Nano magnesium carbonate modified fire protection engineering plastic and preparation method thereof

A technology of nano-magnesium carbonate and engineering plastics, applied in the direction of fibrous fillers, dyed polymer organic compounds, etc., can solve the problems of plastic mechanical properties degradation, low heat resistance, etc., achieve high flame retardant efficiency, expensive, Good effect of scratch resistance and abrasion resistance

Inactive Publication Date: 2011-02-09
SHENZHEN HALCYON NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, adding magnesium carbonate to engineering plastics will cause the mechanical properties of the plastic to decrease, and its heat resistance will also decrease. To achieve good mechanical properties and heat resistance, organic flame retardants such as bromine or phosphorus must be used. , so the preparation of fire-resistant engineering plastics with good mechanical properties and heat resistance and the use of inorganic flame retardants has always been a difficult point in the industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of nano magnesium carbonate modified fireproof engineering plastics, its preparation method is as follows:

[0052] Preparation of nano basic magnesium carbonate by uniform precipitation method;

[0053] The concrete method of described preparation nano-magnesium carbonate is as follows:

[0054] with MgCl 2 ·6H 2 O and CO(NH 2 ) 2 As the reaction raw material, MgCl 2 ·6H 2 O and CO(NH 2 ) 2 To prepare a solution with a molar concentration of 1.2mol / L, first mix 50ml of CO(NH 2 ) 2 Add 100ml of Teflon-lined reaction kettle, heat to 100°C, then slowly add 10mol of MgCl 2 solution; after heating, stirring, and reacting for a period of time, naturally cool down and age for 1 h; filter under reduced pressure, wash repeatedly until no chloride ions are detected, then wash with 20ml of absolute ethanol for 3 times for solvent replacement, and the obtained basic magnesium carbonate precipitates Dry in a drying oven at 100° C. for 2 hours to obtain basic magne...

Embodiment 2

[0061] A kind of nano magnesium carbonate modified fireproof engineering plastics, its preparation method is as follows:

[0062] Preparation of nano basic magnesium carbonate by uniform precipitation method;

[0063] The concrete method of described preparation nano-magnesium carbonate is as follows:

[0064] with MgCl 2 ·6H 2 O and CO(NH 2 ) 2 As the reaction raw material, MgCl 2 ·6H 2 O and CO(NH 2 ) 2 To prepare a solution with a molar concentration of 1.2mol / L, first mix 50ml of CO(NH 2 ) 2 Add 100ml of Teflon-lined reaction kettle, heat to 100°C, then slowly add 10mol of MgCl 2 solution; after heating, stirring, and reacting for a period of time, naturally cool down and age for 1 h; filter under reduced pressure, wash repeatedly until no chloride ions are detected, then wash with 20ml of absolute ethanol for 3 times for solvent replacement, and the obtained basic magnesium carbonate precipitates Dry in a drying oven at 100° C. for 2 hours to obtain basic magne...

Embodiment 3

[0074] A kind of nano magnesium carbonate modified fireproof engineering plastics, its preparation method is as follows:

[0075] Preparation of nano anhydrous magnesium carbonate by conversion synthesis method;

[0076] The concrete method of described preparation nano anhydrous magnesium carbonate is as follows:

[0077] Add water to ammonium sulfate in the conversion reaction kettle, add light-burned magnesite powder to carry out conversion reaction to produce magnesium sulfate, and obtain a net magnesium sulfate solution for synthesis through filtration;

[0078] With the magnesium sulfate solution that above conversion reaction makes, press reaction mass mol ratio Mg in synthesis kettle 2+ :CO 2 : NH 3 =1: 2: 4 molar ratio carries out synthetic reaction, makes intermediate product magnesium ammonium carbonate tetrahydrate Mg (NH 4 ) 2 (CO 3 ) 2 4H 2 O double salt crystal particles, after drying, the filtrate is ammonium sulfate and sent to the conversion reaction ...

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Abstract

The invention belongs to the technical field of polymer engineering materials and relates to magnesium carbonate modified halogen-free fire protection engineering plastic and a preparation method thereof. The engineering plastic comprises the following components in percentage by mass: 1 to 20 percent of nano magnesium carbonate, 1 to 15 percent of aids, 1 to 15 percent of synthetic resin and the balance of plastic. The nano magnesium carbonate is added into a fire resistant agent and the mechanical property of engineering plastic is not greatly influenced, and in addition, the added nano magnesium carbonate can also improve the rigidity and heat resistance of engineering plastic. A magnesium carbonate fire retardant is obtained by performing in-situ dispersion polymerization on the nano magnesium carbonate and alkyd resin. As the alkyd resin is compatible with nano magnesium carbonate, the dispersibility of nano magnesium carbonate in a polymer is improved and the alkyd resin is compatible with the synthetic resin.

Description

【Technical field】 [0001] The invention belongs to the technical field of polymer engineering materials, and relates to a nano-magnesium carbonate modified fireproof engineering plastic and a preparation method thereof. 【Background technique】 [0002] Polymer materials are closely related to the consumer electronics industry, and consumer electronics products especially require the use of a large amount of polymer materials. The housing materials of consumer electronics products are usually divided into two categories: plastic alloys and metal alloys. Metal alloys are rarely used due to their high price and good scratch and wear resistance, while PC / ABS plastic alloys ensure the protection of the fuselage with their excellent impact resistance and dimensional stability, excellent dyeability and processing The flexibility makes the later molding processing and dyeing very easy, occupying most of the market share of shell materials. [0003] In order to improve the safety per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08L67/02C08K9/10C08K3/26C08K3/22C08G59/00C08K3/36C08L77/00C09C3/10C08G63/676C08L55/02C08L69/00C09C1/02C08L23/12
Inventor 胡军辉赖华林郑碧娟陈军曾伟华
Owner SHENZHEN HALCYON NEW MATERIALS
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