Unlock instant, AI-driven research and patent intelligence for your innovation.

Processing method of flame-retardant thermoplastic polyurethane elastomer

A thermoplastic polyurethane and processing method technology, applied in the field of flame retardant materials, can solve the problems of reducing the physical and mechanical properties of polyether TPU, adding flame retardants, etc., to improve blending compatibility, reduce additives, and process formability Good results

Active Publication Date: 2018-11-09
兴邦新材料(山东)有限公司
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method of adding an additive flame retardant to polyether TPU to improve the flame retardant performance has the obvious advantages of simple operation and low cost, but in order to achieve a high flame retardant effect, it is necessary to increase the amount of flame retardant added, and The addition of a large amount of flame retardants will reduce the physical and mechanical properties of polyether TPU

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

[0034] (1) Preparation of flame retardant carrier: 50g sepiolite fibers are dispersed in 95% ethanol, and 12g zinc dimethacrylate, 0.5g initiator azobisisobutyronitrile and 0.5g chain transfer agent twelve are added Mercaptan, then heated to the reflux state and kept stirring, concentrated under reduced pressure after the reaction to recover ethanol, the concentrated residue was washed with water, dried by a freeze dryer, and then made into a coarse powder by a pulverizer to obtain a flame retardant carrier;

[0035] (2) Loading of flame retardant components: disperse the above-mentioned 50g flame retardant carrier in 75% ethanol, then add 35g nano-titanium dioxide, stir evenly, use microwave reactor to reflux and stir for 5 minutes, and then microwave reflux and stir again for 5 minutes after an interval of 5 minutes. Repeat this, the total time of microwave treatment is 30min, stop the microwave treatment after the loading is completed, and concentrate under reduced pressure ...

Embodiment 2

[0040] (1) Preparation of flame retardant carrier: 50g sepiolite fibers are dispersed in 95% ethanol, and 15g zinc dimethacrylate, 0.5g initiator azobisisobutyronitrile and 0.5g chain transfer agent twelve are added Mercaptan, then heated to the reflux state and kept stirring, concentrated under reduced pressure after the reaction to recover ethanol, the concentrated residue was washed with water, dried by a freeze dryer, and then made into a coarse powder by a pulverizer to obtain a flame retardant carrier;

[0041] (2) Loading of flame retardant components: disperse the above-mentioned 50g flame retardant carrier in 75% ethanol, then add 35g nano-titanium dioxide, stir evenly, use microwave reactor to reflux and stir for 5 minutes, and then microwave reflux and stir again for 5 minutes after an interval of 5 minutes. Repeat this, the total time of microwave treatment is 30min, stop the microwave treatment after the loading is completed, and concentrate under reduced pressure ...

Embodiment 3

[0046] (1) Pretreatment of sepiolite fibers: Disperse 50g of sepiolite fibers in water, heat to 55°C and keep stirring for 0.5h, then add 2.5g of hydrolyzed polymaleic anhydride, continue to keep stirring at 55°C for 2h, filter , the filter residue is washed with water and sent to a freeze dryer, and the solid obtained by drying is made into a coarse powder by a pulverizer;

[0047] (2) Preparation of flame retardant carrier: 50 g of pretreated sepiolite fibers are dispersed in 95% ethanol, and 15 g of zinc dimethacrylate, 0.5 g of initiator azobisisobutyronitrile and 0.5 g of Chain transfer agent dodecanethiol, heat it to the reflux state and keep stirring, after the reaction, concentrate under reduced pressure to recover ethanol, wash the concentrated residue with water, dry it in a freeze dryer, and use a pulverizer to make a coarse powder to obtain a flame retardant carrier;

[0048] (3) Loading of flame retardant components: disperse the above 50g flame retardant carrier...

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
oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a processing method of a flame-retardant thermoplastic polyurethane elastomer, and relates to the technical field of flame-retardant materials. The method comprises the following steps: (1) preparing a flame retardant carrier; (2) loading flame retardant components; (3) preparing an additive flame retardant; (4) preparing thermoplastic polyurethane elastomer particles; (5)preparing the flame-retardant thermoplastic polyurethane elastomer. The flame-retardant thermoplastic polyurethane elastomer prepared by the method not only has excellent flame retardant performance under the condition of a low addition amount, but also is good in processing formability and excellent in physical and mechanical properties; the flame-retardant thermoplastic polyurethane elastomer solves the technical problems that although having a good flame retardant property, the conventional thermoplastic polyurethane elastomer is high in adding amount of a flame retardant and poor in physical and mechanical properties; the flame-retardant thermoplastic polyurethane elastomer can be widely applied in the fields such as cable sheathing and automobile parts.

Description

Technical field: [0001] The invention relates to the technical field of flame-retardant materials, in particular to a processing method of a flame-retardant thermoplastic polyurethane elastomer. Background technique: [0002] Thermoplastic polyurethane elastomer (TPU) has a unique soft and hard block copolymer structure, which makes TPU have high strength, high elasticity, good wear resistance, oil resistance, low temperature softness, high elongation and corrosion resistance Good performance. TPU has both the high elasticity of rubber and the ease of processing of plastics, and is easy to be widely used in shoe materials, plates, articles, films, cables, automotive parts and other fields. [0003] Polyether TPU is widely used in cable sheathing, automobile parts and other fields because of its good toughness, resilience, low temperature resistance and hydrolysis resistance. However, the oxygen index of polyether TPU is only about 18%, which is flammable. Material. Polyet...

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): C08L75/08C08L23/30C08K9/04C08K9/00C08K7/10C08K3/22C08G18/48C08G18/76C08G18/32C08F2/44C08F2/38
CPCC08F2/38C08F2/44C08F120/06C08G18/3206C08G18/4854C08G18/7671C08K2003/2241C08K2201/011C08L75/08C08L2201/02C08L23/30C08K9/08C08K9/00C08K7/10C08K3/22
Inventor 汪涛
Owner 兴邦新材料(山东)有限公司