CN109776925A - A kind of high intensity polyethylene foamed - Google Patents
A kind of high intensity polyethylene foamed Download PDFInfo
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- CN109776925A CN109776925A CN201910130869.0A CN201910130869A CN109776925A CN 109776925 A CN109776925 A CN 109776925A CN 201910130869 A CN201910130869 A CN 201910130869A CN 109776925 A CN109776925 A CN 109776925A
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- polyethylene
- polyethylene foamed
- calcium carbonate
- foamed
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- -1 polyethylene Polymers 0.000 title claims abstract description 56
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 55
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 55
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 36
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 33
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 27
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 27
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003063 flame retardant Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000007822 coupling agent Substances 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 15
- 239000000806 elastomer Substances 0.000 claims abstract description 15
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 15
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 13
- 239000004088 foaming agent Substances 0.000 claims abstract description 13
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 13
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 13
- YKTNISGZEGZHIS-UHFFFAOYSA-N 2-$l^{1}-oxidanyloxy-2-methylpropane Chemical group CC(C)(C)O[O] YKTNISGZEGZHIS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 12
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000008116 calcium stearate Substances 0.000 claims abstract description 11
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 12
- 238000005187 foaming Methods 0.000 claims description 10
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 10
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004970 Chain extender Substances 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000005007 epoxy-phenolic resin Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 4
- 239000005056 polyisocyanate Substances 0.000 claims description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 150000005846 sugar alcohols Polymers 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 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 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 238000007373 indentation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of high-intensitive polyethylene foameds, raw material including following parts by weight: 20~30 parts of low density polyethylene (LDPE) (LDPE), 20~30 parts of linear low density polyethylene (LLDPE), 5~20 parts of elastomer, 15~25 parts of modified calcium carbonate, 10~20 parts of sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 10~20 parts of titanate coupling agent, 2, 5- dimethyl -2, 5~15 parts of hexane crosslinking agent of 5- bis- (tert-butyl peroxy base), 10~15 parts of fire retardant, 10~20 parts of calcium stearate heat stabilizer, 20~30 parts of FRP composite material, FRP composite material and modified calcium carbonate are added in the feed, improve the intensity of polyethylene foamed, fire retardant and calcium stearate heat stabilizer is added in the feed simultaneously, improve its flame retardant property with And thermal stability, polyethylene foamed is irradiated using gamma-rays in preparation method, improves its heat resistance and mechanical strength, while hardness can also be improved.
Description
Technical field
The present invention relates to polyethylene foamed technical field more particularly to a kind of high-intensitive polyethylene foameds.
Background technique
Polyethylene foamed material surface is smooth, and impact absorbency is excellent, and bumper and absorbing shock and resilience are excellent, tensile strength
Height has excellent chemical stability, good resistance to environmental aging and weatherability, insulation, heat-insulated and cheap, is mesh
The most foamed material of preceding application.But polyethylene foam-material is there are still anti-flammability and poor heat resistance at present, hardness is low to be waited not
Foot, limits its application.
Therefore, we have proposed a kind of high-intensitive polyethylene foameds for solving the above problems.
Summary of the invention
The purpose of the present invention is to solve anti-flammability existing in the prior art and poor heat resistance and intensity it is low lack
Point, and a kind of high-intensitive polyethylene foamed proposed.
