Glue manufacturers share the selection of strong glue adhesive 123
Adhesive manufacturersUsually, when choosing a suitable adhesive, we must first determine two points: the material of the adhesive to be bonded and the requirements for the bonding process. Simply put, it means sticking something? What are the requirements after sticking? Many adhesives are universal, such as plastic, metal, rubber, and others. For example, the most common 502 adhesive in our daily lives can stick anything, but it doesn’t stick very well or strongly. Therefore, when choosing a suitable adhesive, the following principles should be followed:
One; There is no universal adhesive in the world for strength. For different adhesives, it is best to use specialized adhesives. If the strength of the adhesive itself is low, there is no need to choose high-strength products, otherwise it will be underutilized and increase costs. We should not only focus on high initial strength, but also consider good durability. The performance of high-temperature curing adhesive is much higher than that of room temperature curing. If high strength and good durability are required, high-temperature curing adhesive should be selected.
1: The oxide film on the surface of metal is easy to bond after surface treatment; Due to the significant difference in the coefficient of expansion between the two phases of the adhesive bonding metal, the adhesive layer is prone to internal stress; In addition, the metal bonding area is prone to electrochemical corrosion due to water action.
2: The greater the polarity of rubber, the better the bonding effect. Among them, nitrile chloroprene rubber has high polarity and strong bonding strength; Natural rubber, silicone rubber, and isobutylene rubber have low polarity and weak adhesion. In addition, there are often release agents or other free additives on the surface of rubber, which hinder the bonding effect.
3: Wood is a porous material that is prone to moisture absorption, causing dimensional changes and potentially leading to stress concentration. In addition, polished materials have better bonding performance than rough surface wood.
4: Plastic with high polarity has good bonding performance.
5: The surface of glass is composed of countless uneven and uneven parts from a microscopic perspective. Use adhesive with good wetting properties to prevent the influence of bubbles that may exist in concave and convex areas. In addition, glass is mainly composed of si-o -, and its surface layer is prone to adsorb water. Due to the strong polarity of glass, polar adhesive is prone to hydrogen bonding with the surface, forming a strong bond. Glass is brittle and transparent, so when choosing adhesive, these factors should be taken into consideration.
2： Considering the shape, structure, and process conditions of bonding materials, fast drying glue is generally used for small area products, while slow drying glue is used for large area products. Ordinary flat materials do not require surface treatment, while special materials require surface treatment or need to be used in conjunction with other adhesive treatment agents.
3： Considering the load and form (tension, shear force, peel force, etc.) that the bonding area bears, ordinary bonding can generally maintain bonding strength with ordinary glue, but some materials require high bonding strength, such as metal bonding that requires metal glue.
4： Considering the special requirements of materials such as high temperature resistance, low temperature resistance, aging resistance, waterproofing, corrosion resistance, etc., the most basic of these requirements is high temperature and low temperature resistance. For example, products sold in winter in the north must have low temperature resistance requirements, while some work in high temperature places requires high temperature resistance. The corresponding bonding conditions are determined based on the environment in which the product is used. Precautions for the use of strong adhesive: For the strong adhesive of AB component, please follow the instructions in the mixing ratio. The strong adhesive for component AB must be thoroughly stirred before use. Cannot leave any dead corners, otherwise it will not solidify. The adhered object must be cleaned thoroughly and free of moisture (except for underwater curing adhesive). When bonding objects, it is best to apply pressure or fix them with fixtures. For higher strength, it is best to leave it for 24 hours after bonding. Single component solvent or water based, be sure to stir evenly when using. For solvent based products, after coating, it is advisable to cool them to a low degree of stickiness before bonding. To achieve high bonding strength, the object to be bonded should be polished as much as possible. The quality of the bonding joint design determines the strength of the bonding.
Glue manufacturers share the selection of strong glue adhesive 123
When using strong adhesive, it must be prepared and used immediately, and should not be left for too long. If it is a rapid curing, it should generally not exceed 2 minutes. If you want high strength and fast curing, you can heat it according to your situation. When applying glue, it should not be too thick, generally 0.5mm is better, the thicker the adhesive, the worse the bonding effect. If you want to learn more about strong adhesives, AB adhesives, quick drying adhesives and other related information, please visit our company’s official website for inquiries http://www.aicarder.com/
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