CN104650383A - Special halogen-free composite flame retardant for rubber and preparation method of flame retardant - Google Patents
Special halogen-free composite flame retardant for rubber and preparation method of flame retardant Download PDFInfo
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- CN104650383A CN104650383A CN201410806091.8A CN201410806091A CN104650383A CN 104650383 A CN104650383 A CN 104650383A CN 201410806091 A CN201410806091 A CN 201410806091A CN 104650383 A CN104650383 A CN 104650383A
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Abstract
The invention discloses a special halogen-free composite flame retardant for rubber. The flame retardant consists of various components in parts by mass: 40-60 parts of melamine borate, 30-40 parts of melamine orthophosphate and 10-20 parts of magnesium borate. By combining three flame retardants which can fully develop mutual synergistic effects, the composite flame retardant disclosed by the invention can improve carbon-forming rate and carbon-forming stability and significantly increase flame-retardant efficiency, so as to reduce the total dosage of the flame retardant to the greatest extent on the premise of guaranteeing a flame-retardant performance to achieve relatively low hardness and relatively good physical and mechanical properties as well as processing performance. The composite flame retardant, due to high flame-retardant efficiency, can achieve a relatively good flame-retardant performance with relatively low filling amount in ethylene propylene rubber; therefore, the composite flame retardant can be used for preparing a halogen-free flame-retardant ethylene propylene rubber material which is excellent in performance, and in particular for preparing a halogen-free flame-retardant ethylene propylene rubber material which is low in hardness.
Description
Technical field
The invention belongs to biomedicine technical field, be specifically related to the special Halogenless composite fire retardant of a kind of rubber and manufacture method thereof.
Background technology
Although high, the required addition of halogenated flame retardant flame retarding efficiency of the prior art is few, little to polymer physics mechanical impact, a large amount of cigarette and toxic gas can be released due to during burning, be unfavorable for the personnel escape of scene of fire and the rescue of property.So along with the reinforcement of people's environmental consciousness in recent years, under a lot of working condition, the use of halogenated flame retardant receives increasing restriction.
In addition, phosphorous-nitrogen system bittern-free fire retardant of the prior art with phosphorus, nitrogen for main component, because it is not halogen-containing, meanwhile, because the polymkeric substance containing expanding fire retardant is when burning, surface can form carbonaceous foam carbon-coating, can heat insulation, oxygen barrier, press down cigarette, and molten drop behavior can be prevented, pay attention to so this based flame retardant is more and more subject to people, become a development in recent years based flame retardant faster.
But, although phosphorus-nitrogen containing flame retardant has many above advantages, also there is a lot of following problem:
First expansion type phosphor nitrogenated flame retardant must possess the effect that acid source, carbon source and source of the gas just can play the best.But the unit molecule fire retardant integrating acid source, carbon source and source of the gas is at present considerably less, moreover these fire retardants only work to containing the superpolymer of special groups, as to only by carbon hydrogen element form to the non-constant of ethylene-propylene rubber(EPR) effect.Therefore its flame retarding efficiency is lower.
Secondly, the reinforcing difference of phosphorus-nitrogen containing flame retardant.Owing to being the fire retardant of organic synthesis, particle is relatively thick, this unlike metal hydroxides can do very thin, even can accomplish nano level.Therefore, comparatively speaking, the physical and mechanical properties impact of phosphorus-nitrogen containing flame retardant on polymeric matrix is larger.
Although current halogen-free flameproof ethylene-propylene rubber(EPR) research is many, the preparation of the halogen-free flameproof ethylene-propylene rubber(EPR) of high oxygen index V0 level soft remains a difficult problem.Reason is that efficient flame-retarding agent is fewer, and common metal hydroxides and phosphorus-nitrogen containing flame retardant must be filled and just can be realized fire-retardant very in a large number, and the large hardness ratio that must cause of loading level is higher.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the object of this invention is to provide the special Halogenless composite fire retardant of a kind of rubber be made up of three kinds of fire retardants, it can give full play to three kinds of fire retardants synergistic effect each other, improve carbon forming rate and become carbon stability, significantly improve flame retarding efficiency, thus realize the consumption reducing total fire retardant under the prerequisite ensureing flame retardant properties as far as possible, to obtain the good physical and mechanical properties of lower hardness and processing characteristics.
