CN108912590A - A kind of low warp filled polyoxymethylene plastics and preparation method for auto parts and components - Google Patents
A kind of low warp filled polyoxymethylene plastics and preparation method for auto parts and components Download PDFInfo
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- CN108912590A CN108912590A CN201810667777.1A CN201810667777A CN108912590A CN 108912590 A CN108912590 A CN 108912590A CN 201810667777 A CN201810667777 A CN 201810667777A CN 108912590 A CN108912590 A CN 108912590A
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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
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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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
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Abstract
The present invention relates to a kind of low warp filled polyoxymethylene plastics and preparation method for auto parts and components, by the way that glass fibre is assembled under waterglass bonding with hollow glass micro-ball, it is dry that strong blow is carried out using ultrahigh speed air blower, it is assembled by the bonding of waterglass, it is formed and is similar to spherical glass fibre self-assembly microspheres, anisotropy is significantly reduced, to solve the problems, such as that molded product deforms warpage.In particular so that polyformaldehyde has excellent tensile strength, bending strength and heat distortion temperature, the tensile strength of polyformaldehyde reaches 124-147MPa, and heat distortion temperature is increased to 170 DEG C from 136 DEG C.
Description
Technical field
The present invention relates to functional plastic technical fields, and in particular to a kind of low warp filled polyoxymethylene for auto parts and components
Plastics and preparation method.
Background technique
Polyformaldehyde is high crystalline polymer, therefore crystallization rate is fast, crystallinity is high, there is very high elasticity modulus, hardness
With rigidity, the advantages that anti-multiplicating impact is good, organic solvent-resistant, oil resistant, resistance to lubricant.As previously mentioned, polyformaldehyde has very
Mechanical property well, unique wear-resistant and self-lubrication, but its disadvantage is also very prominent, therefore, in automobile, household electrical appliances, electronics, does
Utility, machinery industry, polyformaldehyde can't fully meet requirement as its structural material, performance.It is using blending and modifying
Improve the effective way material of polyformaldehyde performance.
Polyformaldehyde is a kind of without side chain, high density, the linear polymer of high crystalline, with excellent comprehensive performance.
Polyformaldehyde is that a kind of surface is smooth, glossiness hard and fine and close material, yellowish or white, can be in -40-100 °C of temperature ranges
Interior long-time service.Its wearability and self-lubrication is also more superior than most engineering plastics, and has good oil resistant, resistance to peroxide
Compound performance.It is very not acidproof, intolerant to highly basic and intolerant to the radiation of solar ultraviolet.The tensile strength of polyformaldehyde reaches 70MPa, inhales
Aqueous small, dimensionally stable is glossy, these performances are all better than nylon, and polyformaldehyde is the resin of highly crystalline, in thermoplastic resin
In be most tough and tensile.Has heat resistanceheat resistant intensity, bending strength, fatigue durability intensity is high, wearability and excellent electrical properties.Improve poly- first
There are mainly four types of the methods of aldehyde wearability：1. adding organic polymer and polyoxymethylene blended manufacture wear-resisting type alloy；2. being added with
Machine lubricating oil, lubrication lipoid substance improve the friction and wear behavior of polyformaldehyde；3. adding inorganic compound improves polyformaldehyde
Friction and wear behavior.
In recent years, due to automobile, electronic apparatus, do the manufacturing industry such as shared device to energy conservation, miniaturization development, to poly-
The requirement of formaldehyde performance is also higher and higher.Although polyformaldehyde has excellent wear-resisting, self-lubricity, but still is not able to satisfy associated row
The increasingly developed needs of industry, intensity limit some application fields.Therefore, in recent years, the enhancing modification technology hair of polyformaldehyde
Quickly, modified enhancing polyformaldehyde has glass fiber reinforcement and fibre reinforced, and the good results are evident for fibre reinforced polyformaldehyde for exhibition, and
It has excellent performance, but carbon fiber is not able to satisfy a large amount of demand due to expensive price in modified polyacetal production process.Glass
Glass fiber reinforcement polyformaldehyde can significantly improve its tensile strength, bending strength and heat distortion temperature, therefore answer in process of production
With extensive.
Glass fiber reinforced acetal disadvantage is the warpage and deformation that anisotropy causes product at present, and because of knot
It is brilliant and caused by ununiform shrinkage, due to glass fiber reinforced acetal material in injection moulding process there are molding shrinkage compared with
Greatly, molding shrinkage anisotropy, so that molded product is easily-deformable and reduces its use scope.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of poly- first of low warpage for auto parts and components
Aldehyde plastics and preparation method effectively prevent polyformaldehyde in forming process since the relatively imperial palace that itself is generated is answered by the method
Product buckling deformation caused by power, dimensional accuracy is not high, product surface out-of-flatness, finish is not high, uses temperature requirement height
The problem of.
The purpose of the present invention is achieved through the following technical solutions：
S1 prepares sodium silicate solution：The waterglass of 2-5 parts by weight and the water of 20-25 parts by weight are stirred into 30- at 50-60 DEG C
45min obtains sodium silicate solution, for use；
S2 is glass fiber impregnated：The hollow glass micropearl of the alkali-free short glass fiber of 20-30 parts by weight, 10-15 parts by weight is soaked
In the sodium silicate solution that stain is prepared in S1 step, strong blow drying is carried out using ultrahigh speed air blower, passes through water
The bonding of glass assembles, and obtains the assembling microballoon of alkali-free glass fibre and hollow glass micropearl, for use；
S3 mixing：By acetal resin, the 1.0-1.5 parts by weight of the assembling microballoon of 60-70% in S2 step and 60-70 parts by weight
Processing aid, the antioxidant of 1.8-2.2 parts by weight, the lubricant of 1.5-1.8 parts by weight be added into high-speed mixer
Even mixing, it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling microballoon is passed through
Side spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
Polyformaldehyde is a kind of tough and tensile flexible material, even if still having good creep resistance, geometry steady at low temperature
Qualitative and impact property.The existing homopolymer material of polyformaldehyde also has copolymer material.Homopolymer material has to extend well
Intensity, fatigue resistance, but be not easy to process.Copolymer material has good thermal stability, chemical stability and is easy to add
Work.No matter homopolymer material or copolymer material, be all crystalline material and be not easy to absorb moisture.Polyformaldehyde it is highly crystalline
Degree causes it to have quite high shrinking percentage, up to arrives 2-3.5%.
Conventional glass is directly used in polyformaldehyde, since there are anisotropy for current glass fiber reinforced acetal, thus
Easily cause the warpage and deformation of product, and due to crystallization caused by ununiform shrinkage.The present invention is by existing glass fibre
Waterglass bonding is lower and hollow glass micro-ball assembles, and is formed and is similar to spherical glass fibre self-assembly microspheres, significantly reduces each
Anisotropy, to solve the problems, such as that molded product deforms warpage.In particular so that polyformaldehyde has excellent tensile strength, bending
The tensile strength of intensity and heat distortion temperature, polyformaldehyde reaches 124-147MPa, and heat distortion temperature is increased to 170 DEG C from 136 DEG C.
Further, the length 3.0-4.5mm of alkali-free short glass fiber.
Further, the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
Further, the processing aid is fatty acid diethanolamine；The antioxidant is butylated hydroxy anisole, two
At least one of butylated hydroxytoluene, tert-butyl hydroquinone；The lubricant is silicone lubricant.
Using sodium silicate solution impregnated glass fiber, and common mixed phase ratio, so that fiberglass surfacing has more preferable coupling
Cementation is closed, is assembled with permeability glass microsphere, it is sufficiently dry under superpower wind speed with high-speed blower, so that after impregnation
Fiberglass combination it is dirty for spherical shape.
Hollow glass micropearl has good mobility and self-lubricating function, can eliminate glass fibers as inorganic filler
Internal stress between peacekeeping polyoxymethylene modified material, it is ensured that dimensional stability.The addition of processing aid fatty diglycollic amide, to glass
Glass fiber has certain peptizaiton, reduces the exposed of glass fibre, improves product surface finish, improves the flowing of polyformaldehyde
Property, the friction of material and screw rod is reduced, while decomposing a small amount of acid generated to polyformaldehyde to have certain absorption, it can be certain
Polyformaldehyde degree of decomposition is reduced in degree.
Polyformaldehyde is effectively prevented in forming process since the larger internal stress that itself is generated causes by the method
Product buckling deformation, dimensional accuracy is not high, product surface out-of-flatness, finish is not high, uses the high problem of temperature requirement.
Further, dipping temperature is 50-60 DEG C in the S2 step, dip time 1.0-1.2h；The S2 step
The wind pressure of middle ultrahigh speed air blower is 200mbar, revolving speed 18000r/min.
Further, the revolving speed of the S3 step high speed mixing machine is 800-1000r/min, incorporation time 25-
30min。
Further, extrusion temperature is 160-180 DEG C in the S4 step, screw speed 50-100r/min.
The beneficial effects of the invention are as follows：Using sodium silicate solution impregnated glass fiber, and common mixed phase ratio, so that glass
The assembling microballoon that glass fiber surface has more preferable coupling caking property and hollow glass micro-ball to be assembled into ball shape, have with it is preferable each
The item same sex, has good thermal stability in hot-working, overcoming can buckling deformation.Hollow glass micropearl is as inorganic fill
Agent has good mobility and self-lubricating function, can eliminate internal stress between glass fibre and polyoxymethylene modified material, it is ensured that ruler
Very little stability.The addition of processing aid fatty diglycollic amide has certain peptizaiton to glass fibre, reduces glass fibers
That ties up is exposed, improves product surface finish, improves the mobility of polyformaldehyde, reduces the friction of material and screw rod, while to poly-
A small amount of acid that Formaldehyde decomposition generates has certain absorption, can reduce polyformaldehyde degree of decomposition to a certain extent；Pass through this
Method effectively prevent polyformaldehyde in forming process due to itself generate larger internal stress caused by product buckling deformation,
Dimensional accuracy is not high, product surface out-of-flatness, finish is not high, uses the high problem of temperature requirement；The material tool being prepared
There is excellent performance, tensile strength, bending strength and the heat distortion temperature of polyformaldehyde are significantly improved.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of low warp filled polyoxymethylene plastics for auto parts and components, are made of following raw material：Alkali-free short glass fiber
25 parts, 2 parts of waterglass, 12 parts of hollow glass micropearl, 65 parts of acetal resin, 1.3 parts of fatty acid diethanolamine, antioxidant
2.0 parts, 1.6 parts of silicone lubricant.
Specifically, the length 3.0-4.5mm of alkali-free short glass fiber.
Specifically, the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
Specifically, the antioxidant is butylated hydroxy anisole.
A kind of preparation method of above-mentioned low warp filled polyoxymethylene plastics for auto parts and components, includes the following steps：
S1 prepares sodium silicate solution：The waterglass of 2 parts by weight and the water of 22 parts by weight are stirred into 45min at 55 DEG C, obtained
Sodium silicate solution, for use；
S2 is glass fiber impregnated：Alkali-free short glass fiber, hollow glass micropearl are immersed in S1 step at 60 DEG C and are prepared into
To sodium silicate solution in 1.2h, use ultrahigh speed air blower to carry out strong blow in wind pressure to be for 200mbar, revolving speed
It is dry under conditions of 18000r/min, assembling microballoon is obtained, for use；
S3 mixing：By in S2 step 70% assembling microballoon with, acetal resin, fatty acid diethanolamine, antioxidant, silicone oil
Lubricant, which is added, uniformly mixes 30min into the high-speed mixer that revolving speed is 1000r/min, and it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling microballoon is passed through
Side spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
Specifically, extrusion temperature is 180 DEG C in the S4 step, screw speed 100r/min.
The tensile strength for the acetal plastic being prepared in embodiment 1 is 145MPa, bending strength 80MPa, thermal deformation
Temperature is promoted to 170 DEG C from 136 DEG C.
Embodiment 2
A kind of low warp filled polyoxymethylene plastics for auto parts and components, are made of following raw material：Alkali-free short glass fiber
20 parts, 2 parts of waterglass, 10 parts of hollow glass micropearl, 60 parts of acetal resin, 1.0 parts of fatty acid diethanolamine, antioxidant
1.8 parts, 1.5 parts of silicone lubricant.
Specifically, the length 3.0-4.5mm of alkali-free short glass fiber.
Specifically, the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
Specifically, the antioxidant is dibutyl hydroxy toluene and tert-butyl hydroquinone.
A kind of preparation method of above-mentioned low warp filled polyoxymethylene plastics for auto parts and components, includes the following steps：
S1 prepares sodium silicate solution：The waterglass of 2 parts by weight and the water of 20 parts by weight are stirred into 45min at 50 DEG C, obtained
Sodium silicate solution, for use；
S2 is glass fiber impregnated：Alkali-free short glass fiber, hollow glass micropearl are immersed in S1 step at 60 DEG C and are prepared into
To sodium silicate solution in 1.0h, use ultrahigh speed air blower to carry out strong blow in wind pressure to be for 200mbar, revolving speed
It is dry under conditions of 18000r/min, assembling microballoon is obtained, for use；
S3 mixing：By in S2 step 60% assembling microballoon with, acetal resin, fatty acid diethanolamine, antioxidant, silicone oil
Lubricant, which is added, uniformly mixes 30min into the high-speed mixer that revolving speed is 800r/min, and it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling microballoon is passed through
Side spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
Specifically, extrusion temperature is 160 DEG C in the S4 step, screw speed 50r/min.
The tensile strength for the acetal plastic being prepared in embodiment 2 is 124MPa, bending strength 78MPa, thermal deformation
Temperature is promoted to 170 DEG C from 136 DEG C.
Embodiment 3
A kind of low warp filled polyoxymethylene plastics for auto parts and components, are made of following raw material：Alkali-free short glass fiber
30 parts, 2.5 parts of waterglass, 15 parts of hollow glass micropearl, 70 parts of acetal resin, 1.5 parts of fatty acid diethanolamine, antioxidant
2.2 parts, 1.8 parts of silicone lubricant.
Specifically, the length 3.0-4.5mm of alkali-free short glass fiber.
Specifically, the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
Specifically, the antioxidant is dibutyl hydroxy toluene.
A kind of preparation method of above-mentioned low warp filled polyoxymethylene plastics for auto parts and components, includes the following steps：
S1 prepares sodium silicate solution：The waterglass of 2.5 parts by weight and the water of 25 parts by weight are stirred into 30min at 60 DEG C, obtained
To sodium silicate solution, for use；
S2 is glass fiber impregnated：Alkali-free short glass fiber, hollow glass micropearl are immersed in S1 step at 60 DEG C and are prepared into
To sodium silicate solution in 1.0h, use ultrahigh speed air blower to carry out strong blow in wind pressure to be for 200mbar, revolving speed
It is dry under conditions of 18000r/min, assembling microballoon is obtained, for use；
S3 mixing：In S2 step 65% assembling microballoon and acetal resin, fatty acid diethanolamine, antioxidant silicone oil are moistened
Lubrication prescription, which is added, uniformly mixes 28min into the high-speed mixer that revolving speed is 900r/min, and it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling microballoon is passed through
Side spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
Specifically, extrusion temperature is 170 DEG C in the S4 step, screw speed 80r/min.
The tensile strength for the acetal plastic being prepared in embodiment 3 is 134MPa, bending strength 70MPa, thermal deformation
Temperature is promoted to 170 DEG C from 136 DEG C.
Embodiment 4
A kind of low warp filled polyoxymethylene plastics for auto parts and components, are made of following raw material：Alkali-free short glass fiber
25 parts, 2 parts of waterglass, 12 parts of hollow glass micropearl, 65 parts of acetal resin, 1.3 parts of fatty acid diethanolamine, antioxidant
2.0 parts, 0.8 part of colorant, 0.4 part of UV absorbers, 5.2 parts of glass compatilizer, 1.6 parts of silicone lubricant.
Specifically, the length 3.0-4.5mm of alkali-free short glass fiber.
Specifically, the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
Specifically, the antioxidant is dibutyl hydroxy toluene.
A kind of preparation method of above-mentioned low warp filled polyoxymethylene plastics for auto parts and components, includes the following steps：
S1 prepares sodium silicate solution：The waterglass of 2 parts by weight and the water of 20 parts by weight are stirred into 30min at 60 DEG C, obtained
Sodium silicate solution, for use；
S2 is glass fiber impregnated：Alkali-free short glass fiber, hollow glass micropearl are immersed in S1 step at 60 DEG C and are prepared into
To sodium silicate solution in 1.0h, use ultrahigh speed air blower to carry out strong blow in wind pressure to be for 200mbar, revolving speed
It is dry under conditions of 18000r/min, assembling microballoon is obtained, for use；
S3 mixing：In S2 step 65% assembling microballoon and acetal resin, fatty acid diethanolamine, antioxidant silicone oil are moistened
Lubrication prescription, which is added, uniformly mixes 28min into the high-speed mixer that revolving speed is 900r/min, and it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling microballoon is passed through
Side spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
Specifically, extrusion temperature is 170 DEG C in the S4 step, screw speed 80r/min.
The tensile strength for the acetal plastic being prepared in embodiment 4 is 140MPa, bending strength 81MPa, thermal deformation
Temperature is promoted to 170 DEG C from 136 DEG C.
Comparative example 1
A kind of low warp filled polyoxymethylene plastics for auto parts and components, are made of following raw material：Alkali-free short glass fiber
30 parts, 15 parts of hollow glass micropearl, 70 parts of acetal resin, 1.5 parts of fatty acid diethanolamine, 2.2 parts of antioxidant, silicone oil profit
1.8 parts of lubrication prescription.
Specifically, the length 3.0-4.5mm of alkali-free short glass fiber.
Specifically, the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
Specifically, the antioxidant is dibutyl hydroxy toluene and tert-butyl hydroquinone.
A kind of preparation method of above-mentioned low warp filled polyoxymethylene plastics for auto parts and components, includes the following steps：
S1 prepares sodium silicate solution：Alkali-free short glass fiber, hollow glass micro-ball are impregnated at 60 DEG C and dispersed in water, is adopted
Strong blow drying under conditions of wind pressure is 200mbar, revolving speed is 18000r/min is carried out with ultrahigh speed air blower, obtains nothing
Alkali short glass fiber hollow glass micropearl assembles object, for use；
S3 mixing：By 60% assembling object, acetal resin, fatty acid diethanolamine, antioxidant, silicone oil lubrication in S2 step
Agent, which is added, uniformly mixes 30min into the high-speed mixer that revolving speed is 800r/min, and it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling object is passed through into side
Spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
Specifically, extrusion temperature is 160 DEG C in the S4 step, screw speed 50r/min.
Comparative example 1 is not bonded using waterglass, it is difficult to assemble glass fibre and hollow glass micropearl.Therefore glass fibre
Anisotropy performance it is obvious, thermal stability is poor, and product warpage is serious.The acetal plastic being prepared in comparative example 1
Tensile strength is 120MPa, bending strength 70MPa, and heat distortion temperature is promoted to 142 DEG C from 136 DEG C.
Claims (8)
1. a kind of preparation method of the low warp filled polyoxymethylene plastics for auto parts and components, which is characterized in that include the following steps：
S1 prepares sodium silicate solution：The waterglass of 2-5 parts by weight and the water of 20-25 parts by weight are stirred into 30- at 50-60 DEG C
45min obtains sodium silicate solution, for use；
S2 is glass fiber impregnated：The hollow glass micropearl of the alkali-free short glass fiber of 20-30 parts by weight, 10-15 parts by weight is soaked
In the sodium silicate solution that stain is prepared in S1 step, strong blow drying is carried out using ultrahigh speed air blower, passes through water
The bonding of glass assembles, and obtains the assembling microballoon of alkali-free glass fibre and hollow glass micropearl, for use；
S3 mixing：By acetal resin, the 1.0-1.5 parts by weight of the assembling microballoon of 60-70% in S2 step and 60-70 parts by weight
Processing aid, the antioxidant of 1.8-2.2 parts by weight, the lubricant of 1.5-1.8 parts by weight be added into high-speed mixer
Even mixing, it is stand-by to obtain mixture；
S4 extruding pelletization：Mixture in S3 step is added in the hopper of double screw extruder, residue assembling microballoon is passed through
Side spout is added in extruder, and extruding pelletization obtains the low enhanced acetal plastic of warpage.
2. a kind of preparation method of low warp filled polyoxymethylene plastics for auto parts and components according to claim 1, special
Sign is, the length 3.0-4.5mm of alkali-free short glass fiber.
3. a kind of preparation method of low warp filled polyoxymethylene plastics for auto parts and components according to claim 1, special
Sign is that the granularity of the hollow glass micropearl is 50-150 μm, and wall thickness is 1-2 μm.
4. a kind of preparation method of low warp filled polyoxymethylene plastics for auto parts and components according to claim 1, special
Sign is that the processing aid is fatty acid diethanolamine；The antioxidant is butylated hydroxy anisole, butylated hydroxy-a
At least one of benzene, tert-butyl hydroquinone；The lubricant is silicone lubricant.
5. a kind of preparation method of low warp filled polyoxymethylene plastics for auto parts and components according to claim 1, special
Sign is that dipping temperature is 50-60 DEG C in the S2 step, dip time 1.0-1.2h；Ultrahigh speed drum in the S2 step
The wind pressure of blower is 200mbar, revolving speed 18000r/min.
6. a kind of preparation method of low warp filled polyoxymethylene plastics for auto parts and components according to claim 1, special
Sign is that the revolving speed of the S3 step high speed mixing machine is 800-1000r/min, incorporation time 25-30min.
7. a kind of preparation method of low warp filled polyoxymethylene plastics for auto parts and components according to claim 1, special
Sign is that extrusion temperature is 160-180 DEG C in the S4 step, screw speed 50-100r/min.
8. a kind of low warp filled polyoxymethylene plastics for auto parts and components, which is characterized in that as described in claim any one of 1-7
Method is prepared.
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|---|---|---|---|
| CN201810667777.1A CN108912590A (en) | 2018-06-26 | 2018-06-26 | A kind of low warp filled polyoxymethylene plastics and preparation method for auto parts and components |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810667777.1A CN108912590A (en) | 2018-06-26 | 2018-06-26 | A kind of low warp filled polyoxymethylene plastics and preparation method for auto parts and components |
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| CN108912590A true CN108912590A (en) | 2018-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388179A (en) * | 2021-06-09 | 2021-09-14 | 道谷(江苏)新材料科技有限公司 | Preparation method of powder material for 3D printing |
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2018
- 2018-06-26 CN CN201810667777.1A patent/CN108912590A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388179A (en) * | 2021-06-09 | 2021-09-14 | 道谷(江苏)新材料科技有限公司 | Preparation method of powder material for 3D printing |
| CN113388179B (en) * | 2021-06-09 | 2023-01-06 | 道谷(江苏)新材料科技有限公司 | Preparation method of powder material for 3D printing |
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Application publication date: 20181130 |