CN101857692A - PE/magnesium hydroxide composite flame retardant material - Google Patents
PE/magnesium hydroxide composite flame retardant material Download PDFInfo
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- CN101857692A CN101857692A CN201010204995.5A CN201010204995A CN101857692A CN 101857692 A CN101857692 A CN 101857692A CN 201010204995 A CN201010204995 A CN 201010204995A CN 101857692 A CN101857692 A CN 101857692A
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- magnesium hydroxide
- flame retardant
- multipolymer
- glycidyl methacrylate
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- 239000000463 material Substances 0.000 title claims abstract description 36
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 title claims abstract description 27
- 239000003063 flame retardant Substances 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910001862 magnesium hydroxide Inorganic materials 0.000 title claims abstract description 21
- 239000000347 magnesium hydroxide Substances 0.000 title claims abstract description 21
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 150000002924 oxiranes Chemical group 0.000 claims abstract description 16
- 239000000178 monomer Substances 0.000 claims abstract description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 14
- 238000010526 radical polymerization reaction Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 32
- 229920001577 copolymer Polymers 0.000 abstract description 13
- 239000005977 Ethylene Substances 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 description 54
- 229920000573 polyethylene Polymers 0.000 description 54
- 238000012986 modification Methods 0.000 description 36
- 230000004048 modification Effects 0.000 description 36
- 239000003795 chemical substances by application Substances 0.000 description 28
- 238000002156 mixing Methods 0.000 description 19
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 18
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 17
- 235000021355 Stearic acid Nutrition 0.000 description 16
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 16
- 239000000843 powder Substances 0.000 description 16
- 239000008117 stearic acid Substances 0.000 description 16
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 16
- -1 Polyethylene Polymers 0.000 description 14
- 239000006057 Non-nutritive feed additive Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 230000004927 fusion Effects 0.000 description 9
- 238000004080 punching Methods 0.000 description 9
- 150000003384 small molecules Chemical class 0.000 description 9
- 239000008188 pellet Substances 0.000 description 8
- 239000006087 Silane Coupling Agent Substances 0.000 description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000003999 initiator Substances 0.000 description 5
- 229920002521 macromolecule Polymers 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000003607 modifier Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
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Abstract
The invention relates to a PE/magnesium hydroxide composite flame retardant material which improves the mechanical property of a composite material while ensuring the flame retardance. The PE/magnesium hydroxide composite flame retardant material is prepared from the following raw materials in percentage by mass: 40-70 percent of modified magnesium hydroxide and 30-60 percent of PE, wherein the modified magnesium hydroxide comprises magnesium hydroxide, a PE copolymer containing an epoxide group, and an assistant, and the masses of the PE copolymer containing an epoxide group and the assistant are respectively 1-20 percent and 0.1-10 percent of that of the magnesium hydroxide. As a prefer scheme, the PE copolymer containing an epoxide group is a monomer and contains a copolymer of glycidyl methacrylate and ethylene, wherein the glycidyl methacrylate occupies 1-20 percent of the total weight of the monomer. The invention can greatly improve the compatibility of MH and a macromolecular matrix and improves the mechanical property of a composite material while ensuring the flame retardance.
Description
Technical field
The present invention relates to a kind of PE/ magnesium hydroxide composite flame retardant material.
Background technology
Polyethylene (PE) is as a kind of important high molecular polymer engineering materials, density is low, water-repellancy is strong, resistance to chemical corrosion is good, easy processing owing to having, and the cost performance advantages of higher is widely used at building, transportation, electrical equipment and other numerous areas.But as the common drawback of general macromolecular material, PE equally also has easy firing, problem such as propagation of flame is fast during burning, and in the higher environment of temperature requirement, its application has been subjected to very big restriction.How effectively environmental protection ground improves its flame retardant properties, undoubtedly the application of further widening the PE material is had meaning.
In recent years, along with the pay attention to day by day of people to ecotope, traditional halogen containing flame-retardant is owing to the corrodibility of self and the toxicity of products of combustion, and its application just more and more is restricted.Replace, halogen-free flame retardants receives increasing the concern and research because of himself having environmental friendliness, advantage such as nontoxic.Wherein magnesium hydroxide (magnesium hydroxide, MH) and aluminium hydroxide (aluminium trihydroxide ATH) is two kinds of comparatively superior bittern-free flame-proof materials of performance.And because the heat decomposition temperature (about 340 ℃) of MH is than ATH height (the ATH heat decomposition temperature is in general processing of high molecular material temperature range), the scope of application is also wide, thereby MH has more wide application prospect.
