CN112480605A - Processing method for enhancing mechanical property of wood-plastic profile by using alloy powder - Google Patents

Abstract

The invention discloses a processing method for enhancing mechanical property of a wood-plastic profile by using alloy powder, belonging to the technical field of wood-plastic material processing and comprising the following steps: (1) processing the wood material; (2) carrying out dynamic micro-jet high-pressure homogenization treatment; (3) weighing raw materials; (4) mixing treatment; (5) and (5) injection molding. The invention provides a processing method for enhancing the mechanical property of a wood-plastic section by using alloy powder, aiming at the processing characteristics of raw materials, the raw materials are processed and then mixed in a scientific and appropriate mode, the mechanical property of the finally prepared wood-plastic section is obviously improved, the values of biomass materials, plastics and alloys are improved to a certain extent, and the application value of resources is improved.

Description

Processing method for enhancing mechanical property of wood-plastic profile by using alloy powder

Technical Field

The invention belongs to the technical field of wood-plastic material processing, and particularly relates to a processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder.

Background

The wood-plastic composite material is called wood-plastic for short, has the double characteristics of wood and plastic as a real green and environment-friendly material, and is widely applied to the fields of architectural decoration, vehicles, packaging, landscape gardens and the like. The wood-plastic industry in China began in the 80 th 20 th century, is gradually applied to manufacturing indoor and outdoor floors, decorative plates and building templates, and the national standard of the application of wood-plastic composite materials is established successively, but is relatively rarely applied in the furniture industry. As a large country for furniture production and consumption, China has a huge demand on wood, forest resources are quite limited, and the development and search of novel furniture materials become new problems to be solved urgently. The wood-plastic material is widely applied to the furniture industry, can save materials and replace wood, protects forest resources, and has important significance for relieving the problem of shortage of raw wood in the furniture industry.

However, the existing wood-plastic composite material mostly has the defects of poor mechanical property, easy combustion and the like, and in order to improve the defects of poor mechanical property, easy combustion and the like of the wood-plastic composite material, for example, the application number of CN202010647042.X discloses a preparation method of an alloy wood-plastic section. The alloy wood-plastic section comprises a wood-plastic layer and an alloy layer, wherein the wood-plastic layer is coated on the alloy layer through a co-extrusion process; the preparation method of the alloy wood-plastic section comprises the following steps: mixing polyethylene resin, wood powder, a flame retardant, a lubricant, an antioxidant and the like, and then granulating to obtain wood-plastic layer particles; mixing aluminum, silicon, magnesium, zinc, copper, cadmium, manganese, strontium, beryllium, niobium and the like to obtain an alloy layer raw material; respectively extruding wood plastic and hot melt adhesive by using two single screw extruders, and conveying alloy raw materials by using a tractor; firstly, extruding the hot melt adhesive and the alloy raw material in a co-extrusion die to form a blank, cooling the blank, and then co-extruding the wood plastic and the blank in the co-extrusion die. The alloy layer is added in the wood-plastic layer, so that the compressive strength and the flexural strength of the whole material are improved, and the section bar can be also suitable for certain building members with higher requirements on strength. According to the invention, the alloy layer is added in the wood-plastic layer, so that the compression strength and the breaking strength of the wood-plastic section are improved, but the problems of overall performance reduction caused by the phenomena of uneven stress and different stresses are easily caused in the use process due to large physical property difference between the alloy and the wood-plastic.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a processing method for enhancing the mechanical property of a wood-plastic section by using alloy powder, aiming at the processing characteristics of raw materials, the raw materials are processed and then mixed in a scientific and appropriate mode, so that the mechanical property of the finally prepared wood-plastic section is obviously improved, the values of biomass materials, plastics and alloys are improved to a certain degree, and the application value of resources is improved.

