CN106928501A - A kind of food grade white covering rubber composition and its production technology used for conveyer belt - Google Patents
A kind of food grade white covering rubber composition and its production technology used for conveyer belt Download PDFInfo
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- CN106928501A CN106928501A CN201710169614.6A CN201710169614A CN106928501A CN 106928501 A CN106928501 A CN 106928501A CN 201710169614 A CN201710169614 A CN 201710169614A CN 106928501 A CN106928501 A CN 106928501A
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- conveyer belt
- rubber composition
- food grade
- covering rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Belt Conveyors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to rubber cover production technical field, a kind of food grade white covering rubber composition and its production technology used for conveyer belt is specifically related to；The design for rubber formulation rationally, the regulation of national sector standard is met through items test；The technical scheme compensate for the deficiency about conveyer belt field of employment in existing national standard and professional standard well, meet demand of the food service industry to conveyer belt, be enterprise in reduces cost, meet customer requirement in terms of achieve larger effect；The present invention expands the use scope of conveyer belt, it is adaptable to larger freight volume and the use environment contacted with food.
Description
Technical field
The invention belongs to rubber cover production technical field, a kind of food grade white covering rubber used for conveyer belt is specifically related to
Composition and its production technology.
Background technology
It is defeated to food-grade in (GB/T7984) and chemical industry standard (HG/T3782, HG/T3714) in current national standard
Band is sent not claim, in HG/T2818《Light-type conveyer belt》In be related to foodstuff conveyor belt, but food-grade is conveyed
The specific hygienic requirements of band is not referred to, and is existed in practical application and used the situation (such as salt factory) of food-grade conveyer belt.
Existing standard GB/T7984《General applications fabric core conveyor belt》Foodweb is not particularly suited for, the conveying of other particular/special requirements
Band such as GB/T10822《General service fabric core fire retarding conveying band》、GB/T20021《Canvas core heat resistance conveyor belt》、HG/T3782
《Acid and alkali-resistance conveyer belt》、HG/T3647《Cold-resistant conveyer belt》、HG/T3714《Oil resistant conveyer》、HG/T4225《Fabric core tubulose
Conveyer belt》Etc. not making requirement to the sizing material for contacting food in standard, foodweb is not suitable for yet yet, and chemical industry
Standard HG/T2818《Light-type conveyer belt》" this standard is applied to the light of the industries such as weaving, light industry, food, electronics to regulation in scope
Just conveyer light-type conveyer belt ", but the specific requirement of the coating of contact food is not embodied in standard provision yet, embody
The required standard is GB4806.1《Foodstuff rubber products sanitary standard》.
In the market be used for food-grade light-type conveyer belt coating be mostly with polyvinyl chloride (PVC) as coating,
And it is also in the world too controversial that polyvinyl chloride (PVC) is used to contact food, while light-type conveyer belt there is also overall drawing
The shortcoming that power is low, freight volume is little, is not suitable for the larger place of freight volume and uses.
The content of the invention
It is unsatisfactory for the defect of industry requirement and a kind of food is provided it is an object of the invention to is directed to above-mentioned existing conveyer belt
Level white covering rubber composition and its production technology used for conveyer belt.
The technical scheme is that：A kind of food grade white covering rubber composition used for conveyer belt, is entered by following raw material
It is prepared by row：
100 parts of white Zou's piece natural rubber or 1# smoke sheet rubbers, 3~5 parts of zinc oxide, 1~3 part of stearic acid, age resistor is 1.5~
3 parts, reinforcing agent be 20~30 parts of white carbon, filler be barium sulfate 40~60,0.3~0.5 part of sulphur, accelerator be 2.0~
3.0 parts.
Preferably, white carbon used in this rubber composition is that fume colloidal silica Degussa A200 or the precipitation method are white
At least one of carbon black HD165M.
The accelerator is used in combination for TETD, DTDM, TMTD, and the consumption of the accelerator is that TETD is 0.5~0.8 part,
DTDM is 1~1.4 part, and TMTD is 0.5~0.8 part.
The age resistor is physical antioxidant paraffin and chemical antiager MB, and the wherein consumption of paraffin is 0.5~1 part, is changed
The consumption for learning antioxidant MB is 1~2 part.Physical antioxidant paraffin forms paraffin protecting film in the rubber of sulfidization molding,
There is the positive protective action of comparing to the anti-old effect of rubber, meanwhile, the consumption of paraffin age resistor again can not be excessive, in case
Rubber bloom.
