CN102675700A - Environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for motor unit train - Google Patents
Environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for motor unit train Download PDFInfo
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- CN102675700A CN102675700A CN2011100613736A CN201110061373A CN102675700A CN 102675700 A CN102675700 A CN 102675700A CN 2011100613736 A CN2011100613736 A CN 2011100613736A CN 201110061373 A CN201110061373 A CN 201110061373A CN 102675700 A CN102675700 A CN 102675700A
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Abstract
The invention discloses an environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for a motor unit train, which comprises the following components by weight percent: 5-36 percent of fibers, 8-20 percent of rubbers, 15-42 percent of filling agents, 30-70 percent of fire retardant, 0.3-8 percent of coupling agent, 0.8-6 percent of compounding agents and 0.5-2 percent of activating agents. Because asbestos fibers are replaced by aramid pulp fibers, the harm to the human body in the production process and the use process of connection gaskets of equipment such as the motor unit train is eliminated; and gasket materials with good shock absorption and flame-retardant performances, which meet the requirement on installation connection part of the equipment such as the motor unit train are supplied; and meanwhile, the product has good strength, liquid resistance and heat resistance after the product is formed to ensure the flame-retardant shock absorption performance; and therefore, the gasket materials can be used as connection gaskets for installing the motor unit equipment and also can be used as other sealing materials having a requirement on the flame retardance.
Description
Technical field
The present invention relates to the cushioning material that a kind of supply equipment connects usefulness, in particular, is relevant be used for the environmental-friendly type oil damping damping on the motor train unit train, fire-retardant cushioning material.
Background technology
Generally, the cushioning material of traditional device connection place all adopts the asbestos rubber panel material, but asbestos are harmful; Distortion is big; Do not possess oil resistant, damping, fire-retardant characteristic again, therefore the cushioning material processed of this rubber plate that the contains asbestos equipment such as motor train unit train that are applied to move are at a relatively high speed installed the connection place, are the technical requirementss that does not meet its work; For example along with the increase of duration of service; Use the equipment connection place of the cushioning material of paronite the slowly increase with noise will occur shaking, the cushioning material that has local or all ignitions and the phenomenon of scaling loss, so that cushioning material is damaged very soon.So, this cushioning material just needs often to safeguard or change, thereby influences the normal operation of train and increase maintenance cost.
Summary of the invention
The objective of the invention is to be used on the environmental-friendly type oil damping damping on the motor train unit train, fire-retardant cushioning material for the defective that overcomes equipment use asbestos rubber cushioning materials such as above-mentioned motor train unit train provides a kind of.
For realizing above-mentioned purpose, the present invention provides a kind of composition and weight percent thereof that is used for the environmental-friendly type oil damping damping on the motor train unit train, fire-retardant cushioning material to be:
Fiber 5-36%
Rubber 8-20%
Weighting agent 15-42%
Fire retardant 30%-70%
Coupling agent 0.3-8%
Synergist S-421 95 0.8--6%
Acvator 0.5%-2%
Wherein, said fiber is ppta-pulp fibre or is made up of polymeric amide aramid fiber and spun glass; The latter's the polymeric amide aramid fiber and the ratio of components of spun glass: ppta-pulp fibre is that 12-92%, spun glass are 8-88%.Said ppta-pulp fibre is the nucleus as the rubber strongthener, and it is too low to be less than 12% intensity, and it is too high and if can not can influence quality product by homodisperse to be higher than 92% cost; Described content of glass fiber is less than 8% and loses the use meaning, makes density of material too high and make that to process cushioning material crisp firmly more than 88%, influences the damping damping.
Said rubber is nitrile rubber, mainly comprises paracril.In another preferred embodiment, said rubber comprises nitrile rubber and tree elastomer, and wherein, said tree elastomer accounts for the 3-10% of rubber total amount, and all the other are nitrile rubber.Because rubber is as the elastic adhesive core material, in said rubber content 8-20%, be less than 8% can intensity and elasticity not enough and influence the product use properties, cause the excessive specification of quality that do not reach of material creep greater than 20%.
