CN111349336A

CN111349336A - Low-odor glass fiber reinforced nylon modified material and preparation method thereof

Info

Publication number: CN111349336A
Application number: CN202010348953.2A
Authority: CN
Inventors: 薛东
Original assignee: Jiangyin Hongfeng Plastic Industry Co ltd
Current assignee: Jiangyin Hongfeng Plastic Industry Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-06-30

Abstract

The invention relates to a low-odor glass fiber reinforced nylon modified material which is mainly prepared from the following raw materials in parts by weight: 60-80% of PA6 slice, 20-40% of glass fiber, 0.1-0.2% of auxiliary agent and 1.0-2.0% of carbon powder, wherein the carbon powder is used as black master batch and odor adsorbent, and the carbon powder is preferably used as ink carbon powder, has finer fineness and larger specific surface area. The PA6 slice in the raw material has relative viscosity of 2.37-2.47 and water content of 0.25-0.5%. The length of the glass fiber in the raw material is 3.0 +/-1.0 mm. On one hand, the carbon powder is added to the components as an adsorbent, and the huge specific surface area of the carbon powder is utilized to physically adsorb odor; on the other hand, the reduction of residual monomers and oligomers is a consideration in the production process.

Description

Low-odor glass fiber reinforced nylon modified material and preparation method thereof

Technical Field

The invention relates to a nylon material, in particular to a nylon material modified by glass fiber for reinforcing purpose, more particularly to nylon 6(PA6) granules.

Background

Nylon (PA) is also called polyamide, and nylon 6(PA6) is a polymer with excellent comprehensive properties, has the advantages of excellent mechanical properties, excellent solvent resistance, oil resistance and the like, and is widely applied to the automobile industry. However, PA6 remains with monomers and oligomers during polymerization, which leads to easy monomer and oligomer precipitation during processing. Therefore, the PA6 matrix modified material used as an interior trim part in the automobile industry has the problem of big smell.

Publication No. CN101314672A discloses a high-gloss, low-odor and reinforced nylon composite material and a preparation method thereof, wherein the composite material comprises the following components in percentage by weight: PA66 resin, PA6 resin, glass fiber, inorganic mineral, micro-beads, compatilizer, antioxidant, lubricant and the like. Mixing the raw materials in a high-speed mixer; discharging; and (4) granulating. The PA composite material prepared by the method has the advantages of high glossiness, good strength, low odor and the like. 1. The glass fiber and mineral reinforced nylon material are added with micro-beads, barium sulfate and the like, so that the surface of the product is smooth and bright, and the processing performance is improved. 2. The addition of zinc sulfide, maleic anhydride graft and lubricant to glass fiber and mineral reinforced nylon material reduces the odor emitted during processing. 3. The glass fiber and the inorganic mineral are used as the filler, the two fillers complement each other, and the material shows excellent comprehensive performance.

Publication No. CN102558839A discloses a low-odor antistatic red phosphorus flame-retardant thermoplastic composition and a preparation method thereof, wherein the composition is prepared from the following raw materials: 40-60% of nylon resin; 5-10% of microcapsule red phosphorus master batch; 3-8% of a compatilizer; 5-40% of a filler; 1-5% of modified activated zeolite powder; 0.5-2% of nano magnesium hydroxide; 0-5% of other additives. The modified activated zeolite powder is activated by natural zeolite powder and modified by a cationic surfactant. According to the invention, the modified activated zeolite powder is added on the basis of the basic formula of the red phosphorus flame-retardant thermoplastic composition, so that the red phosphorus flame-retardant thermoplastic composition with low odor, antistatic property and high stability is prepared, and meanwhile, a certain antibacterial effect is achieved; the thermoplastic composition can be made into various sample pieces by extrusion molding, and is suitable for underground coal mine equipment, textile equipment and medical and health instruments.

The publication No. CN109666216A discloses a long glass fiber reinforced polypropylene/polyamide alloy material with high strength and low odor and a preparation method thereof, wherein the alloy material is prepared from the following components in parts by weight: 20-65 parts of nylon 6 or nylon 66, 5-25 parts of polyamide, 20-60 parts of continuous glass fiber, 1-3 parts of maleic anhydride compatilizer, 1-15 parts of long-chain polyamide, 0.5-1.5 parts of color master batch, 0.2-0.6 part of antioxidant and 0.1-0.5 part of cross-linking agent; the long glass fiber reinforced polypropylene/polyamide alloy material disclosed by the invention has the smell reduced by 0.5-1 grade according to the detection of the popular smell standard. In the alloy composite material, a resin alloy system with good compatibility can be obtained by limiting the special proportion of polypropylene and polyamide, and the long-chain polyamide is added in the formula of the alloy composite material, so that the using amount of a compatilizer can be effectively reduced, and the smell of the product is improved.

Publication No. CN110655781A discloses a low-odor and high-wear-resistance nylon material and a preparation method thereof, wherein the low-odor and high-wear-resistance nylon material comprises the following components: nylon 6, nylon 1010, POE grafted maleic anhydride, poly-p-benzamide modified glass fiber, odor adsorption master batch, a mixture of silicon nitride and silicon carbide, a lubricant and an antioxidant; the odor and the diffusion characteristic of the material can be obviously improved by adding the odor adsorption master batch, so that the TVOC of the nylon 6 composition is lower than 40 mu gC/g. The odor adsorption master batch comprises the following components: nylon 66100 parts, hydrophobic diatomite 5 parts, hydrophobic active carbon 5 parts, needle zeolite molecular sieve 5 parts, zinc ricinoleate 5 parts, nano silicon dioxide 5 parts, calcium stearate 1 part, and melamine 5 parts. The odor adsorption master batch disclosed by the document uses nylon as a matrix, so that the compatibility of the odor adsorption master batch with fibers and nylon 66 is improved, and the dispersibility of the master batch in a composition system is ensured.

At present, the technicians in the field still inhibit the odor source mainly through the compatibility of raw materials, some need to add inorganic fillers such as minerals, microbeads, zeolite molecular sieves and carbon powder in the nylon base material, or add organic additives which are helpful for polymerizing or enlarging molecular chains, and the addition of the additives or the additives of the components can affect the physical properties of the nylon material more or less, and even affect the original application of the material.

Disclosure of Invention

The invention aims to provide a preparation method of a low-odor glass fiber reinforced nylon material in view of the prior art, and more specifically relates to a method for producing low-odor glass fiber reinforced modified PA 6: on one hand, carbon powder is added to the components as an adsorbent, and the odor is physically adsorbed by utilizing the huge specific surface area of the carbon powder; on the other hand, the reduction of residual monomers and oligomers is considered from the viewpoint of the production process.

The technical scheme adopted by the invention for solving the problems is as follows: the low-odor glass fiber reinforced nylon modified material is mainly prepared from the following raw materials in parts by weight:

60 to 80 percent of PA6 slices,

20 to 40 percent of glass fiber,

0.1 to 0.2 percent of auxiliary agent,

carbon powder 1.0-2.0 wt%,

the carbon powder is used as a black master batch and an odor adsorbent, and is preferably used for ink, and has finer fineness and larger specific surface area. The PA6 slice in the raw material has relative viscosity of 2.37-2.47 and water content of 0.25-0.5%. The length of the glass fiber in the raw material is 3.0 +/-1.0 mm.

The auxiliary agent is selected from one or more of an antioxidant, a lubricant and a catalyst.

The core of the invention is a preparation method of a low-odor glass fiber reinforced nylon modified material, which comprises the following steps:

(1) immersing the glass fiber in an aminosilane coupling agent dispersion liquid;

(2) mixing PA6 slices, an auxiliary agent and carbon powder, adding the mixture into a polymerization autoclave from a main material port, filtering the dispersion system obtained in the step (1), adding filter residues (glass fibers modified by an aminosilane coupling agent) into the polymerization autoclave, simultaneously adding deionized water accounting for 0.8-2% of the PA6 content, sealing the reactor, carrying out pressurized reaction for 3-7h, wherein the reaction pressure is 6-12MPa, the reaction temperature is 200-280 ℃, discharging after the reaction is finished, and drying the materials at 60-80 ℃ for more than 2 hours;

(3) transferring the reaction material in the step (2) to another polymerization reactorVacuumizing to reduce pressure, and pumping to 1 × 10³Heating after Pa is lower than Pa, setting the reaction temperature at 160-220 ℃, starting cooling to maintain the reaction temperature, reacting for 8-12h, discharging the melt through a screw, extruding the melt through a strand casting head, cooling and granulating the melt in a cooling bath, and feeding the melt into a high-temperature extraction elevator at 80-100 ℃;

(4) drying the granules obtained in the step (3) in a vacuum oven, feeding the materials into a double-screw extruder, starting a vacuum pump of the extruder, arranging a film former on the upper part of a charging barrel, and setting the temperature of the double-screw extruder as a first area: 250-270 ℃, the temperature of the second zone is 250-270 ℃, the temperature of the third zone is 240-260 ℃, the temperature of the fourth zone is 230-250 ℃, the temperature of the fifth zone is 220-240 ℃, the temperature of the sixth zone is 220-240 ℃, the temperature of the seventh zone is 220-240 ℃, the temperature of the eighth zone is 220-240 ℃ and the temperature of the ninth zone is 230-250 ℃;

(5) the extruder is discharged, enters a cooling water tank at 20-30 ℃, enters a granulator with the rotating speed of 700 plus materials of 1200r/min, is screened by a vibrating screen, enters a high-temperature extraction hoister at 80-100 ℃, and finally enters a homogenizing silo.

Preferably, the wetting dispersant is aminoethylaminopropyltrimethoxysilane, a KH550 silane coupling agent, a KH560 silane coupling agent and a KH570 silane coupling agent. The effect of aminoethyl aminopropyl trimethoxy silane is particularly good among these aminosilane coupling agents.

The application is modified to the fine grafting of glass through aminosilane coupling agent, need not to dry after filtering, mixes with PA6, and modified glass is hydrophilicity. During the first polymerization reaction, partial low polymer and PA monomer remained in the PA6 slice are added with polymer to extend the chain of the polymer, the low polymer and PA monomer which do not participate in the addition react with ring opening under the hydrolysis action, the ring opening of the monomer becomes aminocaproic acid, the general residual low polymer is mainly cyclic dimer, the ring opening of the cyclic dimer becomes carboxyl terminated dimer, the glass fiber is modified by hydrophilicity, the glass fiber homogenizes compatible water into the PA matrix through melting and mixing action, and the ring opening of the low polymer and the monomer in the PA matrix is promoted as much as possible.

It is evident that the first polymerization increases the water content of the PA matrix, with water contents of 1.2-2.1%, with a significant increase compared to PA slices. In order to promote the polycondensation reaction, the second polymerization reaction needs to pay attention to reducing the reaction temperature, vacuumizing, prolonging the reaction time, increasing the viscosity in the reaction process, continuously vacuumizing a reaction system, continuously separating out the water vapor in the system, and carrying out odor to realize the first deodorization.

And extruding and granulating through a casting belt head after the second polymerization reaction, and immediately performing high-temperature extraction treatment to remove precipitates so as to realize secondary deodorization. The third polymerization is realized by a double-screw extruder, and the vacuum pumping and the film forming device are combined to further remove the water in the polymerization system, and the high-temperature extraction treatment is carried out again after the granulation.

Drawings

FIG. 1 is a schematic diagram of a dry devolatilizer as contemplated in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure of a devolatilizer as contemplated in an embodiment of the present invention;

in the attached drawing, 1-devolatilization and deodorization device, 2-spiral elevator, 101-devolatilization and deodorization cylinder, 102-heating cylinder, 103-waste heat recovery cylinder, 104-support, 105-air outlet pipe, 106-blower, 107-air inlet pipe, 108-fixed table, 109-upright post, 110-heater, 111-discharge pipe, 112-flow valve, 113-support, 114-motor, 115-rotating shaft, 116-first carbon adsorption cylinder, 117-second carbon adsorption cylinder, 201-feed pipe, 202-first inclined pipe, 203-second inclined pipe, 204-table body, and 205-support leg.

