CN110270684A - A kind of forming agent of metallic particles tooth, metallic particles tooth, preparation method and metal zip fastener - Google Patents
A kind of forming agent of metallic particles tooth, metallic particles tooth, preparation method and metal zip fastener Download PDFInfo
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- CN110270684A CN110270684A CN201910695863.8A CN201910695863A CN110270684A CN 110270684 A CN110270684 A CN 110270684A CN 201910695863 A CN201910695863 A CN 201910695863A CN 110270684 A CN110270684 A CN 110270684A
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- Prior art keywords
- tooth
- forming agent
- metallic particles
- parts
- polyformaldehyde
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Classifications
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention provides a kind of forming agent of metallic particles tooth, metallic particles tooth, preparation method and metal zip fasteners.The forming agent of metallic particles tooth provided by the invention, in terms of mass parts, including following components: 45~70 parts of polyformaldehyde；20~25 parts of paraffin；0.4~3 part of stearic acid；0~3 part of macromolecule wax；0~3 part of palm wax；0.1~0.6 part of antioxidant 1076；1~2 part of epoxidized soybean oil.Metallic particles tooth forming agent provided by the invention, polyformaldehyde and paraffin are arranged in pairs or groups using specific dosage as base-material, it is equipped with specific antioxidant 1076 again, and palm wax, macromolecule wax, stearic acid and the epoxidized soybean oil of certain dosage collocation, mobility and stability of raw material work in-process etc., and the performances such as intensity, precision property and tolerance for promoting particle tooth bud part can effectively be promoted.
Description
Technical field
The present invention relates to garment accessories technical field, in particular to a kind of forming agent of metallic particles tooth, metallic particles tooth,
Preparation method and metal zip fastener.
Background technique
Zipper is made article and closes or isolated connector, mainly by chain tooth, drawing by continuously arranged chain tooth or teeth
The composition such as head, strap.With the improvement of living standards, people have more requirements, metal to zipper appearance and decorative effect
Zipper is type most commonly seen in zipper, has the characteristics that high-grade metallic luster, good visual perception, is commonly used for
Luggage, sportswear, jeans, children's garment etc..
Currently, existing in line metal zip fastener is first to be made into code installs zipper by copper form wire arranges miaow on zipper strap,
Then Dow Chemical heat-tinting process after being carried out again to code dress metal zip fastener.It is limited by above-mentioned chemical oxidation coloring process, zipper
Tooth colouring type is single, and zipper strap discoloration, zipper tooth is easily caused to paint uneven and zipper color of teeth loosely,
Shifting dye easy to fall off.
To solve the above problems, being limited to technology releases metallic particles tooth zipper, it is using metal powder injection molding
(MIM) technique first produces individual zipper tooth particle, then again using the surface treatment such as plating, electrophoresis or spray painting to zipper
Tooth particle protection decoration, zipper strap finally using plant tooth machine that individual zipper tooth particle arranges miaow is good to pre-staining
On, it is made into code dress metallic particles tooth zipper finished product.Metallic particles tooth zipper tooth is painted, and type is abundant, and the colouring of zipper tooth is uniform
And zipper tooth color fastness is good, avoids zipper strap discoloration problem caused by later process.Moreover, with common in line metal
Zipper (passing through arranges miaow process continous way) is compared, and metallic particles tooth zipper is that each zipper teeth is passed through the one of polishing treatment
The smooth zipper of money keeps every zipper tooth all bright dazzling by techniques such as plating, enriches the color variation of zipper teeth, is energy
Sufficiently set off the zipper of clothes, luggage taste and style.Metallic particles tooth zipper is high-grade luxury clothes luggage on international market
The first choice application zipper style of brand client, and more and more luggage handbags, apparel industry use particle tooth zipper now,
Its future market is considerable.
Metallic particles tooth is to obtain raw material by metallic powder injection moulding process.It is raw materials used including metal powder and viscous
Agent is tied, raw material has vital influence to the performance of the processing forming and particle tooth product that belong to powder injection molding process.
The prior art mainly adopts organic binders and the mixture of oils as binder, and still, existing binder is easy to cause
Grain tooth bud part intensity is insufficient, shrinks that unstable, precision is not good enough, and smoothness is bad after making zipper, it is easy to fall off fall tooth.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of forming agent of metallic particles tooth, metallic particles tooth, its preparations
Method and metal zip fastener.The forming agent of metallic particles tooth provided by the invention is able to ascend the precision and intensive properties of particle tooth bud part
Can, so as to improve the usability of zipper.
The present invention provides a kind of forming agents of metallic particles tooth, in terms of mass parts, including following components:
Preferably, the degree of polymerization of the polyformaldehyde is 100~120.
Preferably, the number-average molecular weight of the macromolecule wax is 3000~5000.
Preferably, the content of the polyformaldehyde is 64~68 parts.
Preferably, the content of the paraffin is 23~25 parts.
Preferably, the partial size of the polyformaldehyde is 60~80 μm；The partial size of the paraffin is 60~80 μm；The macromolecule
The partial size of wax is 60~80 μm.
The present invention also provides a kind of metallic particles tooth, raw material includes metal powder and forming agent；The forming agent is above-mentioned
Forming agent described in technical solution.
Preferably, the mass ratio of the metal powder and forming agent is (92~94): (6~8)；The metal powder is copper powder.
The present invention also provides a kind of preparation methods of metallic particles tooth as described in the above technical scheme, including following step
It is rapid:
A) after metal powder being mixed to preheating with forming agent, injection moulding obtains formed body；
B) to the formed body degreasing and sintering, particle tooth base is obtained；
C) the particle tooth base is post-processed, obtains metallic particles tooth.
The present invention also provides a kind of metal zip fastener, the chain tooth of the metal zip fastener is described in above-mentioned technical proposal
Metallic particles tooth or be metallic particles tooth made from preparation method as described in the above technical scheme.
The present invention provides a kind of forming agents of metallic particles tooth, in terms of mass parts, including following components: polyformaldehyde 45~
70 parts；20~25 parts of paraffin；0.4~3 part of stearic acid；0~3 part of macromolecule wax；0~3 part of palm wax；Antioxidant 1076 0.1~
0.6 part；1~2 part of epoxidized soybean oil.Metallic particles tooth forming agent provided by the invention, by polyformaldehyde and paraffin with specific dosage
Collocation is used as base-material, then is equipped with specific antioxidant 1076, and palm wax, the macromolecule wax, stearic acid of certain dosage collocation
And epoxidized soybean oil, mobility and stability of raw material work in-process etc. can be effectively promoted, and promote the strong of particle tooth bud part
The performances such as degree, precision property and tolerance.
Test result shows it can is that the horizontal drawing strength of metallic particles tooth reaches 600N using forming agent provided by the invention
More than, single tooth displacement strength reaches 57N or more, and load drawing time reaches 500 times or more, and precision reaches ± 0.3%, has excellent
Intensity and precision.Meanwhile showing excellent salt spray resistance and dry cleaning resistance washing performance.
Specific embodiment
The present invention provides a kind of forming agents of metallic particles tooth, in terms of mass parts, including following components:
Metallic particles tooth forming agent provided by the invention arranges in pairs or groups polyformaldehyde and paraffin as base-material using specific dosage, then
It is equipped with specific antioxidant 1076, and palm wax, macromolecule wax, stearic acid and the epoxidized soybean oil of certain dosage collocation, energy
Enough mobility for effectively promoting raw material work in-process and stability etc., and promote the intensity and precision property of particle tooth bud part.
In the present invention, the degree of polymerization of the polyformaldehyde is preferably 100~120, if the degree of polymerization is too low or excessively high, can be caused
The contraction of particle tooth is unstable, is easily deformed, precision is poor.In the present invention, the content of the polyformaldehyde is 45~70 parts, preferably
64~68 parts.
In the present invention, the partial size of the polyformaldehyde material is preferably 60~80 μm, using the poly- first under above-mentioned particle size range
Aldehyde raw material can preferably cooperate with metal powder, melt forming agent in a short time, reduce the high-temperature mixing time, obtain
Blank dimensional contraction after high temperature sintering is stablized, and is unlikely to deform, precision is high.
In the present invention, on the basis of 45~70 mass parts of polyoxymethylene level, the content of the paraffin is 20~25 parts, preferably
It is 23~25 parts.The present invention using above-mentioned specific proportion collocation as bulk composition, draws polyformaldehyde and paraffin again on its basis
Enter above-mentioned other ingredients, be conducive to the intensity and precision that promote particle tooth bud part, to be conducive to be promoted suitable after being made into zipper
Slippery, it is not easily to fall off fall tooth.The paraffin that above-mentioned content is introduced in the present invention, in forming agent promotes in mixing and injection technique
Metal powder and forming agent mixing are evenly dispersed, if its content is too low or excessively high, easily lead to molding blank precision it is poor, influence to draw
Chain smoothness.
In the present invention, the partial size of the paraffin material is preferably 60~80 μm, former using the paraffin under above-mentioned particle size range
Material can preferably cooperate with metal powder, melt forming agent in a short time, reduce the high-temperature mixing time, obtained blank
Dimensional contraction is stablized after high temperature sintering, is unlikely to deform, and precision is high.
It further include stearic acid in the forming agent in the present invention.It is described on the basis of 45~70 mass parts of polyoxymethylene level
Stearic content is 0.4~3 part.
It further include macromolecule wax (also known as polyethylene wax) in the present invention, in the forming agent.In the present invention, the macromolecule
The number-average molecular weight of wax is preferably 3000~5000, if molecular weight is too low or excessively high, the blank after will affect injection moulding is de-
Mould causes particle tooth defect, reduces particle tooth intensity.It is described on the basis of 45~70 mass parts of polyoxymethylene level in the present invention
The content of macromolecule wax is 0~3 part, preferably 1.5~3 parts, compared with not adding, helps to be injected into after adding macromolecule wax
It is demoulded after type, guarantees product integrality and strength character.
In the present invention, the partial size of the macromolecule wax material is preferably 60~80 μm, using the height under above-mentioned particle size range
Molecule wax stock can preferably cooperate with metal powder, melt forming agent in a short time, reduce the high-temperature mixing time, obtain
The blank arrived dimensional contraction after high temperature sintering is stablized, and is unlikely to deform, precision is high.
It further include palm wax in the forming agent in the present invention.It is described on the basis of 45~70 mass parts of polyoxymethylene level
The content of palm wax is 0~3 part, preferably 1.5~3 parts, compared with not adding, introduces palm wax in material system of the present invention
Afterwards, it can significantly improve powder particle circle caking phenomenon after mixing with metal powder, improve processing forming and promote particle tooth
Performance.
It further include antioxidant 1076 in the forming agent in the present invention.In material system of the invention, introduce above-mentioned specific
Antioxidant, can preferably arrange in pairs or groups with the other components of the present invention, the performance of molding blank be promoted, if replacing with other antioxygens
Agent then will affect the precision and intensity of particle tooth bud part, can not obtain superperformance.In the present invention, with polyoxymethylene level 45
On the basis of~70 mass parts, the content of the antioxidant 1076 is 0.1~0.6 part.
Further include epoxidized soybean oil in the forming agent in the present invention, introduces epoxidized soybean oil and be conducive to promote shaping block
The thermal stability of part.In the present invention, on the basis of 45~70 mass parts of polyoxymethylene level, the content of the epoxidized soybean oil is 1
~2 parts.
The present invention also provides a kind of preparation methods of forming agent as described in the above technical scheme, comprising: will be above-mentioned each
It is uniform by three-roller ground and mixed after component is uniformly mixed in proportion, obtain forming agent.
The present invention also provides a kind of metallic particles tooth, raw material includes metal powder and forming agent；Wherein, the forming agent
For forming agent as described in the above technical scheme.
In the present invention, the metal powder is preferably copper powder, using copper powder in conjunction with above-mentioned forming agent, can improve copper powder with
Bonding state between forming agent component, the performances such as mobility, the stability of improving material promote particle tooth bud precision and intensity.
In the present invention, the partial size of the copper powder is preferably 60~80 μm, the partial size with polyformaldehyde, paraffin and macromolecule wax in forming agent
Matching can preferably promote the dimensional contraction stability of particle tooth after sintering, promote Product Precision.
In the present invention, the mass ratio of the metal powder and forming agent is preferably (92~94): (6~8), if forming agent ratio
Too low, then ingredient viscosity is big after will lead to mixing, is unfavorable for ingredient injection molding, if forming agent ratio is excessively high, will lead to embryo
Cubical contraction is excessive after part is degreasing sintered, influences blank precision.
The present invention also provides a kind of preparation method of metallic particles tooth as described in the above technical scheme, feature exists
In, comprising the following steps:
A) after metal powder being mixed to preheating with forming agent, injection moulding obtains formed body；
B) to the formed body degreasing and sintering, particle tooth base is obtained；
C) the particle tooth base is post-processed, obtains metallic particles tooth.
In the present invention, in the step a), the mixing preheating is preferably included: forming agent being first preheated to 170~210
DEG C, metal powder is added, is uniformly mixed.Wherein, when metal powder is added, preferably a small amount of in batches repeatedly addition, after addition, institute
The time for stating mixing is preferably 60~90min.After above-mentioned mixing preheating, it is injection moulded.The temperature of the injection is preferred
It is 170~210 DEG C；Injection pressure is preferably 110~130MPa；Injection speed is preferably 35~50m/s.After being injection moulded,
Obtain formed body.
In the present invention, in the step b), the degreasing preferably comprises solvent degreasing and thermal debinding.The solvent degreasing
In, the degreasing solvent of use is preferably one or more of oxalic acid, citric acid and tartaric acid.The temperature of the solvent degreasing is excellent
It is selected as 80~110 DEG C；The time of solvent degreasing is preferably 2~3h.After the solvent degreasing, thermal debinding is carried out.The heat is de-
The process of rouge is preferably as follows: being warming up to 140~160 DEG C of 25~35min of heat preservation for the first time, is warming up to 290~310 DEG C of guarantors for the second time
70~80min of temperature is warming up to 490~510 DEG C of 40~50min of heat preservation for the third time, then cools to room temperature with the furnace.Wherein, for the first time
The rate of heating is preferably 4~6 DEG C/min；The rate of second of heating is 0.5~1.5 DEG C/min；The rate of third time heating
Preferably 4~6 DEG C/min.
In the present invention, in the step b), the temperature of the sintering is preferably 750~1000 DEG C, and the time of sintering is preferred
For 120~150min.It after the sintering, is cooled to room temperature, obtains particle tooth base.
In the present invention, in the step c), the post-processing is preferably surface-treated.The present invention is to the surface treatment
Mode is not particularly limited, and is according to the protection decoration that surface treatment mode well known to those skilled in the art carries out particle tooth
Can, such as can be surface-treated by plating, electrophoresis or spray painting.After above-mentioned post-processing, metallic particles tooth is obtained.Obtain gold
After metal particles tooth, using tooth machine is planted by independent metallic particles tooth arranges miaow on the zipper strap dyed, gold is obtained
Belong to zipper finished product.
The present invention also provides a kind of metal zip fastener, the chain tooth of the metal zip fastener is gold as described in the above technical scheme
Metallic particles tooth made from metal particles tooth or preparation method as described in the above technical scheme.
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.In following embodiment, copper powder particle size used is 60~80 μm, and average particle size is 75 μm.Polyformaldehyde granularity used be 60~
80 μm, average particle size is 72 μm.The partial size of paraffin used is 60~80 μm, and average particle size is 68 μm.The grain of macromolecule wax used
Diameter is 60~80 μm, and average particle size is 70 μm.
Embodiment 1
1.1 raw material
93 parts of copper powder, 7 parts of forming agent.
Wherein, forming agent includes:
45 parts of polyformaldehyde (degree of polymerization 105), 2 parts of stearic acid, 2 parts of macromolecule wax (molecular weight 4000), 25 parts of paraffin, palm
1 part of wax, 0.3 part of antioxidant 1076,1.5 parts of epoxidized soybean oil.
1.2 preparation
S1, mixing: 195 DEG C will be preheated to by the uniform forming agent of three-roller ground and mixed, then repeatedly added on a small quantity in batches
Enter copper powder, mixes 75min.
S2, injection: injection temperature is 195 DEG C, pressure 116MPa, speed 40m/s.
S3, degreasing: solvent oxalic acid, the degreasing 2h at 80 DEG C are first used；Carry out 500 DEG C of gradient increased temperature thermal debindings again: 5 DEG C/min
150 DEG C of heat preservation 30min are warming up to, then 300 DEG C of heat preservation 75min are warming up to 1 DEG C/min, then 500 DEG C of guarantors are warming up to 5 DEG C/min
Warm 45min, cools to room temperature with the furnace.
S4, sintering: being sintered 135min at 900 DEG C, be cooled to room temperature, and obtains metallic particles tooth base.
S5, it is surface-treated by plating, plates imitative layer gold in particle tooth surface, thickness of coating is 15 μm, obtains metal
Particle tooth.
S6, pass through arranges miaow, be fabricated to metallic particles tooth zipper finished product.
Correlated performance test is carried out to the metallic particles tooth that step S5 is obtained,
Embodiment 2
1.1 raw material
93 parts of copper powder, 7 parts of forming agent.
Wherein, forming agent includes:
70 parts of polyformaldehyde (degree of polymerization 105), 2 parts of stearic acid, 2 parts of macromolecule wax (molecular weight 4000), 20 parts of paraffin, palm
1 part of wax, 0.3 part of antioxidant 1076,1.5 parts of epoxidized soybean oil
1.2 preparation
S1, mixing: 195 DEG C will be preheated to by the uniform forming agent of three-roller ground and mixed, then repeatedly added on a small quantity in batches
Enter copper powder, mixes 75min.
S2, injection: injection temperature is 195 DEG C, pressure 116MPa, speed 40m/s.
S3, degreasing: solvent oxalic acid, the degreasing 2h at 80 DEG C are first used；Carry out 500 DEG C of gradient increased temperature thermal debindings again: 5 DEG C/min
150 DEG C of heat preservation 30min are warming up to, then 300 DEG C of heat preservation 75min are warming up to 1 DEG C/min, then 500 DEG C of guarantors are warming up to 5 DEG C/min
Warm 45min, cools to room temperature with the furnace.
S4, sintering: being sintered 135min at 900 DEG C, be cooled to room temperature, and obtains metallic particles tooth base.
S5, it is surface-treated by plating, plates imitative layer gold in particle tooth surface, thickness of coating is 15 μm, obtains metal
Particle tooth.
S6, pass through arranges miaow, be fabricated to metallic particles tooth zipper finished product.
Embodiment 3
1.1 raw material
93 parts of copper powder, 7 parts of forming agent.
Wherein, forming agent includes:
64 parts of polyformaldehyde (degree of polymerization 105), 2 parts of stearic acid, 2 parts of macromolecule wax (molecular weight 4000), 23.5 parts of paraffin, palm fibre
1 part of palmitic acid wax, 0.3 part of antioxidant 1076,1.5 parts of epoxidized soybean oil
1.2 preparation
S1, mixing: 195 DEG C will be preheated to by the uniform forming agent of three-roller ground and mixed, then repeatedly added on a small quantity in batches
Enter copper powder, mixes 75min.
S2, injection: injection temperature is 195 DEG C, pressure 116MPa, speed 40m/s.
S3, degreasing: solvent oxalic acid, the degreasing 2h at 80 DEG C are first used；Carry out 500 DEG C of gradient increased temperature thermal debindings again: 5 DEG C/min
150 DEG C of heat preservation 30min are warming up to, then 300 DEG C of heat preservation 75min are warming up to 1 DEG C/min, then 500 DEG C of guarantors are warming up to 5 DEG C/min
Warm 45min, cools to room temperature with the furnace.
S4, sintering: being sintered 135min at 900 DEG C, be cooled to room temperature, and obtains metallic particles tooth base.
S5, it is surface-treated by plating, plates imitative layer gold in particle tooth surface, thickness of coating is 15 μm, obtains metal
Particle tooth.
S6, pass through arranges miaow, be fabricated to metallic particles tooth zipper finished product.
Embodiment 4
1.1 raw material
93 parts of copper powder, 7 parts of forming agent.
Wherein, forming agent includes:
68 parts of polyformaldehyde (degree of polymerization 105), 2 parts of stearic acid, 2 parts of macromolecule wax (molecular weight 4000), 25 parts of paraffin, palm
1 part of wax, 0.3 part of antioxidant 1076,1.5 parts of epoxidized soybean oil
1.2 preparation
S1, mixing: 195 DEG C will be preheated to by the uniform forming agent of three-roller ground and mixed, then repeatedly added on a small quantity in batches
Enter copper powder, mixes 75min.
S2, injection: injection temperature is 195 DEG C, pressure 116MPa, speed 40m/s.
S3, degreasing: solvent oxalic acid, the degreasing 2h at 80 DEG C are first used；Carry out 500 DEG C of gradient increased temperature thermal debindings again: 5 DEG C/min
150 DEG C of heat preservation 30min are warming up to, then 300 DEG C of heat preservation 75min are warming up to 1 DEG C/min, then 500 DEG C of guarantors are warming up to 5 DEG C/min
Warm 45min, cools to room temperature with the furnace.
S4, sintering: being sintered 135min at 900 DEG C, be cooled to room temperature, and obtains metallic particles tooth base.
S5, it is surface-treated by plating, plates imitative layer gold in particle tooth surface, thickness of coating is 15 μm, obtains metal
Particle tooth.
S6, pass through arranges miaow, be fabricated to metallic particles tooth zipper finished product.
Embodiment 5
Correlated performance test is carried out to metallic particles tooth obtained by step S4 in Examples 1 to 4, as a result referring to table 1.
The performance test results of 1 Examples 1 to 4 of table
| Test item | Test foundation | Technical indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Horizontal drawing strength | BS3084-2006 | ≥500N | 629 | 613 | 660 | 631 |
| Single tooth displacement strength | BS3084-2006 | ≥55N | 61 | 57 | 65 | 63 |
| Load draws secondary | BS3084-2006 | >=500 times | 600 | 600 | 600 | 600 |
| Precision | IS08062:1994 | ± 0.5% | ± 0.28% | ± 0.3% | ± 0.2.0% | ± 0.25% |
| 1% salt spray test (for 24 hours) | ASTM B117 | Corrosion-free, nothing is got rusty | It is up to standard | It is up to standard | It is up to standard | It is up to standard |
| 5% salt spray test (for 24 hours) | ASTM B117 | Corrosion-free, nothing is got rusty | It is up to standard | It is up to standard | It is up to standard | It is up to standard |
| Dry-clean appearance test | AATCC 158&Visual | Discoloration: 4.0 ranks, appearance are unchanged | It is up to standard | It is up to standard | It is up to standard | It is up to standard |
| (5 times) are tested in special washing | AATCC 150 | Discoloration: 4.0 ranks, appearance are unchanged | It is up to standard | It is up to standard | It is up to standard | It is up to standard |
The properties test of the embodiment of the present invention 1~4 is all satisfied technical indicator and wants it can be seen from 1 test result of table
It asks, shows good intensity, precision, tolerance etc..Wherein, compared with Examples 1 to 2, the intensity and essence of embodiment 3~4
Degree is further promoted, it was demonstrated that the content of polyformaldehyde and paraffin is in optimum ratio (64~68):, can be further when under (23~25)
Promote the performance of particle tooth.
Comparative example 1~2
It is carried out according to the preparation process of embodiment 1, unlike, in raw material, it is as follows to form each group distribution ratio in agent prescription:
30 parts of polyformaldehyde (degree of polymerization 105), 5 parts of stearic acid, 0 part of macromolecule wax (molecular weight 4000), 35 parts of paraffin, palm
8 parts of wax, 5 parts of antioxidant 1076,5 parts of epoxidized soybean oil.
It is carried out according to the preparation process of embodiment 1, unlike, in raw material, it is as follows to form each group distribution ratio in agent prescription:
90 parts of polyformaldehyde (degree of polymerization 105), 0.1 part of stearic acid, 6 parts of macromolecule wax (molecular weight 4000), 10 parts of paraffin, palm fibre
0 part of palmitic acid wax, 0.01 part of antioxidant 1076,0.01 part of epoxidized soybean oil.
Comparative example 1~2 is tested for the property according to the test method of embodiment 5, and is compared with embodiment 1, is tied
Fruit is referring to table 2.
The performance test results of 2 comparative example 1~2 of table
| Test item | Test foundation | Technical indicator | Embodiment 1 | Comparative example 1 | Comparative example 2 |
| Horizontal drawing strength | BS3084-2006 | ≥500N | 629 | 485 | 472 |
| Single tooth displacement strength | BS3084-2006 | ≥55N | 61 | 46 | 43 |
| Load draws secondary | BS3084-2006 | >=500 times | 600 | 324 | 362 |
| Precision | IS08062:1994 | ± 0.5% | ± 0.28% | ± 0.59% | ± 0.63% |
| 1% salt spray test (for 24 hours) | ASTM B117 | Corrosion-free, nothing is got rusty | It is up to standard | It is up to standard | It is up to standard |
| 5% salt spray test (for 24 hours) | ASTM B117 | Corrosion-free, nothing is got rusty | It is up to standard | It is up to standard | It is up to standard |
| Dry-clean appearance test | AATCC 158&Visual | Discoloration: 4.0 ranks, appearance are unchanged | It is up to standard | It is up to standard | It is up to standard |
| (5 times) are tested in special washing | AATCC 150 | Discoloration: 4.0 ranks, appearance are unchanged | It is up to standard | It is up to standard | It is up to standard |
The performances such as intensity, precision of comparative example 1~2 are not satisfied technical indicator and want it can be seen from 2 test result of table
It asks, it was demonstrated that, only under dosage collocation of the invention, metallic particles tooth could obtain excellent properties.
Embodiment 6~7 and comparative example 3~4
According to embodiment 3 preparation process carry out, unlike, the degree of polymerization of polyformaldehyde, the molecular weight of macromolecule wax and
Antioxidant type is adjusted, referring specifically to table 3.
The raw material feature of 3 embodiment 6~9 of table
| The polyformaldehyde degree of polymerization | Macromolecule wax molecular weight | Antioxidant type | |
| Embodiment 6 | 100 | 3000 | Antioxidant 1076 |
| Embodiment 7 | 120 | 5000 | Antioxidant 1076 |
| Comparative example 1 | 80 | 2000 | Antioxidant BHT |
| Comparative example 2 | 150 | 8000 | Antioxidant 9701 |
Embodiment 6~7 and comparative example 3~4 are tested for the property according to the test method of embodiment 5, as a result referring to table
4。
The metallic particles tooth properties of embodiment 6~7 are all satisfied technical indicator and want it can be seen from 4 test result of table
It asks, shows the performances such as preferable intensity, precision and tolerance, and the properties of comparative example 3~4 are poor.It proves, using spy
Fixed antioxidant 1076, and control polyformaldehyde the degree of polymerization 100~120, the molecular weight of macromolecule wax 3000~5000,
The performance of metallic particles tooth can effectively be promoted.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.To these embodiments
A variety of modifications will be readily apparent to those skilled in the art, the general principles defined herein can be with
Without departing from the spirit or scope of the present invention, it realizes in other embodiments.Therefore, the present invention will not be limited
In the embodiments shown herein, and it is to fit to widest model consistent with the principles and novel features disclosed in this article
It encloses.
Claims (10)
1. a kind of forming agent of metallic particles tooth, which is characterized in that in terms of mass parts, including following components:
2. forming agent according to claim 1, which is characterized in that the degree of polymerization of the polyformaldehyde is 100~120.
3. forming agent according to claim 1, which is characterized in that the number-average molecular weight of the macromolecule wax be 3000~
5000。
4. forming agent according to claim 1, which is characterized in that the content of the polyformaldehyde is 64~68 parts.
5. forming agent according to claim 1, which is characterized in that the content of the paraffin is 23~25 parts.
6. forming agent according to claim 1, which is characterized in that the partial size of the polyformaldehyde is 60~80 μm；
The partial size of the paraffin is 60~80 μm；
The partial size of the macromolecule wax is 60~80 μm.
7. a kind of metallic particles tooth, which is characterized in that raw material includes metal powder and forming agent；
The forming agent is forming agent according to any one of claims 1 to 6.
8. metallic particles tooth according to claim 7, which is characterized in that the mass ratio of the metal powder and forming agent is
(92~94): (6~8)；
The metal powder is copper powder.
9. the preparation method of metallic particles tooth described in a kind of any one of claim 7~8, which is characterized in that including following
Step:
A) after metal powder being mixed to preheating with forming agent, injection moulding obtains formed body；
B) to the formed body degreasing and sintering, particle tooth base is obtained；
C) the particle tooth base is post-processed, obtains metallic particles tooth.
10. a kind of metal zip fastener, which is characterized in that the chain tooth of the metal zip fastener is described in any one of claim 7~8
Metallic particles tooth is metallic particles tooth made from preparation method as claimed in claim 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111922346A (en) * | 2020-07-31 | 2020-11-13 | 兰州金浩机械制造有限公司 | Feeding binder for Kowa alloy injection molding and preparation method thereof |
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