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Methods for degreasing ABS, PC, TPU and other plastic substrates and the role of electroplating degreasing agents

Effect: Electroplating oil remover can effectively remove oil stains on the surface of plastic substrates such as ABS, PC, and TPU, and improve the adhesion and quality of the plating layer. At the same time, the use of electroplating degreasing agents is relatively safe and causes less pollution to the environment. The role of electroplating degreasing agents. Electroplating degreasing agents play a vital role in the plastic injection molding process, especially in the electroplating pretreatment process.

Oil removal: The main function of electroplating oil remover is to remove oil from the surface of ABS plastic workpieces.

For example, ABS, PC, TPU and other materials have certain requirements on the corrosion resistance and adhesion of oil scavengers.

The advantages of efficient degreasing, safety and environmental protection can be used as an important solution for degreasing before UV vacuum plating of ABS, PC, ABS+PC, TPU and other materials.

What is the reason for the pc shell cracking

Cracking of PC materials can be caused by a variety of reasons. Processing factors During the processing process, if PC materials are subjected to excessive temperatures or long-term heating, their molecular structure will change, resulting in a decline in material properties and prone to cracking. In addition, improper forming processes, such as too fast injection speed and unreasonable mold design, may also cause cracking of PC products.

There are two main reasons why PC materials crack after injection molding: poor strength and toughness and insufficient stress release. Poor strength and toughness Although PC (polycarbonate) materials have excellent physical and mechanical properties, such as high impact resistance, tensile strength, bending strength, and compression strength, under certain conditions, such as improper injection molding process, raw material formulation When unreasonable or the material itself has defects, its strength and toughness may decrease.

PC material characteristics: PC is a notch-sensitive material. If small cracks are not terminated in time, they will expand into large cracks.

Will the surface rubbed by white electric oil be smooth?

Smooth. According to relevant information about white electric oil, we know that the surface touched by white electric oil will be very smooth. It has solvent resistance, stamping resistance, bending resistance, white electrical oil resistance, good hardness, and smooth coating surface. Most suitable for metal surface decoration.

Rubber and coating solvents: In the rubber and coating industry, white electricity oil, as a solvent, can dissolve various components in rubber and coatings, giving them good flowability and construction properties. During the production process of rubber products, it helps to shape and process rubber; during coating construction, the coating can be uniformly coated on the surface of the object to form a smooth and smooth coating.

Low surface tension and high permeability white electric oil surface tension is low, so that it can spread quickly on the glass surface, and quickly penetrate into the interface between oil and glass, thus weakening the adhesion of oil on the glass, making oil easier to be separated and removed. High volatile white electricity oil has the characteristics of low boiling point and high volatility. After dissolving the oil, it can volatilize quickly at room temperature, without residual solvent on the glass surface, thus avoiding leaving water marks or stains and keeping the glass transparent and clean.

Will chemical reagents cause cracking in PC parts?

1. Chemical reagents may cause cracking in PC parts, depending on the type of reagent, contact duration, PC material brand and the core mechanism of cracking in the internal stress state of the parts. PC is an amorphous thermoplastic with high surface energy and comes into contact with specific chemicals. Swelling or molecular chain corrosion occurs when reagents are added, which will cause environmental stress cracking (ESC). Cracks usually start at stress concentration points (such as gates and corners).

2. PC materials will cause cracking when exposed to specific chemical reagents, mainly environmental stress cracking. It only occurs when exposed to specific types of reagents such as polar organic solvents and strong corrosive media, accompanied by internal/external stress. Not all chemical reagents will crack.

3. The chemical reagents that can cause cracking of PC materials are mainly ketones, esters, halogenated hydrocarbons and aprotic polar solvents containing strong polar functional groups. These reagents will destroy the ester bond structure of PC polycarbonate molecular chains or swell the amorphous region, combined with residual stress of PC or direct erosion, causes cracking.

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