Detailed Description

The present invention is described in further detail below with reference to examples, which are intended to be illustrative and not to be construed as limiting the invention.

Example 1

The preparation of the modified nylon material is carried out according to the following steps

(1) Preparing raw materials:

the PA6 is sliced into 70 percent,

28 percent of modified glass fiber,

0.2 percent of silicon carbide lubricant,

1.8 percent of carbon powder,

the average molecular weight of the PA6 chip is 8000-20000, and the water content is 0.32%.

The length of the glass fiber is 3.0 plus or minus 1.0mm, the glass fiber is soaked in the water solution of the aminoethyl aminopropyl trimethoxy silane, and the soaking is carried out for 48 hours, the filter residue is filtered and dried for standby.

(2) Mixing PA6 slices, an auxiliary agent, carbon powder and modified glass fiber, adding the mixture into a polymerization high-pressure device from a main material port, simultaneously adding deionized water accounting for 1 percent of the content of PA6, sealing the reactor, carrying out pressurized reaction for 6 hours at the reaction pressure of 7-8MPa and the reaction temperature of 240-.

(3) Transferring the reaction material in the step (2) into another polymerization reactor, starting a vacuum pump to vacuumize and reduce the pressure, and pumping the pressure to 1 × 10³Heating after Pa is lower than the temperature, setting the reaction temperature of 180-200 ℃, starting a water cooling device after the temperature is reached, maintaining the reaction temperature, reacting for 10 hours, selecting a screw for discharging from a discharge port of the polymerization reactor, extruding the melt through the screw, extruding through a strand casting head, cooling and granulating in a cooling bath, extracting the granules at the high temperature of 80-100 ℃, and removing precipitates.

(4) Drying the granules obtained in the step (3) in a vacuum drying oven at the drying temperature of 100-: 250-270 ℃, the temperature of the second zone is 250-270 ℃, the temperature of the third zone is 240-260 ℃, the temperature of the fourth zone is 230-250 ℃, the temperature of the fifth zone is 220-240 ℃, the temperature of the sixth zone is 220-240 ℃, the temperature of the seventh zone is 220-240 ℃, the temperature of the eighth zone is 220-240 ℃ and the temperature of the ninth zone is 230-250 ℃;

(5) cooling the material discharged by the extruder through a cooling water tank at 20-30 ℃, feeding the material into a granulator with the rotating speed of 700 plus 1200r/min, screening the material through a vibrating screen, and performing high-temperature steam extraction at 80-100 ℃;

(6) drying and devolatilizing the granules.

Example 2

(1) Preparing raw materials:

the PA6 is cut into 65 percent,

32 percent of modified glass fiber,

10100.2 percent of antioxidant,

1.8 percent of carbon powder,

The length of the glass fiber is 3.0 plus or minus 1.0mm, and the glass fiber is soaked in the water solution of the aminoethyl aminopropyl trimethoxy silane for 48 hours, filtered and dried. (ii) a

(2) Mixing PA6 slices, an auxiliary agent and carbon powder, adding the mixture into a polymerization autoclave from a main material port, filtering the dispersion system obtained in the step (1), adding filter residues into the polymerization autoclave, simultaneously adding deionized water accounting for 0.8-2% of PA6 content, sealing the reactor, performing pressurized reaction for 3-7 hours at the reaction pressure of 10-12MPa and the reaction temperature of 200-280 ℃, discharging the mixture after the reaction is finished, and drying the mixture at the temperature of 60-80 ℃ for more than 2 hours;

(3) transferring the reaction material in the step (2) into another polymerization reactor, vacuumizing and depressurizing, and pumping the pressure to 1 × 10³Heating after Pa is lower than Pa, setting the reaction temperature at 160-220 ℃, starting cooling to maintain the reaction temperature, reacting for 12h, discharging the melt through a screw, extruding the melt through a strand casting head, cooling and granulating the melt in a cooling bath, and extracting and lifting the granules at the high temperature of 80-100 ℃;

(6) drying and devolatilizing the granules.

Example 3

(1) Preparing raw materials:

78% of PA6 slices,

20 percent of modified glass fiber,

10100.2 percent of antioxidant,

0.02 percent of zinc oxide

1.6 percent of carbon powder,

(2) Mixing PA6 slices, an auxiliary agent and carbon powder, adding the mixture into a polymerization autoclave from a main material port, filtering the dispersion system obtained in the step (1), adding filter residues into the polymerization autoclave, simultaneously adding deionized water accounting for 1.2% of PA6 content, sealing the reactor, carrying out pressurized reaction for 7 hours, wherein the reaction pressure is 6-9MPa, the reaction temperature is 260-280 ℃, discharging the mixture after the reaction is finished, and drying the mixture at 60-80 ℃ for more than 2 hours;

(3) transferring the reaction material in the step (2) into another polymerization reactor, vacuumizing and depressurizing, and pumping the pressure to 1 × 10³Heating after Pa is lower than Pa, setting the reaction temperature at 160-;

(5) the extruder is discharged and then enters a cooling water tank at 20-30 ℃ for cooling, and then enters a granulator with the rotation speed of 700 plus materials of 1200r/min, and after screening through a vibrating screen, high-temperature steam extraction at 80-100 ℃ is carried out;

(6) drying and devolatilizing the granules.

The results of measuring physical properties of examples 1 to 3 were as follows:

the results of the odor tests of examples 1-3 are as follows:

	wet state (23 ℃, 24h)	Wet state (40 ℃, 24h)	Dry state (80 ℃, 24h)
				Example 1	2.0	2.5	3.0
Example 2	2.0	2.5	3.0
				Example 3	2.0	3.0	3.5
Odor grade	2.0	2.5	3.0
				Require that	≤3.0	≤3.0	≤3.5

Odor grade comparison table

Grade	Evaluation criteria
		1.0	No detectable odor
2.0	Perceptible, non-unpleasant odor
		3.0	Clear and identifiable, and no unpleasant smell
4.0	Unpleasant smell
		5.0	Bad smell of severe discomfort
6.0	Intolerable odor

The drying and devolatilization of the pellets is accomplished on a machine, the structure of which is described below

A drying, devolatilization and odor removal machine for nylon modified material production comprises a devolatilization and odor removal device 1 and a spiral elevator 2, wherein the devolatilization and odor removal device 1 comprises a devolatilization and odor removal cylinder 101, the bottom of the devolatilization and odor removal cylinder 101 is fixedly communicated with a heating cylinder 102, and the bottom of the heating cylinder 102 is fixedly communicated with a waste heat recovery cylinder 103;

a feeding pipe 201 is fixedly communicated with the peripheral side face of the bottom of the spiral elevator 2, a first inclined pipe 202 is fixedly communicated between the peripheral side face of the top of the spiral elevator 2 and the top of the devolatilization and deodorization barrel 101, a second inclined pipe 203 is fixedly communicated between the peripheral side face of the waste heat recovery barrel 103 and the peripheral side face of the bottom of the spiral elevator 2, the spiral elevator 2 comprises a shell, a driving motor is fixed at the top of the shell, one end of an output shaft of the driving motor penetrates through the top of the shell and is fixedly provided with a spiral auger, the bottom end of the spiral auger is rotatably connected with the bottom of the shell through a bearing, and the driving motor drives;

a bracket 104 is fixed on the peripheral side surface of the devolatilization and odor removal cylinder 101, an air outlet pipe 105 is fixed on the top of the devolatilization and odor removal cylinder 101, a blower 106 is fixed on the bottom of one side of the bracket 104, an air outlet of the blower 106 is fixedly communicated with an air inlet pipe 107, and one end of the air inlet pipe 107 is fixedly communicated with one side of the waste heat recovery cylinder 103;

the top of the devolatilization deodorizing cylinder 101 is fixed with a support 113, the top surface of the support 113 is fixed with a motor 114, one end of the output shaft of the motor 114 penetrates through the first inclined tube 202 and the top of the devolatilization deodorizing cylinder 101 and is fixed with a rotating shaft 115, the peripheral side surface of the rotating shaft 115 is fixedly sleeved with a first carbon adsorption cylinder 116, and the inner wall of the devolatilization deodorizing cylinder 101 is fixed with a second carbon adsorption cylinder 117.

As shown in fig. 1, a table 204 is fixed to the bottom peripheral side of the screw elevator 2, and a plurality of legs 205 are fixed to the bottom of the table 204.

As shown in FIGS. 1-2, the bracket 104 comprises a fixing base 108, the fixing base 108 is fixed on the peripheral side of the devolatilization and deodorization barrel 101, and a plurality of upright posts 109 are fixed at the bottom of the fixing base 108 in a rectangular shape.

As shown in fig. 1-2, a heater 110 is fixed on the circumferential side of the heating cylinder 102, and the heating end of the heater 110 is located inside the heating cylinder 102.

As shown in FIGS. 1-2, the bottom of the waste heat recovery cylinder 103 is fixedly communicated with a discharge pipe 111, and the discharge pipe 111 is provided with a flow valve 112.

Wherein, 2 week sides of devolatilizing odor removal cylinder 101, waste heat recovery cylinder 103, heating cylinder 102, first pipe chute 202, second pipe chute 203 and screw elevator all wrap up and are fixed with the rock wool layer, and the rock wool layer outside is fixed with the steel bushing.

As shown in FIG. 2, the connecting end of the first inclined tube 202 and the devolatilization deodorizing cylinder 101 is arranged concentrically with the devolatilization deodorizing cylinder 101, the rotating shaft 115 is arranged at the axle center of the first inclined tube 202 and the devolatilization deodorizing cylinder 101, and the diameter of the rotating shaft 115 is half of the diameter of the first inclined tube 202.

The devolatilization odor removal machine has the working principle that: the material is discharged into screw elevator 2 through inlet pipe 201, screw elevator 2 operation drives the material spiral of screw elevator 2 bottom and upwards carries, the material that screw elevator 2 promoted is through first pipe chute 202 from bottom to top progressively pile up waste heat recovery section of thick bamboo 103, cartridge heater 102 and devolatilization remove flavor section of thick bamboo 101, motor 114 drives pivot 115 and first carbon adsorption section of thick bamboo 116 and rotates, use with second carbon adsorption section of thick bamboo 117 cooperation and realize the efficient and remove flavor, control the even ejection of compact of discharging pipe 111 through flow valve 112, blower 106 blows simultaneously and gets into waste heat recovery section of thick bamboo 103, some gas passes cartridge heater 102 and takes a large amount of heats in waste heat recovery section of thick bamboo 103 and the cartridge heater 102 to devolatilization section of thick bamboo 101 in, can devolatilize and remove flavor, another part gas simultaneously takes hot material to flow back to screw elevator 2 bottom through second pipe chute 203 with certain proportion.

Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The low-odor glass fiber reinforced nylon modified material is characterized in that: the material is mainly prepared from the following raw materials in parts by weight:

the carbon powder is used as black master batch and odor adsorbent.

2. The low-odor glass fiber reinforced nylon modified material as claimed in claim 1, wherein: the water content of PA6 in the raw material is 0.25-0.5%.

3. The low-odor glass fiber reinforced nylon modified material as claimed in claim 1, wherein: the length of the glass fiber in the raw material is 3.0 +/-1.0 mm.

4. The low-odor glass fiber reinforced nylon modified material as claimed in claim 1, wherein: the auxiliary agent is selected from one or more of an antioxidant, a lubricant and a catalyst.

