CN101906221A - Super-thick soft rubber and preparation method thereof - Google Patents
Super-thick soft rubber and preparation method thereof Download PDFInfo
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- CN101906221A CN101906221A CN2009100573746A CN200910057374A CN101906221A CN 101906221 A CN101906221 A CN 101906221A CN 2009100573746 A CN2009100573746 A CN 2009100573746A CN 200910057374 A CN200910057374 A CN 200910057374A CN 101906221 A CN101906221 A CN 101906221A
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Abstract
The invention relates to the field of rubber industry and discloses super-thick soft rubber and the preparation method thereof. The super-thick soft rubber comprises the following components by weight portion: 100 portions of natural rubber 1#, 5-40 portions of carbon black N33, 1-4 portions of stearic acid, 0.75-2.5 portions of N-phenyl-alpha-naphthylamine, 1-4 portions of N-isopropyl-N'-steephenyl-para-phenylene diamine, 1-4 portions of paraffin 58#, 5-40 portions of talcum powder, 1.5-5 portions of brenstone, 2.5-7 portions of magnesium oxide, 4-11 portions of zinc oxide, 0.75-2.5 portions of accelerating agent D, 1-4 portions of solid coumarone, 10-60 portions of barium sulfate, 4-12 portions of dibutyl sebacate and 1.5-4 portions of pine tar. The preparation method comprises the following steps: plasticating the natural rubber 1# until the plasticity of the natural rubber 1# ranges from 0.6 to 0.65, adding other materials, mixing, forming rubber sheets, and molding and vulcanizing the rubber sheets, wherein . The assisting step of partial qualitative die clamping is carried out before vulcanization so as to obtain the super-thick soft rubber through one-step stable molding. The product is not easily deformed during vulcanization and can still maintain the dimensional stability and accuracy in the molding process.
Description
Technical field
The present invention relates to the rubber industry field, be specially a kind of super-thick soft rubber and preparation thereof.
Background technology
In project equipments such as the grinding machine of environment protection desulphurization device, mining machinery, conveyor, generally need use etch-proof lining.
General lining material commonly used has Resins, epoxy, metal or rubber etc.Rubber lining is because its good performance and rational cost performance have more wide application prospect.
Along with the raising of environmental requirement, the demand of this kind equipment is increasing, and the rubber lined requirement of use is also being improved constantly.Present rubber lined salient features requires to be soft (GB/T18241.2-2000 rubber lining part 2, Shao Shi A 65 ± 5 hardness; And now the client is 40 ± 5 to the requirement of product), super thick (customer demand is 30～80mm usually, and other products is no more than 20mm usually at present).
Present rubber lining is that matrix is successively fitted with the thick offset plate of 3mm normally, and its hardness is Shao Shi A 65 ± 5, and total thickness is no more than 20mm generally at 3～10mm; When thickness surpassed 10mm, the once shaped dimensional stability after the sulfuration was relatively poor, and along with the increase of thickness, dimensional stability descends.
Therefore, the super-thick soft rubber that needs a kind of method to obtain having good dimensional stability, not yielding during sulfuration, overcome the defective of prior art.
Summary of the invention
The present invention aims to provide a kind of super-thick soft rubber, has good dimensional stability, can stablize manufacturing.
The present invention also provides the preparation method of above-mentioned super-thick soft rubber.
A kind of super-thick soft rubber, its prescription is formed the raw material that comprises following mass parts:
Natural rubber 1# 100
Carbon black N330 5～40
Stearic acid 1～4
N-phenyl-a-naphthylamine (antioxidant A) 0.75～2.5
N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA) 1～4
Paraffin 58# 1～4
Talcum powder 5～40
Sulphur 1.5～5
Magnesium oxide 2.5～7
Zinc oxide 4～11
Vulkacit D 0.75～2.5
Solid coumarone 1～4
Barium sulfate 10～60
Uniflex DBS 4～12
Stockholm tar 1.5～4
Preferred, its prescription is the raw material that comprises following mass parts:
Natural rubber 1# 100
Carbon black N330 5～20
Stearic acid 1～4
N-phenyl-a-naphthylamine (antioxidant A) 0.75～2.5
N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA) 1～4
Paraffin 58# 1～4
Talcum powder 5～25
Sulphur 1.5～5
Magnesium oxide 2.5～7
Zinc oxide 4～11
Vulkacit D 0.75～2.5
Solid coumarone 1～4
Barium sulfate 10～40
Uniflex DBS 4～12
Stockholm tar 1.5～4
The preparation method of this super-thick soft rubber is, 1# plasticates with natural rubber, and making plasticity number is 0.6～0.65, and other raw materials are added mixing aftershaping and sulfuration.
