CN109233219A - A kind of push-button material and preparation method thereof for exempting from oiling - Google Patents
A kind of push-button material and preparation method thereof for exempting from oiling Download PDFInfo
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- CN109233219A CN109233219A CN201810960192.9A CN201810960192A CN109233219A CN 109233219 A CN109233219 A CN 109233219A CN 201810960192 A CN201810960192 A CN 201810960192A CN 109233219 A CN109233219 A CN 109233219A
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- push
- exempting
- oiling
- button material
- speed mixer
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
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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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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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 relates to push-button material technical fields, refer in particular to a kind of push-button material and preparation method thereof for exempting from oiling；The present invention count by weight percentage, matches as follows: PBT:60-85%；Toughening compatilizer: 3-8%；Wollastonite in powder: 5-20%；Graphene oxide: 3-15%；Dimethyl silicone polymer: 1-3%；Silane coupling agent: 0.2-1%；The beneficial effects of the present invention are: push-button material is improved, can make material itself that there is wear-resisting characteristic, does not need to carry out oiling operation, material is saved, saves process, the service life for improving production efficiency, extending product.
Description
Technical field
The present invention relates to push-button material technical fields, refer in particular to a kind of push-button material and preparation method thereof for exempting from oiling.
Background technique
The products such as keyboard, telephone set, all have some plastic keys, the important indicator of these products first is that key tap
Life test, during percussion, keycap and positioning element generate friction, and it is insensitive that continuous frictional will lead to key, become to spring back
Playback difference even button malfunction.
The general material of existing market be ABS plastic (acrylonitrile (A), butadiene (B), styrene (S) three kinds of monomers three
Membered copolymer), in order to extend the percussion service life of key, through outer lubricating system oiling technique, between keycap and positioning element
Carry out oiling.
Aforementioned prior art has the following defects.
1. oils cannot be permanently kept between keycap and positioning element, with the increase of use time, usually 1-2
Year, oils, which can volatilize or consume, to be finished, this is that current key product use is more long, the more insensitive one of the main reasons of key.
2. oiling technique, viscosity and painting oil mass to oils are required strictly, and oils viscosity is too low or painting oil mass is excessive, in sea
Transport is sent under equal hot wet conditions, and there are the hidden danger of oils overflow, and product appearance is caused to have dirty print；Oils viscosity is excessively high or applies oil mass
Very few, the friction that will cause keycap and fixation member is big, and key taps the lost of life.
3. oiling technique is cumbersome, the processing time and process costs of key product are increased.
Therefore, the defect based on above-mentioned existing push-button material needs to improve existing push-button material.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art providing a kind of push-button material for exempting from oiling, this exempts from oiling
Push-button material solves present in existing push-button material: the defects of service life is short.
To achieve the above object, the present invention is achieved by the following technical solutions: a kind of push-button material for exempting from oiling is pressed
Weight percent calculates, and matches as follows: PBT:60-85%；Toughening compatilizer: 3-8%；Wollastonite in powder: 5-20%；Graphite oxide
Alkene: 3-15%；Dimethyl silicone polymer: 1-3%；Silane coupling agent: 0.2-1%.
Wherein, 25 DEG C of dimethyl silicone polymer are 100-10000cst.
Silane coupling agent is one kind or mixing of KH550, KH560 and KH570.
The present invention also provides a kind of preparation methods of push-button material for exempting from oiling, count by weight percentage, match as follows:
PBT:60-85%；Toughening compatilizer: 3-8%；Wollastonite in powder: 5-20%；Graphene oxide: 3-15%；Polydimethylsiloxanes
Alkane: 1-3%；Silane coupling agent: 0.2-1%；
Wollastonite in powder and graphene oxide are added in high-speed mixer, add silane coupling agent, 80 DEG C mix 5 minutes；
By the PBT and toughening compatilizer addition low speed mixer after 90 DEG C are toasted 1-2 hours, poly dimethyl is added
Siloxanes mixes 2 minutes；
The mixture of high-speed mixer is added in low speed mixer, is stirred 3 minutes with the mixture of low speed mixer,
The mixture stirred evenly can be obtained；
Then, double screw extruder is added in the mixture stirred evenly in low speed mixer, it is molten through double screw extruder
Melt plasticizing, cooling, the dry pelletizing of extrusion is got product.
Before low speed mixer is added in PBT, after first passing through 90 DEG C of bakings 1-2 hours.
The temperature of double screw extruder sets 180-240 DEG C, 200-400 revs/min of screw speed.
The beneficial effects of the present invention are: push-button material is improved, can make material itself that there is wear-resisting characteristic,
It does not need to carry out oiling operation, saves material, saves process, the service life for improving production efficiency, extending product.
Specific embodiment
A kind of push-button material for exempting from oiling of the present invention matches as follows: PBT (Polybutylene count by weight percentage
Terephthalate, polybutylene terephthalate (PBT)): 60-85%；Toughening compatilizer: 3-8%；Wollastonite in powder: 5-20%；
Graphene oxide: 3-15%；Dimethyl silicone polymer: 1-3%；Silane coupling agent: 0.2-1%.
Wherein, 25 DEG C of dimethyl silicone polymer are 100-10000cst.
Silane coupling agent is one kind or mixing of KH550, KH560 and KH570.
The step of preparation method of the invention, is as follows:
1. by weight percentage, the above component of precise.Firstly, it is mixed that wollastonite in powder and graphene oxide are added in high speed
Conjunction machine adds silane coupling agent, and 80 DEG C mix 5 minutes.
2. adding poly- diformazan secondly, PBT (90 DEG C baking 1-2 hours) and toughening compatilizer are added in low speed mixer
Radical siloxane mixes 2 minutes.
3. then, the mixture of high-speed mixer is added in low speed mixer, stirred with the mixture of low speed mixer
3 minutes, the mixture stirred evenly can be obtained.
4. double screw extruder then, is added in the mixture stirred evenly, temperature sets 180-240 DEG C, screw speed
It 200-400 revs/min, is got product through twin-screw fusion plastification, cooling, the dry pelletizing of extrusion.
The present invention is main substrate using PBT, and PBT has self-lubrication and wearability, the disadvantage is that after injection molding, it is rear to receive
Shrinkage is big, product size deviation easily occurs.Wollastonite in powder is a kind of microcosmic functional filler with threadiness, to the tough of product
Property influence to be far below glass fibre, can reinforcement PBT the big disadvantage of post-shrinkage ratio, and price is excellent honest and clean.
Graphene oxide, active group, is more readily dispersed in polar material than graphene, and it is higher to assign composite material
Self-lubrication and wearability.
The present invention passes through complementation and synergistic effect between material, is required by relevant technique, the composite material of preparation,
It does not need to be able to satisfy key by oiling between keycap and fixation member and tap life requirements.
Certainly, the embodiment of the above, only preferred embodiments of the invention, not limit the present invention and implement model
It encloses, therefore all equivalent change or modifications done according to structure, feature and principle described in scope of the present invention patent, should all include
In in scope of the present invention patent.
Claims (6)
1. a kind of push-button material for exempting from oiling, it is characterised in that: count by weight percentage, match as follows:
2. a kind of push-button material for exempting from oiling according to claim 1, it is characterised in that: 25 DEG C of dimethyl silicone polymer are
100-10000cst。
3. a kind of push-button material for exempting from oiling according to claim 1, it is characterised in that: silane coupling agent KH550,
One kind or mixing of KH560 and KH570.
4. a kind of preparation method for the push-button material for exempting from oiling, it is characterised in that: count by weight percentage, match as follows:
PBT:60-85%；Toughening compatilizer: 3-8%；Wollastonite in powder: 5-20%；Graphene oxide: 3-15%；Polydimethylsiloxanes
Alkane: 1-3%；Silane coupling agent: 0.2-1%；
Wollastonite in powder and graphene oxide are added in high-speed mixer, add silane coupling agent, 80 DEG C mix 5 minutes；
By the PBT and toughening compatilizer addition low speed mixer after 90 DEG C are toasted 1-2 hours, polydimethylsiloxanes are added
Alkane mixes 2 minutes；
The mixture of high-speed mixer is added in low speed mixer, is stirred 3 minutes with the mixture of low speed mixer
The mixture stirred evenly；
Then, double screw extruder is added in the mixture stirred evenly in low speed mixer, melts and moulds through double screw extruder
Change, squeeze out cooling, dry pelletizing is got product.
5. a kind of preparation method of push-button material for exempting from oiling according to claim 4, it is characterised in that: PBT is added low
Before fast mixing machine, after first passing through 90 DEG C of bakings 1-2 hours.
6. a kind of preparation method of push-button material for exempting from oiling according to claim 4, it is characterised in that: twin-screw extrusion
The temperature of machine sets 180-240 DEG C, 200-400 revs/min of screw speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810960192.9A CN109233219A (en) | 2018-08-22 | 2018-08-22 | A kind of push-button material and preparation method thereof for exempting from oiling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810960192.9A CN109233219A (en) | 2018-08-22 | 2018-08-22 | A kind of push-button material and preparation method thereof for exempting from oiling |
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| Publication Number | Publication Date |
|---|---|
| CN109233219A true CN109233219A (en) | 2019-01-18 |
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|---|---|---|---|
| CN201810960192.9A Pending CN109233219A (en) | 2018-08-22 | 2018-08-22 | A kind of push-button material and preparation method thereof for exempting from oiling |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035517A (en) * | 1988-02-19 | 1989-09-13 | 赫希斯特人造丝公司 | Polyester molding compounds |
| JP2003138124A (en) * | 2001-11-02 | 2003-05-14 | Mitsubishi Plastics Ind Ltd | Plastic sheet and laminated product and film key |
| JP2007092038A (en) * | 2005-08-30 | 2007-04-12 | Toray Ind Inc | Resin composition and molded product formed out thereof |
| CN103849124A (en) * | 2012-11-30 | 2014-06-11 | 杜邦公司 | Toughening thermoplastic composition containing polyester |
| CN106633687A (en) * | 2016-10-21 | 2017-05-10 | 安徽江淮汽车集团股份有限公司 | High-performance anti-abrasion PBT composite material and preparation method thereof |
| CN107936498A (en) * | 2017-12-20 | 2018-04-20 | 江阴市龙山合成材料有限公司 | A kind of piston of automobile safety-key PBT and preparation method thereof |
| CN107936457A (en) * | 2017-11-24 | 2018-04-20 | 广东威林工程塑料股份有限公司 | Short fine reinforced ABS alloy material of a kind of scratch-resistant low gloss oil resistant and laser carving for mechanical keyboard and preparation method thereof |
| CN108192268A (en) * | 2017-12-21 | 2018-06-22 | 柳州璞智科技有限公司 | A kind of computer keyboard material and preparation method thereof |
-
2018
- 2018-08-22 CN CN201810960192.9A patent/CN109233219A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035517A (en) * | 1988-02-19 | 1989-09-13 | 赫希斯特人造丝公司 | Polyester molding compounds |
| JP2003138124A (en) * | 2001-11-02 | 2003-05-14 | Mitsubishi Plastics Ind Ltd | Plastic sheet and laminated product and film key |
| JP2007092038A (en) * | 2005-08-30 | 2007-04-12 | Toray Ind Inc | Resin composition and molded product formed out thereof |
| CN103849124A (en) * | 2012-11-30 | 2014-06-11 | 杜邦公司 | Toughening thermoplastic composition containing polyester |
| CN106633687A (en) * | 2016-10-21 | 2017-05-10 | 安徽江淮汽车集团股份有限公司 | High-performance anti-abrasion PBT composite material and preparation method thereof |
| CN107936457A (en) * | 2017-11-24 | 2018-04-20 | 广东威林工程塑料股份有限公司 | Short fine reinforced ABS alloy material of a kind of scratch-resistant low gloss oil resistant and laser carving for mechanical keyboard and preparation method thereof |
| CN107936498A (en) * | 2017-12-20 | 2018-04-20 | 江阴市龙山合成材料有限公司 | A kind of piston of automobile safety-key PBT and preparation method thereof |
| CN108192268A (en) * | 2017-12-21 | 2018-06-22 | 柳州璞智科技有限公司 | A kind of computer keyboard material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《矿产资源工业要求手册》编委会编: "《矿产资源工业要求手册 2014修订版》", 31 January 2014 * |
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Application publication date: 20190118 |
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