Grace crystal glue, epoxy crystal glue, epoxy resin adhesive, crystal glue.
Crystal glue is also called fake crystal.
At present, according to the different raw materials used, it can be divided into two categories: polyurethane PU adhesive and epoxy AB adhesive. Epoxy resin adhesive is relatively cheap and widely used, but its yellowing resistance and toughness are relatively poor. Polyurethane PU adhesive has anti-ultraviolet function, which can ensure that it will not yellow for three years and will not harden with time. It is suitable for high-end products such as vehicle signs, but it is rarely used because of its high price. Ordinary epoxy crystal glue consists of high-purity epoxy resin, curing agent and their mixture.
Modified by experts from Grace crystal glue, the cured product has the characteristics of water resistance, chemical corrosion resistance, yellowing resistance and crystal clear.
At present, crystal glue on the market can be roughly divided into: flat soft glue, flat hard glue, bent soft glue, bent hard glue, pouring glue, process fake water, polishing glue and so on.
Using crystal glue can not only protect the surface of handicrafts and ornaments, but also increase the gloss and brightness of products.
Crystal glue is suitable for making photo albums, photos, photo album covers, badges, panels, stickers, signs, automobile panels, metal, glass, badges, belt buckles, solar panels, LED product packaging, wood and stone.
Crystal glue's performance characteristics:
1, crystal glue Appearance: colorless and transparent viscous liquid, without mechanical impurities.
2. Grace crystal glue and crystal glue cure quickly.
3, strong adhesion, completely meet the requirements of adhesion.
4. The formed adhesive layer has high light transmittance, and the light transmittance after curing is more than or equal to 90%.
5. It has good thermal aging resistance and radiation resistance, and can maintain good bonding effect for a long time.
6. Safety and toxicity characteristics: no volatile components, no inhalation danger, no toxicity after cure, convenient and safe to use.
7. The storage stability is good, and the storage period at room temperature is half a year.
Crystal glue instructions for use.
I. Types and Scope of crystal glue
1, epoxy soft crystal glue: It is a liquid, two-component, soft self-drying crystal glue, which is colorless, transparent and elastic, and will recover itself after a slight scratch on the surface. Suitable for the decoration of signs such as polyester, paper and plastic.
2. Epoxy hard crystal adhesive: liquid, two-component hard crystal adhesive, colorless and transparent, suitable for metal signs, and can be used to make various crystal buttons, crystal bottle caps, crystal combs, crystal handicrafts and other high-end decorations. 3.PU polyurethane soft crystal adhesive: liquid, two-component PU polyurethane resin has plump surface, wear resistance, impact resistance, yellowing resistance, aging resistance, high transparency and softness, and is suitable for making high-grade trademarks, automobile nameplates, decals, badges and other decorations.
Second, the process conditions and usage
1. Operation method of soft crystal glue: l Ready containers and clean and dry signs. ② Weigh crystal glue A and B at 150:50, heat Group A to about 40℃, then add Group B, pour it into a container, stir evenly, defoam (vacuumize, vacuum pump) ③ Use a small beaker or syringe to evenly drop the defoamed glue on the sign. If the edge of the sign can't reach the crystal glue (basically), you can stir it with a small needle to make the glue evenly spread on the surface. (4) Gel curing: at room temperature of 25℃, the gel time of the painted signboard is about 3 hours; The curing time at room temperature is about 36 hours. Or put the painted sign in a constant temperature drying oven at 60℃, and it can be completely cured after 3 hours. ⑤ If the customer has special requirements, the gel curing time and the hardness of the cured glue can be appropriately adjusted according to the customer's requirements. ⑥ The dispensing amount can be controlled by the customer, and the remaining amount of glue does not exceed 1 hour. 2. Operation method of hard thermosetting crystal glue: ① Preparation before configuration is the same as above. ② Weigh component A and component B of crystal glue according to the ratio of 3: 1, stir them evenly, and then drop them on the sign. (3) Gelation: put the painted logo into an oven at about 60℃ and heat it for 65438+/-0.5 hours; Or leave it at room temperature for about 13 hours and let it dry by itself.
3. Operation method of PU polyurethane crystal glue: ① Before configuration, components A and B of PU crystal glue should be weighed, 100: 100, and the configuration is the same as above. ② Weigh component A and component B of crystal glue according to the ratio of 1: 1, stir them evenly, and then drop them on the sign. (3) However, the hand dripping speed of PU is slow, which requires high environmental humidity, and the relative humidity should be between 40-60, so as to avoid foaming in the later stage. It is suggested that PU crystal glue adopt a glue dripping machine. For methods, please refer to the instructions of the glue dripping machine.
Three, storage and matters needing attention
1, use and storage should avoid direct sunlight and contact with high temperature to prevent jelly. Generally stored in a cool and dark place at 25℃, especially in summer, it is best to store at low temperature.
2. Generally, the shelf life of crystal glue is 6 months, and it can still be used after 6 months with good performance.
3, the use of configuration crystal glue encountered residual glue, do not pour back into the original unconfigured packaging, so as not to react, resulting in jelly phenomenon.
Acetone can be used in syringes, beakers and other containers. Alcohol cleaning.
5. Note: No other thinner can be added during glue mixing, so as not to reduce the strength.
Grace crystal glue, epoxy crystal glue, epoxy resin adhesive, crystal glue.