Single-component epoxy needle glue and production process thereof

Abstract

The invention discloses a single-component epoxy needle adhesive and a production process thereof. The single-component epoxy needle adhesive comprises the following raw materials in parts by mass: 75-100 parts of epoxy 128 resin; 10-20 parts of an epoxy 6010 resin; 2-7 parts of titanium dioxide; 1-1.5 parts of Wacker H18 hydrophobic silicon dioxide; 25-30 parts of aluminum hydroxide; 25-30 partsof barium sulfate; 5-6 parts of dicyandiamide; 3-7 parts of a urea accelerator; 1-1.6 parts of an imidazole accelerant; and 0.4-0.7 part of a KH560 coupling agent. The device has the beneficial effects that complete curing can be guaranteed by keeping for 20 minutes on an automatic assembly line under the condition of constant temperature of 120 DEG C, and the curing operation is stable and rapid,so that the bonding quality among a needle head, a needle tube and a plastic seat is guaranteed; the single-component adhesive is prepared by adopting a single-component process, so that the normal-temperature storage time of the single-component adhesive can be prolonged to more than three months, and the storage and material preparation cost is reduced; materials can be added at any time duringuse and are not controlled by time, and filling is convenient and feasible; in addition, no solvent is employed in the production process, so that no material is volatilized in the production process, and the environmental friendliness is good.

Description

technical field [0001] The invention relates to the field of adhesive counting of syringe needles of medical equipment, in particular to a single-component epoxy needle adhesive and a production process thereof. Background technique [0002] The existing liquid epoxy resin consists of 128 or 828 epoxy resin, latent curing agent, titanium dioxide, thixotropic agent and curing accelerator. On the automatic assembly line, the temperature is kept at 120°C for 20 minutes to trigger the ring-opening to quickly cure the epoxy. However, in actual use, during the curing process, under the condition of 120°C constant temperature and 20 minutes, the curing effect of liquid epoxy resin is poor, resulting in the problem that the needle is not firmly bonded; at the same time, the storage time of liquid epoxy resin is short, usually The two-components are all cured within 24 hours, and the remaining materials after curing can only be discarded, so there is a certain waste of material prep...

AI Technical Summary

Problems solved by technology

However, in actual use, during the curing process, under the condition of 120°C constant temperature and 20 minutes, the curing effect of liquid epoxy resin is poor, resulting in the problem that the needle is not firmly bonded; at the same time, the storage time of liquid epoxy resin is short, usually The two-components are fully cured within 24 hours, and the cured remaining materials can only be discarded, so there is a certain waste of material preparation, which increases the cost of material preparation and has a certain risk of material preparation waste