Committed to the development of soft, toughness, reduce the financial burden of subcontracted wire ~ S - FREE ™ development secret ~ (1)
Response diversification and upgrade the user requirements
Industry was a cable wire business career in a field, due to its object supplier involved extensive industry, along with the social changes at the same time, the customer requirements of product quality and characteristics are diverse, so the business gradually separate and independent from the cable business.In 2014, is a major turning point.Among all kinds of industrial electrical wiring, sumitomo electric industries focus on after the related company is responsible for the "rubber insulated cable" and "machine and panel wiring wire", for its to sumitomo electric as a brand and to carry out related operations.The background is to society and the change of user requirements.Sumitomo electric产业电线株式会社代表取缔役社长日浦孝久指出：
"After entering the 21st century, people to improve the productivity and efficiency have higher requirements, and constantly promote the reform of production site and technical innovation.Using rubber insulated cables of various demand on the construction site, I think 'development of flexible and rapid response to the demand and supply of products' is a huge business opportunities, also is the mission of sumitomo electric group."(pu)
"Demand" of the construction site, pu said what mean?Rubber insulated cable is used in the harsh, for example, the construction site.In addition, because this kind of cable is not fixed wiring, but mobile with power supply cable, cable itself so easily suffer from external factors.So its abrasion resistance, impact resistance, water resistance, heat resistance, softness and flame retardant properties have been strict requirements.In this context, sumitomo electric and named it "S - FREE ™", began to promote the brand relevant measures.
Through communication to grasp the "true" needs of customers
In the brand, what subject should focus on the user's to develop the product?Need by business act as a focal point to find out right now, because they are in the market the forefront closely contact with the user.Industrial wire division department see big bo tzu is a technology for the business support staff.At ordinary times, see through the market analysis and communication between the user and try to grasp the customers "needs".
"We are around the new products and improved product looking for inspiration.That must, of course, help to solve the user task.By questioning the demand of the actual construction personnel or visit the construction site, there will be many opportunities found associated with development of enlightenment.In addition, I think the customer demand is not constant, it will change with construction environment and construction personnel."(see)
For example, the east Japan earthquake, the benchmark of the cable in the power plant become more strict.In the benchmark of increasingly strict, one is flame retardant.To meet the requirements of flame retardant related, must be developed through "vertical tray fire test (officially designated the combustion test method) was one of the" rubber insulated cable coating material.Although cladding material for CR rubber (CR), but at the same time in order to meet the material properties such as tensile strength and the flame retardancy, the requirements of the relevant to find out the most suitable mixing ratio.The following will introduce what sumitomo electric around this kind of development subject.
Improve the modulation technique
Modulation cladding material, sumitomo electric group adhere to within the group, to promote the process of research and development to manufacture.On this basis, in the development and easy to use wire and cable, everyone will from the conductor to the cladding materials of all the materials are discussed.About the materials used, sumitomo electric wires are not limited to industry field, technology and materials used will use all kinds of fields in the development of technology.
"Rubber insulated cable with the machine and panel wiring wire coating material for polymer composite materials, materials development is modulation technology, which developed the best 'menu' materials and additives.Sumitomo electric group in electric power, automobile, information communication and electronics and other fields of the continuous development, has accumulated rich experience, and on this basis, have a high level of modulation technology.This became the creation motive force and corresponds to the customer demand products.In ascension, of course, rubber insulated cable is used when the flame retardancy of these technologies."(the minister of energy and electronic materials research institute of polymer materials technology research give letter also)
The new requirements of ™ S - FREE products
So, to achieve the brand (S - FREE ™) rubber insulated cable with machine and panel wiring wire, in addition to achieve the necessary characteristics, what concerns?
Recently, in the electric vehicle (EV) charging cable also began to use rubber insulated cable technology.Due to repeated loading and unloading of battery charge when using connectors, EV charging cable will be drag on hard surfaces such as concrete, so it must have a high drag resistance (abrasion resistance).But if only improve wear resistance, usually cause material to harden, which cable was difficult to bend.
In our energy and electronic materials research institute, high polymer material research and development of polymer materials technology research department is responsible for the development of the coated materials.Electronic electrical material group of cane aso hetian xing xing is its core members.
"EV charging cable to the wear resistance is required, but considering the common users in the use of the process, we think that the cladding material softness is also very important, because it will affect the softness of the cable.If a can improve the wear resistance, usually will cause the material to harden.These two properties in a reciprocal relationship, how to balance these two properties is the key."(fujita)
Fujita began to focus on CR rubber and mineral particle composite (packing).He spread filler in rubber, hard packing to reduce drag and drop caused by the wear, and enhance the wear resistance.Fujita found from several packing can avoid special packing material to harden, developed both wear resistance and softness of the best "menu (mixing ratio).
Recently, the active adoption of environmental protection cable companies are increasing, environmental protection cable is to realize the SDGs (target) sustainable development one of the means, help to realize the sustainable development of society.Although in manufacturing rubber insulated cable will also actively using environmentally friendly materials, but generally speaking, the environmental protection material is more hard than ordinary cladding material, and therefore difficult to use.
"One thousand fire, used in the ordinary rubber insulated cable in CR rubber will generate harmful gases such as hydrogen chloride.In green rubber insulated cable material used the olefin synthetic rubber, namely the EP (ethylene propylene rubber, realized by halogen free flame retardant flame retarding can meet the required features such as flame retardancy and mechanical strength, but at the moment, there are the same topic, that is how both cladding materials of softness and abrasion resistance."(field)
The molecular structure of the field is a focal point in the EP rubber.Most of the rubber is composed of soft non-crystalline molecular structure, contains only a small amount of crystalline structure.Reduce hard crystalline structure can enhance softness, but strength will also decline.At this point, he extended the EP rubber molecule chain and improve link degree, and thus improve the mechanical strength.Tanaka thus successfully developed a very easy to use environmental protection rubber insulated cable, it has to be the same soft rubber insulated cable.
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Committed to the development of soft, toughness, reduce the financial burden of subcontracted wires
~ S - FREE ™ development secret ~ (2)