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Method for preparing highly flame-retardant nonwoven fabric

A non-woven, high flame retardant technology, applied in the field of preparation of high flame retardant non-woven fabrics, can solve the problems that the non-woven fabric cannot widely meet the requirements, the mechanical properties and air permeability of the non-woven fabric are lacking, etc. Easy operation and control, material saving effect

Active Publication Date: 2020-02-04
义乌市鸿晟无纺布有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-woven fabric is mainly prepared by blending flame-retardant viscose fibers with other fibers, so that the non-woven fabric has flame-retardant properties, but the non-woven fabric is still lacking in mechanical properties and air permeability, and cannot Wide range of requirements

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
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  • Method for preparing highly flame-retardant nonwoven fabric
  • Method for preparing highly flame-retardant nonwoven fabric
  • Method for preparing highly flame-retardant nonwoven fabric

Examples

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preparation example Construction

[0044] A method for preparing a highly flame-retardant nonwoven fabric, comprising the steps of:

[0045] The first step, polypropylene raw material processing: rinse the polypropylene with deionized water, send it to the hopper type hot air dryer for convection drying, the drying temperature is 140-145 ° C, and the drying time is 1-3 hours;

[0046] The second step, mixing: according to the following parts by weight: 70-80 parts of polypropylene, 10-13 parts of maleic anhydride grafted polypropylene, 1.3-2.1 parts of degradation agent, 14.5-16.5 parts of plant fiber, 0.2-0.3 parts of antioxidant parts, 0.1-0.2 parts of coupling agent, and 0.1-0.2 parts of processing aids Weigh each raw material, send it into a screw extruder, and carry out melt mixing;

[0047] The temperature control of the 1-6 zones of the screw extruder is as follows: Zone 1: 135-150°C; Zone 2: 160-190°C; Zone 3: 195-210°C; Zone 4: 210-220°C; Zone 5: 220- 225°C; Zone 6: 220-225°C;

[0048] The polypropyl...

Embodiment 1

[0070] A method for preparing a highly flame-retardant nonwoven fabric, comprising the steps of:

[0071] The first step, polypropylene raw material processing: rinse the polypropylene with deionized water, and send it to a hopper-type hot air dryer for convective drying. The drying temperature is 140°C and the drying time is 3 hours;

[0072] The second step, mixing: according to the following parts by weight: 70 parts of polypropylene, 10-13 parts of maleic anhydride grafted polypropylene, 1.3 parts of degradation agent, 14.5 parts of plant fiber, 0.2 part of antioxidant, 0.1 part of coupling agent, 0.1 part of processing aid Weigh each raw material, send it into a screw extruder, and carry out melt mixing;

[0073] The third step is to form a web: the melt enters the melt-blown die, extrudes through the spinneret hole on the die, and then is drawn by a hot air flow, the fiber is cooled and solidified, deposited on the receiving device, and rolled into a web. That is, non-w...

Embodiment 2

[0080] A method for preparing a highly flame-retardant nonwoven fabric, comprising the steps of:

[0081] The first step, polypropylene raw material processing: rinse the polypropylene with deionized water, and send it to a hopper-type hot air dryer for convection drying. The drying temperature is 143°C and the drying time is 2 hours;

[0082] The second step, mixing: according to the following parts by weight: 75 parts of polypropylene, 11.5 parts of maleic anhydride grafted polypropylene, 1.8 parts of degradation agent, 15.5 parts of plant fiber, 0.25 part of antioxidant, 0.15 part of coupling agent, processing aid 0.15 part of agent weighs each raw material, sends into screw extruder, melts and mixes;

[0083] The third step is to form a web: the melt enters the melt-blown die, extrudes through the spinneret hole on the die, and then is drawn by a hot air flow, the fiber is cooled and solidified, deposited on the receiving device, and rolled into a web. That is, non-woven ...

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Abstract

The invention discloses a method for preparing a highly flame-retardant nonwoven fabric, which comprises the steps of firstly, processing polypropylene material; secondly, mixing the material; thirdly, carrying out laying; fourthly, uniformly mixing a nitrogen-phosphorus flame retardant, organic montmorillonite, a penetrant and water according to a weight ratio to prepare a flame-retardant finishing solution; fifthly, carrying out flame-retardant finishing on the nonwoven fabric by a finishing processing device; and sixthly, drying to obtain the highly flame-retardant nonwoven fabric. Polypropylene, maleic anhydride grafted polypropylene and plant fibers are adopted as base materials to the nonwoven fabric, and isotactic polypropylene and maleic anhydride grafted polypropylene can improvethe physical and mechanical properties of the nonwoven fabric; Through the addition of a degradation agent and the plant fibers, the nonwoven fabric has good degradation performance and meets the requirements of modern environmental protection; In addition, the flame-retardant finishing is performed with the special finishing processing device, so that the nonwoven fabric is fully soaked with thefinishing solution, the finishing effect is improved, and the flame-retardant performance of the nonwoven fabric is further improved.

Description

technical field [0001] The invention belongs to the technical field of non-woven fabric production, and in particular relates to a method for preparing a highly flame-resistant non-woven fabric. Background technique [0002] Non-woven products are rich in color, bright and bright, fashionable and environmentally friendly, widely used, beautiful and generous, with various patterns and styles, and are light in weight, environmentally friendly, and recyclable. They are recognized as environmentally friendly products that protect the earth's ecology. Non-woven fabric is a kind of non-woven fabric formed by directly using polymer chips, short fibers or filaments to form fibers through airflow or mechanically, and then undergo spunlace, needle punching, or hot rolling reinforcement, and finally finish finishing. . Compared with traditional textile fabrics, it has the characteristics of short process flow, fast production speed, high output, low cost and wide application. It is w...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/007D04H3/02D04H3/013D06B3/20D06B15/02D06B3/34D06B23/20D06B23/02D01F8/06D01F8/10D01F8/02D01F1/10D06M11/79D06M101/20
CPCD01F1/10D01F8/02D01F8/06D01F8/10D04H3/007D04H3/013D04H3/02D06B3/201D06B3/34D06B15/02D06B23/021D06B23/20D06M11/79D06M2101/20D06M2200/30
Inventor 江四胜江川
Owner 义乌市鸿晟无纺布有限公司
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