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Halogen-free flame-retardant casing material for protecting automotive rubber tube

An automotive rubber hose and sleeve technology, applied in the field of sleeves, can solve the problems of poor flame retardant performance, easy to wrinkle, contain halogens, etc., and achieve solvent resistance and mechanical properties. Effect

Inactive Publication Date: 2013-09-04
TIANJIN CHANGYUAN ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mainly used for the external protection of rubber hoses in automobile fuel and cooling systems. It has the disadvantages of containing halogens, poor flame retardancy, rough surface, and easy wrinkling at the bends of rubber hoses after shrinkage, which affects the application and application of heat shrinkable sleeves. The safety of the car, there are technical flaws

Method used

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  • Halogen-free flame-retardant casing material for protecting automotive rubber tube
  • Halogen-free flame-retardant casing material for protecting automotive rubber tube
  • Halogen-free flame-retardant casing material for protecting automotive rubber tube

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Embodiment

[0033] Take 100 kg of EVA resin, 40 kg of LDPE resin, 40 kg of polyolefin elastomer, 110 kg of aluminum hydroxide 250 mesh, 10 kg of red phosphorus, 5 kg of tetraerythritol ester (antioxidant), and 5 kg of silane (coupling agent) 5 kg of color masterbatch mixed and granulated to obtain halogen-free retardant fuel for automobile rubber hose protection. It is extruded into a tubular shape by equipment to obtain a halogen-free flame-retardant sleeve for automobile rubber hose protection; it is modified by high-energy electron beam radiation; and finally expanded by an expansion machine to obtain a halogen-free flame-retardant heat-shrinkable sleeve for automobile rubber hose protection. The inner diameter before shrinkage is 30mm, and the wall thickness before shrinkage is 0.5mm. The inner diameter after shrinkage is 15mm, and the wall thickness after shrinkage is 1.0mm.

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Abstract

The invention discloses a halogen-free flame-retardant casing material for protecting an automotive rubber tube. The material is obtained by mixing and granulating components in parts by weight as follows: 80-100 parts of an EVA (ethylene vinyl acetate) resin, 30-45 parts of an LDPE (low-density polyethylene) resin, 30-50 parts of polyolefin elastomer, 108-145 parts of an inorganic halogen-free flame retardant, 3-10 parts of an antioxidant, 2-8 parts of a coupling agent and 3-8 parts of a color master. Compared with an ordinary automotive rubber tube flame retardant material, the halogen-free flame-retardant casing material adopts an inorganic halogen-free flame retardant system, so that no harm is produced to the environment; and the material has the advantages of softness, friction resistance and the like. The halogen-free flame-retardant casing material can be widely applied to casings for industries producing automobiles, electronics and the like.

Description

technical field [0001] The invention belongs to the technical field of sleeves, in particular to a halogen-free flame-retardant sleeve material for automobile rubber hose protection. Background technique [0002] At present, the heat shrinkable sleeve flame retardant is a polyolefin compound. Heat-shrinkable sleeves are mainly based on EVA or PE raw materials, and various auxiliary materials are added: flame retardants, antioxidants, coupling agents, color masterbatches, fillers, etc. Mix it evenly with a high-speed mixer, and then granulate it with a twin-screw or internal mixer. Most heat-shrinkable sleeves on the market use halogen-based flame retardants on the basis of EVA or PE as the base material to achieve flame-retardant purposes; they will release a large amount of halogen-containing gas during combustion, not only It will cause certain pollution to the atmosphere, and it will also cause certain harm to the human body. [0003] At present, automobile rubber hose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L23/00C08K13/02C08K3/22C08K3/02
Inventor 张立
Owner TIANJIN CHANGYUAN ELECTRONICS MATERIAL
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