In order to achieve the purpose, the invention provides the following technical scheme:

a processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1-2 hours, and filtering out for later use;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cooling treatment in the operation b into a bead mill for grinding treatment, and obtaining biomass powder for later use after finishing the grinding treatment;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B together in a micro-jet high-pressure homogenizer according to the weight ratio of 1: 70-90: 120-140 for high-pressure homogenization treatment, and taking out a homogenized product for later use;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 28-32% of epoxy resin, 30-36% of the mixture A obtained in the step (2), 405-7% of tween, 0.23-0.27% of silicon dioxide, 0.3-0.7% of potassium sorbate, 3-6% of xanthan gum, 4-6% of oleic acid, 0.3-0.6% of diisobutyl phthalate and the balance of ionized water for later use in a corresponding weight percentage manner;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, performing laser shock wave treatment while mixing treatment, and taking out the mixed materials for later use;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Further, the treating fluid A in the operation a in the step (1) comprises the following components in percentage by weight: 0.4-0.6% of artemisinin, 3-4% of carbendazim, 606-10% of tween, 0.2-0.6% of sodium diacetate, 0.1-0.16% of phospholipid, 1-1.4% of ethylenediamine and the balance of 75% of ethanol.

Further, the rotation speed of the bead mill is controlled to be 700-1000 rpm during the grinding treatment in the operation c of the step (1), and the grinding time is 1-2 h.

By adopting the technical scheme, the biomass material is crushed and then immersed in the treatment solution, and the biological characteristics of the biomass material are easy to infect by the external environment, so that the phenomenon of mildew occurs, even the biomass material is corroded by insect pests, and the performance of the finished product is poor. And improves the processing characteristics of the wooden material.

Further, the treating fluid B in the operation a in the step (2) comprises the following components in percentage by weight: 4-6% of polyethylene glycol, 8-12% of sodium dodecyl benzene sulfonate, 5-9% of glycerol, 0.3-0.9% of polyvinylpyrrolidone, 0.3-0.6% of butyl titanate, 3-5% of titanate coupling agent and the balance of deionized water.

Further, the working pressure of the micro-jet high-pressure homogenizer is controlled to be 80-100 MPa during the high-pressure homogenizing treatment in the step (2).

By adopting the technical scheme, the alloy powder and the processed biomass powder are jointly placed in a micro-jet high-pressure homogenizer according to a proper proportion for high-pressure homogenization treatment, and the alloy powder is rapidly contacted and tightly combined with the processed biomass powder through the actions of high-speed collision, high-frequency oscillation, instantaneous pressure drop, strong shearing, cavitation and the like on the materials in an oscillation reaction cavity.

Further, the temperature in the mixing mill is controlled to be 250-270 ℃ during the mixing treatment in the step (4), and the mixing treatment time is 20-30 min.

Further, the laser in the step (4) has a wavelength of 2-3 μm, a pulse width of 30-40 ns, and a laser impact power density of 3-4 GW/cm²The energy is 12-14J.

By adopting the technical scheme, the raw materials are mixed according to a proper weight ratio, the laser shock wave treatment is carried out while the mixing treatment is carried out, the laser shock wave penetrates through the restraint layer to be radiated onto the protective layer by adjusting the treatment parameters, the absorption layer fully absorbs the laser shock wave strengthening pulse energy and is vaporized and ionized in a very short time to form high-temperature high-plasma and rapidly spray outwards, but due to the existence of the restraint layer, the expansion of the plasma is restrained and limited, so that the internal pressure of the plasma is rapidly increased, the shock load of which the pressure is up to GPa is generated on the surface of the mixed material, the strong shock wave is generated in a very short time to be transmitted into the raw materials, the raw materials generate yield and plastic deformation, and certain residual stress is induced at the same time, thereby the mutual contact between the alloy powder, the biomass powder, the matrix component and the auxiliary component is promoted, the homogenization is promoted, and the performance of the mixed material is improved.

