CN102993515A - Nano bentonite modified chloroprene rubber gasket and preparation method thereof - Google Patents
Nano bentonite modified chloroprene rubber gasket and preparation method thereof Download PDFInfo
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- CN102993515A CN102993515A CN2012104306341A CN201210430634A CN102993515A CN 102993515 A CN102993515 A CN 102993515A CN 2012104306341 A CN2012104306341 A CN 2012104306341A CN 201210430634 A CN201210430634 A CN 201210430634A CN 102993515 A CN102993515 A CN 102993515A
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Abstract
The invention discloses a nano bentonite modified chloroprene rubber gasket. The chloroprene rubber gasket comprises the following raw materials in parts by weight: 135-145 parts of chloroprene rubber (CR)121, 10-15 parts of butyl rubber CBK139, 20-25 parts of SG-5 type PVC (polyvinyl chloride) resins, 3-5 parts of triethyl citrate, 4-5 parts of epoxidized butyl oleate, 2-5 parts of acetyl triethyl citrate, 2-3 parts of zinc oxide, 2-3 parts of magnesium oxide and 1-2 parts of calcium stearate and the like. The chloroprene rubber gasket has the beneficial effects that the gasket has good high temperature resistance, sealability, flame retardance and corrosion resistance and can work in such media as acid, alkali and oil for a long time; the volume and hardness of the gasket are small in variation; the gasket does not adhere to metal surfaces; and the gasket has small friction coefficient and good abrasion resistance and has the advantages of softness of bonding with sealing surfaces, good weathering aging and ozone aging resistance, durability and the like.
Description
Technical field
The present invention relates to a kind of gasket, be specifically related to a kind of nano-bentonite modified neoprene packing pad and preparation method thereof.
Background technology
The neoprene packing pad is a kind of for the inside such as machinery, equipment, pipeline, the material that seals.Be characterized in: high temperature resistant, anti-ozone, anti-natural weathering, vacuum-resistant, anti-gear oil, transformer oil resistant, erosion resistance, good flexibility are widely used in national defense industry and civilian industry.The defectives such as but existing neoprene packing pad sealing effectiveness is undesirable, wear resistance is relatively poor, intensity is low far can not satisfy actual requirement.Therefore researching and developing a kind of high-performance neoprene packing pad has become the task of top priority.Summary of the invention
The objective of the invention is for the deficiencies in the prior art, a kind of nano-bentonite modified neoprene packing pad and preparation method thereof is provided.
The technical solution used in the present invention is as follows:
A kind of nano-bentonite modified neoprene packing pad, the weight part of its constitutive material is: chloroprene rubber CR121 135-145,
Isoprene-isobutylene rubber CBK13910-15, SG-5 type polyvinyl chloride resin 20-25, triethyl citrate 3-5, epoxyoleic acid butyl ester 4-5, acetyl triethyl citrate 2-5, zinc oxide 2-3, magnesium oxide 2-3, calcium stearate 1-2, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.5-1, nano-bentonite 50-60, nano-calcium carbonate 20-30, tetra isopropyl two (dioctyl phosphorous acid acyloxy) titanic acid ester 1-2, oxidation inhibitor DSTP 1-2, N-(β one aminoethyl)-γ-aminopropyl front three (second) TMOS 1-2, accelerator CBS 0.5-1.5, accelerant N a-22 1-2, anti-aging agent ODA 1-2, anti-aging agent TPPD 1-2, modification trees ashes 1-2.
Described modification trees ashes are made by following methods: extremely neutral with deionized water wash again after using first 10-15% hydrogen peroxide dipping trees ashes 2-3h, and oven dry; Add and be equivalent to the nano-sized carbon of trees ashes weight 2-3%, the polyisobutene of 1-2%, the tributyl citrate of 2-3%, the ferrocene of 1-2%, the aluminium hydroxide of 3-5%, high speed 4500-4800r/min stirs 20-30min, and ovendry power is broken into ultrafine powder.
The preparation method of nano-bentonite modified neoprene packing pad may further comprise the steps:
(1) press above-mentioned formulation ratio, the raw material for preparing is sent into refined glue in the rubber mixing machine, glue furnacing temperature is controlled at 80-90 ℃, and the refining glue time is 15-20min;
(2) after refining glue is finished, the taking-up sizing material is paved, after placing at normal temperatures cooling 36-48h, send into and carry out twice sulfuration in the vulcanizing press, the curing temperature of primary vulcanization is controlled at 165-175 ℃, and curing time is 20-30min, and primary vulcanization vulcanizes the second time by complete and then carrying out, for the second time sulfuration is 210-220 ℃, and curing time is 5-6 minute;
(3) goods that will finish sulfuration take out, and through the passer, can become finished product behind the finishing burr.
Beneficial effect of the present invention:
The present invention can improve flame retardant resistance and the erosion resistance of gasket by the trees ashes are carried out modification, and it is low to have a cost, the characteristics that effect is good.The present invention has added nano-bentonite, the wear resistance of the gasket that can obviously increase and physical strength by to formula adjustment.Gasket of the present invention has good resistance to elevated temperatures, sealing property and flame retardant properties; Corrosion resistance is good, in acid, and alkali, energy long term operation in the wet goods medium, its volume and changes in hardness are little, and do not stick on the metallic surface; Frictional coefficient is little, and wear resistance is good; Has the flexibility of being combined with trim; The advantages such as Weather-resistant and ozone ageing performance are good, and be durable in use.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment
A kind of nano-bentonite modified neoprene packing pad, the weight part of its constitutive material is: 142 parts of chloroprene rubber CR121,
Isoprene-isobutylene rubber CBK139Part 12,22 parts of SG-5 type polyvinyl chloride resins, 4 parts of triethyl citrates, 5 parts of epoxyoleic acid butyl esters, 3 parts of acetyl triethyl citrate, 2 parts in zinc oxide, 3 parts in magnesium oxide, 1.5 parts of calcium stearates, 0.8 part in dimethyl dimercapto 2-ethyl hexyl ethanoate tin, 55 parts of nano-bentonites, 24 parts of nano-calcium carbonates, 1.6 parts of tetra isopropyl two (dioctyl phosphorous acid acyloxy) titanic acid ester, 1.8 parts of oxidation inhibitor DSTP, N-(β one aminoethyl)-1.5 parts of γ-aminopropyl front three (second) TMOS, 1.2 parts of accelerator CBSs, 1.5 parts of accelerant N a-22,2 parts of anti-aging agent ODA, 1 part of anti-aging agent TPPD, 2 parts in modification trees ashes.
Wherein, described modification trees ashes are made by following methods: extremely neutral with deionized water wash again after using first 12% hydrogen peroxide dipping trees ashes 3h, and oven dry; Add and be equivalent to the nano-sized carbon of trees ashes weight 3%, 2% polyisobutene, 2% tributyl citrate, 2% ferrocene, 4% aluminium hydroxide, high speed 4500r/min stirs 30min, and ovendry power is broken into ultrafine powder.
The preparation method of nano-bentonite modified neoprene packing pad may further comprise the steps:
(1) press above-mentioned formulation ratio, the raw material for preparing is sent into refined glue in the rubber mixing machine, glue furnacing temperature is controlled at 90 ℃, and the refining glue time is 15min;
(2) after refining glue is finished, the taking-up sizing material is paved, after placing at normal temperatures cooling 42h, send into and carry out twice sulfuration in the vulcanizing press, the curing temperature of primary vulcanization is controlled at 165 ℃, curing time 30min, and primary vulcanization vulcanizes the second time by complete and then carrying out, sulfuration is 210 ℃ for the second time, and curing time is 5-6 minute;
(3) goods that will finish sulfuration take out, and through the passer, can become finished product behind the finishing burr.
The salient features of the gasket that the present embodiment prepares sees the following form 1.
Table 1
Claims (3)
1. nano-bentonite modified neoprene packing pad, it is characterized in that, the weight part of its constitutive material is: chloroprene rubber CR121 135-145, isoprene-isobutylene rubber CBK139 10-15, SG-5 type polyvinyl chloride resin 20-25, triethyl citrate 3-5, epoxyoleic acid butyl ester 4-5, acetyl triethyl citrate 2-5, zinc oxide 2-3, magnesium oxide 2-3, calcium stearate 1-2, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.5-1, nano-bentonite 50-60, nano-calcium carbonate 20-30, tetra isopropyl two (dioctyl phosphorous acid acyloxy) titanic acid ester 1-2, oxidation inhibitor DSTP 1-2, N-(β one aminoethyl)-γ-aminopropyl front three (second) TMOS 1-2, accelerator CBS 0.5-1.5, accelerant N a-22 1-2, anti-aging agent ODA 1-2, anti-aging agent TPPD 1-2, modification trees ashes 1-2.
2. nano-bentonite modified neoprene packing pad according to claim 1, it is characterized in that, described modification trees ashes are made by following methods: extremely neutral with deionized water wash again after using first 10-15% hydrogen peroxide dipping trees ashes 2-3h, and oven dry; Add and be equivalent to the nano-sized carbon of trees ashes weight 2-3%, the polyisobutene of 1-2%, the tributyl citrate of 2-3%, the ferrocene of 1-2%, the aluminium hydroxide of 3-5%, high speed 4500-4800r/min stirs 20-30min, and ovendry power is broken into ultrafine powder.