Before sulfuration, to fix earlier and formalize, the film that is about to make behind the raw material blending is extruded, and the adhesive tape that obtains is cut aftershaping and fixing, makes product under soft super thick situation, once stablizes moulding after sulfuration.
Sulfuration process is: with pressurized with compressed air to 0.3～0.4MPa, keep air pressure that temperature is brought up to 130～140 ℃, progressively replace pressurized air with saturation steam simultaneously; Under saturated vapour pressure 0.3～0.4MPa, 130～140 ℃ of conditions, reacted 3～4 hours.
Described natural rubber is for No. one the natural rubber that meets standard GB/T8081-2008 regulation.
N-phenyl-a-naphthylamine and N-sec.-propyl-N '-diphenyl-para-phenylene diamine are anti-aging agent.
Paraffin 58# is a melting range at 52～62 ℃ paraffin.
Paraffin 58#, solid coumarone, Uniflex DBS and Stockholm tar are softening agent.
Zinc oxide, magnesium oxide and stearic acid are for promoting auxiliary agent.
Carbon black N330, talcum powder and barium sulfate are reinforcing filler.
Can obtain super-thick soft rubber by aforesaid method.
The present invention has carried out optimization and refinement to prescriptions such as employed anti-aging agent, softening agent and promotion auxiliary agents, can utilize conventional rubber preparing device and technology to produce.The super-thick soft rubber that obtains is corrosion-resistant, and is not yielding in when sulfuration, can once shaped; Can also keep size stability and accuracy in the moulding process.Meet the requirement of GB/T18241.2-2000 and client agreement.
Embodiment
Embodiment 1
Divide 1,2 section to plasticate 20kg natural rubber 1#, its plasticity number is brought up to 0.6～0.65; Put into the broken repeatedly glue of mill then, squeeze and roll, and add successively step by step:
(1) 2kg carbon black N330,2kg talcum powder, 7kg barium sulfate
(2) 0.2kg N-phenyl-a-naphthylamine (antioxidant A), 0.2kg N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA)
(3) 0.4kg stearic acid, 0.4kg paraffin 58#, 0.5kg magnesium oxide, 0.4kg solid coumarone (pulverizing the back adds)
(4) 0.8kg Uniflex DBS, 0.3kg Stockholm tar, 1.2kg zinc oxide
(5) 0.4kg sulphur, 0.15kg vulkacit D
Above-mentioned raw materials is added, play 5～6 of triangle bags behind the mixing, draw thin-pass 8 times, make sizing material full and uniform, again slice on request; Film is put into the special-purpose forcing machine of rubber, and extruding obtains the offset plate of thickness 3-4mm.
The offset plate moulding is cut, successively be wrapped in outside the metallic framework, reach and fix with anchor clamps after predetermined size and the shape and formalize, vulcanize again.Sulfuration process is: with pressurized with compressed air to 0.3～0.4MPa, keep air pressure that temperature is brought up to 130～140 ℃, progressively replace pressurized air with saturation steam simultaneously; Under saturated vapour pressure 0.3～0.4MPa, 130～140 ℃ of conditions, reacted 3～4 hours; It is constant to keep-up pressure, and cools the temperature to 85～95 ℃, progressively replaces saturation steam with pressurized air simultaneously.