Compared with the prior art, the invention has the following advantages:

the invention provides a processing method for enhancing the mechanical property of a wood-plastic section by using alloy powder, aiming at the processing characteristics of raw materials, the raw materials are processed and then mixed in a scientific and appropriate mode, the mechanical property of the finally prepared wood-plastic section is obviously improved, the values of biomass materials, plastics and alloys are improved to a certain extent, and the application value of resources is improved.

Detailed Description

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1-2 hours, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.4-0.6% of artemisinin, 3-4% of carbendazim, 606-10% of tween, 0.2-0.6% of sodium diacetate, 0.1-0.16% of phospholipid, 1-1.4% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 700-1000 rpm during the grinding treatment, and the grinding time is 1-2 h, so that biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B together in a micro-jet high-pressure homogenizer according to the weight ratio of 1: 70-90: 120-140 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 80-100 MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 4-6% of polyethylene glycol, 8-12% of sodium dodecyl benzene sulfonate, 5-9% of glycerol, 0.3-0.9% of polyvinylpyrrolidone, 0.3-0.6% of butyl titanate, 3-5% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 28-32% of epoxy resin, 30-36% of the mixture A obtained in the step (2), 405-7% of tween, 0.23-0.27% of silicon dioxide, 0.3-0.7% of potassium sorbate, 3-6% of xanthan gum, 4-6% of oleic acid, 0.3-0.6% of diisobutyl phthalate and the balance of ionized water for later use in a corresponding weight percentage manner;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing roll in sequence for mixing treatment, controlling the temperature in the mixing roll to be 250-270 ℃ during mixing treatment, controlling the mixing treatment time to be 20-30 min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2-3 mu m during laser shock treatment, the pulse width is 30-40 ns, and the laser shock power density is 3-4 GW/cm²Taking out the mixed material for later use after the energy is 12-14J;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

For further explanation of the present invention, reference will now be made to the following specific examples.

Example 1

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1 hour, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.4% of artemisinin, 3% of carbendazim, 606% of tween, 0.2% of sodium diacetate, 0.1% of phospholipid, 1% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 700rpm during the grinding treatment, the grinding time is 1h, and biomass powder is obtained for later use after the grinding treatment;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:70:120 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 80MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 4% of polyethylene glycol, 8% of sodium dodecyl benzene sulfonate, 5% of glycerol, 0.3% of polyvinylpyrrolidone, 0.3% of butyl titanate, 3% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 28% of epoxy resin, 30% of the mixture A obtained in the step (2), 405% of tween, 0.23% of silicon dioxide, 0.3% of potassium sorbate, 3% of xanthan gum, 4% of oleic acid, 0.3% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 250 ℃ during mixing treatment, controlling the mixing treatment time to be 20min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2 mu m during laser shock treatment, the pulse width is 30ns, and the laser shock power density is 3GW/cm²The energy is 12J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 2

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1.5h, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.5% of artemisinin, 3.5% of carbendazim, 608% of tween, 0.4% of sodium diacetate, 0.13% of phospholipid, 1.2% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 850rpm during the grinding treatment, and the grinding time is 1.5h, so that biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:80:130 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 90MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 5% of polyethylene glycol, 10% of sodium dodecyl benzene sulfonate, 7% of glycerol, 0.6% of polyvinylpyrrolidone, 0.45% of butyl titanate, 4% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing roll in sequence for mixing treatment, wherein the temperature in the mixing roll is controlled to be 260 ℃ during mixing treatment, and mixing positions are controlledThe processing time is 25min, the laser shock wave processing is carried out while the mixing processing is carried out, the wavelength of a laser is 2.5 mu m during the laser shock processing, the pulse width is 35ns, and the laser shock power density is 3.5GW/cm²The energy is 13J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 3