Yet, with MH as fire retardant, be filled in the macromolecule matrix, preparation polymer composite flame-proof material, the greatest problem that exists is: in order to guarantee the ideal flame retardant effect, generally speaking the loading level of MH should be more than 50%, and MH surface hydrophilic oleophobic, polarity is big, under so big loading level condition, MH is difficult to be distributed in the macromolecule matrix equably, under the prerequisite that has guaranteed flame retardant properties, but sacrificed other performance (as: mechanical property of macromolecular material greatly, optical property and processing characteristics etc.), this makes the practical application of material be greatly limited undoubtedly.And compatibility problem also is the difficult point problem in generally inorganic/organic composite material preparation.
Improve the consistency between MH and macromolecular material, just need to change the surface properties of the natural hydrophilic oleophobic of MH, adopting properties-correcting agent to carry out surface modification is the method for simple possible the most.Just see that at present surface-modifying agent can be divided into small molecules properties-correcting agent and macromole properties-correcting agent, small molecules properties-correcting agent comprises tensio-active agent, silane coupling agent, titanate coupling agent etc.Than macromole properties-correcting agent, the inexpensive and excellent processing performance of small molecules properties-correcting agent can satisfy needs of production preferably, thereby uses very extensive.For MH composite high-molecular system, the researchist has attempted multiple small molecules modifier modification, comprises stearate, oleate, silane coupling agent or the like.Because the strong coupled action between silane coupling agent and the MH surfactivity hydroxyl, result of study shows that silane coupling agent is also very effective for the consistency of improving between MH and macromolecule matrix.
But small molecules properties-correcting agent also exists some problems, as: small molecules properties-correcting agent chain length is shorter, can not closely twine with macromolecular chain, is unfavorable for improving the tensile property of macromolecular material; And, after small molecules properties-correcting agent is used for modification and is prepared into matrix material, consider from thermodynamics, the trend that will break away from inorganic organic polymer microfacies interface is always arranged, attempt to dissociate, and make composite material surface phenomenons such as expansion occur, thereby reduce the use properties of material to material surface; Therefore in order further to improve the consistency of magnesium hydroxide and macromolecule matrix, people are the properties-correcting agent and the modified technique of development of new energetically.
Summary of the invention
The invention provides a kind of PE/ magnesium hydroxide composite flame retardant material, when guaranteeing flame retardant resistance, improve the mechanical property of matrix material.
Described PE/ magnesium hydroxide composite flame retardant material, its raw material is made up of the modified magnesium hydroxide of 40%-70% and the PE of 30%-60%, described per-cent is mass percent, described modified magnesium hydroxide is made up of magnesium hydroxide, the PE multipolymer and the auxiliary agent that contain epoxide group, and the quality that wherein contains the PE multipolymer of epoxide group and auxiliary agent is respectively 1%-20%, the 0.1%-10% of magnesium hydroxide.
As preferred version, the described PE multipolymer that contains epoxide group is the multipolymer that monomer comprises glycidyl methacrylate and ethene, and wherein glycidyl methacrylate accounts for the 1%-20% of total monomer weight.The described PE multipolymer that contains epoxide group is the multipolymer of glycidyl methacrylate and ethene more preferably, or the multipolymer of glycidyl methacrylate, ethene and methyl acrylate, the described PE multipolymer that contains epoxide group can be made by oneself or be purchased, as purchasing the company in Sigma-Aldrich.
The described PE multipolymer that contains epoxide group can or be commercially available through self-control, and preferably its weight-average molecular weight is 500-1000000, more preferably 10000-500000.
Polyethylene-glycidyl methacrylate copolymer and polyethylene-methyl acrylate-glycidyl methacrylate copolymer preparation method is: 100 parts of polyethylene, methyl acrylate 0-15 part, glycidyl methacrylate 1-30 part, dicumyl peroxide 0.05-1 part is as initiator, melting in mixing roll (120-140 ℃) graft copolymerization 5-60min is by gel chromatography product weight-average molecular weight.
Described auxiliary agent can comprise processing aid and synergist, and its kind and consumption are the common practise of this area, can be selected according to concrete material and actual the requirement by those skilled in the art.
Described PE/ magnesium hydroxide composite flame retardant material adopts conventional method preparation, and preferred step is as follows:
Step 1: with MH powder, the PE multipolymer macromole properties-correcting agent that contains epoxide group and auxiliary agent (comprising processing aid and synergist), added the homogenizer whip modified 5-60 minute, obtain modification MH.
