CN1061581C - Teflon fabrics and its application - Google Patents
Teflon fabrics and its application Download PDFInfo
- Publication number
- CN1061581C CN1061581C CN95104896A CN95104896A CN1061581C CN 1061581 C CN1061581 C CN 1061581C CN 95104896 A CN95104896 A CN 95104896A CN 95104896 A CN95104896 A CN 95104896A CN 1061581 C CN1061581 C CN 1061581C
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- teflon
- resin
- fabrics
- emery wheel
- fabric
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Abstract
The present invention relates to a Teflon fabric. The main ingredients and the contents of the Teflon fabric comprise 30% to 70% of Teflon resin and 70% to 30% of dilute fabrics with glass fiber. The Teflon fabric with the mesh number of 2 to 12 meshes/cm is sintered and prepared at shaping temperature by dipping and drying. When a shock insulator is used for sintering a resin sheet of grinding wheels, the shock insulator is placed between the grinding wheels. The Teflon fabric has the advantages of good ventilation property, no adhesion, high temperature resistance, etc. because of the proper meshes and the used material. Thus, the obtained grinding wheels have moderate and smooth roughness, and the rate of finished products is enhanced to more than 95% from 85%.
Description
The present invention relates to a kind of advanced composite material (ACM), particularly relate to a kind of teflon fabrics.
At present the product category of Teflon resin impregnation glass fibre is more in the world, but its combining structure is dense non-porous all, and is used for occasions such as building film material, mechanical transmission band, package packing machine seal more; Owing to is the restriction of dense non-porous on its combining structure, does not see as yet and be used for patent documentation and the report that resin wheel burns till industry.During domestic manufacturing resin flake emery wheel is crossed, generally adopt metal material such as iron plate, aluminium sheet or the waste and old emery wheel dottle pin when firing new emery wheel, but all have yield rate lower (average 85%), easy warpage and do not have defective such as intact cutting surface; As: when using iron plate as dottle pin, because adhesion between emery wheel that burns till and the iron plate, operating personnel often will beat vibrations when dismounting, undermine finished product, and iron plate is more yielding, make emery wheel also produce the distortion warpage thereupon; Use the old sand crop rotation to fire dottle pin, also big except that above-mentioned shortcoming because of its volume and thermal capacity, make batch and fire efficient and all greatly reduce; In addition, the wheel face of firing is smooth, has weakened stock-removing efficiency, has reduced the function of use of emery wheel.In sum, the shortcoming that exists in the prior art becomes a difficult problem that hinders raising emery wheel quality.
The objective of the invention is to adopt a kind of novel teflon fabrics, its mesh number is between 2-12 order/cm, form the dottle pin when being used to fire the resin flake emery wheel through dipping, oven dry, typing sintering, because suitable mesh count makes it ventilative and flexibility, adhesion, advantage such as high temperature resistant arranged, shortcomings such as above-mentioned prior art adhesion, buckling deformation, surface be too smooth have been overcome, produced beyond thought result of use, the quality of resin flake emery wheel is improved.The expert evaluation surface roughness is reasonable, and degree of unbalancedness meets the regulation of GB2492-84 " the grinding wheel static balancing method of inspection and uneven numerical value " fully, the cutting efficiency height, and flatness meets the regulation of GB9202-88 " inspection method of grinding tool ".According to statistics, yield rate is increased to more than 95%.
Fig. 1 is the flow sheet of teflon fabrics, existing technology contents and the application that teflon fabrics is described in detail in detail in conjunction with the accompanying drawings.
In order to solve the problem that prior art exists in the resin thin slice grinding wheel sintering procedure, the present invention Adopt teflon fabrics as dottle pin. Teflon fabrics mainly comprises Teflon resin and glass The rare fabric of glass fiber also comprises other auxiliary agents. The key component percentage by weight of teflon fabrics:
Teflon resin 30%～70%
The rare fabric 70%～30% of glass fibre
The component of the Teflon resin that is adopted mainly comprises: auxiliary agents such as polytetrafluoroethyldispersion dispersion, deionized water and activating agent, defoamer and colouring agent, and its weight percentages of components is respectively:
Polytetrafluoroethyldispersion dispersion 25%～65%
Deionized water 30%～55%
Activating agent 3%～10%
Defoamer 1%～10%
The percentage by weight 0～2.5% of rare its alkali metal oxide of fabric of glass fibre that colouring agent 1%～5% is adopted; Content is very low, makes to make product and can bear required high temperature; Contain the auxiliary agent that is enough to make Teflon resin and the rare fabric strong bonded of glass fibre in addition, as shown in Figure 1, polytetrafluoroethyldispersion dispersion be mixed with the state of the aqueous solution, make manipulate very convenient.Add deionized water with polytetrafluoroethylene (PTFE) and be mixed with required polytetrafluoroethylsolution solution according to the listed ratio of last table.Add auxiliary agents such as activating agent, defoamer and colouring agent again.After mixing, stir elimination bubble and impurity gently.
Dipping process carries out under the space that purifies, normal temperature.The temperature that must guarantee dipping workshop section is no more than 35 ℃, and impregnating speed is 0.1～1.0 meter/minute.
Cloth cover behind the dipping requires resin even, and color is pure, surfacing.Enter 100 ℃～200 ℃ drying in oven, sintering typing in 250 ℃ to the 400 ℃ normal pressure casees.
According to the thickness requirement of coating, can be repeatedly alternating impregnating and drying course repeatedly, until the thickness that meets the requirements.
Through the grey cloth of oven dry, in 250 ℃～400 ℃ normal pressure casing, carry out the sintering typing, sintering time generally can be selected 0.2～2.0 hour, after the sintering typing, just can obtain required teflon fabrics.
Cutting according to instructions for use, can be circle, square or other Any shape.
The surface of Teflon resin impregnation at the rare fabric of glass fibre, form the mesh number at 2-12 order/cm, drying and under setting temperature sinter molding, and the dottle pin when this teflon fabrics is used to fire the resin flake emery wheel, produce beyond thought effect, improve the emery wheel quality.
The embodiment of the invention and application thereof are described in detail in detail below:
Get the rare fabric 100m of glass fibre, polytetrafluoroethyldispersion dispersion 50kg, auxiliary agent mainly comprise activating agent 3kg, defoamer 2kg, colouring agent 5kg, deionized water 50kg, adopt hydrometer method to measure concentration, it is that 40 to 50% the aqueous solution is as dipping that the Teflon resin is made into percentage by weight.The temperature of dipping workshop section is no more than 35 ℃, be not less than 5 ℃, impregnating speed is 0.1～1.0 meter/minute, and it is even to flood the back resin, the cloth cover that color is pure is put into baking oven dries under 100 ℃ to 200 ℃ conditions, and floods repeatedly and dry to closing the thickness that symbol requires; The grey cloth of the thickness that meets the requirements after will drying again is placed on and carries out the sintering typing in 250 ℃ to the 400 ℃ normal pressure casees, and the time is 0.2 to 2.0 hour, just makes required teflon fabrics after the sintering typing.With the dottle pin of prepared teflon fabrics when firing the resin flake emery wheel, be placed between the emery wheel.Because the mesh number is between 2-12 order/cm, material therefor can be high temperature resistant, thus good permeability when firing, adhesion when dismantling behind the sintering, obtained emery wheel roughness is moderate, has obtained beyond thought effect, and yield rate is brought up to more than 95% from 85%.After emery wheel compression moulding, order according to emery wheel, dottle pin, iron (aluminium) plate, dottle pin, emery wheel, the perhaps order of emery wheel, dottle pin, emery wheel, the mixed form of two orders perhaps, be arranged in order, stack the reasonable altitudes that can hold, push firing furnace and carry out burning till of emery wheel to the emery wheel firing furnace.
After burning till end, from stove, take out.Divide pile to put emery wheel, dottle pin, iron (aluminium) plate, the finishing using of one-period.Dottle pin can use repeatedly in this order.
Claims (2)
1, a kind of teflon fabrics, main is the proportioning of Teflon resin 30% to 70%, the rare fabric 70% to 30% of glass fibre by component weight percent content by Teflon resin and the rare fabric of glass fibre, make through the production procedure of dipping, oven dry, sintering typing, it is characterized in that the mesh number of the teflon fabrics made is 2-12 order/cm.
2, a kind of application for teflon fabrics as claimed in claim 1 is characterized in that the dottle pin when the resin flake emery wheel is fired in conduct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95104896A CN1061581C (en) | 1995-05-15 | 1995-05-15 | Teflon fabrics and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95104896A CN1061581C (en) | 1995-05-15 | 1995-05-15 | Teflon fabrics and its application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1135952A CN1135952A (en) | 1996-11-20 |
| CN1061581C true CN1061581C (en) | 2001-02-07 |
Family
ID=5075292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95104896A Expired - Lifetime CN1061581C (en) | 1995-05-15 | 1995-05-15 | Teflon fabrics and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061581C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814764A (en) * | 2012-08-01 | 2012-12-12 | 郑州森下磨料磨具有限公司 | Production process of irregular sawtooth-shaped sheet grinding wheel |
| CN103088638A (en) * | 2012-12-04 | 2013-05-08 | 靖江市星杰电力设备制造有限公司 | New processing technology of Teflon high-temperature cloth |
| CN106555339A (en) * | 2016-11-08 | 2017-04-05 | 扬州东润新材料科技有限公司 | A kind of high temperature resistant not preparation of sticky cloth and application process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025930A2 (en) * | 1979-09-20 | 1981-04-01 | Siemens Aktiengesellschaft | Diaphragms for electrochemical cells and their manufacture |
| EP0288214A2 (en) * | 1987-04-21 | 1988-10-26 | W.L. Gore & Associates, Inc. | Coated products |
| CN1077412A (en) * | 1992-04-18 | 1993-10-20 | 洪重光 | Teflon fiber filter material production technique and equipment |
-
1995
- 1995-05-15 CN CN95104896A patent/CN1061581C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025930A2 (en) * | 1979-09-20 | 1981-04-01 | Siemens Aktiengesellschaft | Diaphragms for electrochemical cells and their manufacture |
| EP0288214A2 (en) * | 1987-04-21 | 1988-10-26 | W.L. Gore & Associates, Inc. | Coated products |
| CN1077412A (en) * | 1992-04-18 | 1993-10-20 | 洪重光 | Teflon fiber filter material production technique and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1135952A (en) | 1996-11-20 |
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| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 20030923 Decision number of declaring invalidation: 5493 |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150515 Granted publication date: 20010207 |
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Addressee: Guo Xiaoming Document name: Notification of Expiration of Patent Right Duration |