CN105348668A - Decomposition control-based hydromagnesite high efficiency fire retardant and preparation method thereof - Google Patents
Decomposition control-based hydromagnesite high efficiency fire retardant and preparation method thereof Download PDFInfo
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- CN105348668A CN105348668A CN201510724150.1A CN201510724150A CN105348668A CN 105348668 A CN105348668 A CN 105348668A CN 201510724150 A CN201510724150 A CN 201510724150A CN 105348668 A CN105348668 A CN 105348668A
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Abstract
The invention discloses a decomposition control-based hydromagnesite high efficiency fire retardant and a preparation method thereof, and belongs to the fields of inorganic fire retardation and organic synergistic fire retardation. The decomposition control-based hydromagnesite high efficiency fire retardant comprises, by mass, 20-30 parts of hydromagnesite (HM), 20-30 parts of polyvinyl chloride (PVC), 2 parts of a calcium-zinc heat stabilizer and 3 parts of chlorinated paraffin. The action principle of the fire retardant is that gaseous HCl generated after decomposition of the PVC promotes decomposition of the HM and the ratio and the structure are regulated to realize good decomposition performance of the HM in the combustion process, so the fire retardant prepared through the method has high efficiency, and the method has the advantages of low production cost, strong operability and obvious action effect.
Description
Technical field
The present invention relates to a kind of basic magnesite and PVC compound flame retardant preparation method, belong to inorganic fire-retarded and organic cooperative flame retardant field.
Background technology
Basic magnesite, as a kind of inorganic combustion inhibitor, has nontoxic, non-volatile, good stability, economic environmental protection and the advantages such as aboundresources.Basic magnesite has excellent suppression hydrogenchloride ability and splendid smoke elimination performance.
Basic magnesite is a kind of natural magnesium basic carbonate, is the mineral compound that a kind of polarity is stronger, because its crystal internal strain makes plane of crystal with positive charge, there is wetting ability, crystal grain trends towards secondary aggregation, even if dried like this, also there is very important moisture in crystal.
Although basic magnesite has the advantages such as nontoxic, smokeless, antiacid, non-corrosiveness, filling, the incarbonization of decomposition temperature high, efficient promotion base material as fire retardant and extensively receives publicity.But because inorganic combustion inhibitor has stronger polarity and wetting ability, poor with the consistency of synthetic materials, addition is large, interface is difficult to form good combination and bonding, mutual reactive force is very little, when R and D inorganic combustion inhibitor, usually cause flame retardant effect low because of this problem, the problems such as mechanical properties decrease.
General employing coupling agent is to inorganic combustion inhibitor through modifying surface, and inorganic combustion inhibitor can strengthen the avidity of particle to synthetic materials matrix after surface treatment.As adopted silane coupling agent and titanate coupling agent process basic magnesite, but often very faint to the raising of processing characteristics and mechanical property.The decomposition behavior that PVC can change basic magnesite if add, can make high-temperature zone decompose and decompose raising flame retardant resistance in advance.
Summary of the invention
The object of the invention is in conjunction with existing technology, provide a kind of new flame-retardant formulations to improve flame retardant properties.And make PP with the addition of composite processing performance that this fire retardant obtains and mechanical property all have significant lifting, are a kind of workable, the method that flame retarding efficiency is high.
To achieve these goals, technical scheme of the present invention is as follows: a kind of based on decomposing the basic magnesite efficient flame-retarding agent controlled, under its moiety and mass fraction be:
Basic magnesite 20-30 part;
Polyvinyl chloride (PVC) 20-30 part;
Calcium zinc stabilizer 2 parts;
Clorafin 3 parts;
Wherein said basic magnesite is the basic magnesite of particle diameter less than 2 ~ 30 μm.
Wherein said polyvinyl chloride is that the polymerization degree is lower, and such as, molecular weight 5W ~ 11W, the polymerization degree is 800, the lower easy processing of the polymerization degree.
Wherein said calcium zinc heat stabilizer is characterized in that wherein said calcium zinc stabilizer is that calcium salt and zinc salt are composited, and its mass ratio is 1:1; Wherein calcium salt is calcium stearate, and zinc salt is Zinic stearas.
