Preserved fresh flower and preparing method thereof
A technology for flowers and plasticizers, applied in the fields of botanical equipment and methods, special decorative structures, decorative arts, etc., can solve problems such as improving mechanical properties, and achieve the effects of preventing reverse osmosis of reagents, long storage time, and convenient transportation.
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Embodiment 1
[0056] The method for preparing immortal flowers of this embodiment includes the following steps:
[0057] 1) Color protection and freeze drying
[0058] Add the color protection liquid to the ultrasonic atomization humidifier to produce a large amount of mist liquid, and introduce the mist liquid into the container with the peony flower to make the color protection liquid evenly cover the surface of the peony flower, and then transfer it to the drying room for freezing. Put it in by hanging, turn on the vacuum freeze dryer, pump the pressure in the drying chamber to 10 Pa within 3 minutes, sublime and dry, and then control the heating temperature below 40°C to analyze and dry to obtain the pretreated peony; The color solution is an aqueous solution of citric acid, magnesium chloride, and konjac gum, in which the mass fraction of citric acid is 4%, the mass fraction of magnesium chloride is 3%, and the mass fraction of konjac gum is 0.05%; the pH value of the color protection solut...
Embodiment 2-5
[0063] The difference between Example 2-5 and Example 1 is only that the volume ratio of A and B in the epoxy resin AB glue is different. The specific ratio is shown in Table 1.
[0064] Table 1 The volume ratio of agent A and agent B in Example 2-5
[0065] project
A agent: B agent
Example 2
8:2
Example 3
7:3
Example 4
6:4
Example 5
5:5
[0066] The relationship between the gel time and the content of the curing agent in Examples 1-5 is as follows figure 1 Shown. by figure 1 It can be seen that the greater the amount of curing agent added, the shorter the curing time.
[0067] At the same time, during the experiment, it was found that if too much curing agent was added, the colloid would become brittle and fragile when the epoxy resin solidified into a solid. If the amount added was too small, the gel rate would be too slow or the solidification would be incomplete. Consider epoxy resin AB The optimal volume ratio of A and B in the glue is 7:3.
Embodiment 6
[0069] The method for preparing immortal flowers of this embodiment includes the following steps:
[0070] 1) Color protection and freeze drying
[0071] The method is the same as in Example 1;
[0072] 2) High pressure spraying and drying
[0073] Add epoxy resin AB glue (mixed by A and B, A is epoxy resin, B is amine curing agent, the volume ratio of A and B is 7:3) through pressurized equipment After pressing, it is sprayed on the pretreated peony flower petals through a high-pressure pipe routing nozzle (ie, high-pressure spraying), staying for 5 minutes (ie, covering the film for 5 minutes), and then drying for 2 hours by intermittent vacuuming; The vacuum degree is 75kPa, the nozzle diameter is 1.2mm, and the spraying distance is 55cm. The above-mentioned intermittent vacuuming is to first reduce the vacuum degree to 65kPa for 40 minutes, then to 45kPa for 40 minutes, then continue to reduce to 20kPa, and dry at 20kPa for 2 hours.
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