For achieving the above object, the technical solution used in the present invention is: the special Halogenless composite fire retardant of a kind of rubber comprises each component of following mass parts:
Boric acid trimeric cyanamide 40-60 part;
Trimeric cyanamide orthophosphoric acid salt 30-40 part;
Magnesium borate 10-20 part.
Preferred technical scheme, in the special Halogenless composite fire retardant of described rubber, the mass parts of each component and each component is as follows:
Boric acid trimeric cyanamide 45-55 part;
Trimeric cyanamide orthophosphoric acid salt 33-37 part;
Magnesium borate 13-17 part.
Further preferred version, in the special Halogenless composite fire retardant of described rubber, the mass parts of each component and each component is as follows:
Boric acid trimeric cyanamide 50 parts;
Trimeric cyanamide orthophosphoric acid salt 35 parts;
Magnesium borate 15 parts.
The present invention also provides the making method of the special Halogenless composite fire retardant of more than one rubber, add in high speed mixer after respectively boric acid trimeric cyanamide, trimeric cyanamide orthophosphoric acid salt and magnesium borate being weighed according to mass parts above-mentioned separately and mix 15-20 minute, be i.e. the special Halogenless composite fire retardant of rubber of obtained described correspondence.
The present invention relative to the beneficial effect of prior art is: this fire retardant of the present invention is used in ethylene-propylene rubber(EPR), have filling fraction few, oxygen index is large, and vertical combustion grade is high, the advantage that smoke density is little, this fire retardant can prepare the soft halogen-free flameproof ethylene-propylene rubber(EPR) material that hardness is less than 50 degree.Simultaneously owing to being white powder, without carbon black, red phosphorus etc., be convenient to prepare colorful flame-retardant rubber.
In addition, the present invention is that employing three kinds of fire retardants are composite, give full play to synergistic effect each other, improve carbon forming rate and become carbon stability, significantly improve flame retarding efficiency, thus realize the consumption reducing total fire retardant under the prerequisite ensureing flame retardant properties as far as possible, to obtain the good physical and mechanical properties of lower hardness and processing characteristics.Because the flame retarding efficiency of this composite flame-retardant agent is high, just good flame retardant properties can be obtained at lower loading level in ethylene-propylene rubber(EPR), therefore with the halogen-free flameproof ethylene-propylene rubber(EPR) material of its processability excellence, the halogen-free flameproof ethylene-propylene rubber(EPR) material of soft can especially can be made of it.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Embodiment 1, the special Halogenless composite fire retardant of a kind of rubber of the present invention can obtain according to following methods:
Weighing instrument is used to take MB(boric acid trimeric cyanamide respectively) 50 kilograms, MP(trimeric cyanamide orthophosphoric acid salt) 35 kilograms, magnesium borate 15 kilograms is poured in high speed mixer and is mixed 15-20 minute, namely obtains ethylene-propylene rubber(EPR) special efficient fire retardant double centner.
Embodiment 2, the special Halogenless composite fire retardant of rubber is at EPDM(terpolymer EP rubber) in application as follows,
First by after ethylene-propylene rubber(EPR) bag roller, add zinc oxide, stearic acid, carbon black and composite flame-retardant agent of the present invention successively, then add sulphur and promotor; Finally carry out sulfuration.Described cure conditions is: temperature is 180 degrees Celsius, and curing time length is 10 minutes; Pressure is 15Mpa.
We are according to test foundation (hardness, GB/T 531-2009; Tensile strength, GB/T 528-2009; Oxygen index and vertical combustion, GB/T 10707-2008) EPDM adding the special Halogenless composite fire retardant of rubber of the present invention is tested, obtain following result:
By above form, we can find out that the EPDM adding the special Halogenless composite fire retardant of rubber of the present invention has the following advantages:
Filled stone wax oil 50 parts in ethylene-propylene rubber(EPR), when amount of flame-retardant agent 90 parts, the hardness of ethylene-propylene rubber(EPR) can be reduced to 50 degree, physical and mechanical properties still keeps fine---tensile strength in 7MPa, tensile yield more than 550%, physicals meets the requirement of ethylene-propylene rubber(EPR) intensity, tensile yield in standard A STMD 2000, meets most of mold pressing, extrudes the requirement of series products; Excellent fireproof performance, vertical combustion grade all reaches V0 level, and oxygen index is more than 28%, and such flame retardant properties meets most application scenario.
