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Polymer foam material and its preparation method

A technology for foaming materials and polymers, applied in the field of polymer foaming materials and its preparation, can solve problems such as affecting foaming, seriousness, and leakage of flame retardants, to reduce the difference in viscoelasticity, and the preparation method is simple and good scattered effect

Active Publication Date: 2021-12-21
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, firstly, these flame retardants usually need to be added in a large amount to play a role, and too much addition of these flame retardants will seriously affect the foaming; secondly, the compatibility of these flame retardants with polymers Not good, it is easy to seep out from the polymer material, and the existence of the cell structure makes the seep out of the flame retardant more serious
Therefore, the traditional flame retardant modification methods are not suitable for foamed materials

Method used

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  • Polymer foam material and its preparation method
  • Polymer foam material and its preparation method
  • Polymer foam material and its preparation method

Examples

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preparation example Construction

[0029] In the preparation method of the polymer foaming material provided by the present invention, a macromolecular flame retardant is firstly obtained through graft modification, and after blending with the second polymer, not only will it not be as difficult as adding a large amount of small molecule flame retardants or difficult The foaming performance of the second polymer is also seriously affected by the burning filler, and it can be co-foamed with the second polymer to improve the cell structure, so as to obtain a polymer foam with excellent properties such as flame retardancy, heat preservation, sound insulation, and cushioning Material.

[0030] The preparation method of polymer foam material provided by the invention comprises:

[0031] S1, providing a first polymer, mixing the first polymer with a peroxidant and a first solvent, and reacting at a first temperature to obtain a first intermediate product, wherein the main chain of the first polymer contains two key;...

Embodiment 1

[0064] Dissolve butadiene rubber in toluene solvent first, then add peroxyformic acid obtained by mixing 5.81g 88% chemically pure formic acid and 10.49g30% chemically pure hydrogen peroxide, and oxidize butadiene rubber for about 3~ 12h, the reaction solution was obtained. Then use distilled water to wash the reaction solution in a separatory funnel, separate unreacted formic acid and hydrogen peroxide, and then use ethanol precipitation to precipitate the epoxidized butadiene rubber in the reaction solution, and dry it to obtain the first intermediate product epoxy Butadiene rubber, wherein the molar ratio of the double bond in the main chain of the epoxidized butadiene rubber to the epoxy group is 5:5.

[0065] The above-mentioned epoxidized butadiene rubber was dissolved in the organic solvent xylene, 21.6 g of DOPO powder was added, the temperature was raised to 140° C., and the reaction was carried out at constant temperature for 12 hours. Then 13.4 g of polyaniline was...

Embodiment 2

[0068] The only difference between Example 2 and Example 1 is that the mass ratio of macromolecule flame retardant to polylactic acid is 20:80.

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Abstract

The present invention involves a polymer foaming material and its preparation method.Get the first intermediate product; mix the first intermediate product with the 9,10‑ dihydrous hydrogen ‑ 9‑ 氧 氧 ‑ 10‑ Phosphorus ‑ 氧 氧 氧 氧 氧 and the second solvent, and react at the second temperature to get the containing containing, get the containedThe solution of the second intermediate product, the molecular chain of the second intermediate product contains the chemical structure shown in the type (1), mixes the solution containing the second intermediate product with polyiline, and reacts at the third temperature to get a largeMolecular flame retardant, molecular chain of macromolecular flame retardant contains the chemical structure and chemical structure shown in the type (2) shown in the type (1), mix the large molecular flame retardant with the second polymer, and the second polymer, andHeat pressure, get pre -product, and foam at the fourth temperature, so as to obtain polymer foaming materials with excellent flame retardant, sound insulation, and elasticity.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polymer foam material and a preparation method thereof. Background technique [0002] Foaming material refers to a porous material with polymer as the matrix and numerous bubbles inside, and it can also be regarded as a composite material with gas as the filler. However, most polymer materials are inherently flammable, which greatly limits their applications in electrical and electronic, automotive, construction and other fields. For example, polylactic acid is a bio-friendly polymer material, which has good mechanical strength and can be degraded in the natural environment. It is one of the common materials in life. However, the limiting oxygen index of polylactic acid is only 19%, which is a flammable material, and when it is heated and decomposed, it will produce molten droplets, which will easily lead to the further spread of the fire. And after the polylactic a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/12C08L51/06C08L69/00C08L55/02C08L77/00C08L15/00C08J9/12C08C19/24C08G81/02
CPCC08J9/122C08J9/0061C08C19/24C08G81/024C08J2367/04C08J2323/12C08J2451/06C08J2369/00C08J2455/02C08J2377/00C08J2203/06C08J2203/08C08J2415/00
Inventor 庞永艳郑文革覃康培
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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