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Propylene, ethylene/1-butene graft copolymer and its reactive extrusion preparation method

A technology of graft copolymer and butene binary copolymer, which is applied in the preparation of ethylene/1-butene graft copolymer and its reaction extrusion, and in the field of propylene, which can solve the problem of inconsistency in the test value of fracture nominal strain impact brittleness temperature Advanced problems, to achieve the effect of performance improvement, high fracture nominal strain, low impact embrittlement temperature

Active Publication Date: 2020-07-31
JIANGSU HENGFENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Propylene, ethylene / 1-butene copolymer is a copolymer of propylene and ethylene / 1-butene, which has good rigidity and hardness, good physical and mechanical properties, but its nominal strain at break (ie elongation at break) , There is a problem that the test value is not high in terms of impact brittleness temperature

Method used

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  • Propylene, ethylene/1-butene graft copolymer and its reactive extrusion preparation method
  • Propylene, ethylene/1-butene graft copolymer and its reactive extrusion preparation method
  • Propylene, ethylene/1-butene graft copolymer and its reactive extrusion preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of propylene, ethylene / 1-butene graft copolymer, it is prepared by the component of following parts by weight:

[0023]

[0024] Reactive extrusion prepares the method for propylene, ethylene / 1-butene graft copolymer, comprises the following steps:

[0025] Add propylene, ethylene / 1-butene into the first hopper of a twin-screw extruder with an aspect ratio (the ratio of the working length of the screw to the diameter of the screw) of 48:1, and add TMPTM, DCP, and antioxidant 1010 into the twin-screw extruder In the second hopper of the extruder, the ratio of the distance between the second hopper and the first hopper to the total length of the screw is 20:48, and the screw speed is 80 rpm, extruding and granulating in the twin-screw extruder; The outlet temperature settings are shown in Table 2.

[0026] Table 2

[0027]

[0028] The properties of propylene, ethylene / 1-butene graft copolymer and ungrafted copolymer prepared in this embodiment are shown in...

Embodiment 2

[0032] A kind of propylene, ethylene / 1-butene graft copolymer, it is prepared by the component of following parts by weight:

[0033]

[0034] According to the production method of Example 1, propylene and ethylene / 1-butene graft copolymer were obtained, and the properties are shown in Table 4.

[0035] Table 4

[0036] Test items Detection method graft copolymer Nominal Strain at Break% GB / T1040.2-2006 525 Impact embrittlement temperature ℃ GB / T5470-2008 -98

Embodiment 3

[0038] A kind of propylene, ethylene / 1-butene graft copolymer, it is prepared by the component of following parts by weight:

[0039]

[0040] According to the production method of Example 1, propylene and ethylene / 1-butene graft copolymer were obtained, and the properties are shown in Table 5.

[0041] table 5

[0042] Test items Detection method graft copolymer Nominal Strain at Break% GB / T1040.2-2006 516 Impact embrittlement temperature ℃ GB / T5470-2008 -96

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Abstract

The invention discloses a propylene and ethylene / 1-butylene grafted copolymer. The propylene and ethylene / 1-butylene grafted copolymer is prepared from the following components in parts by weight: 95to 105 parts of a propylene and ethylene / 1-butylene copolymer, 6 to 12 