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 2 hours, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.6% of artemisinin, 4% of carbendazim, 0% of tween 6010%, 0.6% of sodium diacetate, 0.16% of phospholipid, 1.4% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 1000rpm during the grinding treatment, the grinding time is 2 hours, and biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:90:140 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 100MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 6% of polyethylene glycol, 12% of sodium dodecyl benzene sulfonate, 9% of glycerol, 0.9% of polyvinylpyrrolidone, 0.6% of butyl titanate, 5% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 32% of epoxy resin, 36% of the mixture A obtained in the step (2), 407% of tween, 0.27% of silicon dioxide, 0.7% of potassium sorbate, 6% of xanthan gum, 6% of oleic acid, 0.6% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 270 ℃ during mixing treatment, controlling the mixing treatment time to be 30min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 3 mu m during laser shock treatment, the pulse width is 40ns, and the laser shock power density is 4GW/cm²The energy is 14J, and after the completion, the mixed material is taken out for standby;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 4

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing a biomass raw material in a straw pulverizer for primary pulverization, and then placing the biomass raw material in liquid nitrogen for rapid cooling treatment;

b. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation a into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 850rpm during the grinding treatment, and the grinding time is 1.5h, so that biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:80:130 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 90MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 5% of polyethylene glycol, 10% of sodium dodecyl benzene sulfonate, 7% of glycerol, 0.6% of polyvinylpyrrolidone, 0.45% of butyl titanate, 4% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 260 ℃ during mixing treatment, controlling the mixing treatment time to be 25min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2.5 mu m during laser shock treatment, the pulse width is 35ns, and the laser shock power density is 3.5GW/cm²The energy is 13J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 5

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1.5h, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.5% of artemisinin, 3.5% of carbendazim, 608% of tween, 0.4% of sodium diacetate, 0.13% of phospholipid, 1.2% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a into a bead mill for grinding, wherein the rotating speed of the bead mill is controlled to be 850rpm during grinding, the grinding time is 1.5h, and biomass powder is obtained for later use after grinding;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:80:130 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 90MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 5% of polyethylene glycol, 10% of sodium dodecyl benzene sulfonate, 7% of glycerol, 0.6% of polyvinylpyrrolidone, 0.45% of butyl titanate, 4% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 260 ℃ during mixing treatment, controlling the mixing treatment time to be 25min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2.5 mu m during laser shock treatment, the pulse width is 35ns, and the laser shock power density is 3.5GW/cm²The energy is 13J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 6

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

placing the biomass raw material into a straw pulverizer for primary pulverization, then placing the raw material into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 850rpm during grinding treatment, the grinding time is 1.5h, and biomass powder is obtained for later use after finishing grinding treatment;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:80:130 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 90MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 5% of polyethylene glycol, 10% of sodium dodecyl benzene sulfonate, 7% of glycerol, 0.6% of polyvinylpyrrolidone, 0.45% of butyl titanate, 4% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 260 ℃ during mixing treatment, controlling the mixing treatment time to be 25min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2.5 mu m during laser shock treatment, the pulse width is 35ns, and the laser shock power density is 3.5GW/cm²The energy is 13J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 7

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1.5h, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.5% of artemisinin, 3.5% of carbendazim, 608% of tween, 0.4% of sodium diacetate, 0.13% of phospholipid, 1.2% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 850rpm during the grinding treatment, and the grinding time is 1.5h, so that biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and deionized water in a micro-jet high-pressure homogenizer together according to a weight ratio of 1:80:130 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 90MPa, and taking out a homogenized product for later use;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 260 ℃ during mixing treatment, controlling the mixing treatment time to be 25min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2.5 mu m during laser shock treatment, the pulse width is 35ns, and the laser shock power density is 3.5GW/cm²The energy is 13J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 8

