CN106046775A - Easily molding nylon mold material and preparation method thereof - Google Patents
Easily molding nylon mold material and preparation method thereof Download PDFInfo
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- CN106046775A CN106046775A CN201610389508.4A CN201610389508A CN106046775A CN 106046775 A CN106046775 A CN 106046775A CN 201610389508 A CN201610389508 A CN 201610389508A CN 106046775 A CN106046775 A CN 106046775A
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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
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- 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
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- 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
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Abstract
The invention discloses an easily molding nylon mold material. The material comprises the following raw materials in parts by weight: 0.1-0.2 parts of trimethylolpropane, 0.3-1 part of chitosan, 100-130 parts of nylon 66, 110-140 parts of dimethylformamide, 4-6 parts of molybdenum disulfide, 0.1-0.2 parts of lithium chloride, 2-3 parts of polystyrene, 20-30 parts of glass fibers, 0.7-1 part of hexadecyltrimethyl ammonium bromide, 0.6-1 part of dibenzothiazyl disulfide, 1-2 parts of tricalcium silicate, 2-3 parts of phthalate, 1-2 parts of dodecyl mercaptan, 0.7-1 part of sodium carboxymethyl cellulose and 2-3 parts of chlorinated paraffin. Added organic modified molybdenum disulfide can disperse in a polymer matrix, so that the thermal stability of the material is effectively improved, and molybdenum disulfide cannot release sulfur dioxide as non-combustible gas in the thermal degradation process, and the flame retardancy of the material can be improved by the dilution effect of molybdenum disulfide.
Description
Technical field
The present invention relates to mold materials technical field, particularly relate to a kind of easy-formation nylon mold materials and preparation side thereof
Method.
Background technology
Mould produces indispensable frock as modern industry, plays conclusive effect, current mould aborning
Tool uses metal material mostly, and quality and the life-span of metal die are the highest, but its cost of manufacture is expensive, especially some profiles
The metal die shaped complicated, difficult, manufacturing process is extremely complex, and a lot of metal materials there is also processing difficulties, processing week simultaneously
Phase is long, and the defect that after die wear, repair time is longer；
Along with developing rapidly of industry, improving constantly of the aspect such as polymer composites intensity and precision so that it is goods should
Also constantly expanding by scope, for metal material, polymer composites cost of manufacture is cheap, easy-formation, processing
Cycle is short, and repair time is short, and these advantages make it have huge potentiality in mould applications；
Molybdenum disulfide nano sheet layer has relatively low heat conductivity, sends out in polymeric material pyrolysis and combustion process for molybdenum bisuphide
Wave lamella blocking effect to provide safeguard；Meanwhile, the existence of transition metal molybdenum can promote that polymeric matrix forms cause
Close solid layer of charcoal, it is possible to effectively stop the exchanges of mass and energy between flame and polymeric matrix, suppress the degraded of polymer,
The final fire resistance improving polymeric material.Additionally, molybdate compound as multiple polymers such as PA, PVC, PS, HIPS,
ABS, polyolefin and the smoke suppressant of Halogen polyester, it is possible to reduce polymeric material burning cigarette and the growing amount of CO, reduce material
The fire risk of material, wins the quality time for fire rescue；
Document report for molybdenum bisuphide with polymer composites is concentrated mainly on the conduction of composite the most both at home and abroad
Property and the aspect such as frictional behaviour, seldom relate to hot property and the fire safety evaluating performance of material, therefore, system carry out two sulfur
Change molybdenum and derivant applied research in terms of flame retardance of polymer material thereof, to exploitation BACN, enrich and improve polymerization
Thing flame-retardant system, is of great immediate significance.
But, there is a most thorny difficult problem in the research of current molybdenum-disulfide radical polymer nanocomposites.Such as two
The dispersion in polymeric matrix of efficiently the peeling off of molybdenum sulfide, molybdenum disulfide nano sheet layer and single molybdenum disulfide nano sheet
Layer there may be the problems such as flame retarding efficiency is the highest；
Therefore, in order to solve the problems referred to above, the present invention explores, designs efficient molybdenum bisuphide stripping means；Utilize organic molecule
Modified molybdenum disulfide nanoscale twins is to improve its dispersibility in polymeric matrix；From the angle of MOLECULE DESIGN, two
Molybdenum sulfide sheet surfaces grafting organic fire-retardant and carrying inorganic metal compound nanoparticles, complex functionality curing molybdenum materials
Material.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of easy-formation nylon mold materials and system thereof
Preparation Method.
The present invention is achieved by the following technical solutions:
A kind of easy-formation nylon mold materials, it is made up of the raw material of following weight parts:
Trimethylolpropane 0.1-0.2, chitosan 0.3-1, nylon66 fiber 100-130, dimethylformamide 110-140, curing
Molybdenum 4-6, lithium chloride 0.1-0.2, polystyrene 2-3, glass fibre 20-30, cetyl trimethylammonium bromide 0.7-1, two sulfur
Change bisbenzothiazole 0.6-1, tricalcium silicate 1-2, phthalic acid ester 2-3, lauryl mercaptan 1-2, sodium carboxymethyl cellulose
0.7-1, chlorinated paraffin 2-3.
The preparation method of a kind of described easy-formation nylon mold materials, comprises the following steps:
(1) above-mentioned sodium carboxymethyl cellulose is joined in the deionized water of its weight 70-80 times, stir, add silicic acid
DFP, insulated and stirred 10-14 minute at 60-70 DEG C, obtain fibre emulsion；
(2) take above-mentioned lithium chloride, join in the deionized water of its weight 800-1000 times, stirring and dissolving, add above-mentioned two sulfur
Changing molybdenum, supersound process 1-2 hour, ultrasonic power is 300-400w, adds above-mentioned fibre emulsion, stirs, and stands 40-52 little
Time, filter, take the 30-40% of above-mentioned dimethylformamide weight, add the above-mentioned precipitation being filtrated to get, divide at 1500-1600/
Rotating speed under disperse 5-7 minute, molybdenum bisuphide suspension must be peeled off；
(3) by above-mentioned cetyl trimethylammonium bromide, chitosan mixing, join compound weight 100-120 times go from
In sub-water, stir, obtain lysate；
(4) above-mentioned stripping molybdenum bisuphide suspension being heated to 30-40 DEG C, drip above-mentioned lysate, after dropping, insulation is anti-
Answering 7-8 hour, 4000-5000 rev/min is stirred 7-10 minute, filters, by precipitation respectively by the acetum of 15-20%, anhydrous second
Alcohol washs 3-4 time, is dried 20-26 hour, obtains organically-modified molybdenum bisuphide at 60-65 DEG C；
(5) take the 30-40% of residue dimethylformamide weight, add polystyrene, stir；
(6) take above-mentioned organically-modified molybdenum bisuphide, join in remaining dimethylformamide, ultrasonic disperse 3-4 hour, add
The dimethyl formamide solution of above-mentioned polystyrene, stirring mixing 10-15 hour, pour in polytetrafluoroethylcontainer container, send into
The baking oven of 100-105 DEG C is dried 20-25 hour, raises oven temperature and be 130-135 DEG C, continue to be dried 10-13 hour, go out
Material, pulverizes the solid content obtained, obtains pretreatment modification composite；
(7) by above-mentioned lauryl mercaptan, chlorinated paraffin mixing, rise high-temperature and be 70-80 DEG C, add compound weight 20-30
Dehydrated alcohol again, adds trimethylolpropane, insulated and stirred 4-6 minute, adds above-mentioned pretreatment modification composite, 600-
1000 revs/min are stirred 3-4 minute, filter, and precipitation are washed 3-4 time, normal temperature drying, obtain modified composite material；
(8) above-mentioned modified composite material is mixed with remaining each raw material, stir, send in injection machine, add heat fusing, will be molten
Fluid after melting is injected in mould by nozzle, and the initial temperature of mould is maintained at 130-150 DEG C, at 80-90MPa after injection molding
Lower pressurize 1-2s, cooling, the demoulding, obtain described nylon mold materials.
The invention have the advantage that the machine modified molybdenum disulfide that the present invention adds can well be dispersed in polymeric matrix
In, and between polymer molecular chain, define uniform network structure, effectively limit the motion of polymer molecular chain, delay
The thermal degradation of polymer molecular chain, the two-dimensional nano lamellar structure adding molybdenum bisuphide self can reduce conduction of heat, because of
This effectively raises the heat stability of finished-product material, and molybdenum bisuphide can discharge non-flammable gases in thermal degradation process simultaneously
Sulfur dioxide, can play good diluting effect, thus improve fire resistance, and finished product molybdenum bisuphide during burning
To pyrolysis and combustion process in breeze be formed with facilitation, thick and heavy and closely knit layer of charcoal is equally to combustion heat release
Amount and thermal decomposition product play good iris action, and therefore the finished-product material of the present invention has good heat stability and anti-flammability
Can, the material good moldability of the present invention, stability is strong, and is unlikely to deform.
Detailed description of the invention
A kind of easy-formation nylon mold materials, it is made up of the raw material of following weight parts:
Trimethylolpropane 0.1, chitosan 0.3, nylon66 fiber 100, dimethylformamide 110, molybdenum bisuphide 4, lithium chloride 0.1,
Polystyrene 2, glass fibre 20, cetyl trimethylammonium bromide 0.7, dibenzothiazyl disulfide 0.6, tricalcium silicate 1, neighbour
Phthalic acid ester 2, lauryl mercaptan 1, sodium carboxymethyl cellulose 0.7, chlorinated paraffin 2.
The preparation method of a kind of described easy-formation nylon mold materials, comprises the following steps:
(1) above-mentioned sodium carboxymethyl cellulose is joined in the deionized water of its weight 70 times, stir, add silicic acid three
Calcium, at 60 DEG C, insulated and stirred 10 minutes, obtain fibre emulsion；
(2) take above-mentioned lithium chloride, join in the deionized water of its weight 800 times, stirring and dissolving, add above-mentioned molybdenum bisuphide,
Supersound process 1 hour, ultrasonic power is 300w, adds above-mentioned fibre emulsion, stirs, and stands 40 hours, filters, takes above-mentioned
The 30% of dimethylformamide weight, adds the above-mentioned precipitation being filtrated to get, and disperses 5 minutes, obtain stripping under the rotating speed of 1500/ point
From molybdenum bisuphide suspension；
(3) by above-mentioned cetyl trimethylammonium bromide, chitosan mixing, the deionized water of compound weight 100 times is joined
In, stir, obtain lysate；
(4) above-mentioned stripping molybdenum bisuphide suspension is heated to 30 DEG C, drips above-mentioned lysate, insulation reaction 7 after dropping
Hour, 4000 revs/min are stirred 7 minutes, filter, by precipitation respectively with 15% acetum, absolute ethanol washing 3 times, at 60 DEG C
Under be dried 20 hours, obtain organically-modified molybdenum bisuphide；
(5) take the 30% of residue dimethylformamide weight, add polystyrene, stir；
(6) taking above-mentioned organically-modified molybdenum bisuphide, join in remaining dimethylformamide, ultrasonic disperse 3 hours, in addition
State the dimethyl formamide solution of polystyrene, stirring mixing 10 hours, pour in polytetrafluoroethylcontainer container, send into 100 DEG C
Being dried 20 hours in baking oven, raising oven temperature is 130 DEG C, continues to be dried 10 hours, discharging, is pulverized by the solid content obtained,
Obtain pretreatment modification composite；
(7) by above-mentioned lauryl mercaptan, chlorinated paraffin mixing, rising high-temperature is 70 DEG C, adds the nothing of compound weight 20 times
Water-ethanol, adds trimethylolpropane, insulated and stirred 4 minutes, adds above-mentioned pretreatment modification composite, 600 revs/min of stirrings
3 minutes, filter, precipitation is washed 3 times, normal temperature drying, obtain modified composite material；
(8) above-mentioned modified composite material is mixed with remaining each raw material, stir, send in injection machine, add heat fusing, will be molten
Fluid after melting is injected in mould by nozzle, and the initial temperature of mould is maintained at 130 DEG C, pressurize under 80MPa after injection molding
1s, cooling, the demoulding, obtain described nylon mold materials.
The performance detection of the mould prepared with material of the present invention:
Appearance test:
The defects such as bubble-free, shrinkage cavity, surface indentation and wall unevenness are even, solid colour；
Ballistic work/J 23-40 DEG C: crack-free.
Claims (2)
1. an easy-formation nylon mold materials, it is characterised in that it is made up of the raw material of following weight parts:
Trimethylolpropane 0.1-0.2, chitosan 0.3-1, nylon66 fiber 100-130, dimethylformamide 110-140, curing
Molybdenum 4-6, lithium chloride 0.1-0.2, polystyrene 2-3, glass fibre 20-30, cetyl trimethylammonium bromide 0.7-1, two sulfur
Change bisbenzothiazole 0.6-1, tricalcium silicate 1-2, phthalic acid ester 2-3, lauryl mercaptan 1-2, sodium carboxymethyl cellulose
0.7-1, chlorinated paraffin 2-3.
2. the preparation method of an easy-formation nylon mold materials as claimed in claim 1, it is characterised in that include following step
Rapid:
(1) above-mentioned sodium carboxymethyl cellulose is joined in the deionized water of its weight 70-80 times, stir, add silicic acid
DFP, insulated and stirred 10-14 minute at 60-70 DEG C, obtain fibre emulsion；
(2) take above-mentioned lithium chloride, join in the deionized water of its weight 800-1000 times, stirring and dissolving, add above-mentioned two sulfur
Changing molybdenum, supersound process 1-2 hour, ultrasonic power is 300-400w, adds above-mentioned fibre emulsion, stirs, and stands 40-52 little
Time, filter, take the 30-40% of above-mentioned dimethylformamide weight, add the above-mentioned precipitation being filtrated to get, divide at 1500-1600/
Rotating speed under disperse 5-7 minute, molybdenum bisuphide suspension must be peeled off；
(3) by above-mentioned cetyl trimethylammonium bromide, chitosan mixing, join compound weight 100-120 times go from
In sub-water, stir, obtain lysate；
(4) above-mentioned stripping molybdenum bisuphide suspension being heated to 30-40 DEG C, drip above-mentioned lysate, after dropping, insulation is anti-
Answering 7-8 hour, 4000-5000 rev/min is stirred 7-10 minute, filters, by precipitation respectively by the acetum of 15-20%, anhydrous second
Alcohol washs 3-4 time, is dried 20-26 hour, obtains organically-modified molybdenum bisuphide at 60-65 DEG C；
(5) take the 30-40% of residue dimethylformamide weight, add polystyrene, stir；
(6) take above-mentioned organically-modified molybdenum bisuphide, join in remaining dimethylformamide, ultrasonic disperse 3-4 hour, add
The dimethyl formamide solution of above-mentioned polystyrene, stirring mixing 10-15 hour, pour in polytetrafluoroethylcontainer container, send into
The baking oven of 100-105 DEG C is dried 20-25 hour, raises oven temperature and be 130-135 DEG C, continue to be dried 10-13 hour, go out
Material, pulverizes the solid content obtained, obtains pretreatment modification composite；
(7) by above-mentioned lauryl mercaptan, chlorinated paraffin mixing, rise high-temperature and be 70-80 DEG C, add compound weight 20-30
Dehydrated alcohol again, adds trimethylolpropane, insulated and stirred 4-6 minute, adds above-mentioned pretreatment modification composite, 600-
1000 revs/min are stirred 3-4 minute, filter, and precipitation are washed 3-4 time, normal temperature drying, obtain modified composite material；
(8) above-mentioned modified composite material is mixed with remaining each raw material, stir, send in injection machine, add heat fusing, will be molten
Fluid after melting is injected in mould by nozzle, and the initial temperature of mould is maintained at 130-150 DEG C, at 80-90MPa after injection molding
Lower pressurize 1-2s, cooling, the demoulding, obtain described nylon mold materials.
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| CN201610389508.4A CN106046775A (en) | 2016-06-06 | 2016-06-06 | Easily molding nylon mold material and preparation method thereof |
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| CN201610389508.4A CN106046775A (en) | 2016-06-06 | 2016-06-06 | Easily molding nylon mold material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106633854A (en) * | 2016-12-12 | 2017-05-10 | 余姚市庆达机械有限公司 | High-performance mold material and preparation method thereof |
| CN106700352A (en) * | 2016-12-05 | 2017-05-24 | 芜湖天鸿汽车零部件有限公司 | Mould material for injection molding of automobile instrument panel shell and preparation method thereof |
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