Nano modified halogen-free flame-proof environmental protection heat-shrinkable material and preparation method thereof

A nano-modification and heat-shrinking technology, which is applied in the field of materials, can solve the problems of inability to produce high-performance heat-shrinkable tubes, decrease in mechanical properties and processing properties, and increase in product waste and defective rate, so as to reduce casualties and property losses , Improved dimensional stability and improved processing performance

Active Publication Date: 2007-02-28
广州凯恒科塑有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will lead to a decline in the mechanical properties and processing properties of the base material, making it impossible to produce high-performance heat-shrinkable tubes, increasing the waste rate of products, demanding equipment, and high production costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) at first with ethylene-vinyl acetate copolymer (EVA) 10kg (the content of vinyl acetate accounts for 40% weight, melt index is 3g / 10min), maleic anhydride copolymerization modified ethylene-acrylate copolymer 10kg ( The copolymer content accounts for 5.0% by weight, and the melt index is 5.0g / 10min), organic montmorillonite 10kg (organic modifier is an organic amine salt) is added in the high-speed mixer and stirred at high speed for 3 to 5 minutes, and the mixed material is used The twin-screw extruder extrudes, wire-draws, air-cools, and pelletizes in the range of 100-160°C.

[0029] (2) 15kg of pellets made in the first step, 85kg of ethylene-vinyl acetate copolymer (EVA) (the content of vinyl acetate accounts for 20% by weight, and the melt index is 6g / 10min), maleic anhydride copolymerized Modified ethylene-acrylate copolymer 5kg (the copolymer content accounts for 5.0% by weight, and the melt index is 5.0g / 10min), polydimethylsiloxane 10kg, antioxidant four [b...

Embodiment 2

[0034] (1) at first ethylene-vinyl acetate copolymer (EVA) 10kg (the content of vinyl acetate accounts for 28% by weight, melt index is 3g / 10min), maleic anhydride copolymerization modified ethylene-vinyl acetate copolymer 10kg (the copolymer content accounts for 15.0% by weight, and the melt index is 15.0g / 10min), organic montmorillonite 10kg (organic modifier is alkyl quaternary ammonium salt) adds high-speed stirring in high-speed mixer 3~5 minutes, will mix well The raw material is extruded, wire-drawn, air-cooled and pelletized with a twin-screw extruder at 100-160°C.

[0035] (2) 30kg of pellets made in the first step, 80kg of ethylene-vinyl acetate copolymer (EVA) (the content of vinyl acetate accounts for 28% by weight, and the melt index is 3g / 10min), polydimethyl Siloxane 5kg, antioxidant β-(4-hydroxy-3,5-di-tert-butylphenyl) n-octadecyl propionate (antioxidant 1076) 0.5kg, thiodipropionic acid di(octadecyl) ) ester (DSTP) 1.0kg, surface unactivated superfine magnes...

Embodiment 3

[0040] (1) at first ethylene-vinyl acetate copolymer (EVA) 10kg (the content of vinyl acetate accounts for 40% by weight, melt index is 1g / 10min), maleic anhydride copolymerization modified ethylene-vinyl acetate copolymer 10kg (the copolymer content accounts for 10.0% by weight, and the melt index is 5.0g / 10min), organic montmorillonite 10kg (organic modifier is alkyl quaternary ammonium salt) adds high-speed stirring in high-speed mixer 3~5 minutes, will mix well The raw material is extruded, wire-drawn, air-cooled and pelletized with a twin-screw extruder at 100-160°C.

[0041] (2) 45kg of pellets made in the first step, 70kg of ethylene-vinyl acetate copolymer (EVA) (the content of vinyl acetate accounts for 28% by weight, and the melt index is 3g / 10min), polydimethyl Siloxane 5kg, antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester (antioxidant 1010) 1.5kg, thiodipropionic acid di(deca Eight) ester (DSTP) 1.5kg, superfine mag...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
electric potential / voltageaaaaaaaaaa
thermal shockaaaaaaaaaa
Login to view more

Abstract

The invention discloses a nanometer modified no-slat inflaming retarding protection thermal pinch material and preparing method, which comprises the following steps: mixing up the material by weight; piling out; pelleting; squeezing pipe; cross bonding; heating; expanding; cooling and forming. The invention has good inflaming retarding effects, which is a kind of environment friend product.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a nano-modified halogen-free flame-retardant and environment-friendly heat-shrinkable material and a preparation method thereof. Background technique [0002] Heat-shrinkable materials, also known as polymer shape memory materials, are intelligent materials that combine polymer materials with radiation processing technology. Ordinary polymer materials usually have a linear structure. After being irradiated by a radioactive source such as an electron accelerator and becoming a network structure, these materials will have a unique "memory effect". The expanded, cooled and shaped materials can shrink and recover after being heated. original shape. Since its development in the middle of the 1950s, heat-shrinkable materials have become important functional materials, widely used in the sealing and anticorrosion of chemical and petroleum pipelines, the ins...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08J3/24C08J3/28C08K9/04B29C47/40B29D23/00C08L83/04C08K3/22C08K5/36
Inventor 胡晖张有勇申景强
Owner 广州凯恒科塑有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap