CN102850676B - Chlorinated polyethylene rubber composite material for food conveying belt - Google Patents
Chlorinated polyethylene rubber composite material for food conveying belt Download PDFInfo
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- CN102850676B CN102850676B CN201210359591.2A CN201210359591A CN102850676B CN 102850676 B CN102850676 B CN 102850676B CN 201210359591 A CN201210359591 A CN 201210359591A CN 102850676 B CN102850676 B CN 102850676B
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Abstract
The invention discloses chlorinated polyethylene rubber composite material for a food conveying belt, which comprises the following raw materials in part by weight: 80 to 120 parts of chlorinated polyethylene rubber, 5 to 15 parts of magnesium oxide, 15 to 30 parts of white carbon black, 0.5 to 3 parts of silane coupling agent, 10 to 50 parts of super-fine calcium carbonate, 1 to 5 parts of titanium dioxide, 10 to 20 parts of plasticizer, 5 to 15 parts of white oil, 2 to 10 parts of organic peroxide vulcanizing agent, 1.5 to 3.0 parts of vulcanizing agent and 1 to 10 parts of rubber and plastic deodorant. The mechanical property of the food conveying belt can completely meet the requirements of GB/T 23677-2009, the food conveying belt also has the characteristics of non-toxicity, tastelessness and innocuity, and all hygienic indexes meet the requirements of GB 9685-2008. The material is low in production cost and easy to popularize, and broadens the application range of chlorinated polyethylene rubber.
Description
Technical field
The present invention relates to field of rubber materials, relate in particular to a kind of chlorinated polyethylene rubber matrix material for foodweb.
Background technology
Foodweb is to process by nontoxic, harmless material, nontoxic, free from extraneous odour, and smooth surface, is applicable to the materials such as transporting food products class, food raw material and tobacco.
The manufacture material of foodweb has natural/styrene-butadiene rubber(SBR), polyvinyl chloride (PVC), NBR/PVC alloy, urethanes, polyethylene, polypropylene, PP, nylon, PA etc., according to concrete food requirement, has corresponding dedicated conveyer belt.Duck conveyor belt tensile strength is high, circumnutating property good except having for foodweb, the frivolous feature such as tough, also should have oil resistant, non-toxic sanitary, the feature such as easy to clean.
The main material of present nontoxic foodweb is urethane (PU type).Because PVC, polyethylene etc. contain harmful composition, so substantially use PU type conveying belt for food service industry now.PU conveying belt is support framework by the polyester compound fabric through special processing, applies PU resin and makes loading surface.PU conveying belt tool has good wearability and anti-physically aged, is a kind of long-lived conveying belt product.But polyurethane material is expensive, and processing difficulties, limited development and the application of PU foodweb.
Chlorinated polyethylene rubber is a kind of nontoxic, tasteless new type rubber material, has good mechanical property simultaneously, and cheap, only has 1/4th of PU, is the ideal chose of manufacturing foodweb.Chlorinated polyethylene rubber application in the field at present still belongs to blank.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency existing for prior art, provides a kind of cheap, chlorinated polyethylene rubber matrix material for foodweb that intensity is high, nonpoisonous and tasteless.
For solving the problems of the technologies described above, technical scheme of the present invention is:
For a chlorinated polyethylene rubber matrix material for foodweb, by the raw material that comprises following weight part, be prepared from: 80～120 parts of chlorinated polyethylene rubbers, 5～15 parts, magnesium oxide, 15～30 parts of white carbon blacks, 0.5～3 part of silane coupling agent, 10～50 parts of calcium carbonate superfine powders, 1～5 part of titanium dioxide, 10～20 parts, softening agent, 5～15 parts of white oils, 2～10 parts of organic peroxide sulfuration agent, 1.5～3.0 parts of vulcanization aids, 1～10 part of rubber and plastic deodovization agent.
As one, improving, is to use deionized water to wash in described chlorinated polyethylene rubber production process, and obtain through high temperature drying processing.
Preferably, described vulcanization aid is iso-cyanuric acid triallyl ester.
Preferably, described softening agent is citrate plasticizer.
As further preferred, described citrate plasticizer is tributyl citrate plasticizer.
Preferably, described organic peroxide sulfuration agent is tert butyl peroxy benzoate.
Preferably, described magnesium oxide is light magnesium oxide.
By the tensile strength >=10.3MPa of above-mentioned various raw materials rubber composite after 15～20 minutes through 145～155 ℃ of sulfurations, tensile yield >=504%, shore hardness >=75, adhesion strength >=3.5N/mm with tissue layer, after hot air aging in 70 ℃/168 hours, tensile strength velocity of variation+3.2%, tensile yield velocity of variation-6.1%.
