CN102070844A - Rubber flapper material and preparation method of rubber flapper - Google Patents
Rubber flapper material and preparation method of rubber flapper Download PDFInfo
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- CN102070844A CN102070844A CN2010105850979A CN201010585097A CN102070844A CN 102070844 A CN102070844 A CN 102070844A CN 2010105850979 A CN2010105850979 A CN 2010105850979A CN 201010585097 A CN201010585097 A CN 201010585097A CN 102070844 A CN102070844 A CN 102070844A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a rubber flapper material and a preparation method of a rubber flapper. The rubber flapper material comprises the following components in parts by weight: 40-50 parts of rubber base material, 2-10 parts of active agent, 0-5 parts of tackifying resin, 5-15 parts of softener, 20-35 parts of reinforcing agent, 10-30 parts of filler, 1-5 parts of promoter and 0.2-1.2 parts of vulcanizing agent. The rubber flapper of the invention has the advantages of good tightness, corrosion resistance, aging resistance, chlorine resistance, ammonia resistance, good water-saving performance and the like; after the proportion of each component in the material is optimized, the falling speed of the flapper can not be affected and the displacement of the whole water closet can not be affected. The rubber flapper of the invention has good permanent water-proof sealing effect, is convenient to tone and install and can be disassembled and changed at random; and the rubber flapper is matched with the water tank accessories of the water closet and has the effects of saving water and preventing leakage.
Description
Technical field
The present invention relates to the bathroom accessory system elastomeric material, relate in particular to the preparation method of a kind of rubber bat cover material and this rubber bat lid.
Background technology
The rubber bat lid is the crucial accessory that uses in the cistern, it is easy for installation, can arbitrarily dismantle and change, the permanent anti-seeping water-lute is effective, and toning is convenient, be applicable to that the toilet cistern fittings plays water saving, leakage-preventing effect, the characteristic that requires of product is: in the special test soln of regulation, under the constant temperature of 50～80 ℃ of regulations, in the rubber product soaking solution, test duration is 〉=5 time-of-weeks, and the volume change of rubber≤25% is basic acceptance condition.
At present, the technology and the product of domestic rubber bat lid relatively lack, high-grade toilet is to rely on expensive imported product basically, in, low-grade toilet is to clap lid or flexible PVC is clapped lid+silica gel sealing pad with General Purpose Rubber basically, the product of these two kinds of materials more and more can not satisfy the demand in market, mainly be because of the price height, work-ing life is short, and cost is also quite high comparatively speaking.The product strict to use properties, life requirements relies on external import substantially, and prices are rather stiff.
Enhancing along with people's environmental consciousness, rationally, effectively utilize the ball resource, for mankind's bathroom accessory system used in everyday provides long-acting, high performance product, be a job that shoulders heavy responsibilities, the research and development of good bathroom material, both can guarantee health of human body, can reduce the environmental resources utilization again, reduce discharging.Therefore, my department will research and develop the rubber bat cover material of excellent property and energy-conserving and environment-protective and study for a long time as an important topic, and this important function for of research can also fill the domestic gaps, and is significant.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide that a kind of mechanical property is good, good seal performance, corrosion-resistant, ageing-resistant, the ammonia solution of anti-chlorine, and the rubber bat cover material of water-saving and environmental protection.
Another object of the present invention is to provide the method for utilizing above-mentioned rubber bat cover material to prepare the rubber bat lid.
Above-mentioned purpose of the present invention is achieved by following scheme:
A kind of rubber bat cover material comprises each components of following parts by weight:
0.2～1.2 part of 40～50 parts of rubber substrates, 2～10 parts of promoting agents, 0～5 part of tackifying resin, 5～15 parts of tenderizers, 20～35 parts of strengthening agents, 10～30 parts of fillers and vulcanizing agent; Wherein,
Described rubber substrate adopts terpolymer EP rubber, silica gel or styrene-butadiene rubber(SBR);
Described promoting agent is zinc oxide or stearic acid or both mixing;
Described tackifying resin is terpine resin, resol, petroleum resin, coumarone indene resin or rosin fat;
Described tenderizer is paraffin oils, rubber softening oil, aromatic hydrocarbon oil, naphthenic oil or Vaseline.