5. A method for preparing the low-odor glass fiber reinforced nylon modified material of claim 1, which is characterized by comprising the following steps: the method comprises the following steps:

(2) mixing PA6 slices, an auxiliary agent and carbon powder, adding the mixture into a polymerization autoclave from a main material port, filtering the dispersion system obtained in the step (1), adding filter residues into the polymerization autoclave, simultaneously adding deionized water accounting for 0.8-2% of PA6 content, sealing the reactor, performing pressurized reaction for 3-7 hours at the reaction pressure of 6-12MPa and the reaction temperature of 200-280 ℃, discharging the mixture after the reaction is finished, and drying the mixture at the temperature of 60-80 ℃ for more than 2 hours;

(3) transferring the reaction material in the step (2) into another polymerization reactor, vacuumizing and depressurizing, and pumping the pressure to 1 × 10³Starting to raise the temperature after Pa is less thanPlacing the mixture at a reaction temperature of 160 ℃ and 220 ℃, starting cooling to maintain the reaction temperature, reacting for 8-12h, discharging the melt through a screw, extruding the melt through a strand casting head, cooling and pelletizing the melt in a cooling bath, and extracting and lifting the pellets at a high temperature of 80-100 ℃;

(5) after being discharged by the extruder, the material enters a cooling water tank at 20-30 ℃, then enters a granulator with the rotating speed of 700 plus materials of 1200r/min, is screened by a vibrating screen, and is subjected to high-temperature steam extraction at 80-100 ℃;

(6) drying and devolatilizing the granules.

6. The method of claim 5, wherein the method comprises the following steps: the wetting dispersant is aminoethylaminopropyltrimethoxysilane, a KH550 silane coupling agent, a KH560 silane coupling agent and a KH570 silane coupling agent.

7. The method of claim 5, wherein the method comprises the following steps: granule drying takes off and volatilizees and removes the flavor machine to accomplish through drying takes off, drying takes off and volatilizees the flavor machine and removes flavor machine including taking off and volatilize odour removal device (1), take off and volatilize odour removal device (1) including taking off and volatilizing a flavor section of thick bamboo (101), take off and volatilize the fixed intercommunication in flavor section of thick bamboo (101) bottom and have cartridge heater (102), cartridge heater (102) bottom fixed intercommunication has waste heat recovery section of thick bamboo (103), its characterized in that: the device also comprises a spiral elevator (2); a feeding pipe (201) is fixedly communicated with the peripheral side surface of the bottom of the spiral elevator (2), a first inclined pipe (202) is fixedly communicated between the peripheral side surface of the top of the spiral elevator (2) and the top of the devolatilization and odor removal barrel (101), and a second inclined pipe (203) is fixedly communicated between the peripheral side surface of the waste heat recovery barrel (103) and the peripheral side surface of the bottom of the spiral elevator (2); a support (104) is fixed on the peripheral side surface of the devolatilization and odor removal cylinder (101), an air outlet pipe (105) is fixed on the top of the devolatilization and odor removal cylinder (101), an air blower (106) is fixed at the bottom of one side of the support (104), an air outlet of the air blower (106) is fixedly communicated with an air inlet pipe (107), and one end of the air inlet pipe (107) is fixedly communicated with one side of the waste heat recovery cylinder (103); the top of the devolatilization deodorizing cylinder (101) is fixed with a support (113), the top surface of the support (113) is fixed with a motor (114), one end of an output shaft of the motor (114) runs through a first inclined tube (202) and the devolatilization deodorizing cylinder (101) top and is fixed with a rotating shaft (115), the side surface of the rotating shaft (115) is sleeved and fixed with a first carbon adsorption cylinder (116), and the inner wall of the devolatilization deodorizing cylinder (101) is fixed with a second carbon adsorption cylinder (117).

8. The method of claim 7, wherein the method comprises the following steps: a table body (204) is fixed on the peripheral side face of the bottom of the spiral elevator (2), and a plurality of supporting legs (205) are fixed at the bottom of the table body (204).

9. The method of claim 7, wherein the method comprises the following steps: the support (104) comprises a fixed platform (108), the fixed platform (108) is fixed on the peripheral side surface of the devolatilizing and deodorizing cylinder (101), and the bottom of the fixed platform (108) is fixed with a plurality of upright posts (109) in a rectangular shape.

10. The method of claim 7, wherein the method comprises the following steps: a heater (110) is fixed on the peripheral side surface of the heating cylinder (102), and the heating end of the heater (110) is positioned in the heating cylinder (102); the bottom of the waste heat recovery barrel (103) is fixedly communicated with a discharge pipe (111), and a flow valve (112) is arranged on the discharge pipe (111).