Flame-retardant smoke-inhibition light-weight high-strength high-molecular material, and preparation method thereof

A polymer material and lightweight technology, applied in the field of lightweight materials, can solve problems such as the lack of research on the flame retardancy of gel emulsion systems, the impact on the environment and human health, and the immature foaming process. Temperature, water absorption is small, and the effect of improving mechanical properties

Active Publication Date: 2019-10-15
SHAANXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the foaming process of high-performance foam materials at home and abroad is not mature enough. Most of the high-performance lightweight materials in China mainly rely on imports from developed countries, and the price is extremely expensive.
[0003]Based on the preparation process of the above-mentioned lightweight materials, the research group of the present invention has developed a method for preparing lightweight high-strength polymer materials by using the soft template method (Polymerizable Nonconventional Gel Emulsions and Their Utilization in the Template Preparation of Low-Density, High-Strength Polymeric Monoliths and 3D Printing. Macromolecules, 2019, 52, 2456-2463.), hereinafter referred to as comparative literature, although this method can prepare light High-strength polystyrene, but this lightweight high-strength polystyrene material is a flammable material. When it burns, it has a strong flame, a large amount of smoke exhaust, and a large dripping area, which seriously affects the environment and human health. Therefore, it is used in many fields. severely restricted
[0004] At present, there are many researches on the flame retardancy of resin matrix, but there are very few researches on the flame retardancy of gel emulsion system
Due to the unique microstructure of the gel emulsion system and the existence of two phases, special attention should be paid to the stability and dispersibility of the gel emulsion system when selecting a flame retardant and smoke suppressant. Therefore, the flame retardant used in the existing resin matrix Can not be directly applied to gel emulsion system

Method used

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  • Flame-retardant smoke-inhibition light-weight high-strength high-molecular material, and preparation method thereof
  • Flame-retardant smoke-inhibition light-weight high-strength high-molecular material, and preparation method thereof
  • Flame-retardant smoke-inhibition light-weight high-strength high-molecular material, and preparation method thereof

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preparation example Construction

[0043] The preparation method of the flame-retardant and smoke-suppressing lightweight high-strength polymer material of the present invention comprises:

[0044] 1. Preparation of soft template

[0045] Under normal temperature and pressure, add a certain amount of gelling agent, oil phase reactive monomer, oil phase crosslinking agent, initiator and composite flame retardant and smoke suppressant into a suitable container, stir and shake evenly, and then add the dispersed phase for emulsification , forming a uniform, fine, inverted gel emulsion that does not flow.

[0046] 2 Polymerization of soft templates

[0047] The gel emulsion in step 1 is thermally initiated and polymerized in a water bath. The polymerization process is as follows: after reacting at 30-90°C for 4-12 hours, it is dried in a constant temperature oven to obtain a flame-retardant and smoke-suppressing light-weight high-strength polymer material.

Embodiment 1

[0049] 3.7 mg dicholesterol derivatives, 550 μL styrene, 165 μL hexanediol diacrylate, 27.5 μL tripropenyl isocyanurate, 7.43 mg azobisisobutyronitrile, 148.5 mg triphenyl phosphate, 14.9 mg hydrogen Magnesium oxide and 59.4 mg of calcium phosphomolybdate were added to the test tube, shaken evenly on the shaker, and 5470 μL of water was added to shake on the vortex shaker to form a uniform milky white gel emulsion that was inverted and stagnant, and the test tube containing the gel emulsion Seal the mouth, react in a water bath at 90°C for 4 hours, and dry in a constant temperature oven at 100°C for 24 hours to obtain a density of 0.15±0.01g / cm 3 Lightweight high-strength flame-retardant polystyrene.

Embodiment 2

[0051] Add 242 mg of titanium dioxide micro-nanoparticles, 550 μL of styrene, 55 μL of pentaerythritol tetraacrylate, 30.25 mg of azobisisobutyronitrile, 60.5 mg of triphenyl phosphate, 60.5 mg of aluminum hydroxide and 12.1 mg of zinc borate into the test tube, and place on a shaker Shake evenly, add 5554 μ L of calcium chloride aqueous solution with a mass concentration of 2%, and shake on a vortex shaker to form a uniform, inverted and non-flowing milky white gel emulsion system, and seal the test tube mouth with the gel emulsion system. React in a water bath at 90°C for 12 hours, dry in a constant temperature oven at 100°C for 24 hours to obtain a density of 0.15±0.01g / cm 3 Lightweight high-strength flame-retardant polystyrene.

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Abstract

The invention provides a flame-retardant smoke-inhibition light-weight high-strength high-molecular material, and a preparation method thereof. The flame-retardant smoke-inhibition light-weight high-strength high-molecular material comprises following steps: 1, a gelatinizing agent, an oil phase reaction monomer, an oil phase crosslinking agent, an initiator, and a composite flame-retardant smoke-inhibition agent are mixed, and are stirred to be uniform, a dispersion phase is added for emulsification so as to form a uniform fine gel emulsion which is stagnant in upside down position; the gel emulsion is subjected to thermal induced polymerization reaction, and after reaction drying is carried out so as to obtain the flame-retardant smoke-inhibition light-weight high-strength high-molecularmaterial. The flame resistance of the flame-retardant smoke-inhibition light-weight high-strength high-molecular material is capable of reaching V-0 grade or higher only with slightly reduced mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of light materials, and mainly relates to a flame-retardant and smoke-suppressing light-weight high-strength polymer material prepared by a soft template method and a preparation method thereof. Background technique [0002] With the development and demand of science and technology, "energy saving, light weight and environmental protection" has become an important goal of the development of new materials today, and there are more and more requirements for light weight and high strength materials in many application fields. At present, the most common methods of preparing lightweight materials include physical and chemical foaming methods and lightweight filler filling methods. Lightweight materials with excellent comprehensive performance on the market include PMI foam, PVC foam, PET foam and solid buoyancy materials. High-performance foam materials are mainly used in sandwich materials in aerospace, wind po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/14C08F226/06C08F2/44C08K5/523C08K3/22C08K3/32C08K13/02
CPCC08F212/08C08F2/44C08K5/523C08K3/22C08K3/32C08K13/02C08K3/2279C08K2003/2224C08K2201/011C08K2003/2241C08K2003/2227
Inventor 房喻何怡楠王佩刘姣姣
Owner SHAANXI NORMAL UNIV
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