Wherein said clorafin, as the softening agent of flame retardant, also has flame retardant resistance, moisture resistance chemical resistance simultaneously.
Above-mentioned a kind of preparation method based on decomposing the basic magnesite efficient flame-retarding agent controlled, carries out according to following step:
(1) use Banbury mixer to carry out banburying temperature PVC, calcium zinc stabilizer, clorafin and HM by proportioning and be set as 190 DEG C.
(2) pulverize and sieve with pulverizer, the mixture obtained is basic magnesite efficient flame-retarding agent again.
Above-mentioned a kind of based on decomposing the basic magnesite efficient flame-retarding agent controlled, its feature is that decomposing by PVC the HCL produced promotes that HM decomposes, in advance to play highly effective flame-retardant effect.
The beneficial effect that the present invention has: basic magnesite and the composite fire retardant obtained of PVC have good anti-flaming function, and cost is low.Simultaneously basic magnesite can absorb polyvinyl chloride and to burn the HCL gas discharged, and the decomposition behavior of its basic magnesite is changed, reaches the effect of highly effective flame-retardant.
Embodiment
Basic magnesite of the present invention is characterized in that wherein said basic magnesite is particle diameter less than 2 ~ 30 μm, the HM that such as Laizhou Hong Lei Trade Co., Ltd. provides.
Wherein said polyvinyl chloride is that the polymerization degree is such as lower, molecular weight 5W ~ 11W, and the polymerization degree is 800, the lower easy processing of the polymerization degree, and the trade mark that such as Changzhou curry favour profit trade Co., Ltd provides is the PVC of S-700.
Wherein said calcium zinc heat stabilizer is characterized in that wherein said calcium zinc stabilizer is that calcium salt and zinc salt are composited thermo-stabilizer, and its mass ratio is 1:1.Such as calcium salt is calcium stearate, zinc salt is provided by Di Quan Chemical Co., Ltd. of Xiamen City for Zinic stearas.
Wherein said clorafin, as the softening agent of flame retardant, also has flame retardant resistance, moisture resistance chemical resistance simultaneously.Such as Suzhou Sai Pahan specialty oil products company limited provides.
Based on decomposing the basic magnesite efficient flame-retarding agent controlled, prepare according to following step:
(1) use Banbury mixer to carry out banburying temperature PVC, calcium zinc stabilizer, clorafin and HM by proportioning and be set as 190 DEG C.
(2) pulverize and sieve with pulverizer, the mixture obtained is basic magnesite efficient flame-retarding agent again.
3., based on decomposing the basic magnesite efficient flame-retarding agent controlled, its feature is that decomposing by PVC the HCL produced promotes that HM decomposes, in advance to play highly effective flame-retardant effect.
Embodiment 1
Formula: polyvinyl chloride 30 parts, calcium zinc stabilizer 2 parts, clorafin 3 parts, basic magnesite 20 parts.
Homogenizer is used to mix polyvinyl chloride, calcium zinc stabilizer, clorafin by proportioning, obtain polyvinyl chloride (PVC) Compound, re-use convection oven or vacuum drying oven is fully dry to it, dried mixture (polyvinyl chloride) and basic magnesite are carried out mechanically mixing, basic magnesite efficient flame-retarding agent can be obtained, then be ground into powder with pulverizer.Then the basic magnesite efficient flame-retarding agent of preparation is carried out mixing banburying with PP by a certain percentage, setting Banbury mixer temperature is 190 DEG C, rotating speed 20r/min, banburying 5 minutes, the sample obtained uses vulcanizing press to carry out compressing tablet, by being cut into tensile bars and oxygen index test bars after compressing tablet, by (GB/T1040-2006) and (GB/T2406-1993) standard, it is carried out to the mensuration of mechanical property and oxygen index.Measurement result is as table 1.
Embodiment 2
Formula: polyvinyl chloride 25 parts, calcium zinc stabilizer 2 parts, clorafin 3 parts, basic magnesite 25 parts, polypropylene (PP) 50 parts
Homogenizer is used to mix polyvinyl chloride, calcium zinc stabilizer, clorafin by proportioning, obtain polyvinyl chloride (PVC) Compound, re-use convection oven or vacuum drying oven is fully dry to it, dried mixture (polyvinyl chloride) and basic magnesite are carried out mechanically mixing, basic magnesite efficient flame-retarding agent can be obtained, then be ground into powder with pulverizer.Then the basic magnesite efficient flame-retarding agent of preparation is carried out mixing banburying with PP by a certain percentage, setting Banbury mixer temperature is 190 DEG C, rotating speed 20r/min, banburying 5 minutes, the sample obtained uses vulcanizing press to carry out compressing tablet, by being cut into tensile bars and oxygen index test bars after compressing tablet, by (GB/T1040-2006) and (GB/T2406-1993) standard, it is carried out to the mensuration of mechanical property and oxygen index.Measurement result is as table 1.
Embodiment 3
Formula: polyvinyl chloride 20 parts, calcium zinc stabilizer 2 parts, clorafin 3 parts, basic magnesite 30 parts, polypropylene (PP) 50 parts
Homogenizer is used to mix polyvinyl chloride, calcium zinc stabilizer, clorafin by proportioning, obtain polyvinyl chloride (PVC) Compound, re-use convection oven or vacuum drying oven is fully dry to it, dried mixture (polyvinyl chloride) and basic magnesite are carried out mechanically mixing, basic magnesite efficient flame-retarding agent can be obtained, then be ground into powder with pulverizer.Then the basic magnesite efficient flame-retarding agent of preparation is carried out mixing banburying with PP by a certain percentage, setting Banbury mixer temperature is 190 DEG C, rotating speed 20r/min, banburying 5 minutes, the sample obtained uses vulcanizing press to carry out compressing tablet, by being cut into tensile bars and oxygen index test bars after compressing tablet, by (GB/T1040-2006) and (GB/T2406-1993) standard, it is carried out to the mensuration of mechanical property and oxygen index.Measurement result is as table 1.
Comparative example 1
Formula: basic magnesite 50 parts, polypropylene (PP) 50 parts
Carried out by a certain percentage mixing banburying with PP by basic magnesite, setting Banbury mixer temperature is 190 DEG C, rotating speed 20r/min, banburying 5 minutes.The sample obtained uses vulcanizing press to carry out compressing tablet, making tensile bars and oxygen index test bars, by (GB/T1040-2006) and (GB/T2406-1993) standard, it being carried out to the mensuration of mechanical property and oxygen index after compressing tablet by cutting out sample.Measurement result is as table 1.
Comparative example 2
Formula: magnesium hydroxide 50 parts, polypropylene (PP) 50 parts
Carried out by a certain percentage mixing banburying with PP by magnesium hydroxide, setting Banbury mixer temperature is 190 DEG C, rotating speed 20r/min, banburying 5 minutes.The sample obtained uses vulcanizing press to carry out compressing tablet, making tensile bars and oxygen index test bars, by (GB/T1040-2006) and (GB/T2406-1993) standard, it being carried out to the mensuration of mechanical property and oxygen index after compressing tablet by cutting out sample.Measurement result is as table 1.
Table 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| LOI | 25 | 24 | 25 | 22 | 24 |
| Tensile strength | 32.28 | 31.54 | 29.38 | 23.55 | 25.17 |
It is low that the efficient flame-retarding agent that as can be seen from the above table prepared by the present invention has production cost, is a kind of workable, improves the advantages such as the flame retardant resistance of basic magnesite.
Claims (6)
1. based on decomposing the basic magnesite efficient flame-retarding agent controlled, under it is characterized in that its moiety and mass fraction are:
Basic magnesite (HM) 20-30 part;
Polyvinyl chloride (PVC) 20-30 part;
Calcium zinc stabilizer 2 parts;
Clorafin 3 parts.
2. according to claim 1 a kind of based on decomposing the basic magnesite efficient flame-retarding agent controlled, it is characterized in that wherein said basic magnesite is the basic magnesite of particle diameter less than 2 ~ 30 μm.
3. according to claim 1 a kind of based on decomposing the basic magnesite efficient flame-retarding agent controlled, it is characterized in that wherein said polyvinyl chloride is that the polymerization degree is lower, such as, molecular weight 5W ~ 11W, the polymerization degree is 800, the lower easy processing of the polymerization degree.
4. according to claim 1 a kind of based on decomposing the basic magnesite efficient flame-retarding agent controlled, it is characterized in that wherein said calcium zinc heat stabilizer is characterized in that wherein said calcium zinc stabilizer is that calcium salt and zinc salt are composited, its mass ratio is 1:1; Wherein calcium salt is calcium stearate, and zinc salt is Zinic stearas.
5. a kind of basic magnesite efficient flame-retarding agent based on decomposing control according to claim 1, is characterized in that the softening agent of wherein said clorafin as flame retardant, also has flame retardant resistance, moisture resistance chemical resistance simultaneously.
6. a kind of preparation method based on decomposing the basic magnesite efficient flame-retarding agent controlled according to claim 1, is characterized in that carrying out according to following step:
(1) use Banbury mixer to carry out banburying temperature PVC, calcium zinc stabilizer, clorafin and HM by proportioning and be set as 190 DEG C;
(2) pulverize and sieve with pulverizer, the mixture obtained is basic magnesite efficient flame-retarding agent again.
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| CN201510724150.1A CN105348668A (en) | 2015-10-29 | 2015-10-29 | Decomposition control-based hydromagnesite high efficiency fire retardant and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949598A (en) * | 2016-06-26 | 2016-09-21 | 陈旭 | Hydromagnesite/huntite flame-retardant EVA/LLDPE (ethylene-vinyl acetate/linear low-density polyethylene) material |
| CN105949644A (en) * | 2016-05-13 | 2016-09-21 | 江苏艾特克阻燃材料有限公司 | Modifying method of flame retardant and preparation method of flame retardant material |
| CN108727685A (en) * | 2017-04-25 | 2018-11-02 | 武汉金发科技有限公司 | A kind of halogen-free flame retardant polypropylene composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0245545A (en) * | 1988-08-08 | 1990-02-15 | Furukawa Electric Co Ltd:The | Flame-retardant resin composition |
| CN101469100A (en) * | 2008-06-19 | 2009-07-01 | 上海化工研究院 | Halogen-free expansion type flame-retarding composition based on thermoplastic elastomer SEBS and process for the preparation thereof |
| CN101928409A (en) * | 2009-06-25 | 2010-12-29 | 上海化工研究院 | Halogen-free expansion-type flame retardant for polyethylene and preparation method thereof |
-
2015
- 2015-10-29 CN CN201510724150.1A patent/CN105348668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0245545A (en) * | 1988-08-08 | 1990-02-15 | Furukawa Electric Co Ltd:The | Flame-retardant resin composition |
| CN101469100A (en) * | 2008-06-19 | 2009-07-01 | 上海化工研究院 | Halogen-free expansion type flame-retarding composition based on thermoplastic elastomer SEBS and process for the preparation thereof |
| CN101928409A (en) * | 2009-06-25 | 2010-12-29 | 上海化工研究院 | Halogen-free expansion-type flame retardant for polyethylene and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| L.A. HOLLINGBERY, ET AL: "The fire retardant behaviour of huntite and hydromagnesite -A review", 《POLYMER DEGRADATION AND STABILITY》 * |
| 郭如新: "镁质阻燃剂的现状与前景", 《塑料助剂》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949644A (en) * | 2016-05-13 | 2016-09-21 | 江苏艾特克阻燃材料有限公司 | Modifying method of flame retardant and preparation method of flame retardant material |
| CN105949598A (en) * | 2016-06-26 | 2016-09-21 | 陈旭 | Hydromagnesite/huntite flame-retardant EVA/LLDPE (ethylene-vinyl acetate/linear low-density polyethylene) material |
| CN108727685A (en) * | 2017-04-25 | 2018-11-02 | 武汉金发科技有限公司 | A kind of halogen-free flame retardant polypropylene composite material and preparation method thereof |
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Application publication date: 20160224 |