CN105014979A - Production method for PTFE (polytetrafluoroethylene) Pall ring product - Google Patents
Production method for PTFE (polytetrafluoroethylene) Pall ring product Download PDFInfo
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- CN105014979A CN105014979A CN201510389035.3A CN201510389035A CN105014979A CN 105014979 A CN105014979 A CN 105014979A CN 201510389035 A CN201510389035 A CN 201510389035A CN 105014979 A CN105014979 A CN 105014979A
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Abstract
The invention discloses a production method for a PTFE (polytetrafluoroethylene) Pall ring product. The method comprises the following steps: raw materials are mixed and stirred uniformly; a Pall ring mould is selected; the raw materials are extruded through an extruder; demoulding processing is performed; the materials are sintered in a heating furnace; secondary pressure treatment is performed; die punching operation is performed, so that windows are punched in the Pall ring; the Pall ring product is subjected to polishing operation; and the finished product is subjected to cutting treatment. The production method for the PTFE (polytetrafluoroethylene) Pall ring product disclosed by the invention is simple in process; meanwhile, the operation efficiency is high; the produced Pall ring packing can meet requirement of chemical plants, pharmaceutical plants and water treatment systems.
Description
Technical field
The present invention relates to fluorine plastic product manufacture field, particularly relate to a kind of polytetrafluoroethylene (PTFE) Pall ring production of articles method.
Background technology
Polytetrafluoroethylene (PTFE), english abbreviation PTFE, is commonly called as King, is that one employs fluorine and replaces poly macromolecular material, have anti-various organic solvent, high temperature resistant, corrosion resistant characteristic, is widely used in various seal for pipe joints goods, with Pall ring in reaction tower, grip ring altogether, Raschig ring, packing ring field.
Polytetrafluoroethylene (PTFE) has the larger coefficient of expansion than metal material, and heatproof is higher than generic engineering plastics, adopt traditional blowing, it is more difficult that injection moulding process produces polytetrafluoroethylene (PTFE), and the fluoroplastics coefficient of expansion is large, molding post-shrinkage ratio is large, the invention provides a kind of polytetrafluoroethylene (PTFE) Pall ring production of articles method, technique is relatively easy for this reason, makes the Pall ring goods produced meet absorption tower simultaneously, exchange column requirement, Pall ring intensity is large simultaneously.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of production method of polytetrafluoroethylene (PTFE) Pall ring goods, and technique is simple, and the Pall ring even density of production, quality is good.
A kind of described polytetrafluoroethylene (PTFE) Pall ring production of articles method, comprises the following steps:
The first step: raw material mixes, selects polytetrafluoroethylene (PTFE) to mix with polyparaphenylene phenol mixed material, and adds glass fibre, molybdenum bisuphide filler, fatty acid amide.
Wherein, polyparaphenylene phenol is wear-resisting, encapsulant ideal in the industries such as metallurgy, chemical industry, high life, high temperature resistant, simultaneously, polyparaphenylene Heat stability is good, corrosion resistance, self-lubricating property is better than molybdenum bisuphide and graphite, the strand of PPL, due to very large rigidity and regularity, make it cannot not be molten insoluble, self machine-shaping difficulty.
A kind of optimal technical scheme, the mass percent shared by described polytetrafluoroethylene (PTFE) is 60%-85%, polyparaphenylene phenol 5%-10%, glass fibre 3%-5%, molybdenum bisuphide 1%-3%, and fatty acid amide is 1%.
Second step: the compound of the first step is stirred, and choose Pall ring mould, in Pall ring mould, carry out preformed process, compound is put into extruder extrude, injection speed should be slightly slow, and the dwell time is unsuitable oversize, forms pre-shaped articles closely.
A kind of optimal technical scheme, double screw extruder selected by described extruder, and extruder heater adopts gun-metal, and barrel and screw rod adopt high temperature resistant, corrosion-resistant, wear-resisting nichrome cylinder.
3rd step, carries out demoulding process after mold pressing in second step being completed.
