Nanomaterial composite flame-retardant engineering plastic preparation method

A technology of engineering plastics and composite flame retardant, which is applied in the field of preparation of nano-material composite flame retardant engineering plastics, can solve the problems of decreased flame retardant performance, inability to further improve mechanical properties, easy migration of flame retardants, etc., and increase the quantity , the effect of improving compatibility

Inactive Publication Date: 2019-04-05
胡果青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: when phosphorus-based flame retardants and inorganic fillers are used in the preparation process of traditional flame-retardant engineering plastics, the interfacial compatibility between the fillers, flame retardants and the plastic matrix is ​​not good, resulting in Flame retardants are prone to migration during product storage and use, resulting in a decrease in flame retardant performance and the disadvantages that the mechanical properties cannot be further improved. A preparation method for nanomaterial composite flame retardant engineering plastics is provided.

Method used

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example 1

[0025]Mix the plant fiber and biogas liquid at a mass ratio of 1:10, let it stand and soak for 5 hours at room temperature, then transfer the soaked plant fiber into the steam explosion tank, and then pass saturated water vapor into the steam explosion tank , until the pressure in the steam explosion tank reaches 2.0 MPa, keep the pressure for 10 minutes, open the discharge valve of the steam explosion tank, spray the material in the steam explosion tank into the receiving container, and obtain the steam explosion slag; After freezing for 45s, transfer it to an extruder, and press it for 30 minutes under the condition of 20MPa to obtain the pressed material, then transfer the obtained pressed material into a vacuum drying oven, and vacuum dry it at a temperature of 85°C and a pressure of 80Pa. to a constant weight to obtain a dry press material; mix graphene oxide and water at a mass ratio of 1:18 and pour it into a beaker, and ultrasonically disperse it for 20 minutes at an ul...

example 2

[0027] Mix graphene oxide and water into a beaker at a mass ratio of 1:18, and ultrasonically disperse for 20 minutes at an ultrasonic frequency of 60 kHz, then add sodium polystyrene sulfonate that is 0.3 times the mass of graphene oxide into the beaker, And use a stirrer to stir and react at a speed of 400r / min for 60min to obtain a graphene oxide dispersion; after mixing the graphene oxide dispersion and a cobalt salt solution with a mass fraction of 8% at a mass ratio of 1:2, the ultrasonic frequency is 60kHz Under the condition of ultrasonic dispersion for 30 minutes, and then filtered to obtain a filter cake, and the obtained filter cake was dried to a constant weight at a temperature of 90 ° C to obtain pretreated graphene oxide; the pretreated graphene oxide was transferred to a tube furnace , and feed a reducing gas into the furnace at a rate of 300mL / min. Under the protection of the reducing gas, the temperature was programmed to rise to 550°C at a rate of 3°C / min. t...

example 3

[0029] Mix graphene oxide and water into a beaker at a mass ratio of 1:18, and ultrasonically disperse for 20 minutes at an ultrasonic frequency of 60 kHz, then add sodium polystyrene sulfonate that is 0.3 times the mass of graphene oxide into the beaker, And use a stirrer to stir and react at a speed of 400r / min for 60min to obtain a graphene oxide dispersion; after mixing the graphene oxide dispersion and a cobalt salt solution with a mass fraction of 8% at a mass ratio of 1:2, the ultrasonic frequency is 60kHz Under the condition of ultrasonic dispersion for 30 minutes, and then filtered to obtain a filter cake, and the obtained filter cake was dried to a constant weight at a temperature of 90 ° C to obtain pretreated graphene oxide; the pretreated graphene oxide was transferred to a tube furnace , and feed a reducing gas into the furnace at a rate of 300mL / min. Under the protection of the reducing gas, the temperature was programmed to rise to 550°C at a rate of 3°C / min. t...

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Abstract

The invention belongs to the technical field of high polymer materials and discloses a nanomaterial composite flame-retardant engineering plastic preparation method. The method includes: soaking plantfibers in biogas fluid, performing steam explosion treatment to obtain steam explosion residues, and then performing freeze pressing and vacuum drying to obtain a dried pressed material; dispersing graphene oxide, treating with sodium polystyrene sulfonate to obtain graphene oxide dispersion liquid, subjecting the graphene oxide dispersion liquid and cobalt salt solution to mixed reaction to obtain pretreated graphene oxide, subjecting the pretreated graphene oxide to heating reduction reaction to obtain a reduction material, and subjecting the reduction material to reaction with isocyanate to obtain modified graphene oxide; well mixing the dried pressed material, the modified graphene oxide, engineering plastic, a plasticizer and an antioxidant, and performing extrusion molding to obtainnanomaterial composite flame-retardant engineering plastic. By adoption of the technical scheme, the prepared nanomaterial composite flame-retardant engineering plastic has advantages of excellent flame retardation and mechanical performances.

Description

technical field [0001] The invention discloses a preparation method of nano-material composite flame-retardant engineering plastics, belonging to the technical field of polymer materials. Background technique [0002] Engineering plastics can be used as engineering materials and plastics that replace metal manufacturing machine parts, etc. Engineering plastics have excellent comprehensive performance, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used in harsh chemical and physical environments for a long time, and can replace metals as engineering structural materials. , but the price is more expensive and the output is smaller. It is a plastic with excellent strength, impact resistance, heat resistance, hardness and aging resistance. Engineering plastics refer to plastics used as structural materials in engineering, so they can replace metals as some mechanical parts. There are many properties and ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L97/02C08K9/00C08K9/08C08K9/02C08K9/04C08K3/04
CPCC08K3/042C08K9/00C08K9/02C08K9/04C08K9/08C08L101/00C08L2201/02C08L97/02
Inventor 胡果青许正祥吴加仁
Owner 胡果青
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