and tristyrylphenol polyoxyethylene ether, the adhesive can have better high temperature resistance and can further improve the strength of the adhesive after curing, so that the adhesive can stick the label more firmly.
[0010] Preferably, the solvent is deionized water.
[0011] By adopting the above technical solution and specifically selecting deionized water, the pollution of the environment by organic solvents can be reduced, which is more environmentally friendly.
[0012] Preferably, the initiator is ammonium persulfate.
[0013] By adopting the above technical solution and specifically selecting ammonium persulfate, the initiation effect is better, so that the strength of the adhesive after curing is higher.
[0014] Preferably, the mass ratio of the polyvinyl alcohol to N-hydroxymethyl acrylamide is 1:1.
[0015] By adopting the above technical solution and specifically selecting the mass ratio of polyvinyl alcohol and N-hydroxymethyl acrylamide, the adhesive has higher softness after curing and is not easy to become brittle, so that the adhesive is not easy to be damaged after curing.
[0016] Preferably, the mass ratio of the polyvinyl alcohol, N-hydroxymethyl acrylamide and initiator is 1:1:0.005.
[0017] By adopting the above technical solution and specifically selecting the mass ratio of polyvinyl alcohol, N-hydroxymethyl acrylamide and initiator, the cured adhesive has higher softness and strength and better quality.
[0018] In a second aspect, the present application provides a method for preparing a multifunctional label adhesive, using the following technical solution: A method for preparing the above-mentioned multifunctional label adhesive comprises the following steps: Step 1), mixing a solvent, polyvinyl alcohol, N-hydroxymethyl acrylamide, glycerol formal, and a modifier at 97-99° C. to obtain a premix; Step 2), cooling the premix to 64-66° C., adding an initiator and mixing evenly to obtain a multifunctional label adhesive.
[0019] By adopting the above technical solution and mixing at 97-99°C, the modification effect of the modifier can be fully exerted, the strength of the prepared adhesive is significantly improved, and the strength is not easy to decrease at high temperature, and the high temperature resistance is significantly improved.
[0020] Preferably, in the step 1), mixing is performed at 97-99° C. for 2-3 hours, and in the step 2), mixing is performed for 10-15 minutes after adding the initiator.
[0021] By adopting the above technical solution, by mixing at 97-99°C for 2-3h, the modification effect is more sufficient, the modification effect is better, the adhesive strength is higher, and the heat resistance is better.
[0022] In summary, this application has the following beneficial effects: 1. Since the present application adds dodecyl hydroxysulfonyl betaine, hexadecyl trimethyl ammonium chloride and tristyryl phenol polyoxyethylene ether to the adhesive, the molecular weight in the adhesive can be significantly protected, so that after the adhesive is cured, it is not easily attacked by oxygen at high temperature, so that the molecular chain of the adhesive is not easily destroyed, so that the adhesive can be durable and stable at high temperature, and the strength is not easily reduced. At the same time, the addition of dodecyl hydroxysulfonyl betaine, hexadecyl trimethyl ammonium chloride and tristyryl phenol polyoxyethylene ether can change the arrangement of the molecular chains, thereby changing the overall molecular chain structure, so that the strength of the adhesive after curing is further improved, so that the adhesive can more firmly adhere the label to the product and is not easy to cause the label to fall off.
[0023] 2. In the present application, it is preferred to specifically select the mass ratio of dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride, and tristyrylphenol polyoxyethylene ether so that the adhesive has better high temperature resistance and can further improve the strength of the adhesive after curing, so that the adhesive can stick the label more firmly.
[0024] 3. The method of the present application, by mixing at 97-99°C for 2-3h, allows the modification effect of the modifier to be fully exerted, and the strength of the prepared adhesive is significantly improved. At the same time, the strength is not easy to decrease at high temperature, and the high temperature resistance is significantly improved. DETAILED DESCRIPTION
[0025] The present application is further described in detail below with reference to the embodiments.
[0026] Example 1 A multifunctional label adhesive comprising the following components: Solvent, polyvinyl alcohol, N-hydroxymethyl acrylamide, initiator, glycerol formal, modifier.
[0027] The solvent is deionized water.
[0028] Polyvinyl alcohol was purchased from Hebei Ruyuan Building Materials Co., Ltd., PVA-2488.
[0029] N-Hydroxymethyl acrylamide is commercially available, CAS number: 924-42-5.
[0030] The initiator is ammonium persulfate, which is commercially available with CAS number: 7727-54-0.
[0031] Glycerol formal is commercially available, CAS number: 86687-05-0.
[0032] The modifier is a compound of dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride and tristyrylphenol polyoxyethylene ether.
[0033] Dodecyl hydroxysulfobetaine is commercially available, CAS number: 13197-76-7.
[0034] Hexadecyltrimethylammonium chloride is commercially available, CAS number: 112-0207.