The rubber and plastic deodovization agent that the rubber and plastic deodovization agent that the present invention uses is good for Ninghai city and Chemical Co., Ltd. produces.Good and rubber and plastic deodovization agent is adopted through multiple tracks processes and is formed by the inorganic silicic acid salt material with single hole structure, it is the irritating smell of the various corresponding chemical of decrease uptake very effectively, as various peculiar smell, stink, and can absorb various harmful volatilization residues, as benzene, ammonia, formaldehyde, chlorine etc.And there is the features such as the consistency splendid with elastomeric material, actual effect is long, addition is few, and elastomeric material performance is had no effect, environmental protection, be nontoxic environmentfriendly products, meet in the ROHS of European Union instruction about national environmental protection product quality supervision and inspection Spot detection index of correlation up to standard.
Owing to having adopted technique scheme, the invention has the beneficial effects as follows:
The present invention adopts the main raw material of chlorinated polyethylene rubber as foodweb, adopt rational composition of raw materials, and add rubber and plastic deodovization agent to remove the irritating smell producing while vulcanizing, thereby make the foodweb of producing not only there is the features such as duck conveyor belt tensile strength is high, circumnutating property good, thermal ageing resistant performance is good, mechanical property meets the requirement of GB/T 23677-2009 completely, also have nontoxic, tasteless, harmless feature, every sanitary index meets the requirement of GB 9685-2008.The invention provides the food products transport carrying material that a kind of production cost is low, be easy to popularization, widened the Application Areas of chlorinated polyethylene rubber.
Chlorinated polyethylene rubber itself is nontoxic, harmless, but owing to can adding in process of production various additive synthesis, and the chemical substance such as contact acid, alkali, these chemical substances have certain toxic side effect, and the general service water that adopts is washed when washing, washing weak effect, can not remove the chemical substances such as disacidify, alkali well, the chlorinated polyethylene rubber that the present invention adopts is washed after art breading and high temperature drying by deionization, can guarantee that every sanitary index of CM meets the requirement of GB 9685-2008.The present invention selects suitable additive synthesis material to coordinate with CM, the sanitary index of these compounding ingredients not only will meet the requirement of GB9685-2008, and the mechanical property of the chlorinated polyethylene rubber matrix material of producing after coordinating must meet the requirement of GB/T23677-2009.Owing to can producing irritating smell after matrix material sulfuration, and during organic peroxide sulfuration, there is decomposition reaction, can generate the residue of the irritant smells such as some micromolecular ethers, ketone, aldehyde, therefore conveying belt in use can slowly evaporate, affect the smell of food, the present invention has added a kind of efficient rubber and plastic deodovization agent for this reason, can highly effectively suppress, absorb these harmful volatilization residues, and this deodovization agent has splendid high thermal resistance, and timeliness is long, guarantee long-acting nontoxic, tasteless, harmless in foodweb use procedure.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
A kind of chlorinated polyethylene rubber matrix material for foodweb, by the raw material that comprises following weight part, be prepared from: 100 parts of chlorinated polyethylene rubbers, 10 parts, magnesium oxide, 20 parts of white carbon blacks, 2 parts of silane coupling agents, 30 parts of calcium carbonate superfine powders, 2 parts of titanium dioxides, 16 parts, softening agent, 8 parts of white oils, 5 parts of organic peroxide sulfuration agent, 1.5 parts of vulcanization aid iso-cyanuric acid triallyl esters, 3 parts of rubber and plastic deodovization agents, used deionized water to wash and obtain in described chlorinated polyethylene rubber production process.
Embodiment 2
A kind of chlorinated polyethylene rubber matrix material for foodweb, by the raw material that comprises following weight part, be prepared from: 90 parts of chlorinated polyethylene rubbers, 7 parts, magnesium oxide, 20 parts of white carbon blacks, 2 parts of silane coupling agents, 15 parts of calcium carbonate superfine powders, 2 parts of titanium dioxides, 10 parts of citrate plasticizers, 6 parts of white oils, 3 parts of tert butyl peroxy benzoates, 1.8 parts of vulcanization aid iso-cyanuric acid triallyl esters, 2 parts of rubber and plastic deodovization agents, in described chlorinated polyethylene rubber production process, be to use deionized water to wash, and obtain through high temperature drying processing.
Embodiment 3
A kind of chlorinated polyethylene rubber matrix material for foodweb, by the raw material that comprises following weight part, be prepared from: 100 parts of chlorinated polyethylene rubbers, 12 parts of light magnesium oxides, 22 parts of white carbon blacks, 1 part of silane coupling agent, 35 parts of calcium carbonate superfine powders, 3 parts of titanium dioxides, 15 parts of citrate plasticizers, 10 parts of white oils, 5 parts of tert butyl peroxy benzoates, 2.0 parts of vulcanization aid iso-cyanuric acid triallyl esters, 5 parts of rubber and plastic deodovization agents, in described chlorinated polyethylene rubber production process, be to use deionized water to wash, and obtain through high temperature drying processing.