4th step: after the demoulding, load in heating furnace and sinter, carry out carbonization treatment, eliminate stress, pressure 8-15MPA, sintering process adopts and progressively heats up, intensification per hour about 15-20 DEG C before 380 DEG C, burn 380 DEG C transparent after, constant temperature 5-7 hour, to ensure the size of goods, require cylinder two diameter the same and tongue piece not modification.
5th step: secondary pressurized process is carried out to the Pall ring goods in the 4th step, pressure 8-15MPA.
6th step: carry out punch die operation after having sintered, for Pall ring punching press is windowed, fenestra is 4-12, difference according to requirements, output the fenestra (square type or round) that often kind of specification reaches the required different size of traffic requirement, general perforated area accounts for about 30% of the post jamb gross area.
7th step: sanding operation is carried out to the Pall ring goods of the 6th step, makes smooth surface, corrugationless.
8th step: finished product, carries out machining to finished product, completes client's Pall ring requirement for height as requested.
The invention has the beneficial effects as follows: a kind of polytetrafluoroethylene (PTFE) Pall ring of the present invention production of articles method, technique is simple, and operating efficiency is high simultaneously, and the Pall ring filler of production can be applicable to chemical plant, pharmaceutical factory, the requirement of water treatment system.
Detailed description of the invention
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
A kind of described polytetrafluoroethylene (PTFE) Pall ring production of articles method, comprises the following steps:
The first step: raw material mixes, selects polytetrafluoroethylene (PTFE) to mix with polyparaphenylene phenol mixed material, and adds glass fibre, molybdenum bisuphide filler, fatty acid amide.
Wherein, polyparaphenylene phenol is wear-resisting, encapsulant ideal in the industries such as metallurgy, chemical industry, high life, high temperature resistant, simultaneously, polyparaphenylene Heat stability is good, corrosion resistance, self-lubricating property is better than molybdenum bisuphide and graphite, the strand of PPL, due to very large rigidity and regularity, make it cannot not be molten insoluble, self machine-shaping difficulty.
A kind of optimal technical scheme, the mass percent shared by described polytetrafluoroethylene (PTFE) is 60%-85%, polyparaphenylene phenol 5%-10%, glass fibre 3%-5%, molybdenum bisuphide 1%-3%, and fatty acid amide is 1%.
Second step: the compound of the first step is stirred, and choose Pall ring mould, in Pall ring mould, carry out preformed process, compound is put into extruder extrude, injection speed should be slightly slow, and the dwell time is unsuitable oversize, forms pre-shaped articles closely.
A kind of optimal technical scheme, double screw extruder selected by described extruder, and extruder heater adopts gun-metal, and barrel and screw rod adopt high temperature resistant, corrosion-resistant, wear-resisting nichrome cylinder.
3rd step, carries out demoulding process after mold pressing in second step being completed.
4th step: after the demoulding, load in heating furnace and sinter, carry out carbonization treatment, eliminate stress, pressure 8-15MPA, sintering process adopts and progressively heats up, intensification per hour about 15-20 DEG C before 380 DEG C, burn 380 DEG C transparent after, constant temperature 5-7 hour, to ensure the size of goods, require cylinder two diameter the same and tongue piece not modification.
5th step: secondary pressurized process is carried out to the Pall ring goods in the 4th step, pressure 8-15MPA.
6th step: carry out punch die operation after having sintered, for Pall ring punching press is windowed, fenestra is 4-12, difference according to requirements, output the fenestra (square type or round) that often kind of specification reaches the required different size of traffic requirement, general perforated area accounts for about 30% of the post jamb gross area.
7th step: sanding operation is carried out to the Pall ring goods of the 6th step, makes smooth surface, corrugationless.
