CN101724196A - Method for preparing hollow glass microsphere compound pipeline with insulating and toughening functions - Google Patents
Method for preparing hollow glass microsphere compound pipeline with insulating and toughening functions Download PDFInfo
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- CN101724196A CN101724196A CN200810201267A CN200810201267A CN101724196A CN 101724196 A CN101724196 A CN 101724196A CN 200810201267 A CN200810201267 A CN 200810201267A CN 200810201267 A CN200810201267 A CN 200810201267A CN 101724196 A CN101724196 A CN 101724196A
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Abstract
The invention provides a method for preparing a hollow glass microsphere compound pipeline with insulating and toughening functions, which comprises the following steps that: a silane coupling agent is covered on the surfaces of micron-sized hollow glass microspheres; then micron-sized hollow glass microspheres are mixed with PP or PE materials; a double-screw extruder is used for extruding granulation; and the micron-sized hollow glass microspheres are homogeneously dispersed in a polymer to form a stabilized functional micron particle, namely polymer composite structures. Due to the advantages of light specific weight, low heat conductivity coefficient, capability of absorbing the impact energy and the like, the micron-sized hollow glass microspheres, filled in the materials using PP/PE as the substrate, can realize heat preservation, toughening and cost reduction. Therefore, the pipeline is named an insulating pipeline, namely BWPP, BWPE.
Description
Technical field:
The invention belongs to that inorganic materials strengthens, toughness reinforcing, the new material technology field that reduces the organic materials thermal conductivity.Specially refer to the micron order hollow glass micropearl through the surface coat handle after with PP or PE material mixing, use the twin screw extruder extruding pelletization, the micron order hollow glass micropearl is dispersed in the polymkeric substance, forms stable functional type micron particle-high molecular polymer composite structure.
Technical background:
Polymer P P, PE are as structured material, and intensity, toughness and thermal conductivity are three important mechanical performance indexs.Can increase rigidity, the intensity of material owing to fill rigid particles than filled rubber particle in toughness reinforcing, the part material can also reduce thermal conductivity.Therefore, from the eighties in last century, the inorganic rigid particle toughening polymer becomes one of focus of macromolecular material research.Hollow glass micropearl (Hollow glass beads is called for short HGB) is compared with other mineral fillers, has that light weight, thermal conductivity are low, high-low temperature resistant, electrical insulating property and thermostability, an advantage such as corrosion-resistant, is used widely in plastics industry.The technology of the present invention mainly is to handle by the effective coating to the HGB surface, selects suitable particle diameter, part by weight and method of modifying, to improve the dispersing uniformity of HGB in PP or PE, realizes the enhancing to polymer materials, toughness reinforcing and reduction thermal conductivity then.
Studies show that the shock strength of matrix material at first increases with the increase of HGB content, after the HGB consumption surpassed the consumption certain value, shock strength reduced along with the increase of HGB content again.The particle diameter of HGB is more little, and toughening effect is obvious more, but thermal conductivity reduction effect is little.The existence of coupling agent can obviously improve the dispersion of HGB in matrix, so reach preferably strengthen, toughness reinforcing effect.For the PP/HGB matrix material, require the little 2KJ/m of minimum shock strength of body material
2For the PE/HGB matrix material, require the minimum shock strength 5.2KJ/m of body material
2
Summary of the invention:
The objective of the invention is: utilize the shown specific physical of coming out of micron order hollow glass micropearl material, realize PP/PE piping insulation, toughness reinforcing.
The objective of the invention is to realize by method once:
Described micron order hollow glass micropearl after adopting silane coupling agent spraying coating and PP or PE mixing with powerful dispersing and mixing machine, through the twin screw extruder extruding pelletization, has obtained PP (PE)/HGB matrix material.With the three-layer composite pipe road that two forcing machines are produced under the composite co-extruding mould, wherein PP (PE)/HGB material is in the middle layer.
