CN1445078A - Moled bakelite for forming commutators in electrical motor and its preparing method - Google Patents
Moled bakelite for forming commutators in electrical motor and its preparing method Download PDFInfo
- Publication number
- CN1445078A CN1445078A CN 03103280 CN03103280A CN1445078A CN 1445078 A CN1445078 A CN 1445078A CN 03103280 CN03103280 CN 03103280 CN 03103280 A CN03103280 A CN 03103280A CN 1445078 A CN1445078 A CN 1445078A
- Authority
- CN
- China
- Prior art keywords
- consumption
- compression molding
- resol
- molded plastic
- coupling agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
A phenolic plastics used for manufacturing motor commutator by die pressing is prepared through pulverizing phenolic resin and hexamethine tetramine by 80 meshes, proportionally mixing with non-alkali short glass fibres, reinforcing nanoparticles, silane coupling agent, internal demoulding agent and defoaming agent, adding medical alcohol, plasticizing at 75-85 deg.C and cutting to become particles. Its advantages are high mechanical strength, high-temp resistance and electric insulation, and low cost.
Description
Technical field
The present invention relates to a kind of high strength heat resistant phenolic molded plastic that is used for the engine commutator compression molding and preparation method thereof.
Background technology
Be applied in direct-current machine, interchange series machine on power tool, household electrical appliance, automobile, motorcycle and other electrical equipment at present, all require the reverser of rotor coaxial rotation with it, under high temperature, high-speed condition, have spark the least possible in as far as possible little radial-deformation and the commutation process, and have the good flame performance.High-quality reverser then requires should have the high physical strength under good thermotolerance, electric insulating quality, dimensional stability, flame retardant resistance and the hot conditions as its structure and the moulded plastics of isolator.Past, the lower reverser of common requirement mostly adopts home-made 4330 type phenolic glass fiber moulded plasticss to carry out mold forming, it is to be toughener by long glass fibres, be equipped with the long filament moulded plastics that resol, auxiliary agent are made, be characterized in that physical strength is higher, cost is low, but labour intensity is big, manufacturability is poor, production efficiency is low, scrap rate is high, and can not carry out the production of press injecting type one-mold multiple-member, the reverser thermotolerance of its compression moulding is not high, and promptly radial-deformation does not reach requirement under high temperature, high-speed condition.Therefore progressively eliminated by the reverser industry.
Summary of the invention
Purpose of the present invention aims to provide a kind of phenolic molded plastic that is used for the engine commutator compression molding and preparation method thereof, by the made phenolic molded plastic particle of this method, be pressed into strip, can possess very high physical strength simultaneously, very high thermotolerance, very high insulativity and very low shrinking percentage and good flame, be applied to the engine commutator compression molding with it, resulting engine commutator finished product, at high temperature, radial-deformation can meet the demands under the high-speed condition, very high electrical insulation properties and flame retardant properties are arranged, and moulding process is simple, production cost is low.
Content of the present invention is: the phenolic molded plastic that is used for the engine commutator compression molding by following set of dispense than forming:
1. the resol consumption 25%～35%
2. solidifying agent is a hexamethylenetetramine, and consumption is 8%～14% of a resol
3. toughener adopts alkali free glass fibre, and consumption is 50%～70%
4. nanometer strengthening powder body and function amount is 2%～5%
5. coupling agent adopts silane coupling agent, and consumption is 0.3%～0.5%
6. the inner pattern releasing agent applicable consumption is 0.1%～1%.
The present invention is crushed to 80 orders with resol, hexamethylenetetramine earlier, carry out thorough mixing with alkali-free short glass fiber, nanometer reinforcement powder, silane coupling agent, inner pattern releasing agent applicable, defoamer then, add the medicinal alcohol mixing again, at last under 75 ℃～95 ℃ temperature, fully refine and mould, pelletizing moulding after the slice.
After above-mentioned each component is carried out thorough mixing, adopt the electric heating double roller plastic-making device to refine and mould.
Phenolic molded plastic provided by the invention (or particle), on hydropress, carry out the reverser compression molding with suitable technology, the reverser finished product that after a series of processing, obtains, its quality reaches every performance index of the technical requirements regulation among the machinery industry standard JB/T 10107-1999 of the People's Republic of China (PRC) " power tool reverser ", steady quality, and streamline production in enormous quantities, its production cost descends significantly.
Embodiment
Below be embodiments of the invention:
The present invention is used for the phenolic molded plastic of engine commutator compression molding and is made up of following component and proportioning:
27 parts in the resol of having pulverized
3.6 parts of the solidifying agent hexamethylenetetramines of having pulverized
Short 65.4 parts of the alkali free glass fibres of cutting
0.6 part of inner pattern releasing agent applicable
2.5 parts of nanometer reinforcement powders
0.3 part of defoamer
0.3 part of silane coupling agent
0.3 part of phthalocyanine green pigment
Behind thorough mixing, add 5 parts of medicinal alcohols by above material component, in 75 ℃～95 ℃ electric heating double roller plastic-making device, carry out behind the mixing fully mixing, in flakes after, carry out pelletizing, can become the moulded plastics finished product.
Outward appearance and forming composition performance by the phenolic molded plastic that is exclusively used in the engine commutator compression molding of embodiment of the invention gained see the following form:
| Sequence number | Index name | Unit | Data |
| ??1 | Outward appearance | Green irregular particle | |
| ??2 | Proportion | ????1.85～1.92 | |
| ??3 | Shrinking percentage | ????％ | ????≤0.14 |
| ??4 | Water-intake rate | ????％ | ????≤0.13 |
| ??5 | Heat-drawn wire | ????℃ | ????＞201 |
| ??6 | Fugitive constituent (before being shaped) | ????％ | ????≤2 |
| ??7 | Flame retardant resistance (normal beam technique) | Level | ????FV-0 |
| ??8 | Simple beam impact strength (non-notch) | ????kJ/m 2 | ????≥4.1 |
| ??9 | Flexural strength | ????Mpa | ????≥150 |
| ??10 | Tensile strength | ????Mpa | ????≥90 |
| ??11 | Insulation resistance | ????Ω | ????≥1×10 11 |
| ??12 | Dielectric strength | ??kV/mm | ????≥11 |
Claims (3)
1. phenolic molded plastic that is used for the engine commutator compression molding, it is characterized in that: it is made up of following component and proportioning:
1. the resol consumption 25%～35%
2. solidifying agent is a hexamethylenetetramine, and its consumption is 8%～14% of a resol
3. toughener adopts the alkali-free short glass fiber, and its consumption is 50%～70%
4. nanometer strengthening powder body and function amount is 2%～5%
5. coupling agent adopts silane coupling agent, and consumption is 0.3%～0.5%
6. the inner pattern releasing agent applicable consumption is 0.1%～1%
7. the defoamer consumption is 0.2%～0.5%.
2. preparation method who is used for the phenolic molded plastic of engine commutator compression molding, it is characterized in that: earlier resol, hexamethylenetetramine are crushed to 80 orders, carry out thorough mixing with alkali-free short glass fiber, nanometer reinforcement powder, silane coupling agent, inner pattern releasing agent applicable, defoamer then, add the medicinal alcohol mixing again, at last under 75 ℃～95 ℃ temperature, fully refine and mould, pelletizing moulding after the slice.
3. the preparation method who is used for the phenolic molded plastic of engine commutator compression molding as claimed in claim 2 is characterized in that: after each component is carried out thorough mixing, adopt the electric heating double roller plastic-making device to refine and mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103280 CN1445078A (en) | 2003-01-29 | 2003-01-29 | Moled bakelite for forming commutators in electrical motor and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103280 CN1445078A (en) | 2003-01-29 | 2003-01-29 | Moled bakelite for forming commutators in electrical motor and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1445078A true CN1445078A (en) | 2003-10-01 |
Family
ID=27814470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03103280 Pending CN1445078A (en) | 2003-01-29 | 2003-01-29 | Moled bakelite for forming commutators in electrical motor and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1445078A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391518A (en) * | 2011-08-23 | 2012-03-28 | 山东圣泉化工股份有限公司 | Polyurethane modified phenolic resin, preparation method thereof and phenolic resin molding powder composition |
| CN103121291A (en) * | 2011-11-18 | 2013-05-29 | 苹果公司 | Internal mold release |
| CN107163499A (en) * | 2017-07-15 | 2017-09-15 | 芜湖乾凯材料科技有限公司 | High strength fibre reinforced plastics wall hanging board and preparation method thereof |
-
2003
- 2003-01-29 CN CN 03103280 patent/CN1445078A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391518A (en) * | 2011-08-23 | 2012-03-28 | 山东圣泉化工股份有限公司 | Polyurethane modified phenolic resin, preparation method thereof and phenolic resin molding powder composition |
| CN103121291A (en) * | 2011-11-18 | 2013-05-29 | 苹果公司 | Internal mold release |
| CN107163499A (en) * | 2017-07-15 | 2017-09-15 | 芜湖乾凯材料科技有限公司 | High strength fibre reinforced plastics wall hanging board and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101161726B (en) | Highly-conductive polyphenylene sulfide composite material and method for making same | |
| CN103497484B (en) | Gao Mo, high-strength, high heat-resisting polyformaldehyde composite material and preparation method thereof | |
| CN101096443A (en) | Method for preparing epoxy sheet mould plastic | |
| CN103804851B (en) | Commutator injection molding phenolaldehyde moulding compound | |
| CN102825791B (en) | Production method for wood-plastic composite material | |
| CN103849141A (en) | Long glassfiber reinforced nylon composite material and preparation method thereof | |
| CN101724190A (en) | Asbestos fiber reinforced thermoplastic base wood and plastic composite material and preparing method thereof | |
| CN102321339B (en) | Amino resin composite capable of injection molding and preparation method thereof | |
| CN1927936A (en) | Modified phenolic resin/graphite based conducting composite material and preparation process thereof | |
| CN103788461A (en) | Method for preparing synthetic paper based on ultrahigh-molecular weight polyethylene | |
| CN103387746A (en) | Fiber- reinforced polyphenylene sulfide/polyamide alloy material and preparation method thereof | |
| CN1811995A (en) | Non-mold release agent composite insulator core rod | |
| CN1150597A (en) | Method for preparing reinforced epoxy moulding compound for packaging electric equipment | |
| CN1445078A (en) | Moled bakelite for forming commutators in electrical motor and its preparing method | |
| CN108822511A (en) | A kind of preparation method of the full biomass 3D printing nano combined wire rod of PLA | |
| CN105602098A (en) | Modified polypropylene composite material for 3D printing and preparation method thereof | |
| CN1252167C (en) | Method for preparing composite material capable of forming in situ conductive microfiber network | |
| CN101824215B (en) | Polycarbonate film applied to speaker network for electronic appliances and manufacturing method thereof | |
| CN112143194A (en) | Modified regenerated PC/ABS alloy reclaimed material and preparation method thereof | |
| CN1105143C (en) | Process for preparing phenolaldehyde moulding compound | |
| CN111019232B (en) | Thermoplastic composite material and preparation method and application thereof | |
| CN101701102A (en) | High-electric breakdown strength modified polyphenyl ether and preparation process thereof | |
| CN102241875A (en) | Filling reinforced PET/PBT alloy material and preparation method | |
| CN104672772A (en) | Carbon fiber reinforced polyformaldehyde composite material with excellent conductivity and preparation method thereof | |
| CN114031892A (en) | Special glass fiber composite reinforced material for high-end electric tool commutator and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |