Olefin-based rubber highly flame-retardant and oil-resistant heat-shrinkable sleeve and preparation method thereof

A heat-shrinkable sleeve and high flame-retardant technology, which is applied to tubular objects, other household appliances, applications, etc., can solve the problems of high vulcanization cost, high vulcanization cost, and slow vulcanization speed, and achieve high flame-retardant performance and strong price Advantages, excellent oil resistance effect

Active Publication Date: 2011-12-14
HUBEI XIANGYUAN NEW MATERIAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses different types of plastic called Polypropylenebrubbers or Ethyiene Propyne Different Plastomodifiers Examples include Siloxane Resin Beads®, PEEK™ resins, Cyclodextrin Blends, Cross Linked Polysiloxanes, Stabilizers, Additive Compounds, Fluorescent Luminescence Materials, Antiinflammatory Agents, Antifreeze Factor Components, Thermal Expandability Modifier(TMA). These components help improve properties like fire retarding property, reduced emissions during combustion, lower weight per unit volume compared to traditional methods that require expensive chemicals. They also prevent damage from environmental pollution caused by these compound gases.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the durability and performance of traditional type olefins heat-expanding tube products that have low oil resistivity without being fireproofed due to their lack of flammability properties during manufacturing process. Current methods involve expensive processes such as injection into plugs with added chemicals or compression moldings for better bond between layers inside them.

Method used

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  • Olefin-based rubber highly flame-retardant and oil-resistant heat-shrinkable sleeve and preparation method thereof
  • Olefin-based rubber highly flame-retardant and oil-resistant heat-shrinkable sleeve and preparation method thereof

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preparation example Construction

[0021] An olefin-based rubber highly flame-retardant and oil-resistant heat-shrinkable sleeve and a preparation method thereof, the preparation method sequentially comprising the following steps:

[0022] Step 1: Preparation of product pellets: Add 60-80Kg EPDM (EPDM rubber, imported from Japan, model EP57P), 20-10KgEEA, 20-10KgPOE, 5-10Kg methyl Vinyl silicone rubber, then start the internal mixer, the internal mixing temperature is 80-130 ℃, internal mixing 1-2 minutes; then add 100-120Kg magnesium hydroxide, 5-10Kg zinc borate, 0.5-1Kg methyl phenyl silicone oil, 0.3-0.6Kg antioxidant 1, 0.2-0.3Kg, antioxidant 2, 0.2-0.3Kg, cross-linking agent TMPTMA, 3-5Kg No. 10 white oil, 0.5-1Kg zinc stearate, 1-2Kg paraffin wax In the internal mixer, continue banburying for 7-8 minutes, and then discharge the banburyed materials into the parallel twin-screw granulation unit, melt and extrude, pelletize the underwater die surface, dry the particles after dehydration, and prepare Finish...

Embodiment 1

[0040] Embodiment 1: An olefinic rubber high flame-retardant and oil-resistant heat-shrinkable sleeve and its preparation method, the preparation method comprises the following steps in sequence:

[0041] Step 1: Preparation of product pellets: Add 60Kg EPDM (grafted modified EPDM rubber, grafted monomer: AN (acrylonitrile), grafting rate 15%) to the internal mixer in the following order, 20KgEEA (ethylene-octene copolymer, EA content 30%, ethyl acrylate content (weight), 20KgPOE (ethylene-octene copolymer, model POE8656), 5Kg methyl vinyl silicone rubber (type 110-2, molecular weight 650000, vinyl content 0.16%), then start the mixer, mixer temperature 80-130 ℃, mixer 1-2 minutes; then add 100 Kg magnesium hydroxide, 5Kg zinc borate, 0.5Kg methyl phenyl silicone oil, Add 0.2Kg antioxidant 1 (70% antioxidant 1010+30% antioxidant DSTDP), 0.2Kg antioxidant 2, 0.3Kg crosslinking agent TMPTMA, 3Kg white oil, 0.5Kg zinc stearate, 1Kg paraffin Put it into the internal mixer, contin...

Embodiment 2

[0046] With embodiment 1, the difference is the first step: get 80KgEPDM, 10KgEEA, 10KgPOE, 10Kg methyl vinyl silicone rubber, 120Kg magnesium hydroxide, 10Kg zinc borate, 1Kg methylphenyl silicone oil, 0.3Kg antioxidant 1 (antioxidant 300), 0.3Kg antioxidant 2, 0.6Kg crosslinking agent TMPTMA, 5Kg white oil, 1Kg zinc stearate, 2Kg paraffin.

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Abstract

The invention relates to an olefin rubber high-flame-retardant oil-resistant heat-shrinkable bush. The olefin rubber high-flame-retardant oil-resistant heat-shrinkable bush is prepared from basic materials of olefin rubber granules such as ethylene propylene diene monomer (EPDM), ethylene-ethyl acrylate copolymer (EEA) and ethylene-octene copolymer (POE), as well as silicon rubber (methyl ethylene silicon rubber), a special environment-friendly halogen-free compound flame retardant, a composite antioxidant and related aids by using equipment such as an internal mixer, an extruder, an electronic accelerator, a heating expanding machine and the like. The product does not contain harmful substances such as heavy metal, halogen and the like, and has high fire resistance and low smoke; the oxygen index of the material reaches 45; the fire resistance of the product passes UL94-5VA grade through a test; the product can be used at the temperature of between -50 and 150 DEG C for a long time; when the product is used for a short time, the temperature reaches 250 DEG C; and the product has excellent oil (aviation oil, fuel oil, machine oil, lubricating oil and the like) resistance.

Description

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Claims

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Application Information

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Owner HUBEI XIANGYUAN NEW MATERIAL TECH INC
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