Aforementioned micron order hollow glass micropearl surface coats uses silane coupling agent.Described micron order hollow glass micropearl refers to that hollow float bead claims hollow glass ball again, has small, hollow, high temperature resistant and characteristic such as electrical insulation capability is good, is a kind of novel, multi-functional inorganic materials.Its chemical ingredients: SiO
252.1%, Al
2O
325.21%, Fe
2O
34.95%, CaO 1.86%, and MgO 1.17%.Particle diameter: 2~200 microns, wall thickness: be 5~30% of diameter, proportion: 0.5~0.7, unit weight: 310~340 kilograms/meter
3, fusing point: 1300~1600 ℃.
PP of the present invention is a kind of among PP-H, PP-B, PP-R, the PP-RCT.
PE of the present invention is a kind of among HD-PE, LLD-PE, MD-PE, the PE-RT.
Micron order hollow glass micropearl of the present invention refers to that its particle diameter is≤5um.
Silane coupling agent of the present invention is KH550, and its consumption is 1~2% of HGB.
PP of the present invention (PE)/HGB matrix material, PP (PE) content is 97~65%; HGB content is 2~34%; Other auxiliary agent is about 1%.
Below just be illustrated in conjunction with specific examples:
Example 1
Production technique:
Take by weighing the HGB material and put into homogenizer, behind acetone solvent dilution KH550, the HGB material is stirred on the limit, and KH550 is poured on the limit into, and temperature is controlled between 50~80 degree, and churning time is about 5~8 minutes, and the stirrer rotating speed is 1000 rev/mins.
Take by weighing a certain amount of PP-RCT, coat good HGB, antioxidant 1010,168, lubricant EBS, nucleator nanometer CaCO
3Deng, to pour into together and stirred 5 minutes in the homogenizer, temperature is controlled at about 70 degree.
Materials mixed is extruded with twin screw extruder, and each section of forcing machine temperature is controlled between 170~230 degree, uses the underwater pelletizer pelletizing, produces the PP-RCT/HGB matrix material.
Extrude PP-RCT and PP-RCT/HGB material respectively with two forcing machines, producing the PP-RCT/HGB material with the composite co-extruding mould is the middle layer, and PP-RCT is the three-layer composite pipe road of ectonexine.
The weight percent of PP-RCT/HGB composite-material formula material is:
PP-RCT:?????78%
HGB:????????20%
1010、168????0.5%
EBS??????????0.5%
Nanometer CaCO
31%
PP-RCT/HGB composite three-layer pipeline in order to last method is produced improved heat resisting temperature, compressive strength and toughness, the thermal conductivity that has reduced, and concrete data are as follows:
The physics of tubing and chemical property
Example 2
Production technique:
Take by weighing the HGB material and put into homogenizer, behind acetone solvent dilution KH550, the HGB material is stirred on the limit, and KH550 is poured on the limit into, and temperature is controlled between 50~80 degree, and churning time is about 5~8 minutes, and the stirrer rotating speed is 1000 rev/mins.
Take by weighing a certain amount of PP-R, coat good HGB, antioxidant 1010,168, lubricant EBS, nucleator nanometer CaCO
3Deng, to pour into together and stirred 5 minutes in the homogenizer, temperature is controlled at about 70 degree.
Materials mixed is extruded with twin screw extruder, and each section of forcing machine temperature is controlled between 170~210 degree, uses the underwater pelletizer pelletizing, produces the PP-R/HGB matrix material.
Extrude PP-R and PP-R/HGB material respectively with two forcing machines, producing the PP-R/HGB material with the composite co-extruding mould is the middle layer, and PP-R is the three-layer composite pipe road of ectonexine.
The weight percent of PP-R/HGB composite-material formula material is:
PP-R:???????88%
HGB:????????10%
1010、168????0.5%
EBS??????????0.5%
Nanometer CaCO
31%
PP-R/HGB composite three-layer pipeline in order to last method is produced improved heat resisting temperature, compressive strength and toughness, the thermal conductivity that has reduced, and concrete data are as follows:
Example 3
Production technique:
Take by weighing the HGB material and put into homogenizer, behind acetone solvent dilution KH550, the HGB material is stirred on the limit, and KH550 is poured on the limit into, and temperature is controlled between 50~80 degree, and churning time is about 5~8 minutes, and the stirrer rotating speed is 1000 rev/mins.
Take by weighing a certain amount of PE-HD, coat good HGB, antioxidant 1010,168, lubricant EBS, nucleator nanometer CaCO
3Deng, to pour into together and stirred 5 minutes in the homogenizer, temperature is controlled at about 70 degree.
Materials mixed is extruded with twin screw extruder, and each section of forcing machine temperature is controlled between 120~180 degree, uses the underwater pelletizer pelletizing, produces the PE-HD/HGB matrix material.
Extrude PE-HDT and PE-HD/HGB material respectively with two forcing machines, producing the PE-HD/HGB material with the composite co-extruding mould is the middle layer, and PE-HD is the three-layer composite pipe road of ectonexine.
The weight percent of PE-HD/HGB composite-material formula material is:
PE-HD:??????73%
HGB:????????25%
1010、169????0.5%
EBS??????????0.5%
Nanometer CaCO
31%
PE-HD/HGB composite three-layer pipeline in order to last method is produced improved heat resisting temperature, compressive strength and toughness, the thermal conductivity that has reduced, and concrete data are as follows:
Sample | Shock strength/KJ.M 2 | Thermal conductivity mm/M. ℃ |
??PE-HD | ??12.3 | ??0.36 |
??PE-HD/GHB | ??25.8 | ??0.22 |
Claims (10)
1. one kind has the compound PP of micron order hollow glass micropearl of insulation, toughening functions, the collocation method of PE pipeline (BWPP, BWPE)
2. according to claim 1, it is characterized in that: described hollow glass micropearl is a micron order, and its particle size range is at 0.1~5um.
3. according to claim 1, it is characterized in that: described hollow glass micropearl surface is to coat with silane coupling agent spraying, and this coupling agent can be wherein a kind of among KH550, KH560, the KH570.
4. according to claim 1, it is characterized in that: its weight percent in prescription of described micron order hollow glass micropearl is 3~35%.
5. according to claim 1, it is characterized in that: described PP can be wherein a kind of among PP-H, PP-B, PP-R, the PP-RCT.Weight percent is 3~35% in prescription.
6. according to claim 1, it is characterized in that: described can be a kind of among PE-RT, PE-HD, PE-MD, PE-LD, the PE-LLD.
7. according to claim 1, it is characterized in that: described oxidation inhibitor is 1010,168 combination formula, and weight percent is 0.3~0.6% in prescription.
8. according to claim 1, it is characterized in that: described lubricant is that EBS weight percent in prescription is 0.3~0.6%.
9. according to claim 1, it is characterized in that: described nucleator is that nanometer grade calcium carbonate weight percent in prescription is 1~4%.
10. according to claim 1, it is characterized in that: described various materials weight percent in prescription is:
PP/PE????????93.4~62.4%
HGB??????????3~35%
1010、168????0.3~0.6%
EBS??????????0.3~1%
Nanometer CaCO
31~4%
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CN102070912A (en) * | 2010-11-19 | 2011-05-25 | 吴江龙泾红贝家装有限公司 | Composite material and preparation method thereof |
CN102532722A (en) * | 2011-12-25 | 2012-07-04 | 江苏金波新材料科技有限公司 | Special material for polypropylene pipe |
CN102558688A (en) * | 2011-12-25 | 2012-07-11 | 江苏金波新材料科技有限公司 | Processing method of polypropylene pipes |
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CN103991246A (en) * | 2014-05-13 | 2014-08-20 | 永高股份有限公司 | Method of preparing three-layer co-extrusion pipe fittings from polyolefin master batch |
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CN112628332B (en) * | 2020-12-21 | 2022-05-24 | 福建省榕跃科技发展有限公司 | Anti-seismic support and preparation method thereof |
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Open date: 20100609 |