CN102993515B - 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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- CN102993515B CN102993515B CN201210430634.1A CN201210430634A CN102993515B CN 102993515 B CN102993515 B CN 102993515B CN 201210430634 A CN201210430634 A CN 201210430634A CN 102993515 B CN102993515 B CN 102993515B
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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
Neoprene packing pad is a kind of for the inside such as machinery, equipment, pipeline, the material sealing.Be characterized in: high temperature resistant, resistance to ozone, resistance to natural weathering, vacuum-resistant, resistance to gear oil, transformer oil resistant, erosion resistance, good flexibility, be widely used in national defense industry and civilian industry.The defects such as but existing neoprene packing pad sealing effectiveness is undesirable, wear resistance is poor, intensity is low, far can not meet actual requirement.Therefore research and develop a kind of high-performance neoprene packing pad and become the task of top priority.Summary of the invention
The object 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 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 mono-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: first use after 10-15% hydrogen peroxide dipping trees ashes 2-3h, more extremely neutral with deionized water wash, 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, comprises the following steps:
(1) by above-mentioned formulation ratio, the raw material preparing is sent in rubber mixing machine and refined glue, glue furnacing temperature is controlled at 80-90 ℃, and the refining glue time is 15-20min;
(2) after refining glue completes, taking-up sizing material is paved, place at normal temperatures after cooling 36-48h, send into and in vulcanizing press, carry out twice sulfuration, the curing temperature of primary vulcanization is controlled at 165-175 ℃, and curing time is 20-30min, and and then primary vulcanization is complete vulcanizes for the second time, sulfuration is for the second time 210-220 ℃, and curing time is 5-6 minute;
(3) goods that complete sulfuration are taken out, through passer, after finishing burr, can become finished product.
Beneficial effect of the present invention:
The present invention, by trees ashes are carried out to modification, can improve flame retardant resistance and the erosion resistance of gasket, and it is low to have cost, the feature that effect is good.The present invention, by formula adjustment, has added nano-bentonite, the wear resistance of the gasket that can obviously increase and physical strength.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 wet goods medium, its volume and changes in hardness are little, and do not stick on metallic surface; Frictional coefficient is little, and wear resistance is good; There is the flexibility of being combined with trim; The advantages such as Weather-resistant and ozone ageing performance are good, durable in use.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment
A 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, zinc oxide, 3 parts, magnesium oxide, 1.5 parts of calcium stearates, 0.8 part, 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 mono-aminoethyl) 1.5 parts of-γ-aminopropyl front three (second) TMOSs, 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, modification trees ashes.
Wherein, described modification trees ashes are made by following methods: first use after 12% hydrogen peroxide dipping trees ashes 3h, more extremely neutral with deionized water wash, 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, comprises the following steps:
(1) by above-mentioned formulation ratio, the raw material preparing is sent in rubber mixing machine and refined glue, glue furnacing temperature is controlled at 90 ℃, and the refining glue time is 15min;
(2) after refining glue completes, taking-up sizing material is paved, place at normal temperatures after cooling 42h, send into and in vulcanizing press, carry out twice sulfuration, the curing temperature of primary vulcanization is controlled at 165 ℃, curing time 30min, and and then primary vulcanization is complete vulcanizes for the second time, sulfuration is 210 ℃ for the second time, and curing time is 5-6 minute;
(3) goods that complete sulfuration are taken out, through passer, after finishing burr, can become finished product.
The salient features of the gasket that the present embodiment prepares sees the following form 1.
Table 1
Claims (1)
1. a 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 mono-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,
Its preparation method comprises the following steps:
(1) by above-mentioned formulation ratio, the raw material preparing is sent in rubber mixing machine and refined glue, glue furnacing temperature is controlled at 80-90 ℃, and the refining glue time is 15-20min;
(2) after refining glue completes, taking-up sizing material is paved, place at normal temperatures after cooling 36-48h, send into and in vulcanizing press, carry out twice sulfuration, the curing temperature of primary vulcanization is controlled at 165-175 ℃, and curing time is 20-30min, and and then primary vulcanization is complete vulcanizes for the second time, sulfuration is for the second time 210-220 ℃, and curing time is 5-6 minute;
(3) goods that complete sulfuration are taken out, through passer, after finishing burr, can become finished product;
Described modification trees ashes are made by following methods: first use after 10-15% hydrogen peroxide dipping trees ashes 2-3h, more extremely neutral with deionized water wash, 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.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430634.1A CN102993515B (en) | 2012-11-01 | 2012-11-01 | Nano bentonite modified chloroprene rubber gasket and preparation method thereof |
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| CN102993515A CN102993515A (en) | 2013-03-27 |
| CN102993515B true CN102993515B (en) | 2014-07-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007092904A (en) * | 2005-09-29 | 2007-04-12 | Nichias Corp | Sheet gasket and its manufacturing method |
| CN101583658A (en) * | 2006-08-25 | 2009-11-18 | 萨克特本化学有限责任公司 | Barium sulfate-containing composite |
| CN101792546B (en) * | 2009-02-01 | 2013-11-20 | 陈汇宏 | Latex mixing or solution mixing preparation method of rubber powder-rubber compound composition |
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