A kind of food grade white covering rubber composition used for conveyer belt is preferably formulated and is, white Zou's piece natural rubber or 1# cigarettes
100 parts of piece glue, 4 parts of zinc oxide, 1.5 parts of stearic acid, 0.8 part of age resistor paraffin, 2 parts of antioxidant MB, 25 parts of white carbon, sulfuric acid
58 parts of barium, 0.5 part of sulphur, acceterator TE TD0.6 parts, TMTD0.6 parts, DTDM is 1.3 parts.
A kind of production technology of food grade white covering rubber composition used for conveyer belt, comprises the following steps：
The cleaning of A banburies and rolling equipment：Natural rubber is plasticated with banbury and mill, process of plasticating
In the impurity taken out of in equipment, until when being plasticated again in equipment, the impurity being visible by naked eyes in sizing material.Set for surface cleaning
Standby rubber is used for other rubber productions without environmental requirement after plasticating.
B banburyings：It is 90 DEG C that banbury is set temperature, and rotating speed is 60r/min, and input rubber pressurization is plasticated, and plasticate 1min
Zinc oxide, stearic acid, age resistor etc. are added afterwards, then in banburying 0.5min；Elastomeric compound is put into mill bottom sheet, glue after dumping
Material parks condition to park at room temperature 4 hours.The setting of temperature can make rubber plasticate faster in rubber internal mixing pass, while
The rotating speed of setting makes banburying room temperature not rise too high.
Bis- sections of banburyings of C：The sizing material for parking adds the materials such as reinforcement and filler in banbury, and the temperature of banbury sets
90 DEG C are set to, rotating speed is 60r/min, mixing time is 2min；Two-stage mixing glue is put into mill bottom sheet after dumping, sizing material stops
Condition is put to park at room temperature 4 hours.
D adds vulcanizing agent：The two-stage mixing glue for parking adds the small powders such as vulcanizing agent and accelerator in mill, sets
The roll spacing of mill is 2mm, and accelerator is added after plasticating, and the roll spacing of mill is adjusted to 1mm after turning over glue 3 times, it is thin it is logical 6 times after plus
Enter vulcanizing agent, left and right rubber tapping simultaneously thin logical, adjustment roll spacing to bottom sheet after 2mm；The thin logical number of times of sizing material, left and right rubber tapping and turn over glue number of times
Small powder mixes evenly during setting can make rubber.
Beneficial effects of the present invention are：The design for rubber formulation rationally, national sector standard is met through items test
Regulation；The technical scheme compensate for the deficiency about conveyer belt field of employment in existing national standard and professional standard well,
Meet demand of the food service industry to conveyer belt, be enterprise in reduces cost, meet customer requirement in terms of achieve larger effect；
The present invention expands the use scope of conveyer belt, it is adaptable to larger freight volume and the use environment contacted with food.
Specific embodiment
Embodiment one
A kind of food grade white covering rubber composition used for conveyer belt, is prepared by following raw material：
100 parts of white Zou's piece natural rubber or 1# smoke sheet rubbers, 4 parts of zinc oxide, 1.5 parts of stearic acid
0.8 part of age resistor paraffin, 2 parts of antioxidant MB,
20 parts of fume colloidal silica Degussa A200,55 parts of barium sulfate,
0.5 part of sulphur,
Acceterator TE TD0.6 parts, TMTD0.6 parts, DTDM is 1.3 parts
Embodiment two
A kind of food grade white covering rubber composition used for conveyer belt, is prepared by following raw material：
100 parts of white Zou's piece natural rubber or 1# smoke sheet rubbers, 4 parts of zinc oxide, 1.5 parts of stearic acid
0.8 part of age resistor paraffin, 2 parts of antioxidant MB,
25 parts of precipitated silica HD165M, 58 parts of barium sulfate,
0.5 part of sulphur,
Acceterator TE TD0.6 parts, TMTD0.6 parts, DTDM is 1.3 parts
Embodiment three
A kind of food grade white covering rubber composition processing technology used for conveyer belt, according to embodiment one, embodiment two
Formula is kneaded, and its step is as follows：
The cleaning of A banburies and rolling equipment：Standby natural rubber is taken, natural rubber is entered with banbury and mill
Row is plasticated, the impurity taken out of in equipment during plasticating, until when being plasticated again in equipment, what is be visible by naked eyes in sizing material is miscellaneous
Matter.Rubber for surface cleaning equipment is used for other rubber productions without environmental requirement after plasticating.
