Flame-retardant polystyrene material and preparation method thereof

A polystyrene and styrene technology, applied in the field of polystyrene modified materials, can solve the problems of increasing the weight of foam materials and affecting the lightweight, and achieve the effect of improving the flame retardant effect and reducing the weight.

Inactive Publication Date: 2020-11-24
安徽祥欣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant coating will significantly increase the weight of the foam material and affect the lightweight

Method used

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  • Flame-retardant polystyrene material and preparation method thereof
  • Flame-retardant polystyrene material and preparation method thereof
  • Flame-retardant polystyrene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: Prepare flame-retardant polystyrene material as follows:

[0034] (1) Preparation of aqueous phase solution: get 100 parts by weight of deionized water and add it to the reactor, measure 5 parts by weight of polyvinyl alcohol aqueous solution with a concentration of 4wt%, 1 part by weight of active calcium phosphate and 0.6 parts by weight of a concentration of 0.2wt% Add the sodium dodecylbenzenesulfonate aqueous solution into the reactor, heat to 50°C to fully dissolve, then add 4 parts by weight of expanded graphite powder to the reactor and mix well; the maximum particle size of the expanded graphite powder is 500nm. Due to the hydrophobicity and electrostatic repulsion of the expanded graphite powder, it will be evenly dispersed after entering the water, and will not agglomerate with each other to form larger particles, which is conducive to the uniform transfer to the oil phase in the next step.

[0035] (2) Preparation of oil phase solution: styrene...

Embodiment 2

[0044] Embodiment 2: Prepare flame-retardant polystyrene material as follows:

[0045] (1) Water phase solution preparation: get 100 parts by weight of deionized water and add in the reactor, measure 5 parts by weight of polyvinyl alcohol aqueous solution, 1 part by weight of active calcium phosphate and 0.6 parts by weight of 0.2 wt% concentration Add the sodium dodecylbenzenesulfonate aqueous solution into the reactor, heat to 50°C to fully dissolve, then add 6 parts by weight of expanded graphite powder to the reactor and mix well; the maximum particle size of the expanded graphite powder is 500 μm.

[0046] (2) Preparation of oil phase solution: styrene: triphenyl phosphate is added to the mixing container at a weight ratio of 10:1, triphenyl phosphate and benzoyl peroxide are added and stirred until completely dissolved in styrene to obtain The mixed solution is the mixed oil phase; the added amount of the benzoyl peroxide is 1.5% of the mixed solution; the added amount o...

Embodiment 3

[0055] Embodiment 3: prepare flame-retardant polystyrene material as follows:

[0056] (1) Water phase solution preparation: get 100 parts by weight of deionized water and add in the reactor, measure 5 parts by weight of polyvinyl alcohol aqueous solution, 1 part by weight of active calcium phosphate and 0.6 parts by weight of 0.2 wt% concentration Add the sodium dodecylbenzenesulfonate aqueous solution into the reaction kettle, heat to 50°C to fully dissolve, then add 5 parts by weight of expanded graphite powder to the reaction kettle and mix well; the maximum particle size of the expanded graphite powder is 250 μm.

[0057] (2) Preparation of oil phase solution: styrene: triphenyl phosphate is added to the mixing container at a weight ratio of 10:1, triphenyl phosphate and benzoyl peroxide are added and stirred until completely dissolved in styrene to obtain The mixed solution is the mixed oil phase; the added amount of the benzoyl peroxide is 1.35% of the mixed solution; t...

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Abstract

The invention discloses a flame-retardant polystyrene material and a preparation method thereof. Expanded graphite and triphenyl phosphate are matched with each other to serve as a flame retardant, the flame-retardant effect of PS (polystyrene) beads and EPS (expandable polystyrene) beads is effectively improved, in a process of producing the PS beads with a suspension polymerization method, the expanded graphite is uniformly dispersed in aqueous phase according to the hydrophobic and oleophilic characteristics of the expanded graphite, is transferred to oil phase in a polymerization reactionprocess and is uniformly distributed into the PS beads, the phenomenon of large-grain aggregation is avoided, exertion of thermal-insulation and flame-retardant properties of the expanded graphite isfacilitated, and a follow-up foaming process is not affected. Flame-retardant and thermal-insulation silicon dioxide aerogel is added to phenol-formaldehyde resin, EPS foaming grains are effectively wrapped and isolated, the flame-retardant effect is realized, meanwhile, because of quite low volume-weight of silicon dioxide, weight of a clad material can be greatly reduced while the thermal-insulation and flame-retardant effects are realized, and the advantage of lightweight of the material is effectively played.

Description

technical field [0001] The invention relates to the field of polystyrene modified materials, in particular to a flame-retardant polystyrene material and a preparation method thereof. Background technique [0002] Traditional polystyrene foamed plastics have low thermal conductivity and water absorption, light weight, and are flammable in case of fire. Burning droplets have secondary ignitability, and the oxygen index is only 18%. Flame retardant modification is mostly directly adding flame retardants during suspension polymerization production. Halogenated flame retardants have good compatibility with EPS and high efficiency, and are the most commonly used flame retardants in traditional polymerization methods. Among them, hexa-cyclododecane (HBCD) is a typical flame retardant for EPS materials. However, the flame-retardant materials made of halogen flame retardants will produce a large amount of toxic gas, corrosive gas and smoke during the combustion process, which is ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/224C08J9/228C08J9/16C08J9/14C08F112/08C08F2/20C08F2/44C08K9/00C08K3/04C08K5/523C08L25/06C08L61/06C08K7/26
CPCC08J9/224C08J9/228C08J9/16C08J9/14C08J9/0038C08J9/0066C08J9/009C08F112/08C08K9/00C08K3/04C08K5/523C08J2325/06C08J2461/06C08K7/26C08J2203/14
Inventor 彭其周赵高林
Owner 安徽祥欣新材料科技有限公司
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