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1.5h, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.5% of artemisinin, 3.5% of carbendazim, 608% of tween, 0.4% of sodium diacetate, 0.13% of phospholipid, 1.2% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 850rpm during the grinding treatment, and the grinding time is 1.5h, so that biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a stirring tank according to the weight ratio of 1:80:130, uniformly stirring, and taking out the mixture for later use; wherein the treating fluid B comprises the following components in percentage by weight: 5% of polyethylene glycol, 10% of sodium dodecyl benzene sulfonate, 7% of glycerol, 0.6% of polyvinylpyrrolidone, 0.45% of butyl titanate, 4% of titanate coupling agent and the balance of deionized water;

b. performing suction filtration on the mixture obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 260 ℃ during mixing treatment, controlling the mixing treatment time to be 25min, and performing laser shock wave treatment while mixing treatment, wherein the wavelength of a laser is 2.5 mu m during laser shock treatment, the pulse width is 35ns, and the laser shock power density is 3.5GW/cm²The energy is 13J, and the mixed material is taken out for standby after the completion;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Example 9

A processing method for enhancing the mechanical property of a wood-plastic profile by using alloy powder comprises the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1.5h, and filtering out for later use; the treating fluid A comprises the following components in percentage by weight: 0.5% of artemisinin, 3.5% of carbendazim, 608% of tween, 0.4% of sodium diacetate, 0.13% of phospholipid, 1.2% of ethylenediamine and the balance of 75% of ethanol;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cold treatment in the operation b into a bead mill for grinding treatment, wherein the rotating speed of the bead mill is controlled to be 850rpm during the grinding treatment, and the grinding time is 1.5h, so that biomass powder is obtained for later use;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B in a micro-jet high-pressure homogenizer together according to the weight ratio of 1:80:130 for high-pressure homogenization treatment, controlling the working pressure of the micro-jet high-pressure homogenizer to be 90MPa, and taking out a homogenized product for later use; wherein the treating fluid B comprises the following components in percentage by weight: 5% of polyethylene glycol, 10% of sodium dodecyl benzene sulfonate, 7% of glycerol, 0.6% of polyvinylpyrrolidone, 0.45% of butyl titanate, 4% of titanate coupling agent and the balance of deionized water;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 30% of epoxy resin, 33% of the mixture A obtained in the step (2), 406% of tween, 0.25% of silicon dioxide, 0.5% of potassium sorbate, 4.5% of xanthan gum, 5% of oleic acid, 0.45% of diisobutyl phthalate and the balance of ionized water for later use;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, controlling the temperature in the mixing mill to be 260 ℃ during mixing treatment, and taking out the mixed materials for later use after mixing treatment is finished, wherein the mixing treatment time is 25 min;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

Control group

The application numbers are: CN202010647042.X discloses a preparation method of an alloy wood-plastic section. Reference is made in detail to the method of this invention in its detailed description section example 2.

In order to compare the effects of the invention, the wood-plastic section bars are correspondingly prepared by the methods of the above embodiment 2, embodiments 4-9 and the comparison group respectively, and then the bending strength of each group of test pieces is tested by referring to the method of GB/T9341-; testing the tensile strength of each group of test pieces by referring to the method of GB/T1040-2006, wherein the testing speed is 10 mm/min; the notched impact strength of each group of test pieces was tested according to the method of GB/T1843-2008, and the energy of the impact pendulum is 1075J. The specific experimental comparative data are shown in the following table 1:

TABLE 1

	Flexural Strength (MPa)	Tensile Strength (MPa)	Impact Strength (kJ. m)-2）
				Example 2	74.9	78.0	45.3
Example 4	69.6	65.4	43.5
				Example 5	73.2	76.4	40.6
Example 6	57.6	64.3	29.8
				Example 7	68.5	72.5	39.5
Example 8	73.4	74.5	42.4
				Example 9	69.9	73.4	36.4
Control group	75.6	56.3	28.5

As can be seen from table 1 above, the invention provides a processing method for enhancing the mechanical properties of a wood-plastic profile by using alloy powder, aiming at the processing characteristics of raw materials, the raw materials are processed and then mixed in a scientific and appropriate manner, so that the mechanical properties of the finally prepared wood-plastic profile are remarkably improved, the values of biomass materials, plastics and alloys are improved to a certain extent, and the application value of resources is improved.

