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Double-wall-material microencapsulated red phosphorus, preparation method thereof and flame-retardant wood-plastic composite

A wood-plastic composite material and microcapsule red phosphorus technology, which is applied in the field of flame retardant polymers, can solve problems such as flammability, and achieve the effects of small amount of flame retardant added, strong interface bonding force, and excellent comprehensive performance.

Inactive Publication Date: 2018-03-23
TIANJIN UNIV OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since wood fibers and polymers, which are the raw materials for wood-plastic composite packaging materials, are flammable materials, this material with good performance has a big shortcoming of being flammable.

Method used

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  • Double-wall-material microencapsulated red phosphorus, preparation method thereof and flame-retardant wood-plastic composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Experimental formula: microcapsule red phosphorus 17.65g (microcapsule red phosphorus powder content is 15g), sodium hexametaphosphate 0.0075g (0.05%×15=0.0075g of microcapsule red phosphorus powder mass), water 60g (with microcapsule red phosphorus powder Phosphorus powder mass ratio=4:1), magnesium sulfate heptahydrate 4.5g (the solid mass of magnesium sulfate heptahydrate is 30% of the mass of red phosphorus in microcapsule red phosphorus powder).

[0038] Put 17.65g of microcapsule red phosphorus powder coated with melamine resin, 0.075g of sodium hexametaphosphate, and 60g of water into a four-neck flask, heat up to 50 degrees, stir and disperse; Slowly add the solution into the four-necked flask; prepare a 10% solution of sodium carbonate and add it dropwise to the four-necked flask. When the pH value reaches 8.0, stop the dropwise addition, continue stirring for 1 hour, and obtain Double-walled microencapsulated red phosphorus.

[0039] With 40 parts of polyethy...

Embodiment 2

[0041] Experimental formula: microcapsule red phosphorus 17.65g (microcapsule red phosphorus powder content is 15g), OP-100.0025g, sodium lauryl sulfate 0.0050g (the mass ratio of OP-10 and sodium lauryl sulfate is 1:3 , both total mass is 0.05% of microcapsule red phosphorus powder quality, water 60g (with microcapsule red phosphorus powder mass ratio=4:1), magnesium sulfate heptahydrate 6.8g (magnesium sulfate heptahydrate solid quality is microcapsule 45% of the mass of red phosphorus powder red phosphorus).

[0042] Put 17.65g of microcapsule red phosphorus powder coated with melamine resin, 0.025g of OP-10, 0.050g of sodium lauryl sulfate, and 60g of water into a four-necked flask, raise the temperature to 55 degrees, stir and disperse; Magnesium sulfate heptahydrate was prepared as a 10% solution, and slowly added to the four-necked flask; sodium carbonate was prepared as a 10% solution, and added dropwise to the four-necked flask, when the pH value reached 9.0, stop add...

Embodiment 3

[0045]Experimental formula: microcapsule red phosphorus 17.65g (red phosphorus content is 15g), OP-10 0.0050g, sodium hexametaphosphate 0.0100g (the mass ratio of OP-10 and sodium hexametaphosphate is 1:3, the total mass of both is 0.10% of the red phosphorus mass), water 60g (with red phosphorus mass ratio=4:1), magnesium sulfate heptahydrate 9.0g (the solid mass of magnesium sulfate heptahydrate is 60% of the red phosphorus mass of the microcapsule red phosphorus powder).

[0046] Put 17.65g of microcapsule red phosphorus powder coated with melamine resin, 0.025g of OP-10, 0.050g of sodium hexametaphosphate, and 60g of water into a four-necked flask, raise the temperature to 60 degrees, stir and disperse; 9.0g of heptahydrate Magnesium sulfate was formulated into a 10% solution, and slowly added into a four-necked flask; sodium carbonate was formulated into a 10% solution, and added dropwise to a four-necked flask, and when the pH value reached 10.0, the addition was stopped,...

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Abstract

The invention discloses double-wall-material microencapsulated red phosphorus, a preparation method thereof and a flame-retardant wood-plastic composite. The preparation method comprises the followingsteps: putting microencapsulated red phosphorus powder coated with melamine resin, a dispersing agent and water into a four-neck flask, heating the mixture to 50-60 DEG C, and performing stirring anddispersing; preparing a 10% solution of magnesium sulfate heptahydrate, and slowly adding the solution to the four-necked flask; preparing a 10% solution of sodium carbonate, adding the solution dropwise to the four-necked flask, stopping adding dropwise when pH reaches 8-10, stirring the mixture continuously for 2 hours, and performing cooling, filtering and drying to obtain double-wall-materialmicroencapsulated red phosphorus. Wood meal treated by a coupling agent, a plastic substrate, double-wall microencapsulated red phosphorus, a lubricant and a smoke suppressant are mixed sufficientlyat a speed of 100-150 rpm for 30-60 minutes; the mixture is subjected to extrusion and granulation by a double-screw extruder, and then a product enters an injection molding machine or a plate vulcanizing machine for molding. Flame retardancy of the wood-plastic composite is improved by the obtained double-wall-material microencapsulated red phosphorus.

Description

technical field [0001] The invention relates to the technical field of flame-retardant polymers, in particular to a preparation method of double-wall material microcapsule red phosphorus and a flame-retardant wood-plastic composite material containing the microcapsule red phosphorus. Background technique [0002] Red phosphorus has been used as a flame retardant for more than 20 years, and it is a new type of flame retardant that has been highly valued. Red phosphorus only contains the flame-retardant element phosphorus, so it has higher flame-retardant efficiency than other phosphorus-based flame retardants, and can achieve outstanding flame-retardant effects when the dosage is very low. In some cases, the flame retardant efficiency of red phosphorus is even better than that of brominated flame retardants. However, red phosphorus powder has disadvantages such as easy moisture absorption, easy oxidation, and easy explosion. [0003] Wood-plastic composite material is a mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L27/06C08L97/02C08K13/06C08K9/10C08K3/02C08K3/22C08K5/09C08K3/38B01J13/04
CPCC08L23/06B01J13/04C08K2003/026C08K2003/2224C08K2003/2227C08K2003/387C08L23/12C08L27/06C08L2201/02C08L97/02C08K13/06C08K9/10C08K3/02C08K3/22C08K5/09C08K3/38
Inventor 郭玉花李芷晴赵雯翟若瑾原则坤冯琳
Owner TIANJIN UNIV OF COMMERCE
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