Irradiation cross-linked polyethylene insulation using the modified material after the completion of allogeneic manner by extrusion shield 1 + 2 - insulation - extruded insulation shield layer, the insulated core cooled, even by high energy Scanning electron accelerator irradiation window to complete the cross-linking process. Irradiation cross-linked cable compound crosslinking agent is not added when crosslinked by high-energy electron accelerators produce high energy electron beam effectively penetrate the insulating layer, resulting in a crosslinking reaction by energy conversion, because the electron with high energy and uniformly through the insulating layer, so crosslinks to form a joint energy, good stability. Exhibit physical properties, heat resistance superior to chemical cross-linking cable. However, due to the energy level of the accelerator (usually no more than 3.0Mev electron beam effectively penetrate the thickness of 10mm or less, by the geometric factor, producing cable voltage rating can only reach 10KV, 6KV advantage in the following [1]. Vv process described in detail crosslinked insulated wire and cable has excellent electrical properties, good operational safety performance and thermal overload mechanical properties, as well as installation and operation easy maintenance and so on. crosslinked wire and cable insulation mechanism is the use of physical or chemical methods, the polymer insulation material transition from linear molecular structure into three-dimensional network structure made of a thermoplastic material into a thermosetting insulating material, thereby enhancing the anti-aging properties of insulating materials, mechanical properties and resistance to environmental capacity of the United States from the fifties invention crosslinked insulated wire and cable, sixties gradually applied. Over the past decade, the country will also increasingly widespread use of cross-linked insulation, it replaces the oil-paper insulation, and is gradually replacing PVC plastic insulated crosslinked insulation of many varieties, from the mechanism of crosslinking divided into two major categories, namely physical crosslinking and chemical crosslinking 1, the chemical crosslinking: chemical cross-linking and cross-linking points and low temperature crosslinking two methods (1), also known as high-temperature crosslinking peroxide cross. Union, commonly used organic peroxide as a crosslinking agent, in the role of heat, decomposition of active free radicals, these radicals produce the carbon chain of the polymer on active sites, and generate CC crosslinks form three-dimensional network structure includes a steam temperature crosslinking crosslinking and dry forms of cross-linking the two processes, foreign XLPE cables are mostly used in the sixties steam crosslinking process, because the steam crosslinking insulation moisture content increases, poor insulation quality , has been completely eliminated; start seventies, widely used abroad dry cross-linking process, using high-pressure pipeline sulfide, rapid heating methods crosslinking (2), also known as low-temperature crosslinking or silane crosslinking warm crosslinking. Cable cross-linking in warm water 70-90 ℃, the insulation of the cross-linking agent - silane after absorption of water, the reaction of the linear structure network crosslinked structure 2, physical crosslinking: also known as radiation crosslinking. divided γ- ray crosslinking and electron beam crosslinking of two ways. (1) γ- ray dose is low due to the crosslinking irradiation process can not penetrate the cable core, so currently only in heat-shrinkable material crosslinking has applications, and wire and cable manufacturers generally do not use γ- radiation crosslinking. (2) electron beam cross-linked by electron beam accelerators with irradiated device, using high-energy electron beam (general energy 1.0-3.0 between MeV) of wire and cable insulation layer is irradiated, causing the polymer material to generate free radicals formed CC crosslinks to form a three-dimensional network structure http://mayu1991619.jdzj.com/ http:. //mayu1991619.b2b .youboy.com / http://m1991619.cn.china.cn/ http://mayu1991619.955101.com/ http://mayu1991619.cn.gongchang.com/ http://www.datoumao.com/gongsi / mayu1991619 / http://www.kejiqi.org/corp/mayu1991619/ http://mayu1991619.8j8.cc/ http://mayu1991619.cn.b2b168.com// http://www.sooshong.com http : //www.cntrades.com/b2b/mayu19911619/