Embodiment 4
A kind of chlorinated polyethylene rubber matrix material for foodweb, by the raw material that comprises following weight part, be prepared from: 120 parts of chlorinated polyethylene rubbers, 15 parts of light magnesium oxides, 15 parts of white carbon blacks, 2.5 parts of silane coupling agents, 45 parts of calcium carbonate superfine powders, 4 parts of titanium dioxides, 20 parts of tributyl citrate plasticizers, 14 parts of white oils, 10 parts of tert butyl peroxy benzoates, 3.0 parts of vulcanization aid iso-cyanuric acid triallyl esters, 8 parts of rubber and plastic deodovization agents, in described chlorinated polyethylene rubber production process, be to use deionized water to wash, and obtain through high temperature drying processing.
By the performance index of the rubber composite after 15～20 minutes through 145～155 ℃ of sulfurations of the various raw materials in embodiment 1-embodiment 4, in Table 1, health detects index situation in Table 2.
Table 1
Table 2
| Project | Index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Residue on evaporation, mg/L | |||||
| 4% acetic acid soak solution | ≤2000 | 125 | 130 | 145 | 141 |
| 65% alcohol immersion liquid | ≤40 | 6.1 | 4.5 | 7.0 | 6.2 |
| Water soaking liquid | ≤30 | 2.1 | 3.5 | 3.5 | 3.8 |
| Normal hexane soak solution | ≤2000 | 4.3 | 6.1 | 6.9 | 6.5 |
| Potassium permanganate consumption, mg/L | |||||
| Water soaking liquid | ≤40 | 3.5 | 2.0 | 5.1 | 6.5 |
| Zinc (Zn), mg/L | |||||
| 4% acetic acid soak solution | ≤20 | Do not detect | Do not detect | Do not detect | Do not detect |
| Heavy metal (in Pb), mg/L | |||||
| 4% acetic acid soak solution | ≤1.0 | Do not detect | Do not detect | Do not detect | Do not detect |
| Residual propylene is fine, mg/kg | ≤11 | Do not detect | Do not detect | Do not detect | Do not detect |
Claims (5)
1. for a chlorinated polyethylene rubber matrix material for foodweb, it is characterized in that being prepared from by the raw material that comprises following weight part: 80～120 parts of chlorinated polyethylene rubbers, 5～15 parts, magnesium oxide, 15～30 parts of white carbon blacks, 0.5～3 part of silane coupling agent, 10～50 parts of calcium carbonate superfine powders, 1～5 part of titanium dioxide, 10～20 parts, softening agent, 5～15 parts of white oils, 2～10 parts of organic peroxide sulfuration agent, 1.5～3.0 parts of vulcanization aids, 1～10 part of rubber and plastic deodovization agent; Described softening agent is citrate plasticizer; Described organic peroxide sulfuration agent is tert butyl peroxy benzoate; In described chlorinated polyethylene rubber production process, using deionized water to wash obtains.
2. the chlorinated polyethylene rubber matrix material for foodweb as claimed in claim 1, is characterized in that: described vulcanization aid is iso-cyanuric acid triallyl ester.
3. the chlorinated polyethylene rubber matrix material for foodweb as claimed in claim 1, is characterized in that: described citrate plasticizer is tributyl citrate plasticizer.
4. the chlorinated polyethylene rubber matrix material for foodweb as claimed in claim 1, is characterized in that: described magnesium oxide is light magnesium oxide.
5. the chlorinated polyethylene rubber matrix material for foodweb as described in claim as arbitrary in claim 1 to 4, it is characterized in that: by the tensile strength >=10.3MPa of described various raw materials rubber composite after 15～20 minutes through 145～155 ℃ of sulfurations, tensile yield >=504%, shore hardness >=75, adhesion strength >=3.5N/mm with tissue layer, after hot air aging in 70 ℃/168 hours, tensile strength velocity of variation+3.2%, tensile yield velocity of variation-6.1%.
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| CN106084510B (en) * | 2016-05-31 | 2018-05-25 | 衡水泰威新材料科技股份有限公司 | A kind of haloflex colour oil resistant fire retarding conveying band and manufacturing method |
| CN106633441A (en) * | 2016-11-04 | 2017-05-10 | 南京利德东方橡塑科技有限公司 | High-temperature-resistant CPE rubber composition, preparation method, application and application product thereof |
| CN106883520A (en) * | 2016-11-11 | 2017-06-23 | 建新赵氏集团有限公司 | Sealing strip material of environmentally friendly, low smell and preparation method thereof |
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| DE69401120T2 (en) * | 1993-11-30 | 1997-04-03 | Atochem Elf Sa | Conveyor belt, especially for food |
| CN101096244B (en) * | 2007-07-29 | 2010-10-27 | 安徽中意胶带有限责任公司 | Thermoplastic elastomer surface unitary-core flame-resistant conveying belt and manufacturing method thereof |
| CN101559874B (en) * | 2009-05-12 | 2011-05-04 | 山东安能输送带橡胶有限公司 | Oilproof flame retardant conveyor belt |
| CN102604242B (en) * | 2012-02-14 | 2013-07-03 | 无锡宝通带业股份有限公司 | Covering rubber for flame-retardant heat-resistant fabric core conveyer belt and preparation method thereof |
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