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Synergistic flame retardant containing vegetable oil-based nitrogen and phosphorus, preparation method and application thereof

A vegetable oil and synergistic flame retardant technology, which is applied in the field of polymer materials, can solve the problems such as the decline of the flame retardant performance of phenolic foam materials, and achieve the effects of good flame retardancy, broadening applications and saving resources.

Active Publication Date: 2020-12-04
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The toughener used in PF foam reduces the flame retardancy of phenolic foam due to the existence of flexible links

Method used

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  • Synergistic flame retardant containing vegetable oil-based nitrogen and phosphorus, preparation method and application thereof
  • Synergistic flame retardant containing vegetable oil-based nitrogen and phosphorus, preparation method and application thereof
  • Synergistic flame retardant containing vegetable oil-based nitrogen and phosphorus, preparation method and application thereof

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preparation example Construction

[0020] The invention provides a method for preparing phenolic resin and foam containing vegetable oil-based nitrogen-phosphorus synergistic flame retardant with simple preparation process, low cost and environmental protection. A preparation method of phenolic resin and foam containing vegetable oil-based nitrogen and phosphorus synergistic flame retardant. Vegetable fats and oils are ammonolyzed with metered amine compounds at a certain temperature for a period of time under an alkaline catalyst, and then washed with water, liquid separated, and vacuum distilled to remove small molecular substances to obtain nitrogen-containing compounds. The substance is uniformly mixed with a phosphorus-containing compound, and reacted at 25-100 DEG C for 0.5-12 hours to obtain a vegetable oil-based nitrogen-phosphorus synergistic flame retardant. The material is blended uniformly with curing agent, foaming agent, surfactant and other auxiliary agents, introduced into the mold, and cured at...

Embodiment 1

[0032] Preparation of vegetable oil-based nitrogen and phosphorus synergistic flame retardant

[0033] A certain amount of tung oil, ethylenediamine and NaOH (5% of tung oil quality) are added in the reactor, and the molar ratio of each component is n 腰果酚 :n 乙二胺 =1:3.2, nitrogen gas flow, reaction temperature 100°C, reaction time 2h, and then wash with water, liquid separation, vacuum distillation to remove small molecular substances, to obtain the nitrogen-containing compound shown in the following formula 1. Add 100 g of the nitrogen-containing compound obtained above, 150.8 g of diethyl triazine cyclic phosphate and 200 mL of absolute ethanol into the reactor, and react at room temperature for 24 h. After the reaction, the by-products of excessive amination were removed by suction filtration. The filtrate was distilled under reduced pressure, and a mixed solution of n-hexane and anhydrous ether with a volume ratio of 1:3 was added to the remaining viscous liquid, and the ...

Embodiment 2

[0038] Preparation of vegetable oil-based nitrogen and phosphorus synergistic flame retardant

[0039] Add a certain amount of soybean oil, propylenediamine and KOH (3% of cardanol quality) into the reactor, and the molar ratio of each component is n 大豆油 :n 丙二胺 =1:3, nitrogen flow, reaction temperature 90°C, reaction time 4h, then wash with water, liquid separation, vacuum distillation to remove small molecular substances, to obtain the nitrogen-containing compound shown in the following formula 1. Add 100 g of the nitrogen-containing compound obtained above, 61.6 g of dimethyl triazine cyclic phosphate and 300 mL of absolute ethanol into the reactor, and react at room temperature for 24 h. After the reaction, the by-products of excessive amination were removed by suction filtration. The filtrate was distilled under reduced pressure, and a mixed solution of n-hexane and anhydrous ether with a volume ratio of 1:3 was added to the remaining viscous liquid, and the solid was pr...

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Abstract

The invention discloses a vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant and a preparation method and application thereof. The preparation method comprises the following steps: through modifying a biomass, acquiring a series of the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardants, and phenolic resin for synthesizing the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant, finally uniformly blending with other assistants of a curing agent, a foaming agent, a surfactant and the like, pouring into a mould, curing in a certain temperature, to obtain foam. The phenolic foam of the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant has more excellent flame resistance and mechanical property compared with current pure phenolic foam, and because the fire retardant uses tung oil from a biomass source as a raw material at the same time, the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant has the double effects of saving resources and protecting environment.

Description

technical field [0001] The invention uses natural renewable biomass vegetable oil to synthesize a vegetable oil-based nitrogen-phosphorus synergistic flame retardant, which is used to prepare phenolic resin and foam, and belongs to the technical field of polymer materials. Background technique [0002] Phenolic resin (PF) foam is widely used in building insulation materials, petrochemicals, transportation, plant cultivation and aerospace due to its low price, heat resistance, low thermal conductivity, ablation resistance, excellent flame retardancy, and less combustion smoke. It is one of the fastest-growing bubbles in recent years. However, due to its own molecular structure, PF has defects such as poor toughness and high crushing rate, which seriously limit its further application. Therefore, it is necessary to toughen the PF foam to overcome these shortcomings. The toughener used in PF foam reduces the flame retardancy of phenolic foam due to the existence of flexible j...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/5317C08K5/524C08L61/06C08J9/14C08G8/10
CPCC08G8/10C08J9/141C08J2203/14C08J2361/06C08K5/524C08K5/5317C08L61/06
Inventor 周永红宋飞张猛胡立红贾普友薄采颖
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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