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Preparation method of itaconic acid grafted ethylene-octylene block copolymer granules

An octene block and copolymer technology, which is applied in the field of preparation of itaconic acid grafted ethylene-octene block copolymer pellets, can solve the problems of poor compatibility of direct blending and decreased mechanical strength of alloy materials, etc. Achieve the effect of improving notched impact strength, elongation at break and impact toughness

Inactive Publication Date: 2012-11-07
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects such as poor compatibility of direct blending of existing OBC and PA66, and the decrease of the mechanical strength of the alloy material produced, the invention provides a preparation method of itaconic acid grafted ethylene-octene block copolymer pellets

Method used

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  • Preparation method of itaconic acid grafted ethylene-octylene block copolymer granules
  • Preparation method of itaconic acid grafted ethylene-octylene block copolymer granules
  • Preparation method of itaconic acid grafted ethylene-octylene block copolymer granules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Set the density to 0.877g / cm 3 93.0kg of OBC with a melting point of 122°C, a tensile strength of 9.5MPa, and an elongation at break of 1600%, 3.0kg of ITA with a mass percentage of 99.8%, and a melting point of 166°C, BPO0.15kg, triphenyl phosphite Put 0.35 kg of ester in a mixer, control the mixer speed to 250r / min, temperature 75°C, stir and mix for 7 minutes to form a mixture; put the mixture in a reactive twin-screw extruder for melting and grafting reaction, and control the reactive twin-screw extruder The temperature of the discharge cylinder is 155°C in zone I, 160°C in zone II, 165°C in zone III, 170°C in zone IV, 175°C in zone V, 175°C in zone VI, 175°C in zone VII, and 170°C in zone VIII. The die head temperature is 167°C; Control the screw speed of the reactive twin-screw extruder to 70r / min, extrude and pelletize itaconic acid grafted ethylene-octene block copolymer (OBC-g-ITA) pellets.

[0017] The OBC-g-ITA granule material that embodiment 1 makes, itaco...

Embodiment 2

[0021] Set the density to 0.877g / cm 3 96.5kg of OBC with a melting point of 122°C, a tensile strength of 9.5MPa, and an elongation at break of 1600%, 6.0kg of ITA with a mass percentage of 99.8%, and a melting point of 166°C, BPO0.35kg, triphenyl phosphite Put 0.65kg of ester in a mixer, control the speed of the mixer to 250r / min, temperature 76°C, stir and mix for 7 minutes to form a mixture; put the mixture in a reactive twin-screw extruder for melting and grafting reaction, and control the reactive twin-screw extruder The temperature of the discharge cylinder is 158°C in zone I, 163°C in zone II, 168°C in zone III, 173°C in zone IV, 178°C in zone V, 178°C in zone VI, 178°C in zone VII, and 173°C in zone VIII. The die head temperature is 170°C; Control the screw speed of the reactive twin-screw extruder to 90r / min, extrude and pelletize itaconic acid grafted ethylene-octene block copolymer (OBC-g-ITA) pellets.

[0022] The OBC-g-ITA granular material that embodiment 2 makes...

Embodiment 3

[0026] Set the density to 0.877g / cm 3 94.5kg of OBC with a melting point of 122°C, a tensile strength of 9.5MPa, and an elongation at break of 1600%, 4.5kg of ITA with a mass percentage of 99.8%, and a melting point of 166°C, BPO0.28kg, triphenyl phosphite Put 0.5kg of ester in a mixer, control the speed of the mixer to 250r / min, temperature 74°C, stir and mix for 7 minutes to form a mixture; put the mixture in a reactive twin-screw extruder for melting and grafting reaction, and control the reactive twin-screw extruder The temperature of the discharge cylinder is 157°C in zone I, 162°C in zone II, 166°C in zone III, 172°C in zone IV, 177°C in zone V, 177°C in zone VI, 177°C in zone VII, and 172°C in zone VIII. The die head temperature is 168°C; Control the screw speed of the reactive twin-screw extruder to 80r / min, extrude and pelletize itaconic acid grafted ethylene-octene block copolymer (OBC-g-ITA) pellets.

[0027] Table 3 PA66, PA66 / OBC and PA66 / OBC / OBC-g-ITA physical a...

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Abstract

The invention relates to a preparation method of itaconic acid grafted ethylene-octylene block copolymer granules. The method comprises steps of: based on 93.0-96.5 parts by weight of ethylene-octylene block copolymer as a base material, adding 3.0-6.0 parts by weight of itaconic acid, 0.15-0.35 parts by weight of dibenzoyl peroxide and 0.35-0.65 parts by weight of triphenyl phosphate, mixing under stirring, and carrying out double-screw extrusion melt grafting reaction to prepare the itaconic acid grafted ethylene-octylene block copolymer granules. The grafting rate of the granules prepared by using the preparation method is 1.35%-1.65%; when the granules serve as a compatilizer of PA (polyamide) 66 and OBC (ethylene-octylene block copolymer) blended alloy materials, compared with pure PA66, the prepared PA66 / OBC / OBC-g-ITA (itaconic acid) alloy material has the advantages that the elongation at break is improves by 35%-48%, notch impact strength is improved by 30%-40%, the impact toughness is obviously improved, and the water absorption rate and shrinkage factor are obviously reduced.

Description

technical field [0001] The invention relates to a preparation method of itaconic acid grafted copolymer, in particular to a preparation method of itaconic acid grafted ethylene-octene block copolymer granular material. Background technique [0002] Polyamide (PA), also known as nylon, is an important engineering plastic, and its output ranks first among the five general-purpose engineering plastics. It has high softening point, good heat resistance, low friction coefficient, good self-lubrication, high tensile strength, and self-extinguishing. It is widely used in machinery, automobile, chemical industry, electronic appliances and other fields due to its good performance and weather resistance. Among the polyamide (PA) series products, polyamide 66, also known as nylon 66 (PA66), has high hardness and rigidity, but its notched impact toughness is poor, water absorption and shrinkage are large, and its application range is limited. [0003] Ethylene-octene block copolymer (O...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F287/00C08F222/02C08K5/526C08L77/06C08L51/06B29B9/06B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 张华集曾丽张雯肖荔人陈晓
Owner FUJIAN NORMAL UNIV
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