Owing to market there is no the efficient flame-retarding agent of new single molecular structure, and compounded technology can not improve High-efficiency flame retardant composition, so the halogen-free flame retardants of preparation soft is very difficult.Scheme provided by the invention, can when physical and mechanical properties and flame retardant properties all keep very high, and hardness can be low to moderate 50 degree, and this there is no report in the literature.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (4)
1. the special Halogenless composite fire retardant of rubber, is characterized in that, the mass parts of its each component and each component is as follows:
Boric acid trimeric cyanamide 40-60 part;
Trimeric cyanamide orthophosphoric acid salt 30-40 part;
Magnesium borate 10-20 part.
2. the special Halogenless composite fire retardant of a kind of rubber according to claim 1, is characterized in that, in the special Halogenless composite fire retardant of described rubber, the mass parts of each component and each component is as follows:
Boric acid trimeric cyanamide 45-55 part;
Trimeric cyanamide orthophosphoric acid salt 33-37 part;
Magnesium borate 13-17 part.
3. the special Halogenless composite fire retardant of a kind of rubber according to claim 2, is characterized in that, in the special Halogenless composite fire retardant of described rubber, the mass parts of each component and each component is as follows:
Boric acid trimeric cyanamide 50 parts;
Trimeric cyanamide orthophosphoric acid salt 35 parts;
Magnesium borate 15 parts.
4. the making method according to the special Halogenless composite fire retardant of described rubber one of any in claims 1 to 3, it is characterized in that, add in high speed mixer after respectively boric acid trimeric cyanamide, trimeric cyanamide orthophosphoric acid salt and magnesium borate being weighed according to mass parts described separately and mix 15-20 minute, be i.e. the special Halogenless composite fire retardant of rubber of obtained described correspondence.
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| CN201410806091.8A CN104650383A (en) | 2014-12-23 | 2014-12-23 | Special halogen-free composite flame retardant for rubber and preparation method of flame retardant |
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| CN201410806091.8A CN104650383A (en) | 2014-12-23 | 2014-12-23 | Special halogen-free composite flame retardant for rubber and preparation method of flame retardant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516989A (en) * | 2022-01-29 | 2022-05-20 | 江门市鑫辉密封科技有限公司 | EPDM halogen-free flame-retardant rubber and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854309A (en) * | 1996-09-30 | 1998-12-29 | Blount; David H. | Flame retardant compositions utilizing amino condensation compounds |
| CN103059336A (en) * | 2012-12-31 | 2013-04-24 | 见龙（宁波）国际贸易有限公司 | High-flame-retardance composite heat-insulating foam material and preparation method thereof |
| CN103146090A (en) * | 2011-12-07 | 2013-06-12 | 滁州格美特科技有限公司 | Weather-resistant, flame retardant and impact-resistant polystyrene material, and preparation method |
| CN103351494A (en) * | 2013-04-27 | 2013-10-16 | 安徽省康利亚实业有限公司 | Modified filler-containing electric cable sheath material |
-
2014
- 2014-12-23 CN CN201410806091.8A patent/CN104650383A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854309A (en) * | 1996-09-30 | 1998-12-29 | Blount; David H. | Flame retardant compositions utilizing amino condensation compounds |
| CN103146090A (en) * | 2011-12-07 | 2013-06-12 | 滁州格美特科技有限公司 | Weather-resistant, flame retardant and impact-resistant polystyrene material, and preparation method |
| CN103059336A (en) * | 2012-12-31 | 2013-04-24 | 见龙（宁波）国际贸易有限公司 | High-flame-retardance composite heat-insulating foam material and preparation method thereof |
| CN103351494A (en) * | 2013-04-27 | 2013-10-16 | 安徽省康利亚实业有限公司 | Modified filler-containing electric cable sheath material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516989A (en) * | 2022-01-29 | 2022-05-20 | 江门市鑫辉密封科技有限公司 | EPDM halogen-free flame-retardant rubber and preparation method thereof |
| CN114516989B (en) * | 2022-01-29 | 2023-09-15 | 江门市鑫辉密封科技有限公司 | EPDM halogen-free flame retardant rubber and preparation method thereof |
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