A kind of transparent flame retardant and antistatic pmma composite material and preparation method thereof

A technology of flame retardant and antistatic composite materials, which is applied in the field of transparent flame retardant and antistatic PMMA composite materials and its preparation, can solve the problems of short flame retardant and antistatic cycle, high cost and poor transparency, and achieve flame retardant and antistatic Obvious effects, safe reagents, and cost-saving effects

Active Publication Date: 2021-01-29
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of high raw material cost, short flame retardant and antistatic cycle, and poor transparency of the existing flame-retardant PMMA composite materials, the present invention provides a transparent composite material that can not only make PMMA achieve permanent flame-retardant and antistatic properties but also maintain its transparency. Flame retardant and antistatic PMMA composite material

Method used

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  • A kind of transparent flame retardant and antistatic pmma composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Put 43.60g of ethylenediamine tetramethylene phosphonic acid and 0.20g of concentrated sulfuric acid in a 250mL three-necked flask equipped with a water separator and a thermometer. Add 6.51g (0.05mol) of hydroxypropyl acrylate dropwise into a three-necked flask through a funnel, make excess ethylenediamine tetramethylene phosphonic acid, and react at 80°C for 6 hours to obtain a crude product, which is purified by vacuum distillation to obtain Flame retardant antistatic agent;

[0037] (2) Mix 94.95g of methyl methacrylate (MMA) and 0.05g (0.05 parts) of azobisisoheptanonitrile (ABVN) and 5.00g of flame retardant antistatic agent in a 250mL flask; place the flask in Prepolymerize in an oil bath at 80°C. After 10 seconds after a large number of bubbles emerge in the flask, the prepolymerization ends. Take out the flask and put it in an ice-water bath until the wall of the flask becomes cold;

[0038](3) Inject the pre-polymerization solution into a steel plate cont...

Embodiment 2

[0040] The difference between Example 2 and Example 1 lies in that the addition amount of the flame retardant antistatic agent in step (2) is 7.00 g, and the rest of the process is exactly the same as that of Example 1.

Embodiment 3

[0042] The difference between embodiment 3 and embodiment 1 is that the addition amount of the flame retardant antistatic agent in step (2) is 10.00 g, and the rest of the process is exactly the same as that of embodiment 1.

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Abstract

The invention relates to the technical field of polymer materials, in particular to a transparent flame-retardant and antistatic PMMA composite material and a preparation method thereof, which, in parts by weight, comprise the following components: 70.00-99.00 parts of methyl methacrylate; 0.03-99.00 parts of an initiator; 0.20 part; 1.00-30.00 parts of flame retardant and antistatic agent; the flame retardant and antistatic agent is prepared by esterification of a first monomer, a dehydration catalyst and a second monomer, and the first monomer contains a plurality of A monomer of a phosphonic acid or phosphinic acid group; the second monomer is a monomer having both a hydroxyl group and a double bond. The invention synthesizes a composite material which can not only achieve flame retardant effect but also antistatic effect of PMMA. Its flame retardant grade reaches UL‑94V‑0 level and its surface resistance reaches 10 12 Ω or less, the flame retardant and antistatic effect is obvious, and it has permanent flame retardant and antistatic properties without affecting the transparency of PMMA.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a transparent flame-retardant and antistatic PMMA composite material and a preparation method thereof. Background technique [0002] Polymethyl methacrylate (PMMA), also known as acrylic or plexiglass, is a transparent polymer material polymerized from methyl methacrylate (MMA) monomer. Due to its good optical transparency, it is widely Lighting components used in aviation, construction, agriculture and other fields. However, the thermal stability of PMMA is very poor, and it is extremely flammable, which greatly limits its application in more fields. Usually, the limiting oxygen index of pure PMMA is only 17, and in the cone calorimetry test, the heat release rate peak value ( PHRR) up to 1058KW / m 2 , is an extremely flammable material, not only that, PMMA is also a typical linear polymer material, and its combustion process is often accompanied by severe dripping, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F230/02
CPCC08F220/14C08F230/02
Inventor 陈思王旭吴丹丹马猛施燕琴袁凯云徐汝清周波
Owner ZHEJIANG UNIV OF TECH
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