Liaoning Xinda Talc Group - Jia Weidong
The earliest foaming was a processing technology that used rubber as the main material and formed porous structures through physical, mechanical, or chemical foaming agents. The gas generated by foaming technology forms closed or interconnected structures during the rubber vulcanization process, endowing the material with characteristics such as lightweight, thermal insulation, and elasticity. It is widely used in the fields of shoe materials, automotive seals, home appliance insulation layers, seat backrests, and seat cushions. In the early days, natural rubber was the main type of foam rubber. Nowadays, a large number of natural latex mattresses, pillows, etc. in Jiangsu and Zhejiang regions still use natural rubber as a selling point. Later, due to the higher stability of synthetic rubber, nitrile rubber, butadiene styrene rubber, ethylene propylene rubber, etc. were gradually developed with the increasing application of foam materials. With the development of modern industry, EVA、 Many synthetic materials such as polyurethane and spandex have also adopted foaming technology and have been widely used in home, chemical, medical, construction, and even aerospace fields.
Talc powder, as an important filling material for foaming materials, not only has a cost reducing effect.
1. Talc powder is used in rubber systems to improve the processing performance of rubber. It can reduce the viscosity of the system, increase the flowability in the mold, quickly fill every corner of the grinding tool, and reduce direct defects in the appearance and physical shape of the product.
2. For the test results of NBR rubber vulcanized with sulfur, compared with the addition of carbon black, it reduces the reaction with soluble zinc salts and accelerators, and reduces the rubber burning time.
The sheet-like structure of talcum powder forms stacked bridges and planar self orientation during processing, thereby increasing the damping value of the material, increasing the resilience of the foam material, and reducing the time for permanent deformation. This is an important indicator in some foam material applications, such as shoe materials, bed mats, yoga mats, etc. Due to its high resilience and strong tactile sensation.
4. Talc powder acts as a nucleating agent in rubber and many polymer synthetic materials. Uniformly dispersed nucleation can make foaming more uniform, and foaming materials have better wear resistance, reinforcement, tear resistance, etc.
Due to the chemical stability of talc powder, it can improve the weather resistance and corrosion resistance of materials, and its environmental adaptability can expand its application scenarios to many industrial fields.
Compared to other inorganic fillers, talc powder has better dispersibility in the system, which is helpful for on-site processing and mixing, improving processing efficiency, reducing processing time and costs.
7. As for talc powder itself, the higher the purity and fineness, the better the performance of the finished product. However, in practical applications, users generally choose talc powder with a talc content of about 80% and a fineness of 1250-2500 mesh in the foaming industry of rubber and polymer synthetic materials, considering cost-effectiveness.
In foam rubber and other foam materials, the competition for fillers is also extremely fierce, such as montmorillonite, calcium carbonate, aluminum hydroxide, attapulgite, carbon black, white carbon black, graphite, illite, diatomaceous earth, mica, etc., all of which are expressing their advantages. From a technical perspective, in the research and development of material formulation systems, how to fully utilize the characteristics of various fillers, materials, and additives to form synergistic effects, in order to maximize the satisfaction of end users' needs, and also to achieve stable and efficient processing while minimizing costs.
The talc powder of Liaoning Xinda Group has been widely used in EVA shoe materials, RBR insulation, PU foaming, etc., such as SD-9441, SD-9045, SD-9042, SD-9272, SD-9488 and other products with different characteristics to meet the needs of different customers,
The following characteristics of talc powder from Liaoning Xinda Group have been recognized by technical personnel in the field of foaming:
1. The raw materials have undergone regular type testing by SGS and are free of asbestos and harmful heavy metals, which directly shields the risks of the raw materials for export products and products that come into contact with the human body. The surrounding rock of talc ore is mainly magnesite with low content of other impurities, which has no adverse effect on additives in chemical foaming and rubber vulcanization systems. It can stabilize the process formulation system and production process operation, and extend the anti-aging time.
2. The Haicheng Fanjiabao vein talc mine has the advantage of a sheet-like structure. The grinding equipment and powder processing technology jointly developed by Xinda Group and equipment manufacturers ensure that the talc powder has a high diameter to thickness ratio and flaking ratio. The rebound and permanent compression deformation indicators of non through foaming are greatly affected.
3. We attach great importance to our self-developed grading equipment to ensure uniform particle size distribution, especially the control of cutting points without large particle peaks, which reduces the risk of stress concentration points in foam materials and effectively improves their mechanical properties.
4. High whiteness, low yellow hue, easy color matching.
5. Different raw materials are selected for users in different industries, including batch processed raw materials and mass-produced talc powder, to ensure batch consistency and stability. Customers can directly enter production without inspection, and foam production runs stably.
Welcome to choose various series of talc powders from Xinda Group, and also welcome cooperation with Xinda talc research and development center to jointly develop higher performance products.