Step 2: using the open type dual-roller mixing roll to prepare the PE/MH matrix material under the 120-130 ℃ of left and right sides condition: after the PE particle being heated to softening fusion on the roller, added above-mentioned modification MH powder mixing 5-60 minute, take out cooling at last.Press the punching of ASTMD1078-06 standard, test.
In the composite flame-proof material of the present invention, because the consistency as the PE multipolymer that contains epoxide group of properties-correcting agent and PE is good, simultaneously, interact between the hydroxyl on functional group on the properties-correcting agent and MH surface, most MH are by polymer institute sealed envelope, thereby improve the consistency between MH and macromolecule matrix greatly, when guaranteeing flame retardant resistance, improved the mechanical property of matrix material.
Description of drawings
Fig. 1 is the sem photograph of reference examples 1 obtained flame-retardant matrix material;
Fig. 2 is the sem photograph of reference examples 2 obtained flame-retardant matrix materials;
Fig. 3 is the sem photograph of embodiment 1 obtained flame-retardant matrix material.
Embodiment
Further specify the present invention by the following examples.
Reference examples 1
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company) and auxiliary agent (processing aid stearic acid and synergist zinc borate) add homogenizer and stirred 20 minutes, wherein stearic acid and zinc borate weight are respectively 1% and 5% of MH, obtain the MH miscellany.Under 125 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned MH mixture mixing 10 minutes, the weight percentage of above-mentioned MH mixture in matrix material is 65%, takes out cooling.Press the punching of ASTM D1078-06 standard, obtain composite flame-proof material M0.
Reference examples 2
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), the trade mark is that the silane coupling agent of KH-560 and auxiliary agent (processing aid stearic acid and synergist zinc borate) add homogenizer and stirred 20 minutes, wherein the weight of KH-560, stearic acid and zinc borate is respectively 5%, 1% and 5% of MH, obtains modification MH.Under 125 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 10 minutes, the weight percentage of above-mentioned modification MH in matrix material is 65%, takes out cooling.Press the punching of ASTM D1078-06 standard, obtain composite flame-proof material M1.
Embodiment 1
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), polyethylene-glycidyl methacrylate copolymer macromole properties-correcting agent (glycidyl methacrylate weight percent in multipolymer wherein: 8%; Proterties is: pressed powder; Purchase company in Sigma-Aldrich, goods number: 430862, weight-average molecular weight 300000) and auxiliary agent (processing aid stearic acid and synergist zinc borate) added the homogenizer whip modified 20 minutes, wherein macromole properties-correcting agent weight, stearic acid and zinc borate weight are respectively 15%, 1% and 5% of MH, obtain modification MH.Under 125 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 10 minutes, the weight percentage of above-mentioned modification MH in matrix material is 65%, takes out cooling.Press the punching of ASTM D1078-06 standard, obtain composite flame-proof material M2.
Table 1 has compared pure PE (DFDA-7042 type, density 0.92g/cm
3The Nanjing Sinopec is raised sub-petrochemical industry company limited), under identical MH loading level condition, unmodified PE/MH matrix material, and be respectively the mechanical property and the flame retardant properties comparison of the PE/MH matrix material of KH-560 silane coupling agent and polyethylene-glycidyl methacrylate copolymer macromole modifier modification through the trade mark.See from table 1, obviously be better than unmodified material through the composite materials property of modification, and the composite materials property that is better than small molecules properties-correcting agent (KH-560) again of macromole modifier modification, and flame retardant properties changes little.In addition, under scanning electron microscope, observe the composite material surface pattern, as Figure 1-3, from than MH for modification MH and small molecules KH-560 modification, use the matrix material of macromole modifier modification, it is very substantial, smooth that material surface seems, almost can't see the interface between MH and the polymer, because the interaction on the properties-correcting agent between the hydroxyl on functional group and MH surface, most MH are by polymer institute sealed envelope.
The mechanical property of the different PE samples of table 1 and flame retardant properties are relatively
Embodiment 2
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), (wherein methyl acrylate and glycidyl methacrylate weight percent in multipolymer is respectively polyethylene-methyl acrylate-glycidyl methacrylate copolymer macromole properties-correcting agent: 15% and 1%; Proterties is: pressed powder; Purchase in Sigma-Aldrich company, goods number: 433640, weight-average molecular weight 400000) and auxiliary agent (processing aid stearic acid and synergist zinc borate) added the homogenizer whip modified 5 minutes, wherein macromole properties-correcting agent weight, stearic acid and zinc borate weight are respectively 1%, 0.05% and 0.05% of MH, obtain modification MH.Under 120 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 5 minutes, the weight percentage of above-mentioned modification MH in matrix material is 40%, takes out cooling.Press the punching of ASTM D1078-06 standard.Tensile strength of material is after tested: 15.12MPa; Elongation at break is: 24.45%; Oxygen index is: 28%.