A kind of high intensity polyethylene foamed, the raw material including following parts by weight: 20~30 parts of low density polyethylene (LDPE) (LDPE),
20~30 parts of linear low density polyethylene (LLDPE), 5~20 parts of elastomer, 15~25 parts of modified calcium carbonate, fatty alcohol polyoxy second
10~20 parts of alkene ether sodium sulfate foaming agent, 10~20 parts of titanate coupling agent, 2,5- dimethyl -2,5- two (tert-butyl peroxy base) oneself
5~15 parts of alkane crosslinking agent, 10~15 parts of fire retardant, 10~20 parts of calcium stearate heat stabilizer, 20~30 parts of FRP composite material；
A kind of preparation method of the high-intensitive polyethylene foamed the following steps are included:
S1, modified calcium carbonate is pulverized and is dried to moisture content≤0.1%；
S2, the modified calcium carbonate powder after drying is adequately mixed with titanate coupling agent 100:3 in mass ratio, must be coupled
Agent modified calcium carbonate；
S3, LDPE, LLDPE and elastomer are placed in open mill and plasticated, 110~120 DEG C of plasticating temperature, plasticated the time 2
~5 minutes；
S4, by coupling agent modified calcium carbonate obtained in S2, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 2,5- dimethyl-
2,5- bis- (tert-butyl peroxy base) hexane crosslinking agent, fire retardant, calcium stearate heat stabilizer and FRP composite material are sequentially added into S3
In be kneaded；
S5, the material after mixing is put in a mold, mold is placed in vulcanizing press, foamed 3~10 minutes, be cooled to room
Foamed second time of foaming 5~10 minutes after demoulding can be prepared by polyethylene foamed by temperature demoulding, recycle gamma-rays irradiation 5
~10 minutes, high intensity polyethylene foamed is made.
Preferably, the elastomer is long-chain polyhydric alcohol --- the polyethers for being 600~4000 by average molecular mass
Or polyester, relative molecular mass form for 61~400 chain extender and polyisocyanate polyaddition, and long-chain polyhydric alcohol,
The polymerization ratio of chain extender and polyisocyanates is 1:1:2.
Preferably, the fire retardant be urea, dicyandiamide and phosphate composition mixture, wherein urea, dicyandiamide with
Phosphate proportion in fire retardant is 1:1:1.
Preferably, the FRP composite material is mainly made of reinforcing fiber and matrix, and reinforcing fiber is by carbon fiber and glass
Glass fiber mixes, and the mixed proportion of carbon fiber and glass fibre is 1:1, and matrix is by epoxy resin and phenolic resin
It mixes, and the mixed proportion of epoxy resin and phenolic resin is 1:1.
Preferably, 120~130 DEG C of melting temperature, mixing time 10~15 minutes in the S4.
Preferably, foaming condition is 145~165 DEG C, 5~15MPa in the S5, and the temperature of second time of foaming is 170~180
℃。
The beneficial effects of the present invention are:
1, FRP composite material and modified calcium carbonate is added in the present invention in the feed, improves the intensity of polyethylene foamed, while
Fire retardant and calcium stearate heat stabilizer are added in raw material, improves its flame retardant property and thermal stability.
2, the present invention irradiates polyethylene foamed using gamma-rays in preparation method, its interior molecules is made to generate bridging structure
(point of contact is formed between molecule and molecule) improves its heat resistance and mechanical strength, while can also improve hardness.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
(FRP composite material is not added, also irradiate without gamma-rays) in embodiment one:
A kind of high intensity polyethylene foamed, the raw material including following parts by weight: 15 parts of low density polyethylene (LDPE) (LDPE), linear low close
Spend 15 parts of polyethylene (LLDPE), 10 parts of elastomer, 20 parts of modified calcium carbonate, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent 15
It is part, 15 parts of titanate coupling agent, 10 parts of 2,5- dimethyl -2,5- two (tert-butyl peroxy base) hexane crosslinking agent, 13 parts of fire retardant, hard
15 parts of resin acid calcium heat stabilizer；
It is a kind of high intensity polyethylene foamed preparation method the following steps are included:
S1, modified calcium carbonate is pulverized and is dried to moisture content≤0.1%；
S2, the modified calcium carbonate powder after drying is adequately mixed with titanate coupling agent 100:3 in mass ratio, must be coupled
Agent modified calcium carbonate；
S3, LDPE, LLDPE and elastomer are placed in open mill and plasticated, 115 DEG C of plasticating temperature, plasticated the time 5 minutes；
S4, by coupling agent modified calcium carbonate obtained in S2, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 2,5- dimethyl-
2,5- bis- (tert-butyl peroxy base) hexane crosslinking agent, fire retardant, calcium stearate heat stabilizer and FRP composite material are sequentially added into S3
In be kneaded, 125 DEG C of melting temperature, mixing time 15 minutes；
S5, the material after mixing is put in a mold, mold is placed in vulcanizing press, 155 DEG C, foam 6 under the conditions of 10MPa
Minute, it is cooled to room temperature demoulding, foamed second time of foaming 10 minutes after demoulding be can be prepared by into polyethylene foamed.
