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Preparation method for natural fiber reinforced phenolic resin composite material with DOPO modified flame retardation performance

A natural fiber and phenolic resin technology, applied in the field of materials, can solve the problems of poor mechanical properties of polymers, achieve the effects of improving the flame retardancy of materials, mild process conditions, and simple and effective preparation methods

Inactive Publication Date: 2013-05-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the addition of the flame retardant DOPO to the polymer can improve its flame retardant performance, it will also deteriorate the mechanical properties of the polymer to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 80g DOPO to 420g alcohol solvent to prepare a solution with a mass fraction of DOPO of 16%;

[0029] (2) Bake 182g of ramie fiber plain weave fabric at 120°C for 4 hours and then seal it for storage.

[0030] (3) Soak the ramie fiber plain fabric obtained in step (2) in the DOPO solution prepared in step (1) for flame retardant treatment, and take out the ramie fiber after 24 hours;

[0031] (4) drying the flame retardant treated ramie fiber fabric obtained in step (3) at 60°C for 24 hours;

[0032] (5) uniformly compound the ramie fiber fabric obtained in step (4) with 150g of phenolic resin to prepare a prepreg;

[0033] (6) Put the prepreg prepared in step (5) into a mold for hot-press molding to prepare a flame-retardant modified ramie fiber-reinforced phenolic resin composite material. Among them, the process parameters of hot pressing are: pre-pressing temperature range is 90°C~120°C, pre-pressing pressure is 0.8MPa, curing molding temperature is 140°C, ...

Embodiment 2

[0036] (1) Add 150g DOPO to 475g alcohol solvent to prepare a solution with a mass fraction of DOPO of 24%;

[0037] (2) Bake 176g of ramie fiber satin weave fabric at 120°C for 2 hours and then seal it for storage.

[0038] (3) Soak the ramie fiber satin fabric obtained in step (2) in the DOPO solution prepared in step (1) for flame retardant treatment, and take out the ramie fiber after 24 hours;

[0039] (4) drying the flame retardant treated ramie fiber fabric obtained in step (3) at 80°C for 24 hours;

[0040] (5) uniformly compound the ramie fiber fabric obtained in step (4) with 150g of phenolic resin to prepare a prepreg;

[0041] (6) Put the prepreg prepared in step (5) into a mold for hot-press molding to prepare a flame-retardant modified ramie fiber-reinforced phenolic resin composite material. Among them, the process parameters of hot pressing are: pre-pressing temperature range is 90°C~120°C, pre-pressing pressure is 0.8MPa, curing molding temperature is 140°C,...

Embodiment 3

[0044] (1) Add 95g DOPO to 498.8g alcohol solvent to prepare a solution with a mass fraction of DOPO of 16%;

[0045] (2) Bake 215g of jute fiber plain weave fabric at 120°C for 4 hours and then seal it for storage.

[0046] (3) Soak the jute fiber obtained in step (2) in the DOPO solution prepared in step (1) for flame retardant treatment, and take out the jute fiber after 20 hours;

[0047] (4) drying the jute fiber fabric after the flame retardant treatment obtained in step (3) at 50° C. for 24 hours;

[0048] (5) uniformly compound the jute fiber fabric obtained in step (4) with 180g phenolic resin to prepare a prepreg;

[0049] (6) Put the prepreg prepared in step (5) into a mold for hot-press molding to prepare a flame-retardant modified jute fiber-reinforced phenolic resin composite. Among them, the process parameters of hot pressing are: pre-pressing temperature range is 90°C~120°C, pre-pressing pressure is 0.8MPa, curing molding temperature is 140°C, curing molding pr...

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Abstract

The invention specifically relates to a preparation method for natural fiber reinforced phenolic resin composite material with DOPO modified flame retardation performance, which belongs to the technical field of materials. The method comprises the following steps: carrying out flame retardant treatment on natural fibers by using the phosphorus flame retardant of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and compounding the natural fibers with a phenolic resin so as to prepare the natural fiber reinforced phenolic resin composite material with flame retardation performance. Thenatural fiber / phenolic resin composite material which undergoes flame retardant modification under the action of the fire retardant DOPO has improved flame retardation performance and maintains good mechanical properties. The preparation method for the natural fiber reinforced phenolic resin composite material with DOPO modified flame retardation performance has the advantages of simpleness, efficiency, mild process conditions and suitability for industrial production.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a natural fiber reinforced phenolic modified by the flame retardant of phosphorus-based flame retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) Preparation method of resin composite material. Background technique [0002] The energy crisis and the increasingly serious environmental pollution have aroused people's attention to eco-friendly materials. Compared with traditional synthetic fibers (such as carbon fiber, glass fiber, aramid fiber, etc.), natural fibers are cheap and rich in sources, and do not need to consume a lot of energy in the production process (while carbon fibers need to be carbonized at high temperatures, glass fibers need to be in High temperature drawn wire), and natural fibers have high specific modulus, specific strength and ecological environmental protection. In recent years, natural fiber reinforced composite materials h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/10C08L1/02C08K5/5313B29C43/58
Inventor 李岩马豪于涛罗业
Owner TONGJI UNIV
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