PP material has the problem of insufficient adhesion due to its low surface energy and high crystallinity. In addition to conventional adhesive methods, what other methods can be used to treat it,

Firstly, plasma cleaning machines can use high-energy particles generated by plasma to bombard the surface of PP materials, causing the molecular chains on the surface to break and form new functional groups, improving surface activity and polarity. This method has good treatment effects and is environmentally friendly, but the equipment cost is relatively high.

In daily life, it is polymerized from a single propylene monomer, with no ethylene monomer in the molecular chain. The molecular chain regularity is high, and the material crystallinity is high, therefore it has high rigidity and hardness, good strength, and excellent corrosion resistance. However, its impact performance is poor, it is brittle, has poor toughness, poor dimensional stability, is prone to aging, has poor long-term heat stability, and has poor barrier properties against gases such as oxygen and carbon dioxide. 

Can be used for packaging straps, blow molding, brushes, ropes, woven bags, toys, folders, electrical appliances, household items, microwave lunch boxes, storage boxes, packaging paper films, bumpers, thin-walled products, baby strollers, sports equipment, luggage, paint buckets, battery boxes. Due to its excellent impact resistance, but low transparency, low glossiness, moisture absorption resistance, acid and alkali corrosion resistance, solubility resistance, and poor oxidation resistance at high temperatures, it is necessary to clean and activate the material surface for modification treatment,

What PP plastics can be processed by atmospheric plasma cleaning machine in automotive parts?

There are many types of PP plastics, and PP plastics for automotive parts suitable for atmospheric plasma cleaning can be roughly divided into two categories. What are their respective functions?

1. Plasma cleaning machine can enhance the activation of modified PP plastic surface:

   
   

Due to the fact that plasma cleaning machines typically generate plasma through power sources such as radio frequency (RF), microwave, or direct current. In a closed chamber, a certain amount of working gas (such as argon, oxygen, nitrogen, etc.) is introduced, and then a high-frequency electric field is applied. Under the action of an electric field, gas molecules are ionized, forming a plasma composed of electrons, ions, neutral atoms, and molecules. 

Common car parts such as bumpers, side guards, outer anti scratch strips, and wheel cover liners can enhance surface adhesion and bonding after being treated with a plasma cleaning machine.

2. Many manufacturers of products such as car lamp bodies, instrument panels, instrument panel housings, instrument panel bases, door inner guards, storage boxes, water tank covers, etc. often encounter many problems due to the large shrinkage, low thermal deformation temperature, and poor mechanical durability of PP plastic materials. If atmospheric ion cleaning machines are used, the adhesion between materials can be enhanced. Can improve the reliability of material bonding, enhance coating and printing quality, increase coating strength, etc.

In summary, for some difficult to bond plastic products or polymer materials, after low-temperature plasma cleaning treatment, the plasma will introduce some polar groups (such as hydroxyl, carboxyl, etc.) on the surface through interaction with the object surface. These groups can improve the chemical activity and wettability of the surface, which is beneficial for subsequent bonding, coating and other processes. 

If you want to have a more detailed understanding of the atmospheric low-temperature plasma cleaning machine or have questions about equipment use, and want to improve the wettability and adhesion of the product surface, please click on the online customer service of Zhenyi Co., Ltd. Chengfeng Zhizao is waiting for your call!