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Flame retardant organic glass and preparation method thereof

A plexiglass, flame retardant technology, applied in the field of flame retardant plexiglass and its preparation, can solve the problems of sacrificing the thermal properties and transparency of materials, health hazards, and reducing thermal properties of materials, and achieve good flame retardant properties, The effect of delaying combustion and reducing spillage

Inactive Publication Date: 2018-03-09
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the disadvantage of the method of physically adding flame retardants is that the thermal properties and transparency of the material itself are often sacrificed during flame retardancy; the disadvantage of chemically introducing ordinary reactive flame retardants is that it can coordinate the contradiction between flame retardancy and transparency. , but it is easy to reduce the thermal performance of the material
[0004] With the development of flame retardant technology of polymer materials and the expansion of application fields, the research on unique new flame retardants and flame retardant technology is attracting more and more attention. Among them, halogen-containing flame retardants are the organic flame retardants with the largest output in the world. Halogen-containing flame retardants release a large amount of hydrogen halide gas when the material is burned, and then absorb water to form a highly corrosive hydrohalic acid, causing secondary pollution and causing harm to people's health

Method used

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  • Flame retardant organic glass and preparation method thereof
  • Flame retardant organic glass and preparation method thereof
  • Flame retardant organic glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the components specified in Table 1 below, weigh the raw materials according to the parts by weight, add phenyl phosphate dichloride and 1 / 3 part by weight of tetrahydrofuran into the mixer, the temperature is 0 °C, and the speed is 50-60r / min , time 20-30min; then add triethylamine, continue to stir; then slowly dropwise add hydroxyethyl acrylate and 1 / 3 parts by weight of tetrahydrofuran, dropwise time 1.5-2h; After reacting for 10 hours, remove the triethylamine salt by filtration, remove the unreacted monomer by evaporation; then add azobisisobutylcyanide and mix evenly, put the mixture in an oven at 80-90°C for 5-6 hours to obtain a linear homopolymer ; Add the linear homopolymer to 1 / 3 parts by weight of tetrahydrofuran, add water and hydrochloric acid to catalyze, react and stir for 5-6h; pour the above liquid into the mold, keep the room temperature for 70-72h, and then put it into a vacuum oven Dry in medium for 5-6h to get the synthetic flame reta...

Embodiment 2

[0022] The method of Example 1 was repeated according to the content of each component specified in Table 1 below, and the test results are listed in Table 1.

Embodiment 3

[0024] The method of Example 1 was repeated according to the content of each component specified in Table 1 below, and the test results are listed in Table 1.

[0025] 1. Performance testing.

[0026] 1. Testing and Characterization.

[0027] Oxygen index test: Measured according to GB / T 2406-1993 standard.

[0028] 2. The flame-retardant plexiglass prepared in Examples 1-3 was tested for performance, and the results are shown in Table 1.

[0029] Table 1 Physical and chemical indicators of flame-retardant plexiglass.

[0030]

[0031] It can be seen from Table 1 that the initial weight loss temperature of the flame-retardant plexiglass of the present invention is ≥ 180 ° C, the half weight loss temperature is > 370 ° C, the initial weight loss temperature of PMMA is 203.0 ° C, and the half weight loss temperature is > 294.0 ° C, the weight loss area of ​​the present invention Compared with pure PMMA, the migration to high temperature shows that the introduction of the s...

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Abstract

The invention belongs to the technical field of organic glass materials, and relates to a flame-retardant organic glass and a preparation method thereof. The flame-retardant plexiglass of the present invention is prepared from the following raw materials in parts by weight: 60-100 parts of methyl methacrylate, 1-2 parts of phenyl phosphate dichloride, 5-20 parts of hydrochloric acid, and 60 parts of tetrahydrofuran ‑100 parts, 10‑30 parts of triethylamine, 10‑30 parts of hydroxyethyl acrylate, 0.1‑0.5 parts of azobisisobutylcyanide and 5‑20 parts of water. The invention adds a synthetic flame retardant to make the outer carbon layer of the flame-retardant plexiglass very dense and smooth, which reduces the overflow of flammable gas and plays the role of heat and oxygen insulation, improves the flame-retardant performance, and improves the thermal stability. performance while maintaining good transparency.

Description

technical field [0001] The invention belongs to the technical field of organic glass materials, and relates to a flame-retardant organic glass and a preparation method thereof. Background technique [0002] Polymethyl methacrylate (PMMA), commonly known as "organic glass", is a typical transparent polymer material. It is widely used in electronics due to its excellent optical properties, good chemical stability, easy processing, and low cost. Communications, biomedicine, aerospace, automotive industry, construction and many other fields. However, plexiglass is extremely flammable and has poor heat resistance. When exposed to high temperature or fire, it will be ignited rapidly, and will melt and drip while releasing a large amount of heat and toxic gases, seriously endangering human life and property safety. As a result, the fire hazard of plexiglass has drawn widespread attention from government regulators, consumers, and manufacturers. [0003] At present, the flame reta...

Claims

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Application Information

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IPC IPC(8): C08F265/04C08F220/14C08L33/12C08L33/14
CPCC08F265/04C08L33/12C08L2201/02C08L2201/08C08L2201/10C08L2205/02C08F220/14C08L33/14
Inventor 刘春峰王杨松柴立强
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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