First, recognize the brand
In the end, the competition of products in the modern market is actually the competition of the brand. The glass glue products have already developed into the era of brand competition. Consumers should investigate and recognize a brand in all aspects: effective registered trademarks, distinctive image recognition, consistent quality, reasonable price positioning, perfect sales network, and thoughtful service system are all consumer judgments. Basis.

Second, look at the packaging
(1) Look at the carton: The carton used by the responsible manufacturer has good texture and durability; the packaging design and printing quality are very beautiful; the product name, factory name, specification, origin, color, date of manufacture and other relevant information are accurate and detailed; , warranty books, product information manuals, etc. are readily available.

(2) Look at the plastic bottle: From the surface of the plastic bottle, the first thing that is easy to distinguish is the printing quality of the bottle: the packaging of the good product is clear and detailed, and the information is “useful”. The expressions such as “usage” and “precautions” are clear and complete, reflecting the attitude towards the user and the consumer. (3) Specific net content: According to the relevant regulations of the state on product packaging, the manufacturer must indicate on the packaging the net content of the specification model (unit g or ml), but some glass glue manufacturers do not strictly implement the state. One stipulates that only the gross weight or other code numbers are displayed on the bottle. Because of the large number, it gives the illusion that the amount of glue is large. Some manufacturers have large net content on the bottle, but the actual use is The thick bottle is covered with a thick base, and the average amount of the hand is not obvious. This is the most deceptive to the user. Responsible manufacturers must truly indicate the net content of the product, and recommend thin bottles to the user. Even if some models use thick bottles, they will be explained to the user as thick bottles.

Third, the test gel:
If the user can only judge whether the manufacturer is doing good or bad, and can not judge the quality of the product, it is necessary to check the quality of the glue. There are several ways to judge the quality of glue conveniently and quickly:

(1) smell (suitable for acid glue): acid gel contains acetic acid component, which will produce a sour taste during volatilization, but generally the better the quality, the weaker the acidity of the gum, the worse the quality of the gum Strong (because of the addition of more acetic acid); at the same time, the good quality of the glue disappears quickly during the curing process, and the poor quality of the acid taste is much longer.

(2) Compared with gloss: the gloss of different quality rubber is different after it is printed. The high-quality glue has strong gloss after curing. The low-quality glue has a dullness, and some are cured after one or two months. Lost gloss.

(3) Checking granules: The high-quality glass glue is a chemically synthesized material that has been thoroughly stirred. The texture is fine and uniform, and the sizing is smooth and the gloss is smooth. The worse the quality of the glue, the more particles and debris can be seen. After the sizing is cured, the surface of the strip is smoother and smoother than the good quality.

(4) Look at the bubble: the main component of the high-quality glass glue is silicone. The amount of other added materials is very small. The good stability of pure silicone is minimally affected by changes in external conditions during storage, and no glue bottle is produced during sizing. The phenomenon of "啪" and "啪" bubble sounds when the air is mixed into the glue. However, ordinary ordinary silicone rubber is not 100% silicone rubber because of its glue. The additives in the silica gel and the PE soft rubber in the rubber bottle may cause chemical reaction, which makes the rubber bottle swell and increase, and the air remaining in the space penetrates into the rubber. The slurry creates a void and “啪” when it is glued. The bubbling sound of “啪” shortens the shelf life. What's more, a few manufacturers deliberately put the bottom cover on the bottom of the bottle when the glue is installed, and the air is left in the middle of the bottle, so that the amount of glue is greatly reduced, and the natural glue is also inevitable.

(5) Check the curing effect: After the local sizing, the user should first check the dry time of the glass glue in combination with the instructions on the product packaging. If the time is too short or the timeout is too much, the quality of the glass glue is problematic (of course Consider the influence of environmental conditions); then wait for the curing to be completed (the curing time should also be noted by the manufacturer), try to test the hardness and elasticity of the rubber by hand, the rubber that is too hard or too soft is not good glue; then you can cut the glue The cross-section detection gel has the same curing effect inside and outside the glue.

(6) Test tensile strength and adhesion: The tensile strength and peel strength (i.e., the adhesive strength) after curing of the silicone rubber are also different due to the difference in the quality of the silicone rubber. The high-quality rubber has strong tensile force, large stretching range and high peeling strength;