In addition, used strengthening agent is the mixing of any one or both in carbon black or the white carbon black, and particle diameter is 500～2000 orders; Used filler is barium sulfate, talcum powder, lime carbonate or potter's clay, and particle diameter is at 500～5000 orders; Described promotor is any one or two kinds and the two or more mixing in thiazoles, dithiocarbamate(s), amine, guanidine class, sulfenamide or the thiuram type accelerator etc.; Used vulcanizing agent is one or both and the two or more mixing in element sulphur, organo-peroxide, metal oxide, sulfocompound or the resene compound.
The preparation method of a kind of rubber bat lid, this method adopt above-mentioned rubber bat cover material, prepare as follows and get:
Step 1. Banbury mixer batch mixing
After Banbury mixer is warming up to 50～80 ℃, drop into the rubber base-material, stirring make the rubber base-material softening and evenly after, add promoting agent, stirring adds tackifying resin, strengthening agent, filler and tenderizer after promoting agent is uniformly dispersed again in the rubber base-material, be stirred to be uniformly dispersed, discharging obtains the flexible glue material after cooling off, park 24h; Adopting mixer mixing rubber, is for the various Synergist S-421 95s of better the promotion dispersion in rubber, especially strengthening agent, stopping composition being uniformly dispersed in rubber, also shortens the glue stuff compounding time simultaneously;
The step 2. machine batch mixing of beginning to pratise
Adopt the mill step 1 preparation gained flexible glue material that eases back, add promotor, guarantee under lower temperature, blending dispersion promotor to whole system is uniformly dispersed, avoid causing the sizing material incipient scorch, under 0.5mm roll spacing condition because melting temperature is too high, thin-pass, triangle bag 5 times obtain stand-by elastomeric material;
Step 3. compression molding, cooling and mould unloading
The stand-by elastomeric material of step 2 preparation gained under 150～180 ℃ of conditions of molding, is put into mould, in 5～20min, under 18～22Mpa pressure, finish the rubber cross moulding, thereby prepare required rubber bat lid.
Compared with prior art, the present invention has following beneficial effect:
1. rubber bat cover material of the present invention, the selection of its component and consumption be all by obtaining after a large amount of experiments, has advantages such as corrosion-resistant, ageing-resistant, ammonia of anti-chlorine and mechanical property be good;
2. rubber bat of the present invention lid has advantages such as good airproof performance, corrosion-resistant, ageing-resistant, the ammonia of anti-chlorine and water-saving performance are good, and after the proportion process of each component is optimized in the material, can not have influence on and clap the speed that lid falls, can not have influence on the water displacement of whole toilet;
3. rubber bat of the present invention lid is easy for installation, can arbitrarily dismantle and change, and the permanent anti-seeping water-lute is effective, and toning is convenient, is applicable to that the toilet cistern fittings plays water saving, leakage-preventing effect.
Embodiment
The inventor is by adjusting, test hundreds of formulation composition, outcome research is found: press the design of General Purpose Rubber formulation composition and clap the lid prescription, its volume change under the chloramine solution test condition, basically all 40～60%, by the testing standard requirement, the volume change greater than 35% belongs to Marginal, and, then be Poor greater than 43.5% volume change.Therefore, adopt existing regular convention formula can't make prepared rubber bat cover the test of anti-chloramine solution, only less than 21% volume change, just reach the Good rank, best rank then is less than 13%, is Excellent.Therefore must select to be difficult to the material that reacts with chloramine solution, the maintenance product does not participate in solution reaction and structure changes, just can guarantee the stable of shape of product, do not have influence on the water displacement of sealing property and toilet, thereby assurance toilet basic function does not change or causes water displacement to exceed standard, the waste resource.
In addition, the inventor also discovers:
1. synthetic rubber does not possess basically from reinforcement, need to add strengthening agent, improve rubber intensity, to satisfy product structure, performance requriements, in addition, the rubber bat lid in the preparation, normally adopt mold pressing or injection molding mode to produce, the metal inner core of a same shape of cryptomere inner chamber is arranged, behind the sulfidization molding on the mould, must from product, take out inner core, generally speaking, product causes hot tear crack easily when depanning just, as at this moment taking out inner core immediately, can cause product to break, scrap; So need to adopt strengthening agent, to improve rubbery intensity and reach more than the certain value, when guaranteeing that mold core takes out from product, the unlikely product that causes breaks;
2. when material is selected, must consider the combination stability of multiple interpolation material and rubber substrate, the stability of formed rubber structure after the moulding, avoid free molecule to participate in chemical reaction, therefore, wanted the good rubber bat lid of obtained performance, must be optimized each material addition, and in the General Purpose Rubber prescription, the material quantity scope of interpolation is bigger, is not subjected to the restriction of solution chemistry reaction;
3. the rubber bat lid is as a sealing prod, reach than higher sealing property, necessarily require rubber that higher deformation is arranged, to the contact surface of sealing, can well coincide, and under hydraulic pressure, guarantee to seal water-tight, therefore, rubber bat of the present invention is covered its material selection will note adjusting a suitable rubber hardness, guarantee to clap lid and can closely cooperate, carry out the test performance of anti-the chloramines simultaneously, do not change with changes in hardness with the plane that is contacted;
4. rubber bat cover material of the present invention, the proportion of its each component relate to claps the whole weight in water of lid, has influence on and claps the speed that lid falls, and then involve the water displacement of whole toilet, therefore needs especially optimization design;
5. from the angle of material generation chemical reaction, select to be difficult to the material that reacts with chloramine solution, as strengthening agent, weighting agent and promotor etc., keep the stability of product as far as possible, this is a very The key factor.
In view of above-mentioned some, the inventor by a large amount of conceptual designs and test, data-optimized after, obtained design of the present invention.A kind of rubber bat cover material comprises each components of following parts by weight:
0.2～1.2 part of 40～50 parts of rubber substrates, 2～10 parts of promoting agents, 0～5 part of tackifying resin, 5～15 parts of tenderizers, 20～35 parts of strengthening agents, 10～30 parts of fillers and vulcanizing agent.
Above-mentioned rubber substrate adopts terpolymer EP rubber (EPDM), silica gel or styrene-butadiene rubber(SBR) (SBR), possesses better weather, is common sanitaryware rubber substrate commonly used.
The effect of above-mentioned promoting agent is to reduce accelerator level or shorten curing time, and promoting agent of the present invention adopts the mixing of zinc oxide or stearic acid or both arbitrary proportions, and effect is excellent.
The effect of above-mentioned tackifying resin is tackify and adjusts rubber item hardness, can select terpine resin, resol, petroleum resin, coumarone indene resin or rosin fat; Preferred terpine resin mainly is at selected terpolymer EP rubber, and it is fit to use the paraffinic hydrocarbons grease, just can not separate out at product surface; Above-mentioned tackifying resin can determine whether according to the kind of rubber substrate adding, and as when rubber substrate is selected silica gel or styrene-butadiene rubber(SBR), can add tackifying resin.
When above-mentioned tenderizer is selected, need consider the consistency of softening grease and rubber substrate, the color and the popularity of softening greasy color suitability, versatility and resource of goods, therefore the contriver by conceptual design and experimental study after, tenderizer adopts petroleum line softener, as paraffin oils, rubber softening oil, aromatic hydrocarbon oil, naphthenic oil or Vaseline.
The effect of above-mentioned strengthening agent is to increase rubbery intensity, and strengthening agent can be selected carbon black or white carbon black, and particle diameter is at 500～2000 orders, but carbon black and white carbon black can singly be used the also also usefulness of arbitrary proportion, all can realize the present invention, decide on product colour.
Above-mentioned filler can adopt those skilled in the art to use always, and as barium sulfate, talcum powder, lime carbonate or potter's clay etc., but the particle diameter of filler must be at 500～5000 orders, preferred 3000～5000 orders; The mixing of filler preferably barium sulfate or talcum powder or both arbitrary proportions; Because filler is a white series, can be according to client's hobby with product furnishing shades of colour.
The effect of above-mentioned promotor is to shorten the rubber-moulding time or reduce mold temperature, the rubber that adds promotor, can the accelerated cure agent and rubber molecule between crosslinking reaction, reach the shortening molding time, reduce mold temperature, save energy, improve the purpose of output, therefore promotor of the present invention adopts those skilled in the art to carry out rubber selected promotor commonly used when preparing, as thiazoles, dithiocarbamate(s), amine, the guanidine class, the mixing of any one in sulfenamide or the thiuram type accelerator etc. or two kinds and two or more arbitrary proportions all can realize the present invention.
The effect of above-mentioned vulcanizing agent is to play with the rubber cross reaction to form tridimensional network.The inventor is by the vulcanizing agent that adopts usually sorts to having now, deal adjustment test, in employing element sulphur, organo-peroxide, metal oxide, sulfocompound or the resene compound one or both and two or more mixing all can realize the present invention.
In the above-mentioned rubber bat cover material; rubber substrate; promoting agent; tackifying resin; tenderizer; strengthening agent; the selection of filler and promotor can realize the present invention; but rubber bat cover material of the present invention; can also be according to the concrete needs of implementing; add some those skilled in the art again when preparation rubber bat lid; the auxiliary of being used always; comprising the tinting material that satisfies the product colour requirement; the anti-aging agent that delays ageing of rubber and provide protection is waited for; these subsidiary material; as anti-aging agent, in the design rubber compounding, must consider to add substantially; to guarantee the life-span of rubber in the certain environment use; its kind; deal is looked used material; color; environment for use requires to select to add, and the interpolation of these auxiliarys makes rubber bat lid of the present invention applicable to more many-sided demand.Below in conjunction with specific embodiment the present invention is done description further, but specific embodiment is not done any qualification to the present invention.
Embodiment 1
The rubber bat cover material of present embodiment comprises each components of following parts by weight:
40 parts of rubber substrates;
2 parts of promoting agents;
3 parts of tackifying resins;
15 parts of tenderizers;
25 parts of strengthening agents;
13 parts of fillers;
1.8 parts of promotor;
0.2 part of vulcanizing agent;
Above-mentioned rubber substrate adopts terpolymer EP rubber (EPDM); Promoting agent adopts zinc oxide and stearic acid; Tackifying resin adopts terpine resin; Tenderizer adopts paraffin oils; Strengthening agent adopts carbon black and white carbon black; Filler adopts 500～5000 purpose talcum powder; Promotor is adopted dithiocarbamate(s); Vulcanizing agent adopts sulphur.
The rubber bat of present embodiment lid prescription (called after Y3) is to adopt above-mentioned rubber bat cover material to prepare as follows and get:
Step 1. Banbury mixer batch mixing
After Banbury mixer is warming up to 50 ℃, drop into EPDM, stir 10min make the rubber base-material softening and evenly after, add promoting agent, stirring 5min is uniformly dispersed promoting agent in the rubber base-material, and then adds terpine resin, paraffin oils, white carbon black and 500～5000 purpose talcum powder, is stirred to be uniformly dispersed, discharging obtains the flexible glue material after cooling off, park 24h;
The step 2. machine batch mixing of beginning to pratise
Adopt mill recycling step 1 preparation gained flexible glue material, add promotor and vulcanizing agents such as dithiocarbamate(s), blending dispersion 10min, extremely whole system is uniformly dispersed, under 0.5mm roll spacing condition, and thin-pass, triangle bag each 5 times, slice obtains stand-by elastomeric material;
Step 3. compression molding, cooling and mould unloading
With the stand-by elastomeric material of step 2 preparation gained, weigh, put into mould, under 150～160 ℃ of conditions of molding, put into mould, in 20min, under the 19Mpa pressure, finish the rubber cross moulding, thereby prepare required rubber bat lid.
Present embodiment is prepared gained rubber bat lid carries out the test of following project:
(1)
PLUMBING STANDARD Number:The O300_083 test, volume change is answered the requirement of＜25% u s company;
(2) material object of simulation use carries out performing leak test one by one, under regulation water logging condition, in the specific time, the water droplet of leakage phenomenon must not be arranged;
(3) test equipment under the various extreme working conditionss of simulation is carried out tests such as water displacement, falling sphere time, its highest, minimum water displacement, and necessary limit value up to specification is not lost to guarantee water saving and product function.
Through test, present embodiment prepares gained rubber bat lid and all meets above-mentioned three requirement.
The mechanical property of present embodiment is as follows:
Rubber hardness: 50 ± 5A
Tensile strength at yield: 11 ± 1MPa
Tensile yield: 750 ± 50%
The rubber bat lid of present embodiment must carry out the chloramine solution test, be respectively by Guangdong letter power company and u s company laboratory, a medicine preparation, examination criteria by identical prepare the chloramines test data record that gained rubber bat lid (Y3) carries out to the implementation case.The result is shown in table 1 and 2.
Table 1 letter power laboratory Y3 chloramines test data
Table 2 U.S. laboratory Y3 chloramines test data
Above-mentioned letter power company and u s company's lab investigation data basically identical, the anti-chloramine solution rank of present embodiment rubber bat lid is near the Excellent level.
Embodiment 2
The rubber bat cover material of present embodiment comprises each components of following parts by weight:
45 parts of rubber substrates;
6 parts of promoting agents;
Tackifying resin 0;
10 parts of tenderizers;
25 parts of strengthening agents;
12 parts of fillers;
1.2 parts of promotor;
0.8 part of vulcanizing agent;
Above-mentioned rubber substrate adopts styrene-butadiene rubber(SBR); Promoting agent adopts zinc oxide; Tenderizer adopts rubber softening oil; Strengthening agent adopts carbon black and white carbon black and uses; Filler adopts barium sulfate and talcum powder, and particle diameter is 500～5000 orders; Promotor is adopted guanidine class and thiazoles and is used; Vulcanizing agent adopts sulfur-donor and sulphur and uses.
The rubber bat of present embodiment lid is to adopt above-mentioned rubber bat cover material to prepare as follows and get:
Step 1. Banbury mixer batch mixing
After Banbury mixer is warming up to 50 ℃, drop into styrene-butadiene rubber(SBR), the floating weight pressurization, stir 8min, after making the rubber base-material soften evenly, add promoting agent, stir 3min promoting agent is uniformly dispersed in the rubber base-material, add strengthening agent then, 5min is stirred in pressurization, continues to add 500～5000 purpose barium sulfate filler and rubber softening oils, is stirred to be uniformly dispersed, discharging is not added short elastomeric material after cooling off, park 24h;
The step 2. machine batch mixing of beginning to pratise
Adopt the mill short sizing material of step 1 preparation gained that eases back, add guanidine acclerators and vulcanizing agent, blending dispersion to whole system is uniformly dispersed, and under 0.5mm roll spacing condition, thin-pass, triangle bag each 5 times are obtained sheet as required, obtain stand-by elastomeric material;
Step 3. premolding
With the stand-by elastomeric material of step 2 preparation gained, in mill, ease back, extrude size, the satisfactory blob of viscose of weight through preform machine, after cooling, crossing parting agent, cooling, drying on storage rack.After 4 hours, can enter curing department and use.
Step 4. compression molding, cooling and mould unloading
Operator under 150～160 ℃ of conditions of molding, is put into mould with the sizing material of above-mentioned steps preparation, in 8～12min, under 18～19Mpa pressure, finishes the rubber cross moulding, thereby prepares required rubber bat lid.
