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Manufacture of silicone hydride crosslinked non-halogen flame-proof polyvinyl chloride granula for cable by employing novel catalyst

A flame-retardant polyvinyl chloride and silane cross-linking technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of restricted application and uneven surface of the cable, and achieve reduced dosage, good smoke suppression performance, and good electrical performance. Effect

Inactive Publication Date: 2010-11-03
内蒙古睿达鑫科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pre-crosslinking problem of silane crosslinked PVC cable materials has always restricted the application of this type of material, mainly because the surface of the processed cable is not smooth
But in the field, there are few reports on the toxic effects on the human body

Method used

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  • Manufacture of silicone hydride crosslinked non-halogen flame-proof polyvinyl chloride granula for cable by employing novel catalyst
  • Manufacture of silicone hydride crosslinked non-halogen flame-proof polyvinyl chloride granula for cable by employing novel catalyst
  • Manufacture of silicone hydride crosslinked non-halogen flame-proof polyvinyl chloride granula for cable by employing novel catalyst

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Embodiment Construction

[0028] The technical solutions proposed by the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but are not limited thereto.

[0029] The invention provides a silane cross-linked halogen-free flame-retardant and smoke-suppressing polyvinyl chloride cable material, which uses the following materials: PVC resin, heat stabilizer, lubricant, cross-linking agent, flame retardant and synergist, Plasticizer, anti-pre-crosslinking agent, fatty acid catalyst. The PVC resin is SG-5 type resin, and the requirements of various performance indexes are: apparent density: ≥0.4g / ml; viscosity number: 107-118ml / g; volatile content: ≤0.5%. The thermal stabilizer refers to an auxiliary agent that can improve the thermal stability of PVC. Its function is to prevent or inhibit the release of hydrogen chloride during the production process of special materials, and at the same time maintain sufficient thermal stability during the use...

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Abstract

The invention discloses a formula for preparing silane crosslinking HFFR flame retardant polyvinyl chloride cable material by using a novel catalyst and a preparation technique thereof. The compositions by weight portion of the formula are: 100 portions of polyvinyl chloride resin, 10 to 100 portions of a plasticizer, 0.5 to 10 portions of a silane cross-linking agent, 0.5 to 6 portions of a heatstabilizer, 30 to 100 portions of a metal hydroxide flame retardant, 1 to 10 portions of a metallic compound flame retardant synergist, 0.1 to 5 portions of a preventing cross-linking agent, 0.1 to 5portions of a lubricant, 0.1 to 0.5 portion of an antioxidizer, 0.2 to 1 portion of fat acid catalyst and appropriate amount of a colorant. The cable material has the characteristics that the mechanical property is good, the heat resistance is good, the electrical property is good, the specific volume resistance is increased by 3 to 5 times compared with the uncrosslinked PVC cable material, the insulating property of the cable is improved and the aging property is good. The catalyst utilized in the cable material is fatty acid substance which does not break down, does not boil away at the PVC processing temperature and is nontoxic.

Description

technical field [0001] The invention belongs to the technical field of cable materials, and in particular relates to a formula and a process for preparing silane crosslinked halogen-free flame-retardant polyvinyl chloride cable materials by using a novel catalyst. Background technique [0002] In recent years, with the development of my country's electric power industry and communications, the demand for cable materials has increased rapidly. Among the types of cable materials, polyvinyl chloride (PVC) cable materials are the most used varieties, accounting for about 80% of the total cable materials. According to preliminary statistics, in 2007, the total domestic demand for cable materials was around 500,000 tons. In order to reduce the space occupied by cables, it is the general trend to increase the laying density of cables. The non-cross-linked varieties of PVC cable materials currently used in China are difficult to meet this demand. Compared with non-cross-linked cabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/54C08K3/22C08K5/09C08K3/24C08K3/34B29B9/12B29C47/92H01B7/295B29C48/92
CPCB29C48/9185B29C48/04B29C48/92B29C2948/9259B29C2948/92704B29C2948/92828B29C2948/92866B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 滕谋勇邵鑫徐保良冷海强
Owner 内蒙古睿达鑫科技有限责任公司
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