[0035] Tristyrylphenol polyoxyethylene ether is commercially available, CAS number: 99734-09-5.
[0036] The preparation method of the multifunctional label adhesive comprises the following steps: Step 1), 100 kg of deionized water, 10 kg of polyvinyl alcohol, 10 kg of N-hydroxymethyl acrylamide, 0.4 kg of glycerol formal, 1 kg of dodecyl hydroxysulfobetaine, 3 kg of hexadecyl trimethylammonium chloride, and 5 kg of tristyrylphenol polyoxyethylene ether are put into a stirring tank at a speed of 120 r / min and stirred at a constant temperature of 97° C. for 2 hours to obtain a premix.
[0037] Step 2), cooling the premix to 64° C., adding 0.05 kg of ammonium persulfate, rotating at 60 r / min, stirring for 10 min, and mixing evenly to obtain a multifunctional label adhesive.
[0038] Example 2 A multifunctional label adhesive comprising the following components: Solvent, polyvinyl alcohol, N-hydroxymethyl acrylamide, initiator, glycerol formal, modifier.
[0039] The solvent is deionized water.
[0040] Polyvinyl alcohol was purchased from Hebei Ruyuan Building Materials Co., Ltd., PVA-2488.
[0041] N-Hydroxymethyl acrylamide is commercially available, CAS number: 924-42-5.
[0042] The initiator is ammonium persulfate, which is commercially available with CAS number: 7727-54-0.
[0043] Glycerol formal is commercially available, CAS number: 86687-05-0.
[0044] The modifier is a compound of dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride and tristyrylphenol polyoxyethylene ether.
[0045] Dodecyl hydroxysulfobetaine is commercially available, CAS number: 13197-76-7.
[0046] Hexadecyltrimethylammonium chloride is commercially available, CAS number: 112-0207.
[0047] Tristyrylphenol polyoxyethylene ether is commercially available, CAS number: 99734-09-5.
[0048] The preparation method of the multifunctional label adhesive comprises the following steps: Step 1), 100 kg of deionized water, 11 kg of polyvinyl alcohol, 11 kg of N-hydroxymethyl acrylamide, 0.5 kg of glycerol formal, 1.5 kg of dodecyl hydroxysulfobetaine, 3.5 kg of hexadecyl trimethylammonium chloride, and 5.5 kg of tristyrylphenol polyoxyethylene ether are put into a stirring tank at a speed of 120 r / min and stirred at a constant temperature of 98° C. for 2.5 hours to obtain a premix.
[0049] Step 2), cooling the premix to 65° C., adding 0.055 kg of ammonium persulfate, rotating at 60 r / min, stirring for 12.5 min, and mixing evenly to obtain a multifunctional label adhesive.
[0050] Example 3 A multifunctional label adhesive comprising the following components: Solvent, polyvinyl alcohol, N-hydroxymethyl acrylamide, initiator, glycerol formal, modifier.
[0051] The solvent is deionized water.
[0052] Polyvinyl alcohol was purchased from Hebei Ruyuan Building Materials Co., Ltd., PVA-2488.
[0053] N-Hydroxymethyl acrylamide is commercially available, CAS number: 924-42-5.
[0054] The initiator is ammonium persulfate, which is commercially available with CAS number: 7727-54-0.
[0055] Glycerol formal is commercially available, CAS number: 86687-05-0.
[0056] The modifier is a compound of dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride and tristyrylphenol polyoxyethylene ether.
[0057] Dodecyl hydroxysulfobetaine is commercially available, CAS number: 13197-76-7.
[0058] Hexadecyltrimethylammonium chloride is commercially available, CAS number: 112-0207.
[0059] Tristyrylphenol polyoxyethylene ether is commercially available, CAS number: 99734-09-5.
[0060] The preparation method of the multifunctional label adhesive comprises the following steps: Step 1), 100 kg of deionized water, 12 kg of polyvinyl alcohol, 12 kg of N-hydroxymethyl acrylamide, 0.6 kg of glycerol formal, 2 kg of dodecyl hydroxysulfobetaine, 4 kg of hexadecyl trimethylammonium chloride, and 6 kg of tristyrylphenol polyoxyethylene ether are put into a stirring tank at a speed of 120 r / min and stirred at a constant temperature of 99° C. for 3 hours to obtain a premix.
[0061] Step 2), cooling the premix to 66° C., adding 0.06 kg of ammonium persulfate, rotating at 60 r / min, stirring for 15 min, and mixing evenly to obtain a multifunctional label adhesive.
[0062] Comparative Example 1 A multifunctional label adhesive, compared with Example 2, the only difference is: In the modifier, cocamidopropyl betaine was used to replace dodecyl hydroxysulfobetaine in equal amounts.
[0063] Cocamidopropyl betaine is commercially available, CAS number: 86438-79-1.
[0064] Comparative Example 2 A multifunctional label adhesive, compared with Example 2, the only difference is: In the modifier, sodium dodecylbenzenesulfonate is used to replace hexadecyltrimethylammonium chloride in equal amounts.
[0065] Sodium dodecylbenzenesulfonate is commercially available, CAS number: 25155-30-0.
[0066] Comparative Example 3 A multifunctional label adhesive, compared with Example 2, the only difference is: In the modifier, alkyl glycoside is used to replace tristyrylphenol polyoxyethylene ether in equal amounts.
[0067] Alkyl glycoside is commercially available, CAS number: 157707-88-5.
[0068] Comparative Example 4 A multifunctional label adhesive, compared with Example 2, the only difference is: In the modifier, cocamidopropyl betaine is used to replace dodecyl hydroxysulfobetaine in an equal amount; sodium dodecylbenzenesulfonate is used to replace hexadecyltrimethylammonium chloride in an equal amount; and alkyl glucoside is used to replace tristyrylphenol polyoxyethylene ether in an equal amount.
[0069] Cocamidopropyl betaine is commercially available, CAS number: 86438-79-1.
[0070] Sodium dodecylbenzenesulfonate is commercially available, CAS number: 25155-30-0.
[0071] Alkyl glycoside is commercially available, CAS number: 157707-88-5.
[0072] Experiment 1 According to GB / T 7124-2008 “Determination of tensile shear strength of adhesives” (rigid material to rigid material), the tensile shear strength (MPa) of the test samples prepared in each embodiment and comparative example was tested.
[0073] The samples to be tested at room temperature and the samples to be tested at high temperature are tested respectively.
[0074] Samples to be tested at room temperature: After the samples to be tested are made according to GB / T 7124-2008, they are stored at room temperature for 30 days.
[0075] High temperature test samples: After the test samples are made according to GB / T 7124-2008, they are stored at a constant temperature of 200℃ for 30 days.
[0076] The specific test data of Experiment 1 are shown in Table 1.
[0077] Table 1 According to the data comparison of each embodiment and comparative example in Table 1, after each embodiment is stored at 200°C for 30 days, the decrease in tensile shear strength is less, while after each comparative example is stored at 200°C for 30 days, the decrease in tensile shear strength is significantly increased. It can be seen that the modifier prepared by adding dodecyl hydroxysulfobetaine, hexadecyltrimethylammonium chloride and tristyrylphenol polyoxyethylene ether in each embodiment can significantly improve the high temperature resistance of the adhesive, and it is not easy to cause a sharp decrease in strength even when working at high temperature for a long time.
[0078] In addition, according to the comparison of the tensile shear strength of the samples to be tested at room temperature in each embodiment and the comparative example, the tensile shear strength of the samples to be tested at room temperature in each embodiment is higher than that in each comparative example. It can be seen that the modifier prepared by adding dodecyl hydroxysulfobetaine, hexadecyltrimethylammonium chloride and tristyrylphenol polyoxyethylene ether in each embodiment can also improve the strength of the adhesive after curing to a certain extent, so that its mechanical properties are better and the quality is better.
[0079] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.
Claims
1. A multifunctional label adhesive, characterized in that: The composition includes the following components in parts by weight: 100 parts of solvent; Polyvinyl alcohol 10-12 parts; 10-12 parts of N-hydroxymethyl acrylamide; Initiator 0.05-0.06 parts; Glycerol formal 0.4-0.6 parts; Modifier 9-12 parts; The modifier is a compound of dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride and tristyrylphenol polyoxyethylene ether.
2. The multifunctional label adhesive according to claim 1, characterized in that: The mass ratio of the dodecyl hydroxysulfobetaine, hexadecyl trimethylammonium chloride and tristyrylphenol polyoxyethylene ether is 1-2:3-4:5-6.
3. The multifunctional label adhesive according to claim 1, characterized in that: The solvent is deionized water.
4. The multifunctional label adhesive according to claim 1, characterized in that: The initiator is ammonium persulfate.
5. The multifunctional label adhesive according to claim 1, characterized in that: The mass ratio of the polyvinyl alcohol to N-hydroxymethyl acrylamide is 1:
1.
6. The multifunctional label adhesive according to claim 5, characterized in that: The mass ratio of the polyvinyl alcohol, N-hydroxymethyl acrylamide and initiator is 1:1:0.
005.
7. A method for preparing the multifunctional label adhesive according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1), mixing the solvent, polyvinyl alcohol, N-hydroxymethyl acrylamide, glycerol formal, and the modifier at 97-99° C. to obtain a premix; Step 2), cool the premix to 64-66°C, add the initiator and mix well to obtain a multifunctional label adhesive.
8. The method for preparing a multifunctional label adhesive according to claim 7, characterized in that: In the step 1), the mixture is mixed at 97-99° C. for 2-3 hours. In the step 2), the mixture is mixed for 10-15 minutes after the initiator is added.