(3) summary of the invention
The present invention, in order to make up the deficiencies in the prior art, provides that a kind of composition is simple, the by product produced in anti-aging agent, sulfidation greatly reduces without the need to using, wholesomeness significantly improves can the conveying belt of contact food.
The present invention is achieved through the following technical solutions:
Can the conveying belt of contact food, comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following parts by weight:
Terpolymer EP rubber 90-110 part, white carbon black 20-40 part, nano-calcium carbonate 20-40 part, 3M vulcanizing agent 1-2 part, zinc oxide 3-5 part, paraffin oil 4-6 part;
This can the preparation method of conveying belt of contact food, comprises the steps:
By terpolymer EP rubber in Banbury mixer at 50 DEG C mixing 3 minutes, then add white carbon black, nano-calcium carbonate, 3M vulcanizing agent, zinc oxide and paraffin oil and obtain rubber cover after mixing 15 minutes at 120 DEG C, by rolling press, rubber cover is evenly coated on the outside of trevira layer of cloth again, obtaining this can the conveying belt of contact food.
This can the conveying belt of contact food, and comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following parts by weight:
Terpolymer EP rubber 100 parts, white carbon black 30 parts, nano-calcium carbonate 30 parts, 3M vulcanizing agent 1.5 parts, 4 parts, zinc oxide, paraffin oil 5 parts;
This can the preparation method of conveying belt of contact food, comprises the steps:
By terpolymer EP rubber in Banbury mixer at 50 DEG C mixing 3 minutes, then add white carbon black, nano-calcium carbonate, 3M vulcanizing agent, zinc oxide and paraffin oil and obtain rubber cover after mixing 15 minutes at 120 DEG C, by rolling press, rubber cover is evenly coated on the outside of trevira layer of cloth again, obtaining this can the conveying belt of contact food.
The resistance to ozone of terpolymer EP rubber, the ageing-resistant performance such as heat-resisting, weather-proof are excellent, can be widely used in the fields such as trolley part, building water-proof material, electric wire and cable jacket, heat-resistant rubber hose, adhesive tape, automotive sealant;
White carbon black is used in colorful rubber goods and carries out reinforcement with alternative carbon black, meets the needs of white or translucent product.White carbon black has superpower adhesive power, anti tear and heat-resistant aging resistance simultaneously, thus in black rubber goods also alternative part carbon black, to obtain high-quality rubber item, as off-the-highway tire, engineering tyre, radial-ply tyre etc.;
Nano-calcium carbonate and rubber have good consistency, have reinforcement, a performance that filling, toning, improvement add technique and goods, can make rubber easily mixing, easily disperse, mixing rear colloid is soft, and rubber surface is smooth; The extensibility of goods, tensile strength, tear strength etc. can be made to have the raising of essence; Add the rubber of sodium rice calcium carbonate, its cross-linked rubber rises long rate, tear fracture performance, compression set and the energy of resistance to tropism, all than the height adding general calcium carbonate.It not only can be used alone as reinforcement and filler material, and can according to Production requirement and other stopping composition with the use of, as carbon black, white carbon black, fine particle calcium carbonate coarse whiting, titanium dioxide, potter's clay etc., reach reinforcement, filling, toning, improve complete processing, improve product properties and reduce the object of gum content;
Zinc oxide is mainly used in rubber industry and makes strengthening agent and promoting agent, is also used as tinting material and the weighting agent of white size, has good erosion resistance, tear strength and elasticity to make rubber;
3M vulcanizing agent is particularly suitable for transparent article sulfuration, as glass cement sole, transparency is one of kind best in peroxide vulcanizing system, vulcanization rate is fast, compression set is little, be applicable to ethylene-propylene rubber(EPR), paracril, silicon rubber, chlorosulfonated polyethylene, polyurethane rubber sulfuration, can be used for requirement nontoxic, or food grade, pharmaceutical grade goods aspect;
Paraffin oil can be used for improving rubber resistance to deterioration and increasing snappiness.
The present invention can the beneficial effect of conveying belt of contact food be: rubber used adopts has the excellent terpolymer EP rubber of ageing-resistant performance, without the need to using anti-aging agent, sizing material has outstanding ageing-resistant performance, 3M vulcanizing agent is selected to make vulcanizing agent, eliminate the compositions such as sulphur, promotor, vulcanization aid, make system component very simple, chemical material kind used decreases more than 60%.Because composition is simple, the by product produced in sulfidation also greatly reduces, contained lower-molecular substance also corresponding minimizing in sizing material simultaneously, cross-linked rubber smell and sanitary condition all be improved significantly, wholesomeness improves greatly; Final obtained conveying belt is safe and reliable, not painted when contact vegetables, medicinal material etc., clean feel and the sense of security higher, do casing ply by trevira layer of cloth, polyester fiber cloth has the features such as nontoxic, tasteless, dimensional stabilizing, and rubber cover is nontoxic, tasteless, anti-aging, tear-resistant, not easily cooperating microorganisms, can be widely used in conveying vegetables, food and daily necessities etc.
(4) embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited thereto, and the preparation method in embodiment is customary preparation methods, no longer describes in detail.
Embodiment 1:
This can the conveying belt of contact food, and comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following weight:
Terpolymer EP rubber double centner, white carbon black 30 kilograms, nano-calcium carbonate 30 kilograms, 3M vulcanizing agent 1.5 kilograms, 4 kilograms, zinc oxide, paraffin oil 5 kilograms;
This can the preparation method of conveying belt of contact food, adopts following steps:
By terpolymer EP rubber in Banbury mixer at 50 DEG C mixing 3 minutes, then add white carbon black, nano-calcium carbonate, 3M vulcanizing agent, zinc oxide and paraffin oil and obtain rubber cover after mixing 15 minutes at 120 DEG C, by rolling press, rubber cover is evenly coated on the outside of trevira layer of cloth again, obtaining this can the conveying belt of contact food.
Embodiment 2:
This can the conveying belt of contact food, and comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following weight:
Terpolymer EP rubber 90 kilograms, white carbon black 20 kilograms, nano-calcium carbonate 20 kilograms, 3M vulcanizing agent 1 kilogram, 3 kilograms, zinc oxide, paraffin oil 4 kilograms.
Preparation method is with embodiment 1.
Embodiment 3:
This can the conveying belt of contact food, and comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following weight:
Terpolymer EP rubber 110 kilograms, white carbon black 40 kilograms, nano-calcium carbonate 40 kilograms, 3M vulcanizing agent 2 kilograms, 5 kilograms, zinc oxide, paraffin oil 6 kilograms.
Preparation method is with embodiment 1.
Embodiment 4:
This can the conveying belt of contact food, and comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following weight:
Terpolymer EP rubber 95 kilograms, white carbon black 25 kilograms, nano-calcium carbonate 25 kilograms, 3M vulcanizing agent 1.2 kilograms, 3.5 kilograms, zinc oxide, paraffin oil 4.5 kilograms.
Preparation method is with embodiment 1.
Embodiment 5:
This can the conveying belt of contact food, and comprise trevira layer of cloth, be coated with rubber cover in the outside of trevira layer of cloth, described rubber cover is made up of the raw material of following weight:
Terpolymer EP rubber 105 kilograms, white carbon black 35 kilograms, nano-calcium carbonate 35 kilograms, 3M vulcanizing agent 1.8 kilograms, 4.5 kilograms, zinc oxide, paraffin oil 5.5 kilograms.
Preparation method is with embodiment 1.