3. the preparation method of a nano-bentonite modified neoprene packing pad as claimed in claim 1 is characterized in that may further comprise the steps:
(1) press above-mentioned formulation ratio, the raw material for preparing is sent into refined glue in the rubber mixing machine, glue furnacing temperature is controlled at 80-90 ℃, and the refining glue time is 15-20min;
(2) after refining glue is finished, the taking-up sizing material is paved, after placing at normal temperatures cooling 36-48h, send into and carry out twice sulfuration in the vulcanizing press, the curing temperature of primary vulcanization is controlled at 165-175 ℃, and curing time is 20-30min, and primary vulcanization vulcanizes the second time by complete and then carrying out, for the second time sulfuration is 210-220 ℃, and curing time is 5-6 minute;
(3) goods that will finish sulfuration take out, and through the passer, can become finished product behind the finishing burr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430634.1A CN102993515B (en) | 2012-11-01 | 2012-11-01 | Nano bentonite modified chloroprene rubber gasket and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430634.1A CN102993515B (en) | 2012-11-01 | 2012-11-01 | Nano bentonite modified chloroprene rubber gasket and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102993515A true CN102993515A (en) | 2013-03-27 |
| CN102993515B CN102993515B (en) | 2014-07-02 |
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| CN201210430634.1A Expired - Fee Related CN102993515B (en) | 2012-11-01 | 2012-11-01 | Nano bentonite modified chloroprene rubber gasket and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351495A (en) * | 2013-06-24 | 2013-10-16 | 安徽春辉仪表线缆集团有限公司 | Mixed solvent resistant chloroprene rubber sealing pad and preparation method thereof |
| CN103408852A (en) * | 2013-07-03 | 2013-11-27 | 安徽方兴实业有限公司 | Heat-resistant and ozone-resistant rubber sealing ring material and preparation method thereof |
| CN103524951A (en) * | 2013-09-18 | 2014-01-22 | 铜陵新创流体科技有限公司 | Novel flame-retardant sealing ring |
| CN103613806A (en) * | 2013-11-12 | 2014-03-05 | 铜陵市肆得科技有限责任公司 | Novel sealing pad material and preparation method thereof |
| CN103724741A (en) * | 2013-12-16 | 2014-04-16 | 芜湖万润机械有限责任公司 | Compounded rubber seal pad material and preparation method thereof |
| CN105202183A (en) * | 2015-10-08 | 2015-12-30 | 蚌埠冠宜型材科技有限公司 | High-temperature-resistant sealing gasket used for casting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070075505A1 (en) * | 2005-09-29 | 2007-04-05 | Nichias Corporation | Sheet-like gasket and process for manufacturing same |
| CN101583658A (en) * | 2006-08-25 | 2009-11-18 | 萨克特本化学有限责任公司 | Barium sulfate-containing composite |
| CN101792546A (en) * | 2009-02-01 | 2010-08-04 | 陈汇宏 | Latex mixing or solution mixing preparation method of rubber powder-rubber compound composition |
-
2012
- 2012-11-01 CN CN201210430634.1A patent/CN102993515B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070075505A1 (en) * | 2005-09-29 | 2007-04-05 | Nichias Corporation | Sheet-like gasket and process for manufacturing same |
| CN101583658A (en) * | 2006-08-25 | 2009-11-18 | 萨克特本化学有限责任公司 | Barium sulfate-containing composite |
| CN101792546A (en) * | 2009-02-01 | 2010-08-04 | 陈汇宏 | Latex mixing or solution mixing preparation method of rubber powder-rubber compound composition |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351495A (en) * | 2013-06-24 | 2013-10-16 | 安徽春辉仪表线缆集团有限公司 | Mixed solvent resistant chloroprene rubber sealing pad and preparation method thereof |
| CN103408852A (en) * | 2013-07-03 | 2013-11-27 | 安徽方兴实业有限公司 | Heat-resistant and ozone-resistant rubber sealing ring material and preparation method thereof |
| CN103408852B (en) * | 2013-07-03 | 2016-03-23 | 安徽方兴实业有限公司 | A kind of heat-resisting ozone-resistant rubbber sealing ring material and preparation method thereof |
| CN103524951A (en) * | 2013-09-18 | 2014-01-22 | 铜陵新创流体科技有限公司 | Novel flame-retardant sealing ring |
| CN103524951B (en) * | 2013-09-18 | 2016-03-09 | 铜陵新创流体科技有限公司 | A kind of fire-retardant sealing-ring |
| CN103613806A (en) * | 2013-11-12 | 2014-03-05 | 铜陵市肆得科技有限责任公司 | Novel sealing pad material and preparation method thereof |
| CN103724741A (en) * | 2013-12-16 | 2014-04-16 | 芜湖万润机械有限责任公司 | Compounded rubber seal pad material and preparation method thereof |
| CN105202183A (en) * | 2015-10-08 | 2015-12-30 | 蚌埠冠宜型材科技有限公司 | High-temperature-resistant sealing gasket used for casting |
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| CN102993515B (en) | 2014-07-02 |
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