Then just test force is applied to polyethylene foamed with defined steel pressure head, then applies master trip power again, calculates
The depth difference h of the push-down head indentation of test force effect twice is recycled and is calculated the hardness number HR(of polyethylene foamed wherein k is normal
Number, and be constant with k=130 when steel pressure head, c, it is approximately equal to 0.002mm).
Embodiment two (adds FRP composite material, but irradiates without gamma-rays):
A kind of high intensity polyethylene foamed, the raw material including following parts by weight: 15 parts of low density polyethylene (LDPE) (LDPE), linear low close
Spend 15 parts of polyethylene (LLDPE), 10 parts of elastomer, 20 parts of modified calcium carbonate, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent 15
It is part, 15 parts of titanate coupling agent, 10 parts of 2,5- dimethyl -2,5- two (tert-butyl peroxy base) hexane crosslinking agent, 13 parts of fire retardant, hard
15 parts of resin acid calcium heat stabilizer, 25 parts of FRP composite material；
It is a kind of high intensity polyethylene foamed preparation method the following steps are included:
S1, modified calcium carbonate is pulverized and is dried to moisture content≤0.1%；
S2, the modified calcium carbonate powder after drying is adequately mixed with titanate coupling agent 100:3 in mass ratio, must be coupled
Agent modified calcium carbonate；
S3, LDPE, LLDPE and elastomer are placed in open mill and plasticated, 115 DEG C of plasticating temperature, plasticated the time 5 minutes；
S4, by coupling agent modified calcium carbonate obtained in S2, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 2,5- dimethyl-
2,5- bis- (tert-butyl peroxy base) hexane crosslinking agent, fire retardant, calcium stearate heat stabilizer and FRP composite material are sequentially added into S3
In be kneaded, 125 DEG C of melting temperature, mixing time 15 minutes；
S5, the material after mixing is put in a mold, mold is placed in vulcanizing press, 155 DEG C, foam 6 under the conditions of 10MPa
Minute, it is cooled to room temperature demoulding, foamed second time of foaming 10 minutes after demoulding be can be prepared by into polyethylene foamed.
Then just test force is applied to polyethylene foamed with defined steel pressure head, then applies master trip power again, calculates
The depth difference h of the push-down head indentation of test force effect twice is recycled and is calculated the hardness number HR(of polyethylene foamed wherein k is normal
Number, and be constant with k=130 when steel pressure head, c, it is approximately equal to 0.002mm).
Embodiment three (is not added FRP composite material, but carries out gamma-rays irradiation):
A kind of high intensity polyethylene foamed, the raw material including following parts by weight: 15 parts of low density polyethylene (LDPE) (LDPE), linear low close
Spend 15 parts of polyethylene (LLDPE), 10 parts of elastomer, 20 parts of modified calcium carbonate, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent 15
It is part, 15 parts of titanate coupling agent, 10 parts of 2,5- dimethyl -2,5- two (tert-butyl peroxy base) hexane crosslinking agent, 13 parts of fire retardant, hard
15 parts of resin acid calcium heat stabilizer；
It is a kind of high intensity polyethylene foamed preparation method the following steps are included:
S1, modified calcium carbonate is pulverized and is dried to moisture content≤0.1%；
S2, the modified calcium carbonate powder after drying is adequately mixed with titanate coupling agent 100:3 in mass ratio, must be coupled
Agent modified calcium carbonate；
S3, LDPE, LLDPE and elastomer are placed in open mill and plasticated, 115 DEG C of plasticating temperature, plasticated the time 5 minutes；
S4, by coupling agent modified calcium carbonate obtained in S2, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 2,5- dimethyl-
2,5- bis- (tert-butyl peroxy base) hexane crosslinking agent, fire retardant, calcium stearate heat stabilizer and FRP composite material are sequentially added into S3
In be kneaded, 125 DEG C of melting temperature, mixing time 15 minutes；
S5, the material after mixing is put in a mold, mold is placed in vulcanizing press, 155 DEG C, foam 6 under the conditions of 10MPa
Minute, it is cooled to room temperature demoulding, by foamed second time of foaming 10 minutes after demoulding, gamma-rays is recycled to irradiate 5~10 minutes
It can be prepared by polyethylene foamed.
Then just test force is applied to polyethylene foamed with defined steel pressure head, then applies master trip power again, calculates
The depth difference h of the push-down head indentation of test force effect twice is recycled and is calculated the hardness number HR(of polyethylene foamed wherein k is normal
Number, and be constant with k=130 when steel pressure head, c, it is approximately equal to 0.002mm).
Example IV (adds FRP composite material, also carry out gamma-rays irradiation):
A kind of high intensity polyethylene foamed, the raw material including following parts by weight: 15 parts of low density polyethylene (LDPE) (LDPE), linear low close
Spend 15 parts of polyethylene (LLDPE), 10 parts of elastomer, 20 parts of modified calcium carbonate, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent 15
It is part, 15 parts of titanate coupling agent, 10 parts of 2,5- dimethyl -2,5- two (tert-butyl peroxy base) hexane crosslinking agent, 13 parts of fire retardant, hard
15 parts of resin acid calcium heat stabilizer, 25 parts of FRP composite material；
It is a kind of high intensity polyethylene foamed preparation method the following steps are included:
S1, modified calcium carbonate is pulverized and is dried to moisture content≤0.1%；
S2, the modified calcium carbonate powder after drying is adequately mixed with titanate coupling agent 100:3 in mass ratio, must be coupled
Agent modified calcium carbonate；
S3, LDPE, LLDPE and elastomer are placed in open mill and plasticated, 115 DEG C of plasticating temperature, plasticated the time 5 minutes；
S4, by coupling agent modified calcium carbonate obtained in S2, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 2,5- dimethyl-
2,5- bis- (tert-butyl peroxy base) hexane crosslinking agent, fire retardant, calcium stearate heat stabilizer and FRP composite material are sequentially added into S3
In be kneaded, 125 DEG C of melting temperature, mixing time 15 minutes；
S5, the material after mixing is put in a mold, mold is placed in vulcanizing press, 155 DEG C, foam 6 under the conditions of 10MPa
Minute, it is cooled to room temperature demoulding, by foamed second time of foaming 10 minutes after demoulding, gamma-rays is recycled to irradiate 5~10 minutes
It can be prepared by polyethylene foamed.
Then just test force is applied to polyethylene foamed with defined steel pressure head, then applies master trip power again, calculates
The depth difference h of the push-down head indentation of test force effect twice is recycled and is calculated the hardness number HR(of polyethylene foamed wherein k is normal
Number, and be constant with k=130 when steel pressure head, c, it is approximately equal to 0.002mm).
By one~example IV of embodiment it is found that h is smaller in the hardness number of polyethylene foamed, then the hardness of polyethylene foamed
Higher (i.e. the intensity of polyethylene foamed is bigger), concrete condition is as shown in the table:
| Embodiment one | Embodiment two | Embodiment three | Example IV | |
| Hardness | It is low | It is slightly higher | It is slightly higher | It is very high |
| Intensity | It is small | It is bigger | It is bigger | It is very big |
As seen from the above table, FRP composite material is added in the raw material of polyethylene foamed and is shone during the preparation process using emission lines
Penetrating can be such that the intensity of polyethylene foamed increases, and can also be increased considerably using its intensity simultaneously.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of high intensity polyethylene foamed, which is characterized in that the raw material including following parts by weight: low density polyethylene (LDPE) (LDPE)
20~30 parts, 20~30 parts of linear low density polyethylene (LLDPE), 5~20 parts of elastomer, 15~25 parts of modified calcium carbonate, rouge
10~20 parts of fat alcohol polyethenoxy ether sodium sulfate foaming agent, 10~20 parts of titanate coupling agent, two (uncle of 2,5- dimethyl -2,5-
Butyl peroxy base) 5~15 parts of hexane crosslinking agent, 10~15 parts of fire retardant, 10~20 parts of calcium stearate heat stabilizer, FRP composite wood
20~30 parts of material；
A kind of preparation method of the high-intensitive polyethylene foamed the following steps are included:
S1, modified calcium carbonate is pulverized and is dried to moisture content≤0.1%；
S2, the modified calcium carbonate powder after drying is adequately mixed with titanate coupling agent 100:3 in mass ratio, must be coupled
Agent modified calcium carbonate；
S3, LDPE, LLDPE and elastomer are placed in open mill and plasticated, 110~120 DEG C of plasticating temperature, plasticated the time 2
~5 minutes；
S4, by coupling agent modified calcium carbonate obtained in S2, sodium sulfate of polyethenoxy ether of fatty alcohol foaming agent, 2,5- dimethyl-
2,5- bis- (tert-butyl peroxy base) hexane crosslinking agent, fire retardant, calcium stearate heat stabilizer and FRP composite material are sequentially added into S3
In be kneaded；
S5, the material after mixing is put in a mold, mold is placed in vulcanizing press, foamed 3~10 minutes, be cooled to room
Foamed second time of foaming 5~10 minutes after demoulding can be prepared by polyethylene foamed by temperature demoulding, recycle gamma-rays irradiation 5
~10 minutes, high intensity polyethylene foamed is made.
2. a kind of high-intensitive polyethylene foamed according to claim 1, which is characterized in that the elastomer is by average phase
The long-chain polyhydric alcohol for being 600~4000 to molecular mass --- polyethers or polyester, the chain extender that relative molecular mass is 61~400
It is formed with polyisocyanate polyaddition, and the polymerization ratio of long-chain polyhydric alcohol, chain extender and polyisocyanates is 1:1:2.
3. a kind of high-intensitive polyethylene foamed according to claim 1, which is characterized in that the fire retardant is urea, double
The mixture of cyanamide and phosphate composition, wherein urea, dicyandiamide and the phosphate proportion in fire retardant are 1:1:1.
4. a kind of high-intensitive polyethylene foamed according to claim 1, which is characterized in that the FRP composite material is main
It is made of reinforcing fiber and matrix, reinforcing fiber is mixed by carbon fiber and glass fibre, and carbon fiber and glass fibers
The mixed proportion of dimension is 1:1, and matrix is mixed by epoxy resin and phenolic resin, and epoxy resin and phenolic resin
Mixed proportion is 1:1.
5. a kind of high-intensitive polyethylene foamed according to claim 1, which is characterized in that melting temperature 120 in the S4
~130 DEG C, mixing time 10~15 minutes.
6. a kind of high-intensitive polyethylene foamed according to claim 1, which is characterized in that foaming condition is in the S5
145~165 DEG C, 5~15MPa, the temperature of second time of foaming is 170~180 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130869.0A CN109776925A (en) | 2019-02-22 | 2019-02-22 | A kind of high intensity polyethylene foamed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130869.0A CN109776925A (en) | 2019-02-22 | 2019-02-22 | A kind of high intensity polyethylene foamed |
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| Publication Number | Publication Date |
|---|---|
| CN109776925A true CN109776925A (en) | 2019-05-21 |
Family
ID=66485898
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910130869.0A Withdrawn CN109776925A (en) | 2019-02-22 | 2019-02-22 | A kind of high intensity polyethylene foamed |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110272524A (en) * | 2019-06-18 | 2019-09-24 | 郭俊伶 | A kind of composite foam material and its preparation process |
| CN114058105A (en) * | 2021-12-20 | 2022-02-18 | 东莞市通元高分子材料科技有限公司 | Polyethylene foam material and preparation method thereof |
-
2019
- 2019-02-22 CN CN201910130869.0A patent/CN109776925A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110272524A (en) * | 2019-06-18 | 2019-09-24 | 郭俊伶 | A kind of composite foam material and its preparation process |
| CN114058105A (en) * | 2021-12-20 | 2022-02-18 | 东莞市通元高分子材料科技有限公司 | Polyethylene foam material and preparation method thereof |
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