The filler is kaolin and / or calcium carbonate, aluminum hydroxide of the flame retardant is, for example, the high Qian earth and aluminum hydroxide as a rubber filler and flame retardant materials that will improve the material density and creep resistance .Weighting agent and flame retardant agent content can not be very little with too many; Very little can't fiberfill fibers and the space of rubber; And product is lost performance should be arranged, too many then cause material not reach that elasticity requires or can't moulding, therefore should under the prerequisite of fire-retardant requirement, suitably adjust both ratios.
Said coupling agent is a silane coupling agent, and its consumption is the 0.3-8% of cushioning material total amount.It is the linking agent as filamentary material, filler and rubber, to improve the good distribution and the anchor power of product.Be less than 0.3% DeGrain, be higher than 8% and material surface lost performance should be arranged.
Synergist S-421 95 is vulcanizing agent, inhibitor, tinting material, and content is the 0.8-6% of product population.Here, material and quantity difference that employed vulcanizing agent and general rubber product are used always are little, comprise sulphur, promotor, zinc oxide.Said tinting material comprises that titanium is dark green, carbon black; And inhibitor is generally rubber anti-ageing agent.Here, in the cushioning material total amount, vulcanizing agent content is 0.2-2.8%, and the inhibitor consumption is 0.1-0.2%.Colorant content is 0.5-3%.For tinting material, its add-on is less than 0.5% and does not play painted effect, can not get the color that should want more than 3%.In addition, can be expressed as according to the composition of Synergist S-421 95 and with weight percent ratio of components form:
Vulcanizing agent 6-84%
Inhibitor 3-6%
All the other are tinting material
Said acvator is a titanate ester, and it comprises positive butyl(tetra)titanate, positive titanium ethanolate, positive titanium isopropylate or their combination, and its consumption is 0.5%-2%, and its core is effectively combining with rubber behind the kaolin surface active.Acvator content is less than 0.5% and does not have activation, influences material property more than 2%.In another preferred embodiment, said acvator comprises p-diaminodiphenyl sulphur and titanate ester, and said p-diaminodiphenyl sulphur accounts for the 20-30% of acvator total amount, and all the other are titanate ester, so that the kaolin filler is carried out surface activation process.
The manufacture craft of cushioning material of the present invention: comprise through the fly-cutter type high speed granulator to the preparatory shredding of fiber, rubber mould experienced predecomposition, through the plough type batch mixing; At linear pressure hot and cold roller roll-forming more than 8 tons; Obtain in preparations such as hot-rolling pressure or compression molding post cures again, obtain the cushioning material of damping shock absorption and flame retardant properties.
The preparatory shredding of fiber must reach shredding and want thoroughly through fly-cutter type high speed granulation shredding, and the ppta-pulp fibre that detects by an unaided eye does not have clustering phenomena,
Rubber is with kaolin through moulding experienced predecomposition, lime carbonate, white lake, viton, tree elastomer, vulcanizer and the white uniform mixing of tinting material such as titanium viridescent, carbon black such as sulphur, promotor, zinc oxide.
The plough type batch mixing is that the requirement batch mixing is wanted evenly; Must not there be raw material to exist; Otherwise just can not get the quality product thought; Comprising the crosslinked action of filamentary material, filler and rubber and said titanate ester and/or p-diaminodiphenyl sulphur being carried out the kaolin surfaces coated, improve the activation of anchor power as the silane coupling agent of coupling agent.
Then, the cushioning material of become opening is that moulding obtains with hot-rolling pressure and/or dull and stereotyped post cure on cold and hot rolling.The format roll moulding of described cold and hot rolling is adopted more than the linear pressure 8-10 ton; Said hot-rolling is pressed or dull and stereotyped Cheng Zhangji sulfuration preparation process is to hope for success that the temperature of moulding big roller and pony roll of a machine remains on temperature 100--130 ℃ (look formula for a product and adjust) respectively, the linear pressure between pony roll is to carry out under the 8--10 ton situation greatly; Pressure is lower than 8 tons, and then material can be loose, and then density of material is too high to be higher than 10 tons.Compression molding is a secondary, sulfurized temperature/time/pressure; Temperature 125-145 ℃, pressure 80-110kg/m
2, 8--30 minute working lipe, visual product thickness of pressure and time and suitably increase or reduce is obtained the cushioning material of damping shock absorption and flame retardant properties, satisfies the cushion material of equipment such as EMUs by the fire-retardant lining characteristic of damping of adorning the junction.
