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Super high molecular weight polythene/polypropylene/organic clay composition used for extraction formation and preparation method thereof

An ultra-high molecular weight, extrusion molding technology, applied in the field of polymer processing, can solve the problems of expensive manufacturing and poor adaptability of different grades of raw materials, and achieve the effects of increased tensile strength, improved processing rheology, and a wide range of sources

Inactive Publication Date: 2009-09-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The homogenization section of the screw in the plasticizing device is composed of the first homogenization section and the second homogenization section. The second homogenization section and the inner wall of the barrel form an annular screw anti-reverse zone. The screw head includes a first-stage cylinder , the first-stage cone, the second-stage cylinder and the second-stage cone. The nozzle structure has a feeding storage chamber composed of a cylindrical cavity and a conical cavity. This utility model effectively prevents the material from leaking back and reduces plasticization. resistance, but the manufacture of equipment is expensive, and the adaptability to different grades of raw materials is poor

Method used

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  • Super high molecular weight polythene/polypropylene/organic clay composition used for extraction formation and preparation method thereof
  • Super high molecular weight polythene/polypropylene/organic clay composition used for extraction formation and preparation method thereof
  • Super high molecular weight polythene/polypropylene/organic clay composition used for extraction formation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Add dodecyl bromide and dimethylaminoethyl methacrylate in a molar ratio of 1:1 into a three-necked bottle with a stirrer and a condenser, and react for 90 hours in a constant temperature water bath at 50°C. The reactant was cooled to room temperature, poured into a beaker, added 12 times the anhydrous ether of the reactant, stirred, and stood still. After the silver-white crystals were completely precipitated at the bottom of the bottle, the upper layer of ether was separated, and the solid product was obtained by suction filtration. Wash the crystals repeatedly until the ether is colorless, then recrystallize the product with ethyl acetate to remove unreacted raw materials and polymerization inhibitors, and put the obtained product in a vacuum oven with a vacuum degree of 10 4 Pa, dried at room temperature to constant weight to obtain methacryloyloxyethyl dodecyldimethyl ammonium bromide (MDAB).

[0034] Add 100g of MDAB, 100g of polyethylene glycol with a ...

Embodiment 2

[0035] Example 2: Mix 13g of composite processing aid PMM, 0.9g of talcum powder, 0.3g of 4-hydroxymethyl-2,6-di-tert-butylphenol and 0.5g of oxidized polyethylene wax, and use twin-screw extrusion to granulate . All the other components and operating conditions are with embodiment 1 in the formula. The results are shown in Table 1.

Embodiment 3

[0036] Example 3: Mix 15g of composite processing aid PMM, 0.5g of talcum powder, 1.0g of 4-hydroxymethyl-2,6-di-tert-butylphenol and 1.0g of oxidized polyethylene wax, and use twin-screw extrusion to granulate . All the other components and operating conditions are with embodiment 1 in the formula. The results are shown in Table 1.

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Abstract

The invention discloses a polyethylene / polypropylene / organic clay composition with squeezing moudling hypermolecular weight as well as making method, which comprises the following steps: adding 10-30wt% polypropylene, 1-5wt% composite manufacturing adjuvant, 0. 1-1wt% anti-oxidant, 0. 1-1wt% nucleation agent and 0. 1-1wt% lubricant into the 70-90wt% hypermolecular weight polyethylene in the high-speed blender; stirring at 70-90 deg. c for 2-5min; graining through double screw squeezing under 170-220 deg. c; modifying the manufacturing property of UHMWPE with squeezing speed to 3. 5-4. 0m / min; improving the stretching strength to 22. 84% without changing the impact property basically.

Description

technical field [0001] The invention relates to an extruded ultrahigh molecular weight polyethylene / polypropylene / organic clay composition and a preparation method thereof, belonging to the field of polymer processing. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) is known as "amazing plastic" abroad. It has the following characteristics: excellent wear resistance, such as the minimum friction coefficient is 0.07-0.11, which is equivalent to the friction between ice and ice; the pipe made of it shows extremely high self-lubrication and anti-fouling properties, and is a wear-resistant pipe Excellent chemical stability; the stress cracking resistance of the pipe is 200 times that of ordinary polyethylene; the impact resistance ranks first among plastics, and the low temperature impact is especially superior, even in the liquid nitrogen temperature zone (-196 ° C) can still Maintain a certain degree of resilience. Although ultra-high molecula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K5/524B29C47/40B29B9/12C08L23/12C08K5/13C08K5/09C08K5/20C08K3/34B29C48/40
CPCB29C2947/92704B29C2948/92704B29C48/40
Inventor 李惠林盖景刚陈金耀
Owner SICHUAN UNIV
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