Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Halogen-free flame retardant polyester with laser marking function and preparation method thereof

A laser marking and flame-retardant polyester technology, which is applied in the field of polymer processing, can solve the problem of low laser energy absorption rate of halogen-free flame retardants, failure to meet flame-retardant requirements, and no halogen-free flame-retardant polyester materials, etc. problems, achieve excellent flame retardant effect, meet the assembly and use environment, and have good effect

Active Publication Date: 2012-07-18
KINGFA SCI & TECH CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The existing plastic materials for laser printing logos are either ordinary plastics or reinforced toughened plastics or halogen flame-retardant reinforced plastics. For the former, it cannot satisfy many electronic requirements. , the flame retardancy requirements of the electrical industry, for the latter, it cannot be popularized and used in industries where halogen is strictly controlled, such as IT, relays, low-voltage electrical appliances, etc.
For laser engraving of halogen-free flame-retardant plastics, due to the low absorption rate of laser energy by halogen-free flame retardants, the imprint of the logo is often blurred
[0005] Therefore, there is still no halogen-free flame-retardant polyester material product with laser printing marking function

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Halogen-free flame retardant polyester with laser marking function and preparation method thereof
  • Halogen-free flame retardant polyester with laser marking function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The preparation method adopted in following embodiment 1~7 is as follows:

[0038] (1) The polyester resin is dried at 130°C for 5 hours, and the moisture is controlled at less than 0.03%. The dried polyester resin is mixed with a halogen-free flame retardant, a toughening agent, a laser marking agent, an acid absorbing agent, Antioxidants, colorants, and processing aids are mixed uniformly in a high-speed mixer in proportion or fed into the twin-screw extruder separately through a metering feeder;

[0039] (2) Send the above-mentioned mixture into the twin-screw extruder, adjust the feeding speed to 200-350rpm, add alkali-free glass fiber into the twin-screw extruder, and the screw temperature of each section of the twin-screw extruder will start from the feeding The temperature from the mouth to the machine head is 230°C in the first zone, 240°C in the second zone, 240°C in the third zone, 250°C in the fourth zone, 260°C in the fifth zone, 250°C in the sixth zone, 240...

Embodiment 1

[0042] Halogen-free flame retardant PBT with laser marking function (weight percent):

[0043] PBT resin: 48%; alkali-free glass fiber: 30%; +1-valent organic phosphoric acid and melamine polyphosphate flame retardant compound: 15%; laser marking agent: 1.5%; magnesium oxide: 0.6%; Oxygen agent and phosphite antioxidant: 0.4%; ethylene-methyl acrylate binary copolymer and ethylene-vinyl acetate copolymer binary copolymer: 3%; carbon black: 0.5%; processing aid: 1% .

Embodiment 2

[0045] Halogen-free flame retardant PBT with laser marking function (weight percent):

[0046] PBT resin: 60%, alkali-free glass fiber: 0%, + trivalent organic phosphate: 30%; laser marking agent: 3%; maleic anhydride grafted POE: 4.5%; calcium oxide: 0.5%; hindered phenols Composite antioxidant system composed of antioxidant, phosphite antioxidant and organic sulfur antioxidant: 0.3%; iron red: 0.5%, processing aid: 1.2%.

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

No PUM Login to View More

Abstract

The invention discloses halogen-free flame retardant polyester with the laser marking function and a preparation method thereof. The polyester provided by the invention comprises the following components in percentage by weight: 25-75% of polyester resin, 0-50% of alkali-free glass fiber, 10-35% of halogen-free flame retardant agent, 0.3-5% of laser marking agent, 0-20% of toughening agent, 0.5-1% of acid absorbing agent, 0.3-0.5% of oxidation resisting agent, 0.5-5% of coloring agent and 0.5-5% of processing aid. The invention also provides a preparation method of the halogen-free flame retardant polyester with the laser marking function, which comprises the following steps of: after uniformly mixing all the components according to the ratio, delivering the mixture into a double-screw extruder, and carrying out melting, mixing, extruding, strip stretching, cooling, drying and granulating the mixture through the extruder to obtain granules. The polyester provided by the invention has excellent electrical properties and mechanical properties, various colors and good laser marking effect. The preparation method provided by invention is simple and is applicable to continuous large-scale production.

Description

technical field [0001] The invention belongs to the field of polymer processing, and in particular relates to a halogen-free flame-retardant polyester with a marking function and a preparation method thereof. Background technique [0002] Thermoplastic polyesters are widely used in electronic appliances, automobiles and other industries due to their excellent electrical properties. In order to meet the flame retardant performance requirements of the industry, halogen flame retardants and antimony compounds are often added to traditional flame retardant polyesters, but the results It will reduce the electrical properties of the material (such as the tracking index (CTI) drops from 600V to 225V or even lower) and produce high smoke density and toxic corrosive gases during combustion, causing secondary hazards; based on environmental safety considerations , the European Union has issued the RoHs directive, which has made clear restrictions on the application of halogens. The ...

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 Patents(China)
IPC IPC(8): C08L67/02C08K13/06C08K7/14C08K3/22C08K5/3492C08K3/04C08K3/24B29C47/92B29C48/92
CPCB29C48/04B29C48/92
Inventor 朱文付学俊陈伟殷年伟郑一泉陈大华
Owner KINGFA SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com