The present invention importantly substitutes fibrous magnesium silicate with ppta-pulp fibre; The equipment such as production process and motor train unit train that solved connect liner in the harm of use to human body; And provide equipment such as meeting motor train unit train that connection place cushioning material needs, that good damping and flame retardant properties are arranged is installed; Simultaneously, to have adopted p-diaminodiphenyl sulphur, metatitanic acid fat that the surfaces coated of materials such as aramid fiber made fiber pulp fiber, glass, white lake, kaolin, lime carbonate, rubber is carried out anchors technological because of the present invention, good intensity and anti-fluidity arranged after making formed product; Thermotolerance; Guaranteeing fire-retardant damping performance, so it both can be used for EMUs equipment and installs and connect liner, and the sealing material that can be used as fire-retardant requirement again uses.
Embodiment
Embodiment one
The composition of cushioning material and weight percent thereof are as follows:
Fiber 18%
Rubber 14%
Weighting agent 20%
Fire retardant 40%
Coupling agent 3%
Synergist S-421 95 4%
Acvator 1 %
The step of the ME of the foregoing description one cushioning material is following:
Step 1; Preparatory shredding of fiber and mixing at first, join ppta-pulp fibre and spun glass and to carry out the granulation shredding in the tablets press with the part by weight of 3:2 (promptly 60% and 40%); Through 30 minutes to the processing of 1 hour time, obtain not having the fluffy opening fiber of conglomeration; Then, be added to the fiber of shredding in the stirrer with weighting agent and fire retardant and mix fully, form the fiber filled compound.Above-mentioned fiber filled compound comprises kaolin and lime carbonate and with the part by weight of 4:1 weigh batching in addition.
Step 2, rubber are moulded experienced predecomposition and plough type batch mixing, are in a usual manner rubber to be moulded to practice to make rubber plasticization, homogenizing; Then; The fiber filled compound that step 1 is obtained and put together and add toluene solvant (adding) and make the plough type batch mixing through moulding experienced rubber; Through the mixing of certain hour, become uniform compound after, in this compound, add coupling agent, Synergist S-421 95 and acvator and carry out remix; Obtain the cohesion shape mixing blank of cushioning material, the slab that is transplanted on a machine hot-rolling bag complex to become.
In the Synergist S-421 95 of above-mentioned compound, the vulcanizing agent that contains sulphur, promotor and zinc oxide accounts for that Synergist S-421 95 total amount 50%, inhibitor account for total amount 1.4%, all the other are the tinting material that contains titanium viridescent and carbon black.Acvator comprises p-diaminodiphenyl sulphur and titanate ester, and wherein, p-diaminodiphenyl sulphur accounts for 25% of acvator total amount, and all the other are titanate ester, to realize the activation treatment of kaolin filling surface.Coupling agent adopts silane coupling agent, will produce crosslinked action to filamentary material, filler and rubber.
Step 3, the slab that the one-tenth of cushioning material is opened are the multiple moulding of training on 10 tons of cold and hot rollers of linear pressure, and the big roll temperature of moulding is that 120 ℃ ± 5 ℃ temperature with pony roll are controlled at 25 ℃ below the ㎜, obtains through hot-rolling pressure and/or the sulfuration of sheet-leveling machine second-heating again.135 ℃ ± 2 ℃ of the temperature of compression molding, pressure 100kg/m
2, 20-25 minute working lipe.
Dull and stereotyped Cheng Zhangji sulfuration is post cure, sees through the test result of cushioning material each item performance of above ME processing to be shown in table 1.
In addition, also can comprise an additional step,, can also make two slabs bondings be combined into one through hot-rolling pressure or dull and stereotyped Cheng Zhangji for the cushioning material of thickness oversize specification requirement.
Table 1 environment-friendly type oil resistant, damping shock absorption, fire-retardant cushioning material Main physical performance
Embodiment two
The composition of cushioning material and weight percent thereof are as follows:
Fiber 11%
Rubber 12%
Weighting agent 19%
Fire retardant 48%
Coupling agent 3.5%
Synergist S-421 95 5%
Acvator 1.5%
The manufacturing technology steps of the foregoing description two cushioning materials is identical with embodiment one, but along with the content of fiber and rubber reduces relative embodiment one its transverse tensile strength decline, 9Mpa nearly, and processing technology reduces.
Embodiment three
The composition of cushioning material and weight percent thereof are as follows:
Fiber 26%
Rubber 17%
Weighting agent 15%
Fire retardant 32%
Coupling agent 2.2%
Synergist S-421 95 6%
Acvator 1.8%
The manufacturing technology steps of the foregoing description three cushioning materials is identical with embodiment one; But along with the content of rubber increases relative embodiment one its thermotolerance decline; The minimizing of flame retardant agent content reduces its flame retardant properties and the minimizing of coupling agent makes the product tightness not enough, thereby influences the hardness and the processing characteristics of product.
Claims (10)
1. one kind is used for the environmental-friendly type oil damping damping on the motor train unit train, fire-retardant cushioning material, and its composition and weight percent are:
Fiber 5-36%
Rubber 8-20%
Weighting agent 15-42%
Fire retardant 30%-70%
Coupling agent 0.3-8%
Synergist S-421 95 0.8-6%
Acvator 0.5%-2%.
2. environmental-friendly type oil damping damping as claimed in claim 1, fire-retardant cushioning material is characterized in that,
Said fiber is made up of ppta-pulp fibre and spun glass;
Said rubber is nitrile rubber;
Said weighting agent is kaolin and/or lime carbonate;
Said fire retardant is a white lake;
Said coupling agent is a silane coupling agent;
Said Synergist S-421 95 is made up of vulcanizing agent, inhibitor, tinting material;
Said acvator is a titanate ester.
3. environmental-friendly type oil damping damping as claimed in claim 2, fire-retardant cushioning material is characterized in that said nitrile rubber is paracril.
4. environmental-friendly type oil damping damping as claimed in claim 1, fire-retardant cushioning material is characterized in that, said fibrous in its ratio of components ppta-pulp fibre be that 12-92%, spun glass are 8-88%.
5. environmental-friendly type oil damping damping as claimed in claim 1, fire-retardant cushioning material is characterized in that said rubber comprises nitrile rubber and tree elastomer, and wherein, said tree elastomer accounts for the 3-10% of rubber total amount, and all the other are nitrile rubber.
6. environmental-friendly type oil damping damping as claimed in claim 5, fire-retardant cushioning material is characterized in that said nitrile rubber is paracril.
7. environmental-friendly type oil damping damping as claimed in claim 1, fire-retardant cushioning material is characterized in that said acvator comprises p-diaminodiphenyl sulphur and titanate ester, the said 20-30% that accounts for the acvator total amount, and all the other are titanate ester.
8. environmental-friendly type oil damping damping as claimed in claim 2, fire-retardant cushioning material is characterized in that said vulcanizing agent comprises sulphur, promotor, zinc oxide.
9. environmental-friendly type oil damping damping as claimed in claim 2, fire-retardant cushioning material is characterized in that said tinting material comprises titanium viridescent and/or carbon black.
10. like claim 1 or 7 described environmental-friendly type oil damping dampings, fire-retardant cushioning material, it is characterized in that said titanate ester comprises positive butyl(tetra)titanate, positive titanium ethanolate, positive titanium isopropylate or two or more the combination among them.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061373.6A CN102675700B (en) | 2011-03-15 | 2011-03-15 | Environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for motor unit train |
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|---|---|---|---|
| CN201110061373.6A CN102675700B (en) | 2011-03-15 | 2011-03-15 | Environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for motor unit train |
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| CN102675700B CN102675700B (en) | 2014-04-30 |
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Cited By (6)
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| CN111114039A (en) * | 2019-12-20 | 2020-05-08 | 株洲时代新材料科技股份有限公司 | Environment-friendly composite damping plate for vibration and noise reduction and preparation method thereof |
| CN111114039B (en) * | 2019-12-20 | 2022-06-03 | 株洲时代新材料科技股份有限公司 | Environment-friendly composite damping plate for vibration and noise reduction and preparation method thereof |
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| CN102675700B (en) | 2014-04-30 |
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