Present embodiment 2 preparation gained elastomeric materials adopt every performance index of embodiment 1 to detect, and the result confirms, the elastomeric material of present embodiment, and it is good to have good anti-chloramine solution performance, good airproof performance, mechanics equally.
The mechanical property of present embodiment 2 is as follows:
Rubber hardness: 65 ± 5A
Tensile strength at yield: 11 ± 1MPa
Tensile yield: 350 ± 50%
The rubber bat lid of present embodiment must carry out the chloramine solution test, and letter power company is detected by Guangdong, and the result is as shown in table 3.
Table 3 letter power laboratory chloramines test data
| Volume change % | |
| Beginning | |
| First week | 7.9 |
| Second week | 14.1 |
| The 3rd week | 10.4 |
| Around | 12.8 |
| The 5th week | 14.5 |
From the data of table 3 as can be seen, the anti-chloramine solution rank of present embodiment rubber bat lid is near the Excellent level.
Embodiment 3
The rubber bat cover material of present embodiment comprises each components of following parts by weight:
50 parts of rubber substrates;
6 parts of promoting agents;
5 parts of tackifying resins;
5 parts of tenderizers;
20 parts of strengthening agents;
10 parts of fillers;
2.8 parts of promotor;
1.2 parts of vulcanizing agents;
Above-mentioned rubber substrate adopts silica gel; Promoting agent adopts stearic acid; Tackifying resin adopts resol; Tenderizer adopts naphthenic oil; Strengthening agent adopts carbon black and white carbon black and uses; Filler adopts barium sulfate and talcum powder, and particle diameter is 500～5000 orders; Promotor is adopted sulfenamide and thiurams and is used; Vulcanizing agent adopts sulfur-donor and sulphur and uses.
The rubber bat lid of present embodiment is to adopt above-mentioned rubber bat cover material to get by the step preparation identical with embodiment, so repeat no more.
Present embodiment 3 preparation gained elastomeric materials adopt every performance index of embodiment 1 to detect, and the result confirms, the elastomeric material of present embodiment, and it is good to have good anti-chloramine solution performance, good airproof performance, mechanics equally.
Claims (6)
1. rubber bat cover material, each composition weight umber is following:
0.2～1.2 part of 40～50 parts of rubber substrates, 2～10 parts of promoting agents, 0～5 part of tackifying resin, 5～15 parts of tenderizers, 20～35 parts of strengthening agents, 10～30 parts of fillers, 1～5 part of promotor and vulcanizing agent; Wherein,
Described rubber substrate adopts terpolymer EP rubber, silica gel or styrene-butadiene rubber(SBR);
Described promoting agent is zinc oxide or stearic acid or both mixing;
Described tackifying resin is terpine resin, resol, petroleum resin, coumarone indene resin or rosin fat;
Described tenderizer is paraffin oils, rubber softening oil, aromatic hydrocarbon oil, naphthenic oil or Vaseline.
2. according to the described a kind of rubber bat cover material of claim 1, it is characterized in that described strengthening agent is the mixing of any one or both in carbon black or the white carbon black, particle diameter is 500～2000 orders.
3. according to the described a kind of rubber bat cover material of claim 2, it is characterized in that described filler is barium sulfate, talcum powder, lime carbonate or potter's clay, particle diameter is at 500～5000 orders.
4. according to the described a kind of rubber bat cover material of claim 3, it is characterized in that described promotor is any one or two kinds and the two or more mixing in thiazoles, dithiocarbamate(s), amine, guanidine class, sulfenamide or the thiuram type accelerator etc.
5. according to the described a kind of rubber bat cover material of claim 1, it is characterized in that described vulcanizing agent is one or both and the two or more mixing in element sulphur, organo-peroxide, metal oxide, sulfocompound or the resene compound.
6. method that adopts each described rubber bat cover material in the claim 1～5 to prepare the rubber bat lid, this method comprises the steps:
Step 1. Banbury mixer batch mixing
After Banbury mixer is warming up to 50～80 ℃, drop into the rubber base-material, stirring make the rubber base-material softening and evenly after, add promoting agent, stirring adds tackifying resin, strengthening agent, filler and tenderizer after promoting agent is uniformly dispersed again in the rubber base-material, be stirred to be uniformly dispersed, discharging obtains the flexible glue material after cooling off, park 24h;
The step 2. machine batch mixing of beginning to pratise
Adopt mill recycling step 1 preparation gained flexible glue material, add promotor, vulcanizing agent, blending dispersion to whole system is uniformly dispersed, and under 0.5mm roll spacing condition, thin-pass, triangle bag 5 times obtain stand-by elastomeric material;
Step 3. compression molding, cooling and mould unloading
The stand-by elastomeric material of step 2 preparation gained under 150～180 ℃ of conditions of molding, is put into mould, in 5～20min, under 18～22Mpa pressure, finish the rubber cross moulding, thereby prepare required rubber bat lid.
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| CN2010105850979A CN102070844A (en) | 2010-12-13 | 2010-12-13 | Rubber flapper material and preparation method of rubber flapper |
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| CN104610662A (en) * | 2015-01-13 | 2015-05-13 | 厦门市麦华橡胶制品有限公司 | Chloramine-resistant EPDM sealing material and preparation method thereof |
| CN105566925A (en) * | 2016-01-23 | 2016-05-11 | 中山顺富节能科技有限公司 | High-quality electricity-saving device for electric furnace |
| CN105566701A (en) * | 2016-01-23 | 2016-05-11 | 中山顺富节能科技有限公司 | Corrosion-resistant automatic power-off electricity saving device |
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| CN106479065A (en) * | 2015-08-27 | 2017-03-08 | 德州合力佳橡塑制品有限公司 | Door of washing machine special sealing ring |
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| CN104610662A (en) * | 2015-01-13 | 2015-05-13 | 厦门市麦华橡胶制品有限公司 | Chloramine-resistant EPDM sealing material and preparation method thereof |
| CN104610662B (en) * | 2015-01-13 | 2017-01-25 | 厦门市麦华橡胶制品有限公司 | Chloramine-resistant EPDM sealing material and preparation method thereof |
| CN106479065A (en) * | 2015-08-27 | 2017-03-08 | 德州合力佳橡塑制品有限公司 | Door of washing machine special sealing ring |
| CN105566925A (en) * | 2016-01-23 | 2016-05-11 | 中山顺富节能科技有限公司 | High-quality electricity-saving device for electric furnace |
| CN105566701A (en) * | 2016-01-23 | 2016-05-11 | 中山顺富节能科技有限公司 | Corrosion-resistant automatic power-off electricity saving device |
| CN105694350A (en) * | 2016-01-23 | 2016-06-22 | 中山顺富节能科技有限公司 | Heat-dissipation illumination power-saving device |
| CN106543567A (en) * | 2016-10-31 | 2017-03-29 | 黄山全晟密封科技有限公司 | A kind of automobile wiring harness sheath |
| CN106566091A (en) * | 2016-10-31 | 2017-04-19 | 黄山全晟密封科技有限公司 | Via hole rubber sleeve for automobiles |
| CN107641323A (en) * | 2017-11-22 | 2018-01-30 | 桂林全州燎原科技有限责任公司 | A kind of rubber bat lid and preparation method thereof |
| CN108727714A (en) * | 2018-06-08 | 2018-11-02 | 天津市鼎风逸宸科技发展有限公司 | A kind of preparation method of rubber cushion rubber material and the rubber cushion rubber |
| CN111961289A (en) * | 2020-08-27 | 2020-11-20 | 东莞市利群榕兴高分子科技有限公司 | High-hardness EPDM rubber composition and preparation method thereof |
| CN115873353A (en) * | 2023-01-17 | 2023-03-31 | 东莞市思齐橡胶技术有限公司 | EPDM + PTFE composite sealing element material and preparation method thereof |
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Application publication date: 20110525 |