Embodiment 2
Divide 1,2 section to plasticate 20kg natural rubber 1#, make it plasticity number and bring up to 0.6～0.65; Break glue repeatedly, squeeze and roll to putting into mill then, and add successively step by step:
(1) 3kg carbon black N330,1kg talcum powder, 4kg barium sulfate
(2) 0.2kg N-phenyl-a-naphthylamine (antioxidant A), 0.8kg N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA)
(3) 0.8kg stearic acid, 0.2kg paraffin 58#, 1kg magnesium oxide, 0.2kg solid coumarone (pulverizing the back adds)
(4) 0.8kg Uniflex DBS, 0.4kg Stockholm tar, 0.8kg zinc oxide
(5) 0.6kg sulphur, 0.4kg vulkacit D
Above-mentioned raw materials is added, play 5～6 of triangle bags behind the mixing, draw thin-pass 10 times, make sizing material full and uniform, slice is on request put into the special-purpose forcing machine of rubber with film again, pushes the offset plate that obtains thickness 3-4mm.
Moulding and sulfuration process are with embodiment 1.
Embodiment 3
Divide 1,2 section to plasticate 20kg natural rubber 1#, its plasticity number is brought up to 0.6～0.65; Break glue repeatedly, squeeze and roll to putting into mill then, and add successively step by step:
(1) 2kg carbon black N330,2kg talcum powder, 4kg barium sulfate
(2) 0.4kg N-phenyl-a-naphthylamine (antioxidant A), 0.4kg N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA)
(3) 0.2kg stearic acid, 0.8kg paraffin 58#, 0.6kg magnesium oxide, 0.6kg solid coumarone (pulverizing the back adds)
(4) 2kg Uniflex DBS, 0.6kg Stockholm tar, 0.8kg zinc oxide
(5) 0.8kg sulphur, 0.2kg vulkacit D
Above-mentioned raw materials is added respectively, play 5～6 of triangle bags behind the mixing, draw thin-pass 8 times, make sizing material full and uniform, slice is on request put into the special-purpose forcing machine of rubber with film again, and extruding obtains the offset plate of thickness 3-4mm.
Moulding and sulfuration process are with embodiment 1.
Embodiment 4
Divide 1,2 section to plasticate 20kg natural rubber 1#, its plasticity number is brought up to 0.6～0.65; Break glue repeatedly, squeeze and roll to putting into mill then, and add successively step by step:
(1) 1kg carbon black N330,4kg talcum powder, 4kg barium sulfate
(2) 0.2kg N-phenyl-a-naphthylamine (antioxidant A), 0.2kg N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA)
(3) 0.2kg stearic acid, 0.4kg paraffin 58#, 0.6kg magnesium oxide, 0.4kg solid coumarone (pulverizing the back adds)
(4) 0.8kg Uniflex DBS, 0.3kg Stockholm tar, 2kg zinc oxide
(5) 0.4kg sulphur, 0.2kg vulkacit D
Above-mentioned raw materials is added respectively, play 5～6 of triangle bags behind the mixing, draw thin-pass 8 times, make sizing material full and uniform, slice is on request put into the special-purpose forcing machine of rubber with film again, and extruding obtains the offset plate of thickness 3-4mm.
Moulding and sulfuration process are with embodiment 1.
Embodiment 5
Divide 1,2 section to plasticate 20kg natural rubber 1#, its plasticity number is brought up to 0.6～0.65; Break glue repeatedly, squeeze and roll to putting into mill then, and add successively step by step:
(1) 1kg carbon black N330,4kg talcum powder, 2kg barium sulfate
(2) 0.15kg N-phenyl-a-naphthylamine (antioxidant A), 0.2kg N-sec.-propyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA)
(3) 0.4kg stearic acid, 0.4kg paraffin 58#, 1.2kg magnesium oxide, 0.2kg solid coumarone (pulverizing the back adds)
(4) 1.2kg Uniflex DBS, 0.3kg Stockholm tar, 0.8kg zinc oxide
(5) 0.3kg sulphur, 0.15kg vulkacit D
Above-mentioned raw materials is added respectively, play 5～6 of triangle bags behind the mixing, draw thin-pass 8 times, make sizing material full and uniform, slice is on request put into the special-purpose forcing machine of rubber with film again, and extruding obtains the offset plate of thickness 3-4mm.