Embodiment 3
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), polyethylene-glycidyl methacrylate copolymer macromole properties-correcting agent (glycidyl methacrylate weight percent in multipolymer wherein: 20%; Proterties is: pressed powder; Provide for oneself by the macromole modification and to obtain that (polyethylene is under 125 ℃ of melting states, add initiator dicumyl peroxide (account for polyethylene quality 0.5%), add again the glycidyl methacrylate monomer (with the polyethylene mass ratio: 20: 80), reacted 1 hour, weight-average molecular weight 100000) and auxiliary agent (processing aid stearic acid and synergist zinc borate) added the homogenizer whip modified 60 minutes, wherein macromole properties-correcting agent weight, stearic acid and zinc borate weight are respectively 20%, 2% and 8% of MH, obtain modification MH.Under 130 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 60 minutes, the weight percentage of above-mentioned modification MH in matrix material is 70%, takes out cooling.Press the punching of ASTM D1078-06 standard.Tensile strength of material is after tested: 15.42MPa; Elongation at break is: 26.42%; Oxygen index is: 29%.
Embodiment 4
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), (wherein methyl acrylate and glycidyl methacrylate weight percent in multipolymer is respectively polyethylene-methyl acrylate-glycidyl methacrylate copolymer macromole properties-correcting agent: 10% and 15%; Proterties is: pressed powder; Provide for oneself by the macromole modification and to obtain that (polyethylene is under 125 ℃ of melting states, add initiator dicumyl peroxide (account for polyethylene quality 0.05%), add methyl acrylate and glycidyl methacrylate monomer (methyl acrylate: glycidyl methacrylate: polyethylene=10: 15: 75 again, mass ratio), reacted 30 minutes, weight-average molecular weight 500) and auxiliary agent (processing aid stearic acid and synergist zinc borate) added the homogenizer whip modified 20 minutes, macromole properties-correcting agent weight wherein, stearic acid and zinc borate weight are respectively 10% of MH, 0.5% and 2.5%, obtain modification MH.Under 123 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 20 minutes, the weight percentage of above-mentioned modification MH in matrix material is 50%, takes out cooling.Press the punching of ASTM D1078-06 standard.Tensile strength of material is after tested: 15.92MPa; Elongation at break is: 28.17%; Oxygen index is: 29%.
Embodiment 5
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), polyethylene-glycidyl methacrylate copolymer macromole properties-correcting agent (glycidyl methacrylate weight percent in multipolymer wherein: 4%; Proterties is: pressed powder; Provide for oneself by the macromole modification and to obtain that (polyethylene is under 125 ℃ of melting states, add initiator dicumyl peroxide (account for polyethylene quality 1.0%), add again the glycidyl methacrylate monomer (with the polyethylene mass ratio: 4: 96), reacted 1 hour, weight-average molecular weight 500000) and auxiliary agent (processing aid stearic acid and synergist zinc borate) added the homogenizer whip modified 40 minutes, wherein macromole properties-correcting agent weight, stearic acid and zinc borate weight are respectively 17%, 2% and 6% of MH, obtain modification MH.Under 127 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 40 minutes, the weight percentage of above-mentioned modification MH in matrix material is 60%, takes out cooling.Press the punching of ASTM D1078-06 standard.Tensile strength of material is after tested: 16.23MPa; Elongation at break is: 27.17%; Oxygen index is: 28%.
Embodiment 6
With MH powder (BET specific surface 6.79m
2/ g, Yixing venture company), (wherein methyl acrylate and glycidyl methacrylate weight percent in multipolymer is respectively polyethylene-methyl acrylate-glycidyl methacrylate copolymer macromole properties-correcting agent: 5% and 12%; Proterties is: pressed powder; Provide for oneself by the macromole modification and to obtain that (polyethylene is under 125 ℃ of melting states, add initiator dicumyl peroxide (account for polyethylene quality 0.5%), add methyl acrylate and glycidyl methacrylate monomer (methyl acrylate: glycidyl methacrylate: polyethylene=5: 12: 83 again, mass ratio), reacted 30 minutes, weight-average molecular weight 1000000) and auxiliary agent (processing aid stearic acid and synergist zinc borate) added the homogenizer whip modified 30 minutes, macromole properties-correcting agent weight wherein, stearic acid and zinc borate weight are respectively 12% of MH, 1% and 4%, obtain modification MH.Under 120 ℃ of left and right sides conditions, use the open type dual-roller mixing roll to prepare the PE/MH matrix material then: with PE pellet (DFDA-7042 type, density 0.92g/cm
3, the Nanjing Sinopec is raised sub-petrochemical industry company limited) and after being heated to softening fusion on the roller, added above-mentioned modification MH mixing 30 minutes, the weight percentage of above-mentioned modification MH in matrix material is 50%, takes out cooling.Press the punching of ASTM D1078-06 standard.Tensile strength of material is after tested: 15.82MPa; Elongation at break is: 29.35%; Oxygen index is: 29%.
