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Preparation method for high-strength flame-retardant wood-plastic floor

A wood-plastic floor, high-strength technology, applied in the field of floor preparation, can solve the problems of easily deformed or cracked wood plastics, such as flame retardant performance and low bonding force, and achieve the effect of improving compressive strength and enhancing interface bonding force.

Inactive Publication Date: 2018-06-22
常州鼎众冷暖设备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved by the present invention is to provide a high-strength flame-retardant wood-plastic floor for the defects of wood-plastics that are easily deformed or cracked under heavy pressure due to the small bonding force between wood and resin, and wood-plastics with poor flame retardancy. Preparation

Method used

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  • Preparation method for high-strength flame-retardant wood-plastic floor

Examples

Experimental program
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Effect test

example 1

[0024]Take 200g of sepiolite, put it in a stone grinder and grind for 2 hours, pass through a 200-mesh sieve to obtain sepiolite powder, add 400mL of phosphoric acid solution with a mass fraction of 30% to the plastic basin, pour the sepiolite powder into the plastic basin, and stir Disperse for 40 minutes to obtain a sepiolite suspension, and feed 8L of ammonia gas into the sepiolite suspension to obtain a mother liquor with flame-retardant function; add 40g of β-cyclodextrin, 12g of sodium hydroxide and 200mL of distilled water into a four-necked flask. Heating the four-necked flask in a water bath to 80°C, starting the agitator, stirring and mixing at a speed of 300r / min for 35min, and putting 60mL of dimethyl sulfoxide solution of E-51 epoxy resin with a mass fraction of 40% into constant pressure drops Liquid funnel, drop the dimethyl sulfoxide solution of E-51 type epoxy resin to the four-necked flask with a constant pressure dropping funnel at a dropping rate of 5mL / min,...

example 2

[0026] Take 225g of sepiolite, place it in a stone grinder and grind for 2.5h, pass through a 200-mesh sieve to obtain sepiolite powder, add 450mL of phosphoric acid solution with a mass fraction of 30% into the plastic basin, pour the sepiolite powder into the plastic basin, Stir and disperse for 45 minutes to obtain a sepiolite suspension, inject 9L of ammonia gas into the sepiolite suspension to obtain a flame-retardant mother liquor; add 45g of β-cyclodextrin, 14g of sodium hydroxide and 250mL of distilled water into a four-necked flask, Heat the four-neck flask in a water bath to 85°C, start the agitator, stir and mix at a speed of 320r / min for 37min, and fill 70mL of dimethyl sulfoxide solution of E-51 epoxy resin with a mass fraction of 40% into the constant pressure Dropping funnel, drop the dimethyl sulfoxide solution of E-51 type epoxy resin to the four-necked flask with a constant pressure dropping funnel at a dropping rate of 7mL / min, keep the temperature for 7h, an...

example 3

[0028] Take 250g of sepiolite, put it in a stone grinder and grind for 3 hours, pass through a 200-mesh sieve to obtain sepiolite powder, add 500mL of phosphoric acid solution with a mass fraction of 30% to the plastic basin, pour the sepiolite powder into the plastic basin, and stir Disperse for 50 minutes to obtain a sepiolite suspension, feed 10L of ammonia gas into the sepiolite suspension to obtain a flame-retardant mother liquor; Heating the four-necked flask in a water bath to 90°C, starting the agitator, stirring and mixing at a speed of 350r / min for 40min, and putting 75mL of dimethyl sulfoxide solution of E-51 epoxy resin with a mass fraction of 40% into constant pressure drops Using a constant pressure dropping funnel, add the dimethyl sulfoxide solution of E-51 type epoxy resin dropwise to the four-necked flask at a dropping rate of 10mL / min, and keep the reaction for 8 hours to obtain the reaction product; Wash the reaction product 5 times, then place the washed r...

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Abstract

The invention discloses a preparation method for a high-strength flame-retardant wood-plastic floor, and belongs to the technical field of preparation of floors. According to the method provided by the invention, sepiolite and a phosphoric acid solution are mixed and dispersed to obtain a flame-retardant functional mother liquor, a dimethyl sulfoxide solution of E-51 epoxy resin is added dropwiseinto an alkalizing solution of beta-cyclodextrin for a reaction to obtain nano fibers, polyethylene masterbatch particles are subjected to rubber mixing for melting, a wood and stone fiber sponge is mixed, the obtained material is injected into a hot pressing mold for hot pressing to obtain the high-strength flame-retardant wood-plastic floor, lignin is adsorbed on the fiber surface and in the pores to enhance interfacial bonding force of the lignin and sepiolite fibers, and therefore the compressive strength of the wood-plastic floor is improved; and the nano fiber sponge is prepared by soaking of resin in the flame-retardant functional mother liquor, sepiolite powder in the flame-retardant functional mother liquor is a magnesium-enriched silicate compound, the compound can form a magnesium hydroxide crystal and ammonium phosphate under the action of an ammonia gas and phosphoric acid, the integrity of a polyethylene matrix skeleton is maintained, oxygen supply during combustion is insufficient, combustion is quickly stopped, and therefore the better flame retardant effect on the wood-plastic floor is achieved.

Description

technical field [0001] The invention discloses a preparation method of a high-strength flame-retardant wood-plastic floor, which belongs to the technical field of floor preparation. Background technique [0002] Wood-plastic flooring is a new type of environmentally friendly wood-plastic composite material product. The wood phenol produced in the process of producing high-density fiberboard is added to recycled plastics to make wood-plastic composite materials through granulation equipment, and then extruded into production groups. WPC flooring. The main material of wood-plastic outdoor flooring is PE and wood powder or bamboo powder. After adding additives and mixing at high speed, it is granulated, and then the pellets are extruded by an extruder to form a material. This type of floor can be used in gardens and villas. Wait for the outdoor platform. [0003] Wood-plastic composite board is a kind of wood (wood cellulose, plant cellulose) as the base material, thermoplast...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L97/02C08L63/00C08L5/16C08K13/06C08K9/12C08K3/34C08K3/22C08K3/32C08K7/26B29C43/02
CPCB29C43/02C08K2003/2224C08K2003/322C08L23/06C08L2201/02C08L2205/035C08L2205/16C08L97/02C08L63/00C08L5/16C08K13/06C08K9/12C08K3/346C08K3/22C08K3/32C08K7/26
Inventor 许斌何少雄陈可
Owner 常州鼎众冷暖设备工程有限公司
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