If CT attenuation value and the rate is higher, The better the shielding performance of material to X-ray. As the density increase, the CT value of composite materials is also increasing. This is because the tungsten is a major component for X-ray shielding, and its content directly affects the shielding effect. The CT value of the composite material with 11.0g/cm3 density reaches 17,500, close to the CT value of the lead, it is indicating that the tungsten nylon composite material can be used as shielding for X-ray shielding. Further, the attenuation rate of tungsten nylon shielding to X-ray increases with the density. When the density reaches 11.0g/cm3, the attenuation rate is 97%, and the attenuation rate to X-ray remains stable.
 

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

The impact properties of Tungsten metal to tungsten nylon shielding as follows:

1. When receiving impact load, tungsten metal particles distributed within the collective nylon may cause crack deflection, suppressing tungsten nylon shielding composite fracture, and then improve the impact strength;

2. As there is a interface between the tungsten metal particles and nylon matrix, the gap at the interface can be used as a crack source, to reduce the impact strength. For the high density tungsten nylon shielding, tungsten metal particles play a major role in reducing the impact.
 

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

As the density increases, the impact strength of tungsten nylon shielding material successively reduced, but when low density, the moderate amplitude of impact strength is low. When the density is 8.8-11.0g/cm3, the data increases linearly, this is because with the increase of the content of tungsten particles, the voids at the interface also increases linearly, and the impact strength of the composite material with 11.8g/cm3 density decline larger, which is due to high levels of tungsten powder, can not fully wrapped nylon collective particles, the voids at the interface is bigger, so that impact strength has a sharp decline. In the whole, the impact strength of the 11.0g/cm3 density composite has a smaller decline in the acceptable range.

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Research indicates that if density of tungsten nylon shielding material is below 11g/cm3, the composite material can meet the flow behavior of pseudoplastic fluids. When attains 11.8g/cm3 density, since the melt will not have shear-thinning properties, it will not suitable for injection molding. In addition, as the density increases, the shear rate on the non-Newtonian index becomes weaker. When the density is 11.0g/cm3, the shear rate on non-Newtonian index changes caused only minor changes in the non-Newtonian index. As the flow stability have a significant impact on the performance of the final product, the non-Newtonian index changes smaller, flow properties is more stable. Therefore, the 11.0g/cm3 density of the composite material is suitable for injection molding.
 

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten materials with high density and high atomic coefficients for X-rays have a good shielding performance, it is used as a non-toxic environmentally friendly materials to replace lead in X-ray protection fields. Nylon has excellent flow processing performance, ease of processing into a variety of complex shapes products. Regular arrangement of the molecular structure of nylon and the presence of a large number of hydrogen bonds, it has excellent mechanical properties, chemical properties, and thermal properties. Many automobile, electronics, machinery, aerospace and other fields has been widely used because of superior processing performance, physical properties and mechanical properties of nylon. Tungsten powder was added to the nylon matrix as filler, so it can give the nylon the shielding performance, forming several of complex composite shielding material.
 

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Because of the following excellent properties of tungsten such as high density, high melting point, small volume, excellent hardness, superior wearing resistance, high ultimate tensile strength, high ductility, high temperature resistance, low vapor pressure, gold-plated paperweight, tungsten alloy golden paperweight are the most popular handicraft nowadays.




Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Radiation shield capacity is closely related to the density of the material, the greater density, better the shielding performance, therefore, tungsten alloy which has a high density becomes the best shield material. Tungsten alloy shields include gamma radiation shielding, shielding blocks, oil drilling equipment, X-ray collimator, tungsten alloy PET shield, shielding cancer treatment equipment etc. More and more radiation shielding equipment demand is growing now. China tungsten alloy shield distribution supply structure is as follows:

1. Domestic and international product supply structure.



2. Domestic regional supply structure.


 

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Early medical shield is made ​​of lead, but lead shield’s hardness is low, will cause the secondary pollution and poisoning. Relative lead shield medical, high density tungsten alloy medical shield is resistance to acid, wear-resistant properties. Moreover, lead belongs to heavy metal pollution, it is harmful to the environment, but the tungsten alloy is kind to the enviroment. Therefore, tungsten alloy replace lead, becoming the material for medical shield.

Tungsten alloy shield including radiological protection gallipot medical, radiation shielding storage, agamma radiation shielding, shielding blocks, oil drilling equipment, and X-ray collimator.

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Although tungsten alloy shield has good radiation protection performance, mechanical properties, compressive strength, and environmental friendly, but its price is 13 times higher than lead shield, so choose the right shielding materials based on different occasions, individual equipment surrounding and efficient use.

For example, in nuclear power plants, due to the adaptability of existing inventory, cost and lead shielding materials stocks, replacing the overall lead with tungsten is not realistic. Under normal conditions, when the lead shielding can meet the requirements although reducing the amount, there is no need to use tungsten shielding. When faced with specific applications, such as underwater applications, the shield case structure, or severely limited space, or the mechanical properties and mechanical strength such important places, tungsten shielding can effect the function.


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Lead shielding has insurmountable drawbacks, such as it will generate a secondary bremsstrahlung, hardness is low, and the lead itself is heavy metal pollution, it will lead to heavy metal toxicity during use.

Opposite to the lead shielding, tungsten shielding do not react with the particles, and it is non-toxic, can better overcome the drawbacks of lead shielding and eliminate the toxicity hazards associated and mixed waste disposal costs.

Tungsten is sufficient now, but the price is much higher than lead, however, the cost difference can not conceal the advantage of tungsten shielding.


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn