CN109135165A - A kind of permanent antistatic polyoxymethylene composition material and preparation method thereof - Google Patents
A kind of permanent antistatic polyoxymethylene composition material and preparation method thereof Download PDFInfo
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- CN109135165A CN109135165A CN201710457831.5A CN201710457831A CN109135165A CN 109135165 A CN109135165 A CN 109135165A CN 201710457831 A CN201710457831 A CN 201710457831A CN 109135165 A CN109135165 A CN 109135165A
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- antioxidant
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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
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
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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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08K2201/017—Additives being an antistatic agent
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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
- C08L2201/04—Antistatic
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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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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of permanent antistatic polyoxymethylene composition material and preparation method thereof, is made of following components by its parts by weight: 1000 parts of polyformaldehyde, 1-5 parts of acetylene carbon black, 1-5 parts of alanine sodium, 2-5 parts of antioxidant, 20-30 parts of heat stabilizer, 10-20 parts of lubricant.The present invention is compounded with acetylene carbon black using alanine sodium as compounding antistatic agent, its good dispersion in resin matrix is added, and can form Filamentous or netted form, thus additive amount is seldom, does not influence machinery, the thermal property of original material.So the alloy material of preparation has permanent antistatic characteristic, and do not decay with the increase for using the time, also there is no be precipitated.
Description
Technical field
The invention belongs to macromolecule modified fields, and in particular to a kind of permanent antistatic polyoxymethylene composition material and its system
Preparation Method.
Background technique
Mine special equipment is chiefly used in underground mining operation or mineral products conveying, in the whole process frequent dust from flying, pole
It is also easy to produce the hidden danger of explosion, fire, therefore the plastic material used for mine special equipment needs to have antistatic requirement.But
Current existing antistatic plastic material mostly uses surfactant type antistatic agent, is that non-permanence is antistatic, and needs
Better antistatic effect could be obtained in the environment of high humility.This material antistatic effect generally after 1-2
It can disappear, material surface easily adsorbs dust after antistatic effect disappearance, considerably increases the risk of dust explosion.
Currently used permanent type antistatic agent be polyether-type antistatic agent, conductive black or conductive carbon nanotube, although
It can achieve permanent antistatic requirement, but seriously affected the performance of material, considerably increase the risk of equipment damage.And this is specially
The permanent antistatic polyoxymethylene composition material of permanent Antistatic type that benefit provides solves material physical property and permanent very well
The contradiction of antistatic property provides a kind of new scheme for the selection of pit gear material.
Summary of the invention
The object of the present invention is to provide a kind of polyformaldehyde composition and preparation method thereof, permanent antistatic spy is made it have
Property, it is suitable for mine special equipment, particularly suitable for products such as underground equipment shell, internal product, conveyer belt and its attachmentes.
In order to achieve the above object, the present invention is realized by following technical proposal:
A kind of permanent antistatic polyoxymethylene composition material is made of following components by its parts by weight:
Polyformaldehyde: 1000 parts
Acetylene carbon black: 1-5 parts
Alanine sodium: 1-5 parts
Antioxidant: 2-5 parts
Heat stabilizer: 20-30 parts
Lubricant: 10-20 parts.
Further scheme, the polyformaldehyde are kematal, and number-average molecular weight is 50,000-6 ten thousand, crystallinity 70%, contains
Water rate is lower than 0.5%.
The partial size of the acetylene carbon black is 300 mesh.
It is 60:25:15 group that the heat stabilizer is by organic tin stabilizer, zinc stearate and calcium stearate in mass ratio
At mixture.
The lubricant is polyethylene wax or oxidized polyethylene wax.
The antioxidant be selected from ten caprylate (antioxidant 1076) of β-(3,5- di-t-butyl hydroxy phenyl) acrylic acid,
Three-(2,4- tert-butyl-phenyl) phosphite esters (irgasfos 168), four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons
At least one of Doutrate (antioxidant 1010), thiodipropionic acid bis-dodecanol ester (antioxidant DLTDP).
Another goal of the invention of the invention is to provide a kind of preparation method of permanent antistatic polyoxymethylene composition material,
Polyformaldehyde, heat stabilizer, antioxidant and lubricant are added in high mixer and mixed, mixes 5-10min at 70-90 DEG C
Afterwards, alanine sodium is added, acetylene carbon black continuess to mix 5-10min；Then uniformly mixed material is sent by feed device
Enter extruding pelletization in double screw extruder, material adequately fuses under the shearing, mixing and conveying of screw rod, finally by squeezing
Out, product is made after tie rod, cooling, each zone temperatures of extruder are set as 160-170 DEG C of an area, two 180-190 DEG C of areas, 3rd area
190-220 DEG C, four 220-270 DEG C of areas.
Acetylene carbon black is main antistatic agent in the present invention, and alanine sodium is auxiliary antistatic agent, and the two can by compounding
The permanent antistatic problem of the very good solution present composition.And select partial size that can greatly reduce for the acetylene carbon black of 300 mesh
Its loading, and less acetylene carbon black, can make material obtain excellent antistatic effect.
So the invention has the following advantages:
1, permanent antistatic polyoxymethylene composition material prepared by the present invention has excellent mechanical property and processability
Energy.
2, antistatic agent conventional surfactant type antistatic agent used in this field, antistatic principle are that surface is precipitated
The steam in air is adsorbed afterwards, then the water layer of abutment surface takes away charge；When the intracorporal surfactant of base is all migrated to surface
After it is antistatic will to be consequently belonging to non-permanent type there is no antistatic effect.And the present invention is multiple using alanine sodium and acetylene carbon black
With as compounding antistatic agent, its good dispersion in resin matrix is added, and Filamentous or netted form can be formed, thus adds
Amount seldom, does not influence machinery, the thermal property of original material.So the alloy material of preparation has permanent antistatic characteristic,
And do not decay with the increase for using the time, also there is no be precipitated.
3, the heat stabilizer in the present invention is made of organotin 60%, zinc stearate 25% and calcium stearate 15%,
The problem of heat stabilizer of the special type solves in process, and Partial digestion can occur for raw material.
4, polyformaldehyde material prepared by the present invention be highly suitable for winning equipment, underground equipment etc. confrontation electrostatic grade want
High product is sought, other is also suitable for and needs permanent antistatic product.
Specific embodiment
The invention will be further described with reference to embodiments, and purpose, which is only that, is best understood from the object of the invention, and
Unrestricted protection scope of the present invention.
All substances are known commercial product in the embodiment of the present invention, and unit is parts by weight, wherein poly- first used
Aldehyde is kematal, and number-average molecular weight 50,000-6 ten thousand, crystallinity 70%, moisture content is lower than 0.5%；
The partial size of acetylene carbon black is 300 mesh；
Heat stabilizer is made of organotin 60%, zinc stearate 25% and calcium stearate 15% (mass percent).
Embodiment 1
Polyformaldehyde: 1000 parts
Alanine sodium: 1 part
Acetylene carbon black: 5 parts
Heat stabilizer: 20 parts
Polyethylene wax: 10 parts
Antioxidant 1076: 1 part
Irgasfos 168: 1 part
Load weighted polyformaldehyde, heat stabilizer, polyethylene wax and antioxidant 1076,168 are added together in high mixer
7min is mixed at 80 DEG C, then proceedes to alanine sodium, acetylene carbon black is added and remixes 5min, finally leads to uniformly mixed material
The feed device for crossing delicate metering is sent into extruding pelletization in double screw extruder, and each zone temperatures of extruder are set as an area 160
DEG C, two 180 DEG C of areas, three 190 DEG C of areas, four 230 DEG C of areas.Material adequately fuses under the shearing, mixing and conveying of screw rod, finally
Product is made after extrusion, tie rod, cooling.
Embodiment 2
Polyformaldehyde: 1000 parts
Alanine sodium: 2 parts
Acetylene carbon black: 1 part
Heat stabilizer: 30 parts
Polyethylene wax: 20 parts
Antioxidant 1076: 1 part
Irgasfos 168: 2 parts
Load weighted polyformaldehyde, heat stabilizer, polyethylene wax and antioxidant 1076,168 are added together in high mixer
7min is mixed at 80 DEG C, then proceedes to alanine sodium, acetylene carbon black is added and remixes 5min, finally leads to uniformly mixed material
The feed device for crossing delicate metering is sent into extruding pelletization in double screw extruder, and each zone temperatures of extruder are set as an area 170
DEG C, two 190 DEG C of areas, three 220 DEG C of areas, four 230 DEG C of areas.Material adequately fuses under the shearing, mixing and conveying of screw rod, finally
Product is made after extrusion, tie rod, cooling.
Embodiment 3
Polyformaldehyde: 1000 parts
Alanine sodium: 3 parts
Acetylene carbon black: 5 parts
Heat stabilizer: 20 parts
Oxidized polyethylene wax: 10 parts
Antioxidant 1076: 1 part
Irgasfos 168: 2 parts
High mixer is added in load weighted polyformaldehyde, heat stabilizer, oxidized polyethylene wax and antioxidant 1076,168 together
In mix 7min at 80 DEG C, then proceed to alanine sodium, acetylene carbon black is added and remix 5min, object that finally will be uniformly mixed
Material is sent into extruding pelletization in double screw extruder by the feed device of delicate metering, and each zone temperatures of extruder are set as an area
170 DEG C, two 190 DEG C of areas, three 220 DEG C of areas, four 220 DEG C of areas.Material adequately fuses under the shearing, mixing and conveying of screw rod,
Product finally is made after extrusion, tie rod, cooling.
Embodiment 4
Polyformaldehyde: 1000 parts
Alanine sodium: 4 parts
Acetylene carbon black: 1 part
Heat stabilizer: 25 parts
Polyethylene wax: 15 parts
Antioxidant 1076: 1 part
Irgasfos 168: 3 parts
Load weighted polyformaldehyde, heat stabilizer, polyethylene wax and antioxidant 1076,168 are added together in high mixer
7min is mixed at 80 DEG C, then proceedes to alanine sodium, acetylene carbon black is added and remixes 5min, finally leads to uniformly mixed material
The feed device for crossing delicate metering is sent into extruding pelletization in double screw extruder, and each zone temperatures of extruder are set as an area 160
DEG C, two 190 DEG C of areas, three 220 DEG C of areas, four 230 DEG C of areas.Material adequately fuses under the shearing, mixing and conveying of screw rod, finally
Product is made after extrusion, tie rod, cooling.
Embodiment 5
Polyformaldehyde: 1000 parts
Alanine sodium: 5 parts
Acetylene carbon black: 2 parts
Heat stabilizer: 25 parts
Oxidized polyethylene wax: 12 parts
Antioxidant 1076: 2 parts
Irgasfos 168: 3 parts
High mixer is added in load weighted polyformaldehyde, heat stabilizer, oxidized polyethylene wax and antioxidant 1076,168 together
In mix 7min at 80 DEG C, then proceed to alanine sodium, acetylene carbon black is added and remix 5min, object that finally will be uniformly mixed
Material is sent into extruding pelletization in double screw extruder by the feed device of delicate metering, and each zone temperatures of extruder are set as an area
160 DEG C, two 180 DEG C of areas, three 190 DEG C of areas, four 230 DEG C of areas.Material adequately fuses under the shearing, mixing and conveying of screw rod,
Product finally is made after extrusion, tie rod, cooling.
Comparative example
Polyformaldehyde: 1000 parts
Stearyl trimethyl quaternary ammonium salt (non-permanent type antistatic agent): 50 parts
Heat stabilizer: 20 parts
Polyethylene wax: 10 parts
Antioxidant 1076: 1 part
Irgasfos 168: 3 parts
Load weighted polyformaldehyde, heat stabilizer, polyethylene wax and antioxidant 1076,168 are added together in high mixer
7min is mixed at 80 DEG C, then proceedes to non-permanent type antistatic agent stearyl trimethyl quaternary ammonium salt is added and remixes 5min,
Uniformly mixed material is finally sent into extruding pelletization in double screw extruder by the feed device of delicate metering, extruder is each
Zone temperatures are set as 160 DEG C, two 180 DEG C of areas, three 190 DEG C of areas, four 230 DEG C of areas.Shearing, mixing and conveying of the material in screw rod
Lower adequately fusion, is finally made product after extrusion, tie rod, cooling.
Table 1
The test result of upper table 1 is tested using ASTM standard, and the volume resistivity of common polyformaldehyde is 1016
Ω, when its volume resistivity is lower than 1012Ω, it is believed that be antistatic-level.It can see from the test result of upper table 1, this hair
It is bright the compounding antistatic agent being made of alanine sodium, acetylene carbon black is added after, the body of permanent antistatic polyoxymethylene composition material
Product resistance reaches 109-1010Between Ω, while the bending of material and impact property are not influenced significantly, has material excellent
Different, permanent antistatic property and mechanical performance.It is compared with comparative example, 1-5 of the embodiment of the present invention is prepared permanent antistatic poly-
Volume resistivity of the formaldehyde composition material after 2 years is without significantly raised, and the permanent antistatic polyoxymethylene of comparative example preparation
The volume resistivity of composition material has risen to 1015Grade, and be commonly not different.It is prepared by the present invention permanent to illustrate
Antistatic polyoxymethylene composition material has the effect of permanent antistatic.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (7)
1. a kind of permanent antistatic polyoxymethylene composition material, it is characterised in that: it is made of following components by its parts by weight:
Polyformaldehyde: 1000 parts
Acetylene carbon black: 1-5 parts
Alanine sodium: 1-5 parts
Antioxidant: 2-5 parts
Heat stabilizer: 20-30 parts
Lubricant: 10-20 parts.
2. a kind of permanent antistatic polyoxymethylene composition material according to claim 1, it is characterised in that: the polyformaldehyde
For kematal, number-average molecular weight is 50,000-6 ten thousand, crystallinity 70%, moisture content lower than 0.5%.
3. a kind of permanent antistatic polyoxymethylene composition material according to claim 1, it is characterised in that: the acetylene carbon
Black partial size is 300 mesh.
4. a kind of permanent antistatic polyoxymethylene composition material according to claim 1, it is characterised in that: the thermostabilization
Agent is by the mixture that organic tin stabilizer, zinc stearate and calcium stearate are that 60:25:15 is formed in mass ratio.
5. a kind of permanent antistatic polyoxymethylene composition material according to claim 1, it is characterised in that: the lubricant
For polyethylene wax or oxidized polyethylene wax.
6. a kind of permanent antistatic polyoxymethylene composition material according to claim 1, it is characterised in that: the antioxidant
Selected from ten caprylate (antioxidant 1076) of β-(3,5- di-t-butyl hydroxy phenyl) acrylic acid, three-(2,4- tert-butyl-phenyls)
Phosphite ester (irgasfos 168), four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant
1010), at least one of thiodipropionic acid bis-dodecanol ester (antioxidant DLTDP).
7. a kind of preparation method of permanent antistatic polyoxymethylene composition material as described in claim 1, it is characterised in that: will
Polyformaldehyde, heat stabilizer, antioxidant and lubricant are added in high mixer and are mixed, after mixing 5-10min at 70-90 DEG C,
Add alanine sodium, acetylene carbon black continuess to mix 5-10min；Then uniformly mixed material is sent by feed device double
Extruding pelletization in screw extruder, material adequately fuse under the shearing, mixing and conveying of screw rod, finally by squeezing out, drawing
Product is made after item, cooling, each zone temperatures of extruder are set as 160-170 DEG C of an area, two 180-190 DEG C of areas, three area 190-
220 DEG C, four 220-270 DEG C of areas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710457831.5A CN109135165A (en) | 2017-06-16 | 2017-06-16 | A kind of permanent antistatic polyoxymethylene composition material and preparation method thereof |
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| CN201710457831.5A CN109135165A (en) | 2017-06-16 | 2017-06-16 | A kind of permanent antistatic polyoxymethylene composition material and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585410A (en) * | 2012-03-13 | 2012-07-18 | 苏州新区特氟龙塑料制品厂 | Formula of ultraviolet-resistant modified polyvinylidene fluoride |
| CN103694623A (en) * | 2013-12-18 | 2014-04-02 | 河南能源化工集团研究院有限公司 | Flame-retardant anti-static polyformaldehyde resin based on composite halogen-free flame-retardant system |
-
2017
- 2017-06-16 CN CN201710457831.5A patent/CN109135165A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585410A (en) * | 2012-03-13 | 2012-07-18 | 苏州新区特氟龙塑料制品厂 | Formula of ultraviolet-resistant modified polyvinylidene fluoride |
| CN103694623A (en) * | 2013-12-18 | 2014-04-02 | 河南能源化工集团研究院有限公司 | Flame-retardant anti-static polyformaldehyde resin based on composite halogen-free flame-retardant system |
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Application publication date: 20190104 |