8th step: finished product, carries out machining to finished product, completes client's Pall ring requirement for height as requested.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a polytetrafluoroethylene (PTFE) Pall ring production of articles method, is characterized in that, comprising: following steps:
The first step: raw material mixes, selects polytetrafluoroethylene (PTFE) to mix with polyparaphenylene phenol mixed material, and adds glass fibre, molybdenum bisuphide filler, fatty acid amide;
Second step: the compound of the first step is stirred, and choose Pall ring mould, in Pall ring mould, carry out preformed process, compound is put into extruder and extrudes, form pre-shaped articles closely;
3rd step, carries out demoulding process after mold pressing in second step being completed;
4th step: after the demoulding, load in heating furnace and sinter, carry out carbonization treatment, eliminate stress, pressure 8-15MPA, sintering process adopts and progressively heats up, intensification per hour about 15-20 DEG C before 380 DEG C, burn 380 DEG C transparent after, constant temperature 5-7 hour, to ensure the size of goods, require cylinder two diameter the same and tongue piece not modification;
5th step: secondary pressurized process is carried out to the Pall ring goods in the 4th step, pressure 8-15MPA;
6th step: carry out punch die operation after having sintered, for Pall ring punching press is windowed, fenestra is 4-12;
7th step: sanding operation is carried out to the Pall ring goods of the 6th step;
8th step: finished product, carries out machining to finished product, completes client's Pall ring requirement for height as requested.
2. polytetrafluoroethylene (PTFE) Pall ring production of articles method according to claim 1, is characterized in that, in the described first step, mass percent shared by polytetrafluoroethylene (PTFE) is 60%-85%, polyparaphenylene phenol 5%-10%, glass fibre 3%-5%, molybdenum bisuphide 1%-3%, fatty acid amide is 1%.
3. polytetrafluoroethylene (PTFE) Pall ring production of articles method according to claim 1, is characterized in that, in described second step, double screw extruder selected by described extruder, and extruder heater adopts gun-metal, and barrel and screw rod adopt high temperature resistant, corrosion-resistant, wear-resisting nichrome cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510389035.3A CN105014979A (en) | 2015-07-06 | 2015-07-06 | Production method for PTFE (polytetrafluoroethylene) Pall ring product |
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| CN201510389035.3A CN105014979A (en) | 2015-07-06 | 2015-07-06 | Production method for PTFE (polytetrafluoroethylene) Pall ring product |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498309A (en) * | 2015-12-15 | 2016-04-20 | 苏州崇恩模塑有限公司 | Manufacturing technology for inclined pipe filler used for sedimentation basin |
| CN108799055A (en) * | 2018-06-08 | 2018-11-13 | 安徽共青机电装备制造有限公司 | A kind of non-lubricated compressor guide ring |
| CN110539438A (en) * | 2019-09-06 | 2019-12-06 | 江苏亿豪塑业有限公司 | production method of polytetrafluoroethylene pall ring product |
| CN113232339A (en) * | 2021-06-03 | 2021-08-10 | 深州市远征氟塑料有限公司 | Preparation method of polytetrafluoroethylene curved gasket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003013A (en) * | 2006-01-18 | 2007-07-25 | 徐关兴 | Novel Ball-ring, and process for making same |
-
2015
- 2015-07-06 CN CN201510389035.3A patent/CN105014979A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003013A (en) * | 2006-01-18 | 2007-07-25 | 徐关兴 | Novel Ball-ring, and process for making same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498309A (en) * | 2015-12-15 | 2016-04-20 | 苏州崇恩模塑有限公司 | Manufacturing technology for inclined pipe filler used for sedimentation basin |
| CN108799055A (en) * | 2018-06-08 | 2018-11-13 | 安徽共青机电装备制造有限公司 | A kind of non-lubricated compressor guide ring |
| CN110539438A (en) * | 2019-09-06 | 2019-12-06 | 江苏亿豪塑业有限公司 | production method of polytetrafluoroethylene pall ring product |
| CN113232339A (en) * | 2021-06-03 | 2021-08-10 | 深州市远征氟塑料有限公司 | Preparation method of polytetrafluoroethylene curved gasket |
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Application publication date: 20151104 |