Medical catheter bonding glue and preparation method thereof
A medical catheter and bonding technology, which is applied in the field of medical catheter adhesive glue and its preparation, can solve the problems that the glue solvent volatilizes too fast, affects the performance of the product, and the system is easy to become thick, so as to improve the convenience and application The effect of extending the lifespan and not being scrapped easily
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Embodiment 1
[0036] A kind of medical catheter bonding glue, prepare raw material according to the ratio of raw materials given in Table 1, and then prepare the glue according to the following steps:
[0037] (1) Prepare raw materials;
[0038] (2) C5 petroleum resin and hydrogenated rosin glyceride in SEBS, tackifying resin are added in stirring tank successively, mix homogeneously;
[0039] (3) The cyclohexane in the solvent (density is 0.78g / cm 3 ), ethyl acetate (density is 0.902g / cm 3 ) and cyclohexanone (density 0.95g / cm 3 ) is added to the uniformly mixed material in step (2), the temperature of the stirring tank is heated to 60 ° C, and stirred for 30 min, until SEBS and tackifying resin are completely dissolved;
[0040] (4) The mixed solution obtained in step (3) is cooled to room temperature, and then poured into a storage bucket for sealing and preservation.
[0041] In this Example 1, in the glue raw material, the mass percentage of SEBS is 1.04%, and the mass percentage o...
Embodiment 2
[0045] Prepare the raw materials according to the raw material ratios given in Table 1, and prepare the glue according to the following steps:
[0046] (1) Prepare raw materials;
[0047] (2) Add all the raw materials into the plastic bucket in turn, after sealing, stand still at room temperature for 96 hours, and obtain the glue after the raw materials are completely dissolved.
[0048] In this Example 2, in the glue raw material, the mass percentage of SEBS is 1.04%, and the mass percentage of tackifying resin is 3.65%. The mass ratio of SEBS and tackifying resin is 1:3.5, the mass ratio of C5 petroleum resin and hydrogenated rosin glyceride in tackifying resin is 1:1, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in solvent is 15 :1:16.
[0049] The medical catheter adhesive glue obtained in Example 2 is denoted as S2.
[0050] Referring to the national standard GB / T 7123.1-2002 (Determination of the pot life of adhesives), the pot life of S2 is te...
Embodiment 3
[0052] Prepare raw materials according to the raw material ratios given in Table 1, and prepare glue with reference to the preparation method given in Table 1.
[0053]In Example 3, in the glue raw material, the mass percentage of SEBS is 1.05%, and the mass percentage of tackifying resin is 3.15%. The mass ratio of SEBS to tackifying resin is 1:3, the mass ratio of C5 petroleum resin to hydrogenated rosin glyceride in tackifying resin is 1:0.8, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in solvent is 15 :1:16.
[0054] The medical catheter adhesive glue obtained in Example 3 is denoted as S3.
[0055] With reference to the national standard GB / T 7123.1-2002 (Determination of the pot life of adhesives), the pot life of S3 is tested, and the test results show that the pot life of S3 is 6h.
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