CN103756212A - Gas phase white carbon black filled and modified polytetrafluoroethylene material for pumps and valves - Google Patents
Gas phase white carbon black filled and modified polytetrafluoroethylene material for pumps and valves Download PDFInfo
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- CN103756212A CN103756212A CN201310696682.XA CN201310696682A CN103756212A CN 103756212 A CN103756212 A CN 103756212A CN 201310696682 A CN201310696682 A CN 201310696682A CN 103756212 A CN103756212 A CN 103756212A
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- phase silica
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Abstract
Belonging to the field of high polymer materials, the invention in particular relates to a gas phase white carbon black filled and modified polytetrafluoroethylene material for pumps and valves.The material is made of the following raw materials by weight part: 100 of polytetrafluoroethylene, 1-2 of gas phase white carbon black, 2-3 of magnesium hydroxide, 3-4 of sodium tripolyphosphate, 1-2 of cobalt oxide, and 4-5 of an additive. According to the invention, gas phase white carbon black, magnesium hydroxide and other raw materials are employed to perform filling modification treatment on polytetrafluoroethylene, thus improving the mechanical properties. On the basis of adhering to the excellent properties of polytetrafluoroethylene itself, the strength, toughness, abrasion resistance and other performance are improved, and the powder is evenly dispersed. The devices used for pumps and valves and prepared from the polytetrafluoroethylene material provided by the invention have smooth, clean and bright surface, as well as long service life, and are safe and reliable.
Description
Technical field
The invention belongs to polymeric material field, be specifically related to filling-modified polytetrafluoroethylmaterial material of gas-phase silica and preparation method thereof for a kind of pump valve.
Background technology
It is little that polytetrafluoroethylmaterial material has frictional coefficient, do not absorb water, difficult combustion, the corrosion-resistant excellent properties feature that waits, main as barrier film in pump valve, sealing member, the multiple device such as sealing friction pair, yet in actual application process, tetrafluoroethylene exists linear expansivity large, poor dimensional stability, poor heat conductivity, easy-cold flow, the shortcoming such as easy-formation not, make it in use have defect, have a strong impact on the performance of pump and valve, therefore, need to carry out modification to tetrafluoroethylene, improve its performance shortcomings, expand use range, increase the service life, guarantee the normal work of pump and valve.
Summary of the invention
The object of the invention is to, the filling-modified polytetrafluoroethylmaterial material of gas-phase silica for a kind of pump valve is provided, promoted the mechanical property of polytetrafluoroethylmaterial material, to achieve these goals, the technical solution used in the present invention is as follows:
The filling-modified polytetrafluoroethylmaterial material of gas-phase silica for a kind of pump valve, it is characterized in that, material of the present invention is made by the raw material of following weight part: tetrafluoroethylene 100, gas-phase silica 1-2, magnesium hydroxide 2-3, tripoly phosphate sodium STPP 3-4, cobalt oxide 1-2, auxiliary agent 4-5.
Described auxiliary agent is made by the raw material of following weight part: attapulgite 30-35, clay 12-15, molybdic oxide 1-2, nanometer potter's clay 10-12, titanium dioxide 1-2, Silane coupling agent KH550 1-2, aluminium sesquioxide 3-4, zinc borate 1-2, lapis amiridis 3-4; Its preparation method is attapulgite, clay to be put into calcining furnace at 800-830 ℃, calcine 3-4 hour, takes out coolingly, pulverizes, and puts into 12-15% aqueous hydrochloric acid, soaks 1-2 hour, filters, and with clear water washing, dries and get final product; The powder of drying is mixed with other surplus stock, and grinding distribution 2-3 hour, obtains.
The described filling-modified polytetrafluoroethylmaterial material of gas-phase silica for a kind of pump valve, its production technique is:
(1) tetrafluoroethylene is pulverized standby;
(2) material of (1) is mixed with gas-phase silica, magnesium hydroxide, cobalt oxide, in water medium, be ground to 200-400 order, the powder dry for standby obtaining;
(3) tripoly phosphate sodium STPP is ground to 200-400 order, adds together with auxiliary agent in the material of (2), after being uniformly mixed, through compression molding, high temperature sintering, machining and get final product.
The invention has the advantages that: utilize the raw materials such as gas-phase silica, magnesium hydroxide to carry out filling-modified processing to tetrafluoroethylene, its mechanical property improves, the material of preparation has not only acted on the good performance of tetrafluoroethylene itself, its intensity, toughness and wear resisting property all improve, pump prepared by modified teflon material provided by the invention, valve device, long service life, safe and reliable.
Embodiment
Embodiment
The present embodiment material is made by following weight part raw material: tetrafluoroethylene 100, gas-phase silica 2, magnesium hydroxide 3, tripoly phosphate sodium STPP 4, cobalt oxide 2, auxiliary agent 5.
Described auxiliary agent is made by the raw material of following weight part: attapulgite 30, clay 12, molybdic oxide 1, nanometer potter's clay 10, titanium dioxide 2, Silane coupling agent KH550 1, aluminium sesquioxide 4, zinc borate 2, lapis amiridis 3; Its preparation method is attapulgite, clay to be put into calcining furnace at 800-830 ℃, calcine 3-4 hour, takes out coolingly, pulverizes, and puts into 12-15% aqueous hydrochloric acid, soaks 1-2 hour, filters, and with clear water washing, dries and get final product; The powder of drying is mixed with other surplus stock, and grinding distribution 2-3 hour, obtains.
The described filling-modified polytetrafluoroethylmaterial material of gas-phase silica for a kind of pump valve, its production technique is:
(1) tetrafluoroethylene is pulverized standby;
(2) material of (1) is mixed with gas-phase silica, magnesium hydroxide, cobalt oxide, in water medium, be ground to 400 orders, the powder dry for standby obtaining;
(3) tripoly phosphate sodium STPP is ground to 400 orders, adds together with auxiliary agent in the material of (2), after being uniformly mixed, through compression molding, high temperature sintering, machining and get final product.
The main technical details of material of the present invention is as follows:
Average wear factor is 2.3 * 10-5g/h, compressive strength 48MPa, compressive modulus of elasticity 1466MPa, flexural strength 18MPa, quality wear rate 0.21%, thermal expansivity (room temperature ~ 250 ℃) 11.6 (10-5/ ℃), permanent set 0.8%.
Use temperature scope :-60 ℃-300 ℃.
Claims (2)
1. the filling-modified polytetrafluoroethylmaterial material of gas-phase silica for a pump valve, it is characterized in that, this material is made by the raw material of following weight part: tetrafluoroethylene 100, gas-phase silica 1-2, magnesium hydroxide 2-3, tripoly phosphate sodium STPP 3-4, cobalt oxide 1-2, auxiliary agent 4-5;
Described auxiliary agent is made by the raw material of following weight part: attapulgite 30-35, clay 12-15, molybdic oxide 1-2, nanometer potter's clay 10-12, titanium dioxide 1-2, Silane coupling agent KH550 1-2, aluminium sesquioxide 3-4, zinc borate 1-2, lapis amiridis 3-4; Its preparation method is attapulgite, clay to be put into calcining furnace at 800-830 ℃, calcine 3-4 hour, takes out coolingly, pulverizes, and puts into 12-15% aqueous hydrochloric acid, soaks 1-2 hour, filters, and with clear water washing, dries and get final product; The powder of drying is mixed with other surplus stock, and grinding distribution 2-3 hour, obtains.
2. the filling-modified polytetrafluoroethylmaterial material of gas-phase silica for a kind of pump valve as claimed in claim 1, its production technique is:
(1) tetrafluoroethylene is pulverized standby;
(2) material of (1) is mixed with gas-phase silica, magnesium hydroxide, cobalt oxide, in water medium, be ground to 200-400 order, the powder dry for standby obtaining;
(3) tripoly phosphate sodium STPP is ground to 200-400 order, adds together with auxiliary agent in the material of (2), after being uniformly mixed, through compression molding, high temperature sintering, machining and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696682.XA CN103756212A (en) | 2013-12-18 | 2013-12-18 | Gas phase white carbon black filled and modified polytetrafluoroethylene material for pumps and valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696682.XA CN103756212A (en) | 2013-12-18 | 2013-12-18 | Gas phase white carbon black filled and modified polytetrafluoroethylene material for pumps and valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103756212A true CN103756212A (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310696682.XA Pending CN103756212A (en) | 2013-12-18 | 2013-12-18 | Gas phase white carbon black filled and modified polytetrafluoroethylene material for pumps and valves |
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| CN (1) | CN103756212A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063884A (en) * | 2020-09-16 | 2020-12-11 | 海安县恒益滑动轴承有限公司 | Carbon brush holder and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560128A (en) * | 2004-02-26 | 2005-01-05 | 上海高分子材料研究开发中心 | High wear-resisting composite material of strenthen polytetrafuoro ethylene and fiber rod stone kind clay and preparation process and application thereof |
| CN1786070A (en) * | 2005-11-24 | 2006-06-14 | 中国科学技术大学 | High abrasive resistance poly tetra fluoro ethylene composite material and its preparation method |
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2013
- 2013-12-18 CN CN201310696682.XA patent/CN103756212A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560128A (en) * | 2004-02-26 | 2005-01-05 | 上海高分子材料研究开发中心 | High wear-resisting composite material of strenthen polytetrafuoro ethylene and fiber rod stone kind clay and preparation process and application thereof |
| CN1786070A (en) * | 2005-11-24 | 2006-06-14 | 中国科学技术大学 | High abrasive resistance poly tetra fluoro ethylene composite material and its preparation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063884A (en) * | 2020-09-16 | 2020-12-11 | 海安县恒益滑动轴承有限公司 | Carbon brush holder and preparation method thereof |
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Application publication date: 20140430 |