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Light flame-retardant foamed plastic and preparation method thereof

A foam plastic and light-weight technology, applied in the field of foam plastic, can solve the problems of lack of flame retardancy and other problems, and achieve the effects of light weight, enhanced stability and high mixing efficiency

Inactive Publication Date: 2020-01-10
安徽超星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 obtained foam plastics are still lacking in flame retardancy.

Method used

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  • Light flame-retardant foamed plastic and preparation method thereof
  • Light flame-retardant foamed plastic and preparation method thereof
  • Light flame-retardant foamed plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The preparation method of this foamed plastics, comprises the steps:

[0051] Step S1. Accurately weigh and mix the polyether polyol, catalyst, foaming agent, and foaming aid according to the formula, then add modified expanded graphite, and stir evenly at room temperature to obtain a uniformly mixed liquid mixture;

[0052] Step S2, quickly mix the polymerized MDI weighed according to the formula with the above-mentioned liquid mixture, and place it in the foaming barrel 13 of the plastic foaming device, and turn on the first motor and the second motor at the same time,

[0053] Step S3, when the mixture starts to expand, quickly pour it from the discharge port of the foaming barrel 13 into the mold for foam molding, and take it out from the mold after the foam plastic is cooled to room temperature;

[0054] Step S4, placing the prepared foam in an oven at 80°C for 24 hours for aging treatment to obtain foamed plastics;

[0055] see Figure 1-7 As shown, the plastic ...

Embodiment 1

[0062] A lightweight flame-retardant foam plastic, made of the following raw materials in parts by weight: 80 parts of polyether polyol, 2 parts of foaming agent, 0.8 part of foaming aid, 0.2 part of catalyst, 6 parts of modified expanded graphite, polymerized MDI 40 copies;

[0063] This foam plastic is made by following steps:

[0064] Step S1. Accurately weigh and mix the polyether polyol, catalyst, foaming agent, and foaming aid according to the formula, then add modified expanded graphite, and stir evenly at room temperature to obtain a uniformly mixed liquid mixture;

[0065] Step S2, quickly mix the polymerized MDI weighed according to the formula with the above-mentioned liquid mixture, and place it in the foaming barrel 13 of the plastic foaming device, and turn on the first motor and the second motor at the same time,

[0066] Step S3, when the mixture starts to expand, quickly pour it from the discharge port of the foaming barrel 13 into the mold for foam molding, ...

Embodiment 2

[0069] A light flame-retardant foamed plastic, made of the following raw materials in parts by weight: 85 parts of polyether polyol, 3 parts of foaming agent, 0.9 part of foaming aid, 0.25 part of catalyst, 7.5 parts of modified expanded graphite, polymerized MDI 45 copies;

[0070] This foam plastic is made by following steps:

[0071] Step S1. Accurately weigh and mix the polyether polyol, catalyst, foaming agent, and foaming aid according to the formula, then add modified expanded graphite, and stir evenly at room temperature to obtain a uniformly mixed liquid mixture;

[0072] Step S2, quickly mix the polymerized MDI weighed according to the formula with the above-mentioned liquid mixture, and place it in the foaming barrel 13 of the plastic foaming device, and turn on the first motor and the second motor at the same time,

[0073] Step S3, when the mixture starts to expand, quickly pour it from the discharge port of the foaming barrel 13 into the mold for foam molding, a...

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Abstract

The invention discloses a light flame-retardant foamed plastic which is prepared from the following raw materials in parts by weight: 80-90 parts of polyether polyol, 2-4 parts of a foaming agent, 0.8-1 part of a foaming aid, 0.2-0.3 part of a catalyst, 6-9 parts of modified expanded graphite and 40-50 parts of polymerized MDI. The invention further discloses a preparation method of the foamed plastic. In the preparation method, a specially-made plastic foaming device is adopted for carrying out foaming treatment on the raw materials. Polyurethane is used as a polymer matrix, water is used asa foaming agent, dodecanol is used as a foaming air, and a fine, dense and uniform foam structures are formed; due to the addition of the modified expanded graphite, the foamed material has flame retardant property; besides, the specially-made plastic foaming device is adopted for carrying out foaming treatment on the raw materials, more air is mixed into the raw materials while the raw materialsare fully stirred, a more excellent foaming effect is achieved, and the formed foamed plastic has the fine, dense and uniform foam structures.

Description

technical field [0001] The invention belongs to the technical field of foam plastics, and in particular relates to a lightweight flame-retardant foam plastic and a preparation method thereof. Background technique [0002] Foam plastic is a kind of polymer material formed by dispersing a large number of gas micropores in solid plastic. It has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and its dielectric performance is better than that of matrix resin. It has a wide range of uses. Items are usually cushioned with foamed plastics during transportation, such as polystyrene, polyethylene, polyurethane and other foamed plastics. [0003] The Chinese invention patent application with the patent number CN201310386973.9 discloses a rigid foam made of A component, B component and filler; the A component includes polyether polyol, foam stabilizer, catalyst, Foaming agent, cross-linking agent; the B component includes isocyanate; the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08J9/00C08G18/76C08G18/48C08K9/10C08K3/04B29C44/04B29C44/34B29C44/40C08G101/00
CPCB29C44/04B29C44/3442B29C44/40C08G18/48C08G18/7664C08J9/0023C08J9/009C08J2375/08C08G2110/0083
Inventor 姜俊杰张哲张玉勇姜浩刘磊
Owner 安徽超星新材料科技有限公司
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