Claims (4)
1. PE/ magnesium hydroxide composite flame retardant material, it is characterized in that its raw material is made up of the modified magnesium hydroxide of 40%-70% and the PE of 30%-60%, described per-cent is mass percent, described modified magnesium hydroxide is made up of magnesium hydroxide, the PE multipolymer and the auxiliary agent that contain epoxide group, and the quality that wherein contains the PE multipolymer of epoxide group and auxiliary agent is respectively 1%-20%, the 0.1%-10% of magnesium hydroxide.
2. PE/ magnesium hydroxide composite flame retardant material as claimed in claim 1, it is characterized in that the described PE multipolymer that contains epoxide group is the multipolymer that monomer comprises glycidyl methacrylate and ethene, wherein glycidyl methacrylate accounts for the 1%-20% of total monomer weight.
3. PE/ magnesium hydroxide composite flame retardant material as claimed in claim 1 or 2 is characterized in that the described PE multipolymer that contains epoxide group makes through radical polymerization.
4. PE/ magnesium hydroxide composite flame retardant material as claimed in claim 3 is characterized in that the described PE multipolymer weight-average molecular weight that contains epoxide group is 500-1000000.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010536A (en) * | 2010-12-16 | 2011-04-13 | 上海交通大学 | Low-smoke halogen-free flame retardant polyolefin composite material and preparation method thereof |
| CN102219929A (en) * | 2011-04-20 | 2011-10-19 | 南京大学 | Modified magnesium hydroxide fire retardant and high impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardant and manufacturing method |
| CN111484724A (en) * | 2020-02-11 | 2020-08-04 | 常德艾利特新材料科技有限公司 | Polyurethane composite material and preparation method thereof |
| CN112341841A (en) * | 2020-10-15 | 2021-02-09 | 四川轻化工大学 | Preparation method and application of long-acting natural multifunctional additive |
| JP2021531390A (en) * | 2018-12-21 | 2021-11-18 | エルジー・ケム・リミテッド | Polyolefin |
| US11542351B2 (en) | 2018-12-21 | 2023-01-03 | Lg Chem, Ltd. | Polyolefin |
Citations (3)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010536A (en) * | 2010-12-16 | 2011-04-13 | 上海交通大学 | Low-smoke halogen-free flame retardant polyolefin composite material and preparation method thereof |
| CN102219929A (en) * | 2011-04-20 | 2011-10-19 | 南京大学 | Modified magnesium hydroxide fire retardant and high impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardant and manufacturing method |
| CN102219929B (en) * | 2011-04-20 | 2012-09-26 | 南京大学 | Modified magnesium hydroxide fire retardant and high impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardant and manufacturing method |
| JP2021531390A (en) * | 2018-12-21 | 2021-11-18 | エルジー・ケム・リミテッド | Polyolefin |
| US11542351B2 (en) | 2018-12-21 | 2023-01-03 | Lg Chem, Ltd. | Polyolefin |
| JP7276967B2 (en) | 2018-12-21 | 2023-05-18 | エルジー・ケム・リミテッド | Polyolefin |
| CN111484724A (en) * | 2020-02-11 | 2020-08-04 | 常德艾利特新材料科技有限公司 | Polyurethane composite material and preparation method thereof |
| CN112341841A (en) * | 2020-10-15 | 2021-02-09 | 四川轻化工大学 | Preparation method and application of long-acting natural multifunctional additive |
| WO2022078365A1 (en) * | 2020-10-15 | 2022-04-21 | 四川轻化工大学 | Preparation method for long-acting natural multifunctional additive and application of same |
| GB2620482A (en) * | 2020-10-15 | 2024-01-10 | Sichuan Zhixiangyi Tech Co Ltd | Preparation method and application of long-acting natural multifunctional additive |
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| CN101857692B (en) | 2012-05-02 |
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