Environmental protection and energy saving advantages of TGIC curing system powder coatings

Some data show that TGIC's Ames (pollutant mutagenicity test) is positive, that is, it has a certain genetic toxicity.
This result has been confirmed in experiments on rodents, but there is no human genetic or cellular mutation.
Case reports, so a comprehensive study is needed.

2.
1.
3 Skin irritation

It has been confirmed that TGIC is irritating to human skin, eyes, etc.
, and the irritation is aggravated in a humid and hot environment.
Some people experienced itching after exposure to TGIC, erythema and ulcers after scratching, and healed spontaneously after they were separated from the contact.

2.
1.
4 Safe use

It is worth noting that TGIC has been used as an experimental anti-cancer drug, and experiments have shown that it has a selective killing effect on L1210 cancer cells.
Huangshan Huahui Fine Chemical Co.
, Ltd.
is a major TGIC manufacturer in my country.
There has been no TGIC poisoning incident or TGIC genetic disease in the past 20 years of production.
TGIC powder coating is the main product of DuPont Huajia Chemical Co.
, Ltd.
The company has never had any occupational diseases related to TGIC toxicity.

3.
Environmental protection advantages of TGIC production

From the perspective of the production process of TGIC curing agent, the production process is basically liquid and fully enclosed, and the main by-products of this product are waste residue and wastewater.
my country's TGIC manufacturers have established corresponding waste treatment devices, which have passed the environmental assessment certification of the local environmental protection department, and have reached the standard discharge.
Therefore, in the production process of TGIC, it will not cause harm to the environment.

4.
Environmental protection and energy saving advantages of TGIC powder coatings

At present, my country's powder coatings have basically achieved the goal of zero emission, which is one of the environmentally friendly coatings and one of the development directions of the global coatings industry.
The production technology of powder coatings has been very mature.
The product yield of powder coatings exceeds 95%.
After the ultrafine waste powder ≤5% generated in production is recycled through the system, it can be reused in the production of powder coatings.
It basically achieves zero emissions and does not cause any harm to the environment.

From the perspective of powder coating technology, the primary powder coating rate of powder coating reaches more than 70%.
The oversprayed powder is recovered by the system and returned to the powder supply tank, mixed with new powder in a certain proportion, and then reused.
Therefore, the powder The comprehensive utilization rate of coatings reaches more than 95%.
The remaining 5% of the waste powder is generally recycled by the coating company, and then handed over to the powder coating manufacturer for reprocessing before use, basically achieving zero emissions.

As we all know, the thickness of the coating film of solvent-based coatings is generally about 20um.
In order to achieve the decorative and protective properties of the coating film, solvent-based coatings often require multiple coatings, such as three coatings for the bottom, middle and surface, each coating Afterwards, heating and curing are required, and the energy consumption is high.

In contrast, TGIC powder coatings are characterized by thick coating, which can form a 60-120um thick coating film with only one coating, and the coating film only needs to be cured once, thus greatly saving the energy consumption of coating film curing.
Conventional powder coating curing conditions are 180～200℃, 10～20min.
In order to realize the sustainable development of powder coatings, TGIC powder coatings that can be cured at 135～140℃ have been developed in recent years, which is the sustainable development of powder coatings.
Provide a solid foundation.

5.
Safety problems and countermeasures of TGIC curing system powder coatings

The proven safety problem of TGIC curing system powder coatings is mainly the irritation to human skin.

The key to solving the safe use of TGIC powder coatings is to avoid contact of TGIC-containing powder coatings with human skin, that is, to reduce or control the generation of dust.
In fact, in industrial production involving solid dust, effective industrial dust prevention measures must be taken to control the concentration of dust in the air to avoid explosion accidents, prevent people from pneumoconiosis occupational diseases and reduce dust contact with people’s skin.
Powder coating manufacturers and coating companies must have a complete industrial dust-proof system to realize the safe production and use of powder coatings.

TGIC production: The production process of upstream TGIC products is basically a liquid phase fully enclosed type, and there is no problem of TGIC dust.

Production of TGIC powder coatings: the powdering process is (resin, TGIC, pigments and fillers, additives) feeding, pre-mixing, melt extrusion, tableting, cooling, grinding, and sieving.
In this production process, the processes that people may come into contact with dust are feeding and grinding.
With the help of the automatic feeding system, the improvement of the sealing performance of the mill and the perfect central dust collection system, the dust concentration in the plant can be controlled within a safe range far below the explosion limit of the powder coating.
Therefore, the powder coating company produced by the standard Both can well solve the potential safety hazards caused by dust contact.

The powder coating operation must be carried out in a powder room that can effectively prevent dust from overflowing.
In order to prevent the air turbulence in the production plant from affecting the powder loading rate, an isolation room needs to be established to separate the powder room from the production vehicle.
With the aid of the overspray powder recovery system (such as the cyclone separation device) and control the suction wind speed of each opening of the powder room, all the sprayed powder can be controlled in the powder room, effectively avoiding dust spilling into the production workshop.
This not only prevents the dust from contacting people's skin, prevents the occurrence of pneumoconiosis, but also avoids the occurrence of explosion accidents in the painting operation, and realizes the safe production of powder spraying.

In recent years, my country’s industrial dust removal system has made significant technological progress.
Fans, dust removal equipment, filtration equipment and filter materials have all made great progress, which has effectively promoted the safety production level of my country’s powder coating manufacturers and coating companies, and eliminated dust hazards for related companies.
Provided protection.

6.
Conclusion

In summary, TGIC curing system powder coatings are not "double-high products" with high pollution and high environmental hazards, nor are they included in the five types of products stipulated by the Ministry of Industry and Information Technology to eliminate backward products, namely: (1) Endanger production and personal safety.
Possess safe production conditions; (2) Seriously pollute the environment or seriously damage the ecological environment; (3) Products that do not meet national or industry standards; (4) Serious waste of resources and energy; (5) Other circumstances stipulated by laws and administrative regulations.

As long as the compliant and safe production conditions are met, TGIC and TGIC curing system powder coatings are harmless to the environment.
Compared with traditional solvent-based coatings, TGIC system powder coatings have obvious advantages in environmental protection and energy saving.
Environmental protection measures in accordance with national regulations by relevant powder coating manufacturers, such as the use of central dust collection systems, can effectively prevent dust from contacting the human body, and realize the safe production and use of TGIC powder coatings.
(Source: Global Coatings Network) (For more information, please log in: Global Coatings Network http:// )