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Flame-retardant vegetable fiber paper honeycomb core and preparation method thereof

A plant fiber paper, plant fiber technology, applied in the directions of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, paper, etc., can solve the problem of high raw material cost and preparation cost, and achieve the expansion of application scale and low development. Carbon and environmental protection society, the effect of improving cost performance

Inactive Publication Date: 2012-07-18
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aramid fiber paper is mainly prepared from meta-Nomex fiber and para-position Kelver fiber, which mainly has the problem of high raw material cost and high production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Choose a commercial surface density of 40g / m 2 For all plant fiber wood pulp paper, a blank plant fiber honeycomb core with a cell side length of 1.83mm was prepared according to the traditional process.

[0029] According to the "flame retardant-dipping" two-step process to prepare high-performance flame retardant plant fiber honeycomb core, the preparation process is as follows:

[0030] (1) Flame retardant treatment is to immerse the blank plant fiber paper honeycomb core in the aqueous solution of flame retardant, soak for 5 minutes, then take it out from the solution, pat dry the aqueous solution on the surface of the honeycomb core, and then dry it in a blast oven Dry the honeycomb core, the drying temperature is 40° C., and the residence time is 10 hours to obtain a flame-retardant plant fiber honeycomb core. The flame retardant is a ZR-PZM type intumescent flame retardant (Qingzhou Chemical Plant, Shandong Province), and the mass percentage of the flame retarda...

Embodiment 2

[0034] Select the commercial surface density as 100g / m 2 The whole plant fiber hemp pulp paper is prepared with a corrugated blank plant fiber honeycomb core according to the traditional process.

[0035] According to the "dipping-flame retardant" two-step process to prepare high-performance flame-retardant plant fiber honeycomb core, the preparation process is as follows:

[0036] (1) Dipping treatment is to immerse the blank plant fiber paper honeycomb core in a solution of flame-retardant thermosetting resin, soak for 5 minutes, then take it out of the solution, pat dry the solution on the surface of the honeycomb core, and then cure it in a blast oven For the honeycomb core, the curing process is to raise the temperature to 70°C, and the residence time is 2 hours, and then raise the temperature to 160°C, and the residence time is 0.5 hours. The flame-retardant thermosetting resin is a commercial medium-temperature curing flame-retardant phenolic resin, the solvent is indust...

Embodiment 3

[0040] Prepare hybrid plant fiber paper with reference to the papermaking process. The raw materials are wood pulp with a mass content of 50% and polylactic acid fibers with a mass content of 50%. The surface density of the hybrid plant fiber paper is 50g / m 2 , and then prepare a blank plant fiber honeycomb core with a cell side length of 2.75mm according to the traditional process.

[0041] The high-performance flame-retardant plant fiber honeycomb core is prepared according to the three-step process of "setting-flame-retardant-dipping", and the preparation process is as follows:

[0042] (1) The setting treatment is to immerse the blank plant fiber paper honeycomb core in the solution of flame retardant thermosetting resin, soak for 20 minutes, then take it out from the solution, pat dry the solution on the surface of the honeycomb core, and then solidify it in a blast oven For the honeycomb core, the curing process is to raise the temperature to 90°C, and the residence time...

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Abstract

The invention belongs to the technical field of composite material preparation and relates to a flame-retardant vegetable fiber paper honeycomb core and a preparation method thereof. The preparation method is used for preparing a composite material with a sandwich structure and comprises the following steps of: firstly preparing a blank paper honeycomb core by using vegetable fiber paper or hybrid vegetable fiber paper according to the traditional technology, and then preparing the flame-retardant vegetable fiber or hybrid vegetable fiber paper honeycomb core with high performance by adopting a 'flame retarding and gum dipping' or 'gum dipping and flame retarding' two-step method technology or a 'sizing, flame retarding and gum dipping' three-step method technology. Compared with the traditional kraft paper honeycomb core and the Nomex honeycomb core, the flame-retardant vegetable fiber paper honeycomb core has the advantages that the cost performance of the honeycomb core is increased, and the application of the honeycomb sandwich structure in the transportation field such as airplanes, rail transits and automobiles is widened, and the application scale of biomass vegetable fibers is expanded, and the low carbon environmentally-friendly society is developed.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a flame-retardant plant fiber paper honeycomb core and a preparation method thereof, which are used for preparing sandwich structure composite materials. Background technique [0002] The kraft paper honeycomb core is made of kraft paper without flame retardant and dipping treatment. The compressive strength of the honeycomb core is not high, and its water resistance and flame resistance are poor. However, due to its high cost performance advantage, it is mainly used for mechanical performance requirements. Not high packing area. Aluminum honeycomb core is made of thin aluminum foil. The price of raw materials is lower than that of Nomex paper, and the preparation process is relatively simple, so the price of honeycomb core is relatively low. However, due to the high density of metal aluminum, it is mainly used in the construction field that is not sensitive ...

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): B31D3/00D21H13/00D21H21/34D21H17/36
Inventor 益小苏刘燕峰仝建峰包建文刘青曼何先成陈旭
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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