Claims (7)

1. A processing method for reinforcing mechanical property of wood-plastic sectional material by using alloy powder is characterized by comprising the following steps:

(1) treatment of the wood material:

a. placing the biomass raw material into a straw crusher for primary crushing, soaking the biomass raw material into the treatment solution A, soaking for 1-2 hours, and filtering out for later use;

b. b, placing the biomass raw material soaked in the operation a in liquid nitrogen for rapid cooling treatment;

c. b, placing the biomass raw material subjected to the medium-speed cooling treatment in the operation b into a bead mill for grinding treatment, and obtaining biomass powder for later use after finishing the grinding treatment;

(2) dynamic micro-jet high-pressure homogenization treatment:

a. placing the alloy powder, the biomass powder obtained in the step (1) and the treatment liquid B together in a micro-jet high-pressure homogenizer according to the weight ratio of 1: 70-90: 120-140 for high-pressure homogenization treatment, and taking out a homogenized product for later use;

b. c, performing suction filtration on the homogeneous product obtained in the operation a, and drying to obtain a mixture A for later use;

(3) weighing raw materials:

weighing 28-32% of epoxy resin, 30-36% of the mixture A obtained in the step (2), 405-7% of tween, 0.23-0.27% of silicon dioxide, 0.3-0.7% of potassium sorbate, 3-6% of xanthan gum, 4-6% of oleic acid, 0.3-0.6% of diisobutyl phthalate and the balance of ionized water for later use in a corresponding weight percentage manner;

(4) mixing treatment:

putting all the raw materials weighed in the step (3) into a mixing mill in sequence for mixing treatment, performing laser shock wave treatment while mixing treatment, and taking out the mixed materials for later use;

(5) injection molding:

and (4) rolling, cooling and cutting the mixed material obtained in the step (4), and then placing the mixed material into a plastic machine for injection molding.

2. The processing method for enhancing mechanical properties of wood-plastic profiles by using alloy powder as claimed in claim 1, wherein the treating fluid A in the operation a of the step (1) comprises the following components in percentage by weight: 0.4-0.6% of artemisinin, 3-4% of carbendazim, 606-10% of tween, 0.2-0.6% of sodium diacetate, 0.1-0.16% of phospholipid, 1-1.4% of ethylenediamine and the balance of 75% of ethanol.

3. The processing method for enhancing mechanical properties of wood-plastic profiles by using alloy powder as claimed in claim 1, wherein the rotation speed of the bead mill is controlled to be 700-1000 rpm during the grinding process in operation c of step (1), and the grinding time is 1-2 h.

4. The processing method for enhancing mechanical properties of wood-plastic profiles by using alloy powder as claimed in claim 1, wherein the treating fluid B in the operation a of the step (2) comprises the following components in percentage by weight: 4-6% of polyethylene glycol, 8-12% of sodium dodecyl benzene sulfonate, 5-9% of glycerol, 0.3-0.9% of polyvinylpyrrolidone, 0.3-0.6% of butyl titanate, 3-5% of titanate coupling agent and the balance of deionized water.

5. The processing method for enhancing mechanical properties of wood-plastic profiles by using alloy powder as claimed in claim 1, wherein the working pressure of the micro-jet high-pressure homogenizer in the step (2) is controlled to be 80-100 MPa during the high-pressure homogenizing treatment.

6. The processing method for enhancing mechanical properties of wood-plastic profiles by using alloy powder as claimed in claim 1, wherein the temperature in the mixer is controlled to be 250-270 ℃ during the mixing process in step (4), and the mixing process time is controlled to be 20-30 min.

7. The processing method for enhancing mechanical properties of wood-plastic profiles by using alloy powder as claimed in claim 1, wherein the laser in the step (4) has a wavelength of 2-3 μm, a pulse width of 30-40 ns, and a laser impact power density of 3-4 GW/cm²The energy is 12-14J.