B banburyings：It is 90 DEG C that banbury is set temperature, and rotating speed is 60r/min, puts into white Zou's piece natural rubber or 1# cigarettes
The pressurization of piece glue is plasticated, and zinc oxide, stearic acid, age resistor paraffin, MB etc. is added after the 1min that plasticates, then in banburying 0.5min；Row
Elastomeric compound is put into mill bottom sheet after glue, bin aging condition is to park at room temperature 4 hours.Temperature in rubber internal mixing pass
90 DEG C are set to, rubber can be made faster to plasticate, while it is 60r/min to set rotor speed, banburying room temperature is not increased
Too high, in internal mixing pass, the temperature of banbury is 90~140 DEG C.Not more than 125 DEG C, similarly hereinafter
Bis- sections of banburyings of C：The sizing material for parking adds the material such as reinforcing agent white carbon and filler barium sulfate in banbury,
The temperature setting of banbury is 90 DEG C, and rotating speed is 60r/min, and mixing time is 2min；Two-stage mixing glue is put into out after dumping
Mill bottom sheet, to park at room temperature 4 hours, the temperature of banbury is 90~170 DEG C to bin aging condition.
D adds vulcanizing agent：The two-stage mixing glue for parking adds the small powders such as vulcanizing agent and accelerator in mill, sets
The roll spacing of mill is 2mm, and accelerator is added after plasticating, and the roll spacing of mill is adjusted to 1mm after turning over glue 3 times, it is thin it is logical 6 times after plus
Enter vulcanizing agent, left and right rubber tapping simultaneously thin logical, adjustment roll spacing to bottom sheet after 2mm；The thin logical number of times of sizing material, left and right rubber tapping and turn over glue number of times
Small powder mixes evenly during setting can make rubber；It is thin it is logical during carry out temperature test with infrared ray roller temperature tester, control
Temperature processed is less than 105 DEG C, and the logical cooling water of equipment is cooled down during higher than 105 DEG C.
Table 1 is according to embodiment one, implements two food grade whites for obtaining covering rubber composition used for conveyer belt according to row
Mark the result after GB/T7894 is tested.
| Shore A hardness | Abrasion (DIN abrasion) mm3 | Tensile strength (MPa) | Elongation at break (%) | |
| Embodiment one | 66 | 180 | 15.9 | 462 |
| Embodiment two | 65 | 187 | 15.5 | 450 |
Table 2 be the food grade white obtained according to embodiment one, embodiment two covering rubber composition used for conveyer belt according to
The result that rower GB/T4806.1 is tested.
| Project | Standard requirement | Embodiment one | Embodiment two |
| 4% acetic acid soak evaporation residue | ≤2000mg/L | 986mg/L | 950mg/L |
| 65% ethanol soak evaporation residue | ≤40mg/L | 26mg/L | 23mg/L |
| Water soak evaporation residue | ≤30mg/L | 17mg/L | 15mg/L |
| N-hexane soak evaporation residue | ≤2000mg/L | 1172mg/L | 1156mg/L |
| Water soak potassium permanganate consumption | ≤40mg/L | 22mg/L | 25mg/L |
| 4% acetic acid soak Zn (zinc) | ≤20mg/L | 12.7mg/L | 13mg/L |
| 4% acetic acid soaks liquid heavy metal (in terms of Pb) | ≤1.0mg/L | 0.02mg/L | 0.02mg/L |
| Residual propylene nitrile | ≤11mg/kg | 0mg/kg | 0mg/kg |
Claims (7)
1. a kind of food grade white covering rubber composition used for conveyer belt, it is characterised in that：It is prepared by following raw material：White Zou
100 parts of piece natural rubber or 1# smoke sheet rubbers, 3~5 parts of zinc oxide, 1~3 part of stearic acid, age resistor is 1.5~3 parts, reinforcing agent
It is 20~30 parts of white carbon, filler is barium sulfate 40~60, and 0.3~0.5 part of sulphur, accelerator is 2.0~3.0 parts.
2. a kind of food grade white according to claim 1 covering rubber composition used for conveyer belt, it is characterised in that：It is described
White carbon is fume colloidal silica Degussa A200 or at least one of precipitated silica HD165M.
3. a kind of food grade white according to claim 1 covering rubber composition used for conveyer belt, it is characterised in that：It is described
Accelerator is used in combination for TETD, DTDM, TMTD.
4. a kind of food grade white according to claim 3 covering rubber composition used for conveyer belt, it is characterised in that：It is described
The consumption of accelerator is that TETD is 0.5~0.8 part, and DTDM is 1~1.4 part, and TMTD is 0.5~0.8 part.
5. a kind of food grade white according to claim 1 covering rubber composition used for conveyer belt, it is characterised in that：It is described
Age resistor is physical antioxidant paraffin and chemical antiager MB.
6. a kind of food grade white according to claim 1 covering rubber composition used for conveyer belt, it is characterised in that：By with
Lower raw material is prepared：100 parts of white Zou's piece natural rubber or 1# smoke sheet rubbers, 4 parts of zinc oxide, 1.5 parts of stearic acid, age resistor stone
0.8 part of wax, 2 parts of antioxidant MB, 25 parts of white carbon, 58 parts of barium sulfate, 0.5 part of sulphur, acceterator TE TD0.6 parts, TMTD0.6
Part, DTDM is 1.3 parts.
7. the production technology of a kind of food grade white according to claim 1 covering rubber composition used for conveyer belt, it is special
Levy and be：Comprise the following steps：
The cleaning of A banburies and rolling equipment：Natural rubber is plasticated with banbury and mill, band during plasticating
The impurity gone out in equipment, until when being plasticated again in equipment, the impurity being visible by naked eyes in sizing material；
B banburyings：It is 90 DEG C that banbury is set temperature, and rotating speed is 60r/min, and input rubber pressurization is plasticated, and is added after the 1min that plasticates
Enter zinc oxide, stearic acid, age resistor etc., then in banburying 0.5min；Elastomeric compound is put into mill bottom sheet after dumping, sizing material stops
Condition is put to park at room temperature 4 hours；
Bis- sections of banburyings of C：The sizing material for parking adds the materials such as reinforcement and filler in banbury, and the temperature setting of banbury is
90 DEG C, rotating speed is 60r/min, and mixing time is 2min；Two-stage mixing glue is put into mill bottom sheet, bin aging bar after dumping
Part is to park at room temperature 4 hours；
D adds vulcanizing agent：The two-stage mixing glue for parking adds the small powders such as vulcanizing agent and accelerator in mill, sets mill
The roll spacing of machine is 2mm, and accelerator is added after plasticating, and the roll spacing of mill is adjusted to 1mm after turning over glue 3 times, it is thin it is logical 6 times after add sulphur
Agent, left and right rubber tapping simultaneously thin logical, adjustment roll spacing to bottom sheet after 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169614.6A CN106928501A (en) | 2017-03-21 | 2017-03-21 | A kind of food grade white covering rubber composition and its production technology used for conveyer belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169614.6A CN106928501A (en) | 2017-03-21 | 2017-03-21 | A kind of food grade white covering rubber composition and its production technology used for conveyer belt |
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| CN106928501A true CN106928501A (en) | 2017-07-07 |
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| CN201710169614.6A Pending CN106928501A (en) | 2017-03-21 | 2017-03-21 | A kind of food grade white covering rubber composition and its production technology used for conveyer belt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400973A (en) * | 2018-10-25 | 2019-03-01 | 安徽立信橡胶科技有限公司 | A kind of excellent torn edges natural gum of food-grade odorlessness high resiliency and preparation process |
| CN112409659A (en) * | 2020-11-24 | 2021-02-26 | 江苏凯嘉橡胶科技股份有限公司 | Food-grade heat-resistant wear-resistant conveyor belt covering rubber and preparation method thereof |
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| CN104109390A (en) * | 2014-06-19 | 2014-10-22 | 滁州天成有机硅高分子材料有限公司 | Food-contacting silicone rubber compound |
| CN104139488A (en) * | 2014-06-30 | 2014-11-12 | 东莞市建东橡胶制品科技有限公司 | Process for preparing soft and hard multi-colored animal chew toy |
| CN105570383A (en) * | 2016-02-19 | 2016-05-11 | 山东日久智能输送科技有限公司 | Pollution-free V belt for agricultural machinery |
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| CN1517396A (en) * | 2003-01-15 | 2004-08-04 | 刘海龙 | New type environmental protection high-performance NR/DMC rubber plastic material |
| CN101698365A (en) * | 2009-04-21 | 2010-04-28 | 张万鹏 | Composite rubber material and preparation method thereof |
| CN103242565A (en) * | 2013-05-21 | 2013-08-14 | 江苏福莱欧工业制带有限公司 | Food conveying belt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400973A (en) * | 2018-10-25 | 2019-03-01 | 安徽立信橡胶科技有限公司 | A kind of excellent torn edges natural gum of food-grade odorlessness high resiliency and preparation process |
| CN112409659A (en) * | 2020-11-24 | 2021-02-26 | 江苏凯嘉橡胶科技股份有限公司 | Food-grade heat-resistant wear-resistant conveyor belt covering rubber and preparation method thereof |
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Application publication date: 20170707 |
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