Development and application of new processes and materials

Although natural latex has a prominent feature of containing water-soluble proteins, poor aging resistance (film crystallization), and air tightness, its outstanding comprehensive performance is difficult for other materials to achieve. Practice has proven that it is impractical to completely replace natural latex with synthetic materials, and it is not possible to completely replace it with synthetic latex at this stage or even for a longer period of time. In view of this, starting from raw materials to remove proteins or deproteinize natural latex is the preferred way to develop new materials and processes. The new processes that have been successfully developed internationally mainly include: ① Deproteinization using proteases to remove removed or free proteins. The main mechanism is to add certain natural

2024-01-09

Problems and Solutions in Rubber Processing

During the rubber processing, certain quality issues often arise, which hinder the smooth progress of production operations. Due to the high labor costs at present, there are significant losses during the period of work stoppage and waiting for materials. If corresponding measures are taken for most problems of the same type, these problems can be solved. The following is an introduction to the solutions based on the author's experience.

2024-01-09

Methods for handling quality issues such as uneven dispersion of sulfur, frost spraying, and burning

This is an old and new problem, and the problem that our predecessors should have solved is now being brought up again. Placing the sulfur stored in the warehouse on a cement board is not a good method from a moisture-proof perspective. It must be placed on a mat or pad, and sieving it before measurement is an effective method to prevent clumping. At this time, there is no need to use a too fine sieve, use 40 or 20 mesh, as long as the clumping in the powdered sulfur can be broken. In addition, in cases where the amount of sulfur added is small at once, it is better to add it while sieving on the open mill. In such situations, even if the sieve mesh is thicker, it is still possible.

2024-01-09

Usage and dosage of some accelerators

Promoters; For natural rubber and various synthetic rubbers, there are generally dithioamino acid salts, xanthates, and thiram type accelerators that belong to the category of super accelerators. There are thiazole type accelerators and a portion of aldehyde amine type accelerators for semi superheat. Moderate accelerators include thiourea, guanidine, and some aldehyde amine accelerators. Weak promoters include some aldehyde amine promoters and amine promoters. Sulfonamides are post acting promoters.

2022-07-28

The necessity of quality and cost

When it comes to the necessity of carrying out quality management, many enterprises can say many "big truths", but it is often heard that the heads of the quality management departments of many enterprises complain that when making specific decisions, leaders often prioritize "output first", "delivery time first", "cost first", and "price first". It can be said that "quality comes first when speaking, but quality comes later when doing", It seems that the concept of quality has evolved into a "moral concept" in business operations. The reason behind this is that the leadership of the enterprise has not clarified the relationship between quality and cost.

2022-01-10

Problems and Solutions in Rubber Processing

During the rubber processing, certain quality issues often arise, which hinder the smooth progress of production operations. Due to the high labor costs at present, there are significant losses during the period of work stoppage and waiting for materials. If corresponding measures are taken for most problems of the same type, these problems can be solved. The following is an introduction to the solutions based on the author's experience.

2021-11-12

Informatization will become the only way for small and medium-sized enterprises to enhance their competitiveness

Technological innovation is the key to core competitiveness. China Digital has built a strong information technology research and operation team, with nearly 2000 software development personnel. It is the chairman unit of the "Changfeng Alliance Internet Information Service Industry Promotion Working Group" of the Ministry of Science and Technology, and has truly proposed a SaaS service system with Chinese characteristics. With SPS as the core, it constructs standards and norms suitable for IT service operation in China. In terms of ICT infrastructure construction, China Digital has established professional data centers in Beijing, Guangzhou, Suzhou, and other places, achieving interconnection between North and South Telecom, building a high security and high reliability network environment, and having more than 3000 operational equipment; By establishing joint laboratories with companies such as Network App and HP, computing and storage pooling have been achieved; In the field of e-commerce, a pioneering e-commerce platform with on-demand and personalized services has been developed. We have applied for more than ten technology patents and become a pilot enterprise for patent engines in Beijing.

2021-11-12

Methods for handling quality issues such as uneven dispersion of sulfur, frost spraying, and burning

This is an old and new problem, and the problem that our predecessors should have solved is now being brought up again. Placing the sulfur stored in the warehouse on a cement board is not a good method from a moisture-proof perspective. It must be placed on a mat or pad, and sieving it before measurement is an effective method to prevent clumping. At this time, there is no need to use a too fine sieve, use 40 or 20 mesh, as long as the clumping in the powdered sulfur can be broken. In addition, in cases where the amount of sulfur added is small at once, it is better to add it while sieving on the open mill. In such situations, even if the sieve mesh is thicker, it is still possible.

2021-11-12

Development and technological progress of latex products

Latex products are widely used in industrial and agricultural production, medical and health, military industry, cultural and sports, and daily life due to their advantages of ultra-high elasticity, strong tactile sensation, good wearability, good orthopedic function, and good biological properties. The most common latex products include latex gloves, latex condoms, latex balloons, latex hoses, latex finger covers, latex filaments, and some latex products with special functional purposes. With the continuous improvement of people's living standards and the increasing progress of social civilization, the booming development of medical and health undertakings, the demand for latex products has gradually increased. At the same time, with the development of science and technology, the improvement of people's quality of life, and the strengthening of awareness of personal health and safety prevention, the correlation between the quality, hygiene performance, and personal health and safety of latex products is increasingly valued, Especially for latex products that come into direct contact with human skin, such as latex medical gloves and latex condoms, the safety of their use is of great concern. Therefore, the market has put forward higher and updated technical requirements for the intrinsic quality of latex products. In order to improve the intrinsic quality of latex products and better meet market needs, foreign scientific research, production, and testing engineering and technical personnel have carried out a lot of research and development work from raw materials, production technology, equipment improvement, and testing technology, continuously improving the quality of latex products and developing many new products, promoting the technological progress and development of the entire latex industry. This article provides a brief introduction to the development and technological progress of foreign latex products.

2021-11-09

Development and application of new processes and materials

Although natural latex has a prominent feature of containing water-soluble proteins, poor aging resistance (film crystallization), and air tightness, its outstanding comprehensive performance is difficult for other materials to achieve. Practice has proven that it is impractical to completely replace natural latex with synthetic materials, and it is not possible to completely replace it with synthetic latex at this stage or even for a longer period of time. In view of this, starting from raw materials to remove proteins or deproteinize natural latex is the preferred way to develop new materials and processes. The new processes that have been successfully developed internationally mainly include: ① Deproteinization using proteases to remove removed or free proteins. The main mechanism is to add certain natural

2021-11-09