Moulding and sulfuration process are with embodiment 1.
Embodiment 1-5 product detects with the method for GB/T 18241.2-2000 regulation, and its physical and mechanical properties meets A～C generic request; Thickness can reach 80mm, and hardness can reach 40 ± 5.
Claims (4)
1. a super-thick soft rubber is characterized in that, prescription is formed the raw material that comprises following mass parts:
Natural rubber 1# 100
Carbon black N330 5～40
Stearic acid 1～4
N-phenyl-a-naphthylamine 0.75～2.5
N-sec.-propyl-N '-diphenyl-para-phenylene diamine 1～4
Paraffin 58# 1～4
Talcum powder 5～40
Sulphur 1.5～5
Magnesium oxide 2.5～7
Zinc oxide 4～11
Vulkacit D 0.75～2.5
Solid coumarone 1～4
Barium sulfate 10～60
Uniflex DBS 4～12
Stockholm tar 1.5～4.
2. the described a kind of super-thick soft rubber of claim 1 is characterized in that, prescription is formed the raw material that comprises following mass parts:
Natural rubber 1# 100
Charcoal N330 5～20
Stearic acid 1～4
N-phenyl-a-naphthylamine 0.75～2.5
N-sec.-propyl-N '-diphenyl-para-phenylene diamine 1～4
Paraffin 58# 1～4
Talcum powder 5～25
Sulphur 1.5～5
Magnesium oxide 2.5～7
Zinc oxide 4～11
Vulkacit D 0.75～2.5
Solid coumarone 1～4
Barium sulfate 10～40
Uniflex DBS 4～12
Stockholm tar 1.5～4.
3. the preparation method of claim 1 or 2 described a kind of super-thick soft rubbers is characterized in that 1# plasticates with natural rubber, makes plasticity number reach 0.6～0.65, and other raw materials are added mixing aftershaping and sulfuration.
4. the preparation method of the described a kind of super-thick soft rubber of claim 3, it is characterized in that, described sulfuration process is: with pressurized with compressed air to 0.3～0.4MPa, keep air pressure that temperature is brought up to 130～140 ℃, progressively replace pressurized air with saturation steam simultaneously; Under saturated vapour pressure 0.3～0.4MPa, 130～140 ℃ of conditions, reacted 3～4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100573746A CN101906221A (en) | 2009-06-05 | 2009-06-05 | Super-thick soft rubber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100573746A CN101906221A (en) | 2009-06-05 | 2009-06-05 | Super-thick soft rubber and preparation method thereof |
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| CN101906221A true CN101906221A (en) | 2010-12-08 |
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| CN2009100573746A Pending CN101906221A (en) | 2009-06-05 | 2009-06-05 | Super-thick soft rubber and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739897A (en) * | 2014-01-13 | 2014-04-23 | 四川隆盛科发实业有限公司 | High-proportion rubber and preparation method thereof |
| CN104592570A (en) * | 2015-01-09 | 2015-05-06 | 芜湖航天特种电缆厂 | Corrosion-resistant rubber jacket as well as preparation method and application thereof |
| CN106750599A (en) * | 2016-12-19 | 2017-05-31 | 江苏格普新材料有限公司 | A kind of rubber lining and preparation method thereof |
-
2009
- 2009-06-05 CN CN2009100573746A patent/CN101906221A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739897A (en) * | 2014-01-13 | 2014-04-23 | 四川隆盛科发实业有限公司 | High-proportion rubber and preparation method thereof |
| CN103739897B (en) * | 2014-01-13 | 2016-03-16 | 四川隆盛科发实业有限公司 | A kind of High-proportion rubber and preparation method thereof |
| CN104592570A (en) * | 2015-01-09 | 2015-05-06 | 芜湖航天特种电缆厂 | Corrosion-resistant rubber jacket as well as preparation method and application thereof |
| CN106750599A (en) * | 2016-12-19 | 2017-05-31 | 江苏格普新材料有限公司 | A kind of rubber lining and preparation method thereof |
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Application publication date: 20101208 |