CN100563776C - A kind of food EPT rubber filter-pressing plate and manufacture method thereof - Google Patents
A kind of food EPT rubber filter-pressing plate and manufacture method thereof Download PDFInfo
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- CN100563776C CN100563776C CNB200710031430XA CN200710031430A CN100563776C CN 100563776 C CN100563776 C CN 100563776C CN B200710031430X A CNB200710031430X A CN B200710031430XA CN 200710031430 A CN200710031430 A CN 200710031430A CN 100563776 C CN100563776 C CN 100563776C
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 47
- 239000005060 rubber Substances 0.000 title claims abstract description 45
- 235000013305 food Nutrition 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000003825 pressing Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000004513 sizing Methods 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 239000002390 adhesive tape Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000005977 Ethylene Substances 0.000 claims abstract description 7
- 238000003490 calendering Methods 0.000 claims abstract description 7
- 238000007670 refining Methods 0.000 claims abstract description 7
- 239000000178 monomer Substances 0.000 claims abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 14
- 238000005987 sulfurization reaction Methods 0.000 claims description 13
- 239000006229 carbon black Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 238000005984 hydrogenation reaction Methods 0.000 claims description 6
- 229920003049 isoprene rubber Polymers 0.000 claims description 6
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 5
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 5
- CKIMDJFRLUCYMQ-UHFFFAOYSA-N C(N)(S)=S.C1(=CC=CC=C1)[Zn]C1=CC=CC=C1 Chemical compound C(N)(S)=S.C1(=CC=CC=C1)[Zn]C1=CC=CC=C1 CKIMDJFRLUCYMQ-UHFFFAOYSA-N 0.000 claims description 3
- IOJUPLGTWVMSFF-UHFFFAOYSA-N cyclobenzothiazole Natural products C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 3
- 238000005486 sulfidation Methods 0.000 claims description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 claims description 2
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical group [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 14
- 230000032683 aging Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 21
- 239000000047 product Substances 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000011265 semifinished product Substances 0.000 description 4
- 235000014101 wine Nutrition 0.000 description 4
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 2
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 101100099821 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) cbs-1 gene Proteins 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 235000019990 fruit wine Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 2
- 229960002447 thiram Drugs 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000001815 (2R)-2-phenylpropan-1-ol Substances 0.000 description 1
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 description 1
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 description 1
- 235000009754 Vitis X bourquina Nutrition 0.000 description 1
- 235000012333 Vitis X labruscana Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 230000002075 anti-alcohol Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- REQPQFUJGGOFQL-UHFFFAOYSA-N dimethylcarbamothioyl n,n-dimethylcarbamodithioate Chemical compound CN(C)C(=S)SC(=S)N(C)C REQPQFUJGGOFQL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- KQGFKPKZUOFZSV-UHFFFAOYSA-N furan-2-carbaldehyde;propan-2-one Chemical class CC(C)=O.O=CC1=CC=CO1 KQGFKPKZUOFZSV-UHFFFAOYSA-N 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 235000019991 rice wine Nutrition 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000009923 sugaring Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of food EPT rubber filter-pressing plate and manufacture method thereof.The primary raw material that this press filtration plate adopts is an ethylene propylene diene rubber, is to adopt synthetic high purity white of the method that contains intermingle with or colourless EPDM rubber, and wherein the 3rd enb monomer content is 4～6%; Ethylene contents is 50～55%.Its manufacture method is at first raw material to be mixed by the mass fraction proportioning, adopt conventional EP rubbers calendering process to prepare elastomeric compound, then in the mill with described elastomeric compound heat refining after down sheet obtain film and adhesive tape, then warm patrix in the sizing material is improved temperature and pressure step by step and come punch die, pressurize, and adopt vulcanizing press to vulcanize, obtain food EPT rubber filter-pressing plate.Press filtration plate of the present invention can be applied to the filter press of food service industry, satisfies the food hygienic standard requirement, and the product good springiness is heat-resisting, ageing-resistant, long service life.
Description
Technical field
The present invention relates to the mechanical rubber goods field, particularly a kind of food EPT rubber filter-pressing plate and manufacture method thereof.
Background technology
Be applied to make wine and the food service industry filter press on the press filtration board size usually between 1.2m * 1.2m to 2m * 2m, between 10～20mm, product weight is between 12Kg～30kg usually for product thickness, structure is comparatively complicated.Because ethylene propylene diene rubber (EPDM) has good ageing-resistant, heat-resisting water, anti-alcohol performance, so select for use EPDM to make rubber filter-pressing plate usually.
There is following difficult point in ethylene propylene diene rubber press filtration plate on manufacturing process: (1) product size is bigger, and the semi-finished product sizing material can't adopt conventional extruder to be preformed into an integral body, can only splice by burst; (2) panel size can be vulcanized such large scale product at the vulcanizing press of 1.5m * 1.5m to 2.5m * 2.5m, this vulcanizer clamp force is between 1500 tons～2500 tons, after vulcanizer reaches maximum clamp force, the pressure that is applied on the press filtration plate sizing material has only 5～8MPa, this sulfide stress is obviously on the low side, in general, the closely knit rubber of molded vulcanization, the pressure that is applied on the sizing material need be not less than 24MPa; (3) the self-adhesion performance of EP rubbers is very poor, the mutual adhesion-molded relatively difficulty between the uncured rubber.Because the comprehensive function of above-mentioned three factors, so the ethylene propylene diene rubber of regular convention formula and the conventional very difficult arts demand that satisfies manufacturing press filtration plate of sulfuration process.Quality problems such as fracture, layering, local starved appear in product easily that prepare by existing method, choke with resentment also can have performance issues such as poor flexibility, service life be short, and the food hygiene performance are general or defective, precipitate and to soak residue many.These shortcomings all can not satisfy the instructions for use of wine brewing and food service industry press filtration plate.
Summary of the invention
The objective of the invention is to overcome the shortcoming that exists in the prior art, a kind of good springiness, long service life, food hygiene excellent performance, the safe and reliable food EPT rubber filter-pressing plate of processing technology are provided.
Another object of the present invention is to provide a kind of manufacture method of above-mentioned food EPT rubber filter-pressing plate.
Purpose of the present invention is achieved through the following technical solutions:
A kind of food EPT rubber filter-pressing plate according to the mass fraction meter, comprises following raw material:
Ethylene propylene diene rubber 80～95 mass parts
Hydrogenation of liquid isoprene rubber 5～20 mass parts
Zinc oxide 5～8 mass parts
Stearic acid 1～3 mass parts
Precipitated calcium carbonate 0～30 mass parts
Fast carbon black 40～60 mass parts that extrude
Age resistor 0.5～1.5 mass parts
Sulfur 1.5～2.0 mass parts
N tert butyl benzothiazole 2 sulfenamide 0.5～2.5 mass parts
N cyclohexyl 2 benzothiazole sulfenamide 0～2.5 mass parts
Diphenyl zinc dithiocarbamate 2～3 mass parts
Antiscorching agent 0.4～1.5 mass parts.
Described ethylene propylene diene rubber adopts synthetic high purity white of the method that contains intermingle with or colourless EPDM rubber, and the EPDM rubber that preferred metallocene catalysed agent technology is synthetic also can select for use other to contain intermingle with high-purity and the good EPDM rubber of form and aspect that method is produced.Described EPDM rubber adopt medium degree of unsaturation promptly wherein the 3rd enb monomer (being ENB) content be 4～6% rubber, because the 3rd monomer ENB content has determined curingprocess rate, molded vulcanization is the process of a discontinuous sulfuration, by improving the purpose that curing temperature can reach the reduction cure time.The ethylene contents of described EPDM rubber is 50～55%, because recently from ethylene/propene, increase with ethylene contents, green strength and tear resistance all improve, but ethylene contents increase meeting descends because of the sizing material mixing behavior that causes of crystallization, mobile performance descends, and promptly too high ethylene contents can cause elasticity, compression set performance decrease.From the molecular weight angle, molecular weight is high more, and heat resistance and elasticity are good more, but along with molecular weight improves, Mooney viscosity increases, and rubber mobility can descend, and the EPDM rubber of low mooney viscosity is proper in therefore selecting for use.
Described hydrogenation of liquid isoprene rubber and EPDM compatibility are better, have excellent heat-resisting, weather-resistant performance, can with the EPDM co-crosslinking.It plays plasticizer on the one hand, improves the mixing behavior and the mobile performance of sizing material, compares with the paraffin plasticizer oil, and its molecular weight is big, and is good with the compatibility of EPDM, moves hardly after the sulfuration, helps improving the food hygiene performance of sizing material; Play tackifier on the other hand, significantly the moulding viscosity of EPDM elastomeric compound.
Described fast extrusion carbon black adopts Cabot Co.,Ltd
SO is equivalent to the N550 carbon black that defines among the ASTM D1765.This carbon black is a kind of carbon black of high-cleanness, high, has that low pressure becomes, heat-resisting good a, low water absorbable, the characteristics of easily disperseing, and can improve the food hygiene performance of vulcanizate.
Described age resistor is a phenol antiager, is specially 2,2 '-di-2-ethylhexylphosphine oxide (4-methyl-6-tert butyl phenol), and commodity are called 2246, and this age resistor can improve the heatproof air aging performance of vulcanizate.
Described N tert butyl benzothiazole 2 sulfenamide is that accelerator NS, N cyclohexyl 2 benzothiazole sulfenamide are that accelerator CBS, diphenyl zinc dithiocarbamate are promoter ZBEC, and is all nontoxic, tasteless, and solubility is very high in EPDM.
Described antiscorching agent is selected sulfenamide type antiscorching agent for use, and this antiscorching agent can further improve the coke burning performance of sizing material, satisfies in the sulfidation repeatedly long needs of punch die, pressurize, operating time, guarantees that sizing material has sufficient flowing time.
The manufacture method of described food EPT rubber filter-pressing plate, comprise the steps: at first above-mentioned raw material to be mixed by the mass fraction proportioning, adopt conventional EP rubbers calendering process to prepare elastomeric compound, then in the mill with described elastomeric compound heat refining after down sheet obtain film and adhesive tape, again with warm patrix in the sizing material, improve temperature and pressure step by step and come punch die, pressurize, vulcanize and to obtain food EPT rubber filter-pressing plate after 50～60 minutes.
Adopt conventional EP rubbers calendering process to prepare elastomeric compound and can adopt mill or banbury.Mill can be selected XK-450 or the large-scale mill of XK-550 for use according to product specification size and design feature.Will be behind the elastomeric compound heat refining sheet down, (size is greatly about 400～750mm * 600～850mm * 8～12mm) 4～8 slice, and (cross dimensions 4～6mm * 8～12mm) 4～6, total length is 5～8 meters to go out adhesive tape in addition to go out film usually.
The mold temperature of warm patrix is 90～110 ℃ in the described sizing material.
The temperature of described sulfuration is 155～165 ℃.
Described punch die, pressurize, sulfidation be for to divide film on bed die, every film and die edge longitudinal separation, about distance consistent; Adhesive tape is placed on around the mould, evenly distributes; The patrix that closes is then sent into vulcanizing press, two board joints of mould and vulcanizing press after touch, when vulcanizer pressure rose to 1～2MPa, oil pump stops to go up pressed pressurize preheating 2～4 minutes; The crawl oil pressure pump, slow punch die to pressure rises to 2～5MPa, and pressurize 1～2 minute is laid down pressure exhaust 1～2 time; Crawl oil pressure pump again, slow punch die to pressure rises to 7～9MPa, and pressurize 1～2 minute is laid down pressure exhaust 1～2 time; Crawl oil pressure pump again, slow punch die to pressure rises to 11～13MPa, and pressurize 1～2 minute is laid down pressure exhaust 1～2 time; Crawl oil pressure pump again, slow punch die to pressure rises to 16～20MPa, lays down pressure exhaust 1～2 time; Pressure rises to 16～20Mpa then, begins to vulcanize; After sulfuration finished, with mould water-cooled 1～2 minute, product was taken out in die sinking then.
In the batch manufacture process of many products, the mould initial temperature all is controlled between 90～110 ℃, send into vulcanizing press after, plate temperature is for setting curing temperature (155～165 ℃), in the process of punch die pressurize, mold temperature rises naturally.
The present invention compared with prior art has following advantage and effect:
(1) press filtration plate of the present invention can be applied to the filter press of food service industry, as the filter press of liquor, fruit wine, low wine, yellow rice wine, medicinal liquor, grape wine and industry Separation of Solid and Liquid such as sugaring, fruit juice.
(2) press filtration plate of the present invention satisfies the food hygienic standard requirement, and the product good springiness is heat-resisting, ageing-resistant, long service life.
(3) manufacturing process of the present invention can the manufacturing structure complexity, large-scale dimensions EP rubbers press filtration plate.
The specific embodiment
Below in conjunction with embodiment the present invention is done further detailed description, but embodiments of the present invention are not limited thereto.
Embodiment 1
In mass fraction, raw material consist of:
Hydrogenation of liquid isoprene rubber (the Shanghai Sai Kede LHIR-290 of company) 10 mass parts
Zinc oxide 5 mass parts
Stearic acid 1 mass parts
Antioxidant 2246 1 mass parts
Sulfur 1.5 mass parts
Accelerator NS 1 mass parts
Accelerator CBS 1 mass parts
Promoter ZBEC 2 mass parts
The method of making 1719 * 1914 * 14.8 food EPT rubber filter-pressing plates is as follows:
(1) according to above-mentioned recipe ingredient, in the XK-450 mill, adopt conventional EP rubbers calendering process to prepare elastomeric compound, after the cooling, park;
(2) in the XK-450 mill with the elastomeric compound heat refining after following sheet, (the about 750mm * 850mm of size * 8.5mm) 4 strictly controls the mill roll spacing, and slice thickness is even substantially to go out film; Go out in addition adhesive tape (cross dimensions 6mm * 10mm) 6, total length is 7.2 meters, and control semi-finished product sizing material gross weight is 23.5 kilograms;
(3) the vulcanizer flat board is warming up to 160 ℃ of curing temperatures, mould is being preheated on the vulcanizing press about 100 ℃;
(4) four films are divided on bed die, every film and die edge longitudinal separation, about distance consistent; Article 6, adhesive tape is placed on mould all around, evenly distributes;
(5) patrix that closes is sent into vulcanizing press, mould and two board joints after touch, vulcanizer Pressure gauge indicated pressure is when 2Mpa, oil pump stops to go up presses pressurize preheating 3 minutes;
(6) crawl oil pressure pump, slow punch die to pressure rises to 4MPa, pressurize 1 minute; Lay down pressure exhaust 1 time;
(7) crawl oil pressure pump, slow punch die to pressure rises to 8MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(8) crawl oil pressure pump, slow punch die to pressure rises to 12MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(9) crawl oil pressure pump, slow punch die to pressure rise to 16MPa (the maximum gauge pressure that can reach a little less than vulcanizer), lay down pressure exhaust 2 times; Pressure rises to 16MPa then, begins to calculate cure time 50 minutes;
(10) after sulfuration was finished, mould was put into bosh cooling 2 minutes, and die sinking is then taken out product and can be obtained food EPT rubber filter-pressing plate.
This product is applicable to the rubber filter plate in the filter press on the beer production line.
Embodiment 2
In mass fraction, raw material consist of:
IP4520 (Tao Shi elastomer company, EPDM) 85 mass parts
Hydrogenation of liquid isoprene rubber (the Shanghai Sai Kede LHIR-290 of company) 15 mass parts
Zinc oxide 5 mass parts
Stearic acid 1 mass parts
Precipitated calcium carbonate 30 mass parts
Antioxidant 2246 1 mass parts
Sulfur 1.7 mass parts
Accelerator NS 2.5 mass parts
Promoter ZBEC 2.5 mass parts
The method of making 1425 * 1425 * 21 food EPT rubber filter-pressing plates is as follows:
(1) according to above-mentioned recipe ingredient, in the XK-450 mill, adopt conventional EP rubbers calendering process to prepare elastomeric compound, after the cooling, park;
(2) in the XK-450 mill with the elastomeric compound heat refining after following sheet, (the about 600mm * 600mm of size * 8mm) 8 strictly controls the mill roll spacing, and slice thickness is even substantially to go out film; Go out in addition adhesive tape (cross dimensions 6mm * 10mm) 6, total length is 5.8 meters, and control semi-finished product sizing material gross weight is 21.5 kilograms;
(3) the vulcanizer flat board is warming up to 155 ℃ of curing temperatures, mould is being preheated on the vulcanizing press about 110 ℃;
(4) 8 films are divided on bed die, every film and die edge longitudinal separation, about distance consistent; Article 6, adhesive tape is placed on mould all around, evenly distributes;
(5) patrix that closes is sent into vulcanizing press, mould and two board joints after touch, vulcanizer Pressure gauge indicated pressure is when 1Mpa, oil pump stops to go up presses pressurize preheating 4 minutes;
(6) crawl oil pressure pump, slow punch die to pressure rises to 5MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(7) crawl oil pressure pump, slow punch die to pressure rises to 9MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(8) crawl oil pressure pump, slow punch die to pressure rises to 13MPa, pressurize 1 minute; Lay down pressure exhaust 1 time;
(9) crawl oil pressure pump, slow punch die to pressure rise to 20MPa (the maximum gauge pressure that can reach a little less than vulcanizer), lay down pressure exhaust 2 times; Pressure rises to 20MPa then, begins to calculate cure time 50 minutes;
(10) after sulfuration was finished, mould was put into bosh cooling 2 minutes, and die sinking is then taken out product and can be obtained food EPT rubber filter-pressing plate.
This press filtration plate is fit to be applied on the filter press of fruit wine filtration.
Embodiment 3
In mass fraction, raw material consist of:
Buna EP G 5455 (Lanxess Corporation, EPDM) 80 mass parts
Hydrogenation of liquid isoprene rubber (the Shanghai Sai Kede LHIR-290 of company) 20 mass parts
Zinc oxide 5 mass parts
Stearic acid 1 mass parts
Precipitated calcium carbonate 30 mass parts
SO (Cabot Co.,Ltd, carbon black) 50 mass parts
Antioxidant 2246 1.5 mass parts
Sulfur 1.8 mass parts
Accelerator NS 1 mass parts
Accelerator CBS 1 mass parts
Promoter ZBEC 3 mass parts
The method of making 1380 * 1380 * 21.5 food EPT rubber filter-pressing plates is as follows:
(1) according to above-mentioned recipe ingredient, in the XK-450 mill, adopt conventional EP rubbers calendering process to prepare elastomeric compound, after the cooling, park;
(2) in the XK-450 mill with the elastomeric compound heat refining after following sheet, (the about 620mm * 620mm of size * 12mm) 4 strictly controls the mill roll spacing, and slice thickness is even substantially to go out film; Go out in addition adhesive tape (cross dimensions 6mm * 12mm) 6, total length is 5.6 meters, and control semi-finished product sizing material gross weight is 24 kilograms;
(3) the vulcanizer flat board is warming up to 160 ℃ of curing temperatures, mould is being preheated on the vulcanizing press about 90 ℃;
(4) 4 films are divided on bed die, every film and die edge longitudinal separation, about distance consistent; Article 6, adhesive tape is placed on mould all around, evenly distributes;
(5) patrix that closes is sent into vulcanizing press, mould and two board joints after touch, vulcanizer Pressure gauge indicated pressure is when 1Mpa, oil pump stops to go up presses pressurize preheating 3 minutes;
(6) crawl oil pressure pump, slow punch die to pressure rises to 3MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(7) crawl oil pressure pump, slow punch die to pressure rises to 7MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(8) crawl oil pressure pump, slow punch die to pressure rises to 11MPa, pressurize 2 minutes; Lay down pressure exhaust 1 time;
(9) crawl oil pressure pump, slow punch die to pressure rises to 16MPa, lays down pressure exhaust 2 times; Pressure rises to 16MPa then, begins to calculate cure time 60 minutes;
(10) after sulfuration was finished, mould was put into bosh cooling 2 minutes, and die sinking is then taken out product and can be obtained food EPT rubber filter-pressing plate.
This press filtration plate is fit to be applied on the sugar manufacturing industry filter press.
Comparative Examples 1
Raw material consist of:
EP33 (Japanese JSR company, EP rubbers) 100 mass parts
Zinc oxide 5 mass parts
Di-iron trioxide 3 mass parts
N330 carbon black 35 mass parts
Precipitated calcium carbonate 60 mass parts
20# machine oil 7 mass parts
Cumyl peroxide 3 mass parts
Sulfur 1 mass parts
Stearic acid 1 mass parts
Accelerator CBS (N cyclohexyl 2 benzothiazole sulfenamide) 0.3 mass parts
TM monex TD (tetramethylthiuram disulfide) 0.3 mass parts
Accelerant N OBS (N-oxygen diethylene-2-phenylpropyl alcohol thiazolesulfenamide) 1 mass parts
Manufacture method is identical with step (1) (2) (3) (4) among the embodiment 1, boosts to 16Mpa then, after the exhaust 4 times, vulcanizes that to get product after 50 minutes be comparative sample 1.
Comparative Examples 2
Raw material consist of:
J-4045 (Ji Hua company, EP rubbers) 100 mass parts
Zinc oxide 7 mass parts
Antioxidant MB (2-mercaptobenzimidazole) 0.5 mass parts
Antioxidant 4010NA (N-isopropyl-N '-diphenyl-para-phenylene diamine) 1 mass parts
Spray carbon black 85 mass parts
Crosslinking coagent two furfural acetones 0.3 mass parts
Crosslinking coagent TAIC (triallyl isocyanurate) 1 mass parts
Stearic acid 0.5 mass parts
Metallic soap based mixtures (the mould 935P that gets profit, the high note company in Qingdao product) 1 mass parts
Cumyl peroxide 3.5 mass parts
Manufacture method is identical with embodiment 2, obtains comparative sample 2.
Test case:
According to GB4806.1-1994 " foodstuff rubber products sanitary standard " sample of embodiment 1,2,3 and Comparative Examples 1,2 is carried out the food hygiene service check, and the processing characteristics of these samples is compared, the result as shown in Table 1 and Table 2:
Table 1: food hygiene performance
As shown in Table 1, the press filtration plate assay that embodiment 1,2,3 prepares is better than request of national standard, and sizing material possesses very high pure degree.
Table 2: processing characteristics
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative Examples 1 | Comparative Examples 2 |
| The local current mark of sulfuration back product, starved situation | Do not have | Do not have | Do not have | More | Less |
| Product thickness aspect, sulfuration back bed hedgehopping situation | Less than 0.2mm | Less than 0.2mm | Less than 0.2mm | Greater than 1mm | Greater than 0.5mm |
| The product fracture of sulfuration back, layering situation | Do not have | Do not have | Do not have | Have | Less |
As can be seen from Table 2, embodiment 1～3 sizing material has good flowing property and bond properties; The middle temperature patrix that the present invention formulates, the technology of the multistage punch die that boosts is reasonable, has avoided quality problems such as product bed hedgehopping, current mark, starved, branch fault rupture effectively.
Claims (8)
1, a kind of food EPT rubber filter-pressing plate is characterized in that: according to the mass fraction meter, comprise following raw material:
Ethylene propylene diene rubber 80～95 mass parts
Hydrogenation of liquid isoprene rubber 5～20 mass parts
Zinc oxide 5～8 mass parts
Stearic acid 1～3 mass parts
Precipitated calcium carbonate 0～30 mass parts
Fast carbon black 40～60 mass parts that extrude
Age resistor 0.5～1.5 mass parts
Sulfur 1.5～2.0 mass parts
N tert butyl benzothiazole 2 sulfenamide 0.5～2.5 mass parts
N cyclohexyl 2 benzothiazole sulfenamide 0～2.5 mass parts
Diphenyl zinc dithiocarbamate 2～3 mass parts
Antiscorching agent 0.4～1.5 mass parts.
2, food EPT rubber filter-pressing plate according to claim 1 is characterized in that: described ethylene propylene diene rubber adopts synthetic high purity white of the method that contains intermingle with or colourless EPDM rubber, and wherein the 3rd monomer ENB content is 4～6%; Ethylene contents is 50～55%.
3, food EPT rubber filter-pressing plate according to claim 1 is characterized in that: described age resistor is 2,2 '-di-2-ethylhexylphosphine oxide (4-methyl-6-tert butyl phenol).
4, food EPT rubber filter-pressing plate according to claim 1 is characterized in that: described antiscorching agent is a sulfenamide type antiscorching agent.
5, a kind of manufacture method of each described food EPT rubber filter-pressing plate of claim 1～4, it is characterized in that comprising the steps: at first the described raw material of claim 1 being mixed by the mass fraction proportioning, adopt the EP rubbers calendering process to prepare elastomeric compound, then in the mill with described elastomeric compound heat refining after down sheet obtain film and adhesive tape, again with warm patrix in the sizing material, improve temperature and pressure step by step and come punch die, pressurize, vulcanize and to obtain food EPT rubber filter-pressing plate after 50～60 minutes.
6, the manufacture method of food EPT rubber filter-pressing plate according to claim 5 is characterized in that: the mold temperature of warm patrix is 90～110 ℃ in the described sizing material.
7, the manufacture method of food EPT rubber filter-pressing plate according to claim 5 is characterized in that: the temperature of described sulfuration is 155～165 ℃.
8, the manufacture method of food EPT rubber filter-pressing plate according to claim 5 is characterized in that: described punch die, pressurize, sulfidation be for to divide film on bed die, every film and die edge longitudinal separation, about distance consistent; Adhesive tape is placed on around the mould, evenly distributes; The patrix that closes is then sent into vulcanizing press, two board joints of mould and vulcanizing press after touch, vulcanizer pressure rises to when 1～2MPa, oil pump stops to go up presses pressurize preheating 2～4 minutes; The crawl oil pressure pump, slow punch die to pressure rises to 2～5MPa, and pressurize 1～2 minute is laid down pressure exhaust 1～2 time; Crawl oil pressure pump again, slow punch die to pressure rises to 7～9MPa, and pressurize 1～2 minute is laid down pressure exhaust 1～2 time; Crawl oil pressure pump again, slow punch die to pressure rises to 11～13MPa, and pressurize 1～2 minute is laid down pressure exhaust 1～2 time; Crawl oil pressure pump again, slow punch die to pressure rises to 16～20MPa, lays down pressure exhaust 1～2 time; Pressure rises to 16～20Mpa then, begins to vulcanize; After sulfuration finished, with mould water-cooled 1～-2 minute, die sinking then obtained food EPT rubber filter-pressing plate.
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| JP2011127627A (en) * | 2009-12-15 | 2011-06-30 | Toyo Tire & Rubber Co Ltd | Shaft spring for railroad vehicle and method for manufacturing the same |
| CN101973919A (en) * | 2010-09-28 | 2011-02-16 | 江苏飞亚化学工业有限责任公司 | Method for preparing zinc diphenyl dithiocarbamate |
| CN102701643A (en) * | 2012-04-19 | 2012-10-03 | 佛山市金凯地过滤设备有限公司 | Ceramic filter pressing plate, manufacturing method thereof and filter press using same |
| CN103483698B (en) * | 2013-10-08 | 2016-01-20 | 江苏省电力公司常州供电公司 | 35kV hot line work terpolymer EP rubber insulating gloves |
| CN103724822A (en) * | 2013-12-06 | 2014-04-16 | 成都闿阳科技有限公司 | Automobile sealing strip |
| CN103739965A (en) * | 2013-12-06 | 2014-04-23 | 成都闿阳科技有限公司 | Vehicle rubber sealing strip |
| CN103739966A (en) * | 2013-12-06 | 2014-04-23 | 成都闿阳科技有限公司 | Low-toxicity and harm-free vehicle door-window sealing tape |
| CN109109248A (en) * | 2017-06-26 | 2019-01-01 | 洛阳尖端技术研究院 | A kind of molding vulcanization process and patch |
| EP3617301A1 (en) * | 2018-08-29 | 2020-03-04 | Heineken Supply Chain B.V. | Mash filter membrane |
| CN110878161B (en) * | 2018-09-06 | 2022-08-12 | 中国石油化工股份有限公司 | High-temperature-resistant energy-saving adhesive layer rubber for conveyer belt |
| CN110938261A (en) * | 2019-11-26 | 2020-03-31 | 华南协同创新研究院 | High-temperature-resistance low-emigration EPDM material and preparation method and application thereof |
| CN113775316B (en) * | 2021-11-11 | 2022-03-29 | 中石化西南石油工程有限公司 | Manufacturing method of compression type rubber barrel assembly for packer |
| CN114907648A (en) * | 2021-12-22 | 2022-08-16 | 株洲众为科技有限责任公司 | Preparation method and product of food-grade compression-resistant EPDM material for water treatment |
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Address after: 510700 Whampoa, Guangdong Province, Mao Road, District No. 828, No. Patentee after: GUANGZHOU MECHANICAL ENGINEERING RESEARCH INSTITUTE Co.,Ltd. Address before: 510700 Whampoa, Guangdong Province, Mao Road, District No. 828, No. Patentee before: Guangzhou Mechanical Engineering Research Institute |
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