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Novel flame-retardant heat-insulation elastic polyester material and preparing method and application thereof

A technology of elastic polyester and flame-retardant polyester, which is applied in the field of polyester materials, can solve the problems of toxic smoke, flammability, and secondary damage to the human body, and achieve the effects of environmental protection, safe use, and firm bonding

Active Publication Date: 2015-11-25
HIGHTEX CO LTD ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a very obvious defect in soft polyurethane - it is extremely flammable, and a large amount of toxic smoke will be produced during the burning process, which can easily cause people to suffocate and die
In the prior art, the flame retardant properties of polyurethane are generally changed by adding flame retardants, such as adding a large amount of solid flame retardants, although a certain flame retardant effect can be achieved, but the mechanical properties will be severely reduced; Good heat resistance, but more smoke, corrosive gas and toxic gas will be produced when burning, which is easy to cause secondary damage to the human body; chlorofluorocarbon blowing agents have a great effect on the destruction of the ozone layer
At present, it is difficult to modify the flame retardant of polyurethane, and it cannot fundamentally solve the problem of flame retardant of polyurethane

Method used

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  • Novel flame-retardant heat-insulation elastic polyester material and preparing method and application thereof
  • Novel flame-retardant heat-insulation elastic polyester material and preparing method and application thereof

Examples

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preparation example Construction

[0021] A preparation method of a novel flame-retardant and heat-insulating elastic polyester material, comprising the steps of:

[0022] Step 1. Phosphorus-based copolymerized permanent flame-retardant polyester chips with a phosphorus content of 7500-8500ppm, an intrinsic viscosity of 0.65-0.80dl / g, a melting point ≥ 240°C, diethylene glycol ≤ 3%, and a terminal carboxyl group ≤ 30mol / t Put it into the vacuum drum drying equipment, slowly heat up to 110-145°C under vacuum conditions, carry out pre-crystallization for 2-6 hours, then transfer to the packed drying tower, heat up to 140-165°C for 3-8 hours, and reach water Part content ≤ 30ppm; spinning temperature is 255 ~ 282 ℃, melted by screw extruder, statically mixed, filtered, enter the box metering pump for metering, extrude through "C" type hollow spinneret, and the temperature is 15 ~25℃, the speed is 1.5~4.5m / s asymmetrical ring blowing strong wind quenching to produce as-spun silk; after balancing and bunching the as...

Embodiment 1

[0028] 1. Put phosphorus-based copolymerized permanent flame-retardant polyester chips (phosphorus content is 8500ppm) into vacuum drum drying equipment, slowly heat up to 110°C under vacuum conditions, perform pre-crystallization for 2 hours, and then transfer to filling drying In the tower, the temperature is raised to 140°C and dried for 3 hours to reach a moisture content of ≤30ppm; the spinning temperature is 255°C, and after being melted, statically mixed, and filtered by a screw extruder, it enters the metering pump of the box for metering, and passes through the "C" type hollow spray Slab extruded, quenched by an asymmetrical ring blowing strong wind at a temperature of 15°C and a speed of 1.5m / s to obtain as-spun silk; Flame-retardant three-dimensional spiral crimped hollow polyester fiber of 2-10D obtained by relaxation heat setting;

[0029] 2. Mix 85wt% of 2-10D flame-retardant three-dimensional spiral crimped hollow polyester fiber and 15wt% of low-melting point p...

Embodiment 2

[0031]Step 1. Put phosphorus-based copolymerized permanent flame-retardant polyester chips (phosphorus content of 8000ppm) into vacuum drum drying equipment, and slowly heat up to 130°C under vacuum conditions for 4 hours of pre-crystallization, and then transfer to the filling type In the drying tower, the temperature is raised to 155°C and dried for 5 hours to reach a moisture content of ≤30ppm; the spinning temperature is 265°C, and after being melted, statically mixed, and filtered by a screw extruder, it enters the box for metering by a metering pump, and passes through a "C" type hollow The spinneret is extruded, and the as-spun yarn is obtained by quenching with asymmetrical ring blowing and strong wind at a temperature of 20°C and a speed of 3m / s; Flame-retardant three-dimensional spiral crimped hollow polyester fiber of 2-10D obtained by relaxation heat setting;

[0032] Step 2. Mix 90wt% of 2-10D flame-retardant three-dimensional spiral crimped hollow polyester fiber...

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Abstract

The invention discloses a preparing method of a novel flame-retardant heat-insulation elastic polyester material. The preparing method includes the steps that phosphorus co-polymerized permanent flame-retardant polyester chips are pre-crystalized and dried, and then the water content is smaller than or equal to 30 ppm; spun filaments are obtained through spinning, and after the spun filaments are balanced and bundled, 2-10 D flame-retardant three-dimensional spiral crimped hollow polyester fibers are obtained through drafting, crimping, cutting-off and relaxation heat setting; 85-95wt% of flame-retardant three-dimensional spiral crimped hollow polyester fibers and 15-5wt% of low-melting-point polyester staple fibers are mixed evenly, treated in the mode of blowing, carding and lapping and then thermally bonded through a hot mill or a hot air dryer. The material is superior in performance and can replace polyurethane foaming plastic to be used as a furniture pad material, a vehicle seat pad material and various soft pad laminated composite materials.

Description

technical field [0001] The invention relates to the technical field of polyester materials, in particular to a novel flame-retardant and heat-insulating elastic polyester material and its preparation method and application. Background technique [0002] At present, soft polyurethane foam is mainly used as the heat insulating elastic material, which has the advantages of good resilience and good heat insulation effect. However, soft polyurethane has a very obvious defect - it is extremely flammable, and a large amount of toxic smoke will be produced during the burning process, which can easily cause people to suffocate and die. In the prior art, the flame retardant properties of polyurethane are generally changed by adding flame retardants, such as adding a large amount of solid flame retardants, although a certain flame retardant effect can be achieved, but the mechanical properties will be severely reduced; It has good heat resistance, but it will produce more smoke, corro...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/541D04H1/55D01D5/253D01F6/84
Inventor 兰其勇陆文龙何乐朱爱明蒋小云
Owner HIGHTEX CO LTD ZHEJIANG
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