CN109135263A - A kind of preparation method of counter-bending polyamide for automobile interiors - Google Patents

A kind of preparation method of counter-bending polyamide for automobile interiors Download PDF

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CN109135263A
CN109135263A CN201810783514.7A CN201810783514A CN109135263A CN 109135263 A CN109135263 A CN 109135263A CN 201810783514 A CN201810783514 A CN 201810783514A CN 109135263 A CN109135263 A CN 109135263A
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stirring
added
polyamide
bending
counter
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刘仕明
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Quanjiang Auspicious Sign Plastic Cement Co Ltd
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Quanjiang Auspicious Sign Plastic Cement Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
    • C08G12/32—Melamines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/40—Chemically modified polycondensates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of preparation methods of counter-bending polyamide for automobile interiors, comprising: is uniformly mixed collagen, formalin, sodium hydroxide stirring is added, melamine stirring is added, silicon powder, citric acid is added in heating stirring, temperature adjustment stirring, toluene is added in filtering, acrylic acid is uniformly mixed, N is added, dinethylformamide, ammonium persulfate, temperature adjustment stirring, washing, it dry, pulverize to obtain silicon powder compound；Polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate are mixed, heating stirs to get premix；The extrusions such as premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder compound, talcum powder, medical stone powder, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil are obtained into extruded stock；Dry, the injection molding by extruded stock, cooling obtain counter-bending polyamide for automobile interiors.

Description

A kind of preparation method of counter-bending polyamide for automobile interiors
Technical field
The present invention relates to technical field of automotive trim, more particularly to a kind of system of counter-bending polyamide for automobile interiors Preparation Method.
Background technique
Polyamide is a kind of engineering plastics of function admirable, heat resistance, electric insulating quality and ruler with higher Very little stability, but polyamide is also easy to produce stress cracking, improves a kind of universal method of polyamide material stress performance, is logical It crosses and polyamide enhance using fiber, whisker, inorganic filler etc. composite modified, reinforced polyamide composite material is made, this Sample can increase substantially the performances such as the intensity of polyamide material, rigidity, creep resistance, heat-resisting, improve stress cracking, but exist and draw Stretch the technical problem of intensity and bending strength difference, it would be highly desirable to solve.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of counter-bending polyamides for automobile interiors Preparation method, gained polyamide has excellent tensile strength, and bending strength is high.
The preparation method of one kind counter-bending polyamide for automobile interiors proposed by the present invention, includes the following steps:
S1, collagen, formalin are uniformly mixed, sodium hydroxide stirring is added, melamine stirring, heating is added Silicon powder, citric acid is added in stirring, and adjusting temperature stirring, toluene is added in filtering, acrylic acid is uniformly mixed, addition N, N- diformazan Base formamide, ammonium persulfate, adjust temperature stirring, and washing dry, pulverize to obtain silicon powder compound；
S2, polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate are mixed, heating Stir to get premix；
S3, by premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder compound, talcum Powder, medical stone powder, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil, 4- cumylphenol, bis- (tertiary fourths of 3,5- bis- Base -4- hydroxybenzyl) thioether squeezes out to obtain extruded stock；
S4, extruded stock is dry, injection molding, it is cooling to obtain counter-bending polyamide for automobile interiors.
Preferably, in S1, formalin concentration is 16-22wt%, collagen, formalin, sodium hydroxide, melamine Amine, silicon powder, citric acid, toluene, acrylic acid, N,N-dimethylformamide, ammonium persulfate weight ratio be 8-16:120-140: 3-5:20-30:8-16:14-20:100-140:4-8:2-4:1-2.
Preferably, in S1, collagen, formalin are uniformly mixed, sodium hydroxide is added and stirs 30-50min, is added Melamine stirs 15-25min, is warming up to 78-82 DEG C of stirring 50-70min, and silicon powder, citric acid is added, adjusts the temperature to 70-90 DEG C of stirring 30-50min, toluene is added in filtering, acrylic acid is uniformly mixed, addition n,N-Dimethylformamide, persulfuric acid Ammonium is adjusted the temperature to 65-75 DEG C of stirring 30-50min, is washed using formalin, 120-140 DEG C dry, pulverize to obtain silicon it is micro- Flour complexes.
Preferably, in S2, polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate Weight ratio is 80-120:30-50:2-4:2-4.
Preferably, in S2, by polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate Mixing, is warming up to 120-140 DEG C of stirring 20-30min, obtains premix.
Preferably, in S3, premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder are compound Object, talcum powder, medical stone powder, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil, 4- cumylphenol, bis- (3,5- Di-tert-butyl-4-hydroxyl benzyl) thioether weight ratio be 120-140:1.5-2.5:0.2-0.4:15-25:10-18:8-16: 20-26:8-16:1.5-2.5:2-4:1-2:1.5-2.5.
Preferably, in S3, premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder is compound Object, talcum powder, medical stone powder, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil, 4- cumylphenol, bis- (3,5- Di-tert-butyl-4-hydroxyl benzyl) thioether squeezes out through double screw extruder, wherein double screw extruder barrel temperature from feed inlet to Extrusion points ten sections, successively set temperature be 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, The revolving speed of 200 DEG C, 192 DEG C, double screw extruder is 60-120r/min, obtains extruded stock.
Preferably, in S4, drying time 2-6h, drying temperature is 60-80 DEG C.
Preferably, in S4, injection temperature is 230-240 DEG C, injection pressure 4-5Mpa.
In S1 of the present invention, collagen is dispersed in formalin, after sodium hydroxide alkalizes in conjunction with melamine, On the one hand it can enhance the water resistance of collagen, it is on the other hand high with the degree of scatter of silicon powder, citric acid, it is handed over by copolymerization It after connection, is compounded with polyamide, good toughness, tensile strength and bending strength are high；In S2, using polyamide, chlorosulfonation Polyethylene is major ingredient, and blending, polyamide and chlorosulfonation are compounded together with polyvinyl butyral, dioctyl terephthalate The compatibility performance of polyethylene is fabulous, and cooperation silicon powder compound effect, after crosslinked solidification, crosslink density is high, tensile strength and Bending strength is high, and resistance to ag(e)ing is good, and processability is good；In S3, silicon powder compound under the cooperation of zinc stearate with talcum powder, wheat Meal mountain flour, calcined kaolin, sisal fiber good dispersion, be uniformly mixed that performance is excellent, and density is high, and binding force is strong, stretch strong Degree and bending strength further enhance.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of preparation method of counter-bending polyamide for automobile interiors, includes the following steps:
S1,8kg collagen, 140kg concentration are uniformly mixed for 16wt% formalin, 5kg sodium hydroxide is added and stirs 30min is mixed, 30kg melamine is added and stirs 15min, is warming up to 82 DEG C of stirring 50min, 16kg silicon powder, 14kg lemon is added Acid adjusts the temperature to 90 DEG C of stirring 30min, filtering, 140kg toluene is added, 4kg acrylic acid is uniformly mixed, addition 4kgN, N- bis- Methylformamide, 1kg ammonium persulfate are adjusted the temperature to 75 DEG C of stirring 30min, are washed using formalin, 140 DEG C of dryings, powder It is broken to obtain silicon powder compound；
S2, by 80kg polyamide, 50kg chlorosulfonated polyethylene, 2kg polyvinyl butyral, 4kg terephthalic acid (TPA) Dioctyl ester mixing, is warming up to 120 DEG C of stirring 30min, obtains premix；
S3, by 120kg premix, 2.5kg dibenzoyl peroxide, 0.2kg trimethylolpropane trimethacrylate, 25kg Silicon powder compound, 10kg talcum powder, 16kg medical stone powder, 20kg calcined kaolin, 16kg sisal fiber, 1.5kg stearic acid Bis- (3,5- di-tert-butyl-4-hydroxyl benzyl) thioethers of zinc, 4kg epoxidized soybean oil, 1kg4- cumylphenol, 2.5kg are squeezed through twin-screw Machine squeezes out out, and wherein double screw extruder barrel temperature is points ten sections from feed inlet to extrusion, successively set temperature be 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, 200 DEG C, 192 DEG C, the revolving speed of double screw extruder are 60r/min obtains extruded stock；
S4, extruded stock is dried to 6h, drying temperature is 60 DEG C, and injection molding, injection temperature is 240 DEG C, and injection pressure is 4Mpa, cooling obtain counter-bending polyamide for automobile interiors.
Embodiment 2
A kind of preparation method of counter-bending polyamide for automobile interiors, includes the following steps:
S1,16kg collagen, 120kg concentration are uniformly mixed for 22wt% formalin, 3kg sodium hydroxide is added and stirs 50min is mixed, 20kg melamine is added and stirs 25min, is warming up to 78 DEG C of stirring 70min, 8kg silicon powder, 20kg lemon is added Acid adjusts the temperature to 70 DEG C of stirring 50min, filtering, 100kg toluene is added, 8kg acrylic acid is uniformly mixed, addition 2kgN, N- bis- Methylformamide, 2kg ammonium persulfate are adjusted the temperature to 65 DEG C of stirring 50min, are washed using formalin, 120 DEG C of dryings, powder It is broken to obtain silicon powder compound；
S2, by 120kg polyamide, 30kg chlorosulfonated polyethylene, 4kg polyvinyl butyral, 2kg terephthalic acid (TPA) Dioctyl ester mixing, is warming up to 140 DEG C of stirring 20min, obtains premix；
S3, by 140kg premix, 1.5kg dibenzoyl peroxide, 0.4kg trimethylolpropane trimethacrylate, 15kg Silicon powder compound, 18kg talcum powder, 8kg medical stone powder, 26kg calcined kaolin, 8kg sisal fiber, 2.5kg zinc stearate, Bis- (3,5- di-tert-butyl-4-hydroxyl benzyl) thioethers of 2kg epoxidized soybean oil, 2kg4- cumylphenol, 1.5kg are through twin-screw extrusion Machine squeezes out, and wherein double screw extruder barrel temperature divides ten sections from feed inlet to extrusion, and successively set temperature is 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, 200 DEG C, 192 DEG C, the revolving speed of double screw extruder is 120r/ Min obtains extruded stock；
S4, extruded stock is dried to 2h, drying temperature is 80 DEG C, and injection molding, injection temperature is 230 DEG C, and injection pressure is 5Mpa, cooling obtain counter-bending polyamide for automobile interiors.
Embodiment 3
A kind of preparation method of counter-bending polyamide for automobile interiors, includes the following steps:
S1,10kg collagen, 135kg concentration are uniformly mixed for 18wt% formalin, 4.5kg sodium hydroxide is added 35min is stirred, 28kg melamine is added and stirs 18min, is warming up to 81 DEG C of stirring 55min, 14kg silicon powder, 16kg lemon is added Lemon acid, adjusts the temperature to 85 DEG C of stirring 35min, filters, and addition 130kg toluene, 5kg acrylic acid are uniformly mixed, and 3.5kgN is added, Dinethylformamide, 1.2kg ammonium persulfate are adjusted the temperature to 72 DEG C of stirring 35min, are washed using formalin, and 135 DEG C dry Dry, crushing obtains silicon powder compound；
S2, by 90kg polyamide, 45kg chlorosulfonated polyethylene, 2.5kg polyvinyl butyral, 3.5kg to benzene two The mixing of formic acid dioctyl ester, is warming up to 125 DEG C of stirring 28min, obtains premix；
S3, by 125kg premix, 2.2kg dibenzoyl peroxide, 0.25kg trimethylolpropane trimethacrylate, 22kg silicon powder compound, 12kg talcum powder, 14kg medical stone powder, 22kg calcined kaolin, 14kg sisal fiber, 1.8kg are hard Bis- (3,5- di-tert-butyl-4-hydroxyl benzyl) the thioether warps of resin acid zinc, 3.5kg epoxidized soybean oil, 1.3kg4- cumylphenol, 2.2kg Double screw extruder squeezes out, and wherein double screw extruder barrel temperature divides ten sections from feed inlet to extrusion, successively set temperature For 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, 200 DEG C, 192 DEG C, double screw extruder Revolving speed is 80r/min, obtains extruded stock；
S4, extruded stock is dried to 5h, drying temperature is 65 DEG C, and injection molding, injection temperature is 237 DEG C, and injection pressure is 4.2Mpa, cooling obtain counter-bending polyamide for automobile interiors.
Embodiment 4
A kind of preparation method of counter-bending polyamide for automobile interiors, includes the following steps:
S1,14kg collagen, 125kg concentration are uniformly mixed for 20wt% formalin, 3.5kg sodium hydroxide is added 45min is stirred, 22kg melamine is added and stirs 22min, is warming up to 79 DEG C of stirring 55-65min, addition 10-14kg silicon powder, 16-18kg citric acid adjusts the temperature to 75-85 DEG C of stirring 45min, filtering, and 110kg toluene, the mixing of 7kg acrylic acid is added It is even, 2.5kgN is added, dinethylformamide, 1.8kg ammonium persulfate adjust the temperature to 68 DEG C of stirring 45min, molten using formaldehyde Liquid washing, 125 DEG C dry, pulverize to obtain silicon powder compound；
S2, by 110kg polyamide, 35kg chlorosulfonated polyethylene, 3.5kg polyvinyl butyral, 2.5kg to benzene two The mixing of formic acid dioctyl ester, is warming up to 135 DEG C of stirring 22min, obtains premix；
S3, by 135kg premix, 1.8kg dibenzoyl peroxide, 0.35kg trimethylolpropane trimethacrylate, 18kg silicon powder compound, 16kg talcum powder, 10kg medical stone powder, 24kg calcined kaolin, 10kg sisal fiber 2.2kg are stearic Bis- (3,5- di-tert-butyl-4-hydroxyl benzyl) thioethers of sour zinc, 2.5kg epoxidized soybean oil, 1.7kg4- cumylphenol, 1.8kg are through double Screw extruder squeezes out, and wherein double screw extruder barrel temperature divides ten sections from feed inlet to extrusion, and successively set temperature is 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, 200 DEG C, 192 DEG C, double screw extruder turn Speed is 100r/min, obtains extruded stock；
S4, extruded stock is dried to 3h, drying temperature is 75 DEG C, and injection molding, injection temperature is 233 DEG C, and injection pressure is 4.8Mpa, cooling obtain counter-bending polyamide for automobile interiors.
Embodiment 5
A kind of preparation method of counter-bending polyamide for automobile interiors, includes the following steps:
S1,12kg collagen, 130kg concentration are uniformly mixed for 19wt% formalin, 4kg sodium hydroxide is added and stirs 40min is mixed, 25kg melamine is added and stirs 20min, is warming up to 80 DEG C of stirring 60min, 12kg silicon powder, 17kg lemon is added Acid adjusts the temperature to 80 DEG C of stirring 40min, filtering, 120kg toluene is added, 6kg acrylic acid is uniformly mixed, addition 3kgN, N- bis- Methylformamide, 1.5kg ammonium persulfate are adjusted the temperature to 70 DEG C of stirring 40min, are washed using formalin, 130 DEG C of dryings, Crushing obtains silicon powder compound；
S2, by 100kg polyamide, 40kg chlorosulfonated polyethylene, 3kg polyvinyl butyral, 3kg terephthalic acid (TPA) Dioctyl ester mixing, is warming up to 130 DEG C of stirring 25min, obtains premix；
S3, by 130kg premix, 2kg dibenzoyl peroxide, 0.3kg trimethylolpropane trimethacrylate, 20kg silicon Micro mist compound, 14kg talcum powder, 12kg medical stone powder, 23kg calcined kaolin, 12kg sisal fiber, 2kg zinc stearate, Bis- (3,5- di-tert-butyl-4-hydroxyl benzyl) thioethers of 3kg epoxidized soybean oil, 1.5kg4- cumylphenol, 2kg are through twin-screw extrusion Machine squeezes out, and wherein double screw extruder barrel temperature divides ten sections from feed inlet to extrusion, and successively set temperature is 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, 200 DEG C, 192 DEG C, the revolving speed of double screw extruder is 90r/ Min obtains extruded stock；
S4, extruded stock is dried to 4h, drying temperature is 70 DEG C, and injection molding, injection temperature is 235 DEG C, and injection pressure is 4.5Mpa, cooling obtain counter-bending polyamide for automobile interiors.
5 gained of embodiment counter-bending polyamide for automobile interiors and common polyamide resin are compared into test, Its result is as follows:
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (9)

1. a kind of preparation method of counter-bending polyamide for automobile interiors, which comprises the steps of:
S1, collagen, formalin are uniformly mixed, sodium hydroxide stirring is added, melamine stirring is added, heating is stirred It mixes, silicon powder, citric acid is added, adjust temperature stirring, filtering, addition toluene, acrylic acid are uniformly mixed, and N, N- dimethyl is added Formamide, ammonium persulfate, adjust temperature stirring, and washing dry, pulverize to obtain silicon powder compound；
S2, polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate are mixed, heating stirring Obtain premix；
S3, by premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder compound, talcum powder, wheat Meal mountain flour, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil, 4- cumylphenol, bis- (3,5- di-t-butyl -4- Hydroxybenzyl) thioether squeezes out to obtain extruded stock；
S4, extruded stock is dry, injection molding, it is cooling to obtain counter-bending polyamide for automobile interiors.
2. the preparation method of counter-bending polyamide for automobile interiors according to claim 1, which is characterized in that in S1, Formalin concentration is 16-22wt%, collagen, formalin, sodium hydroxide, melamine, silicon powder, citric acid, first Benzene, acrylic acid, N,N-dimethylformamide, ammonium persulfate weight ratio be 8-16:120-140:3-5:20-30:8-16:14- 20:100-140:4-8:2-4:1-2.
3. the preparation method of counter-bending polyamide for automobile interiors according to claim 1 or claim 2, which is characterized in that S1 In, collagen, formalin are uniformly mixed, sodium hydroxide is added and stirs 30-50min, melamine is added and stirs 15- 25min is warming up to 78-82 DEG C of stirring 50-70min, and silicon powder, citric acid is added, adjusts the temperature to 70-90 DEG C of stirring 30- 50min, filtering, addition toluene, acrylic acid are uniformly mixed, n,N-Dimethylformamide, ammonium persulfate are added, adjusts the temperature to 65-75 DEG C of stirring 30-50min, is washed using formalin, and 120-140 DEG C dry, pulverize to obtain silicon powder compound.
4. the preparation method of any one of -3 counter-bending polyamides for automobile interiors, feature exist according to claim 1 In, in S2, polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate weight ratio be 80- 120:30-50:2-4:2-4.
5. the preparation method of any one of -4 counter-bending polyamides for automobile interiors, feature exist according to claim 1 In, in S2, by polyamide, chlorosulfonated polyethylene, polyvinyl butyral, dioctyl terephthalate mix, be warming up to 120-140 DEG C of stirring 20-30min, obtains premix.
6. the preparation method of any one of -5 counter-bending polyamides for automobile interiors, feature exist according to claim 1 In, in S3, premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder compound, talcum powder, wheat meal Mountain flour, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil, 4- cumylphenol, bis- (3,5- di-t-butyl -4- hydroxyls Base benzyl) thioether weight ratio be 120-140:1.5-2.5:0.2-0.4:15-25:10-18:8-16:20-26:8-16:1.5- 2.5:2-4:1-2:1.5-2.5.
7. the preparation method of any one of -6 counter-bending polyamides for automobile interiors, feature exist according to claim 1 In in S3, by premix, dibenzoyl peroxide, trimethylolpropane trimethacrylate, silicon powder compound, talcum powder, wheat Meal mountain flour, calcined kaolin, sisal fiber, zinc stearate, epoxidized soybean oil, 4- cumylphenol, bis- (3,5- di-t-butyl -4- Hydroxybenzyl) thioether squeezes out through double screw extruder, and wherein double screw extruder barrel temperature is points ten from feed inlet to extrusion Section, successively set temperature be 182 DEG C, 190 DEG C, 212 DEG C, 229 DEG C, 220 DEG C, 230 DEG C, 243 DEG C, 210 DEG C, 200 DEG C, 192 DEG C, The revolving speed of double screw extruder is 60-120r/min, obtains extruded stock.
8. the preparation method of any one of -7 counter-bending polyamides for automobile interiors, feature exist according to claim 1 In in S4, drying time 2-6h, drying temperature is 60-80 DEG C.
9. the preparation method of any one of -8 counter-bending polyamides for automobile interiors, feature exist according to claim 1 In in S4, injection temperature is 230-240 DEG C, injection pressure 4-5Mpa.
CN201810783514.7A 2018-07-17 2018-07-17 A kind of preparation method of counter-bending polyamide for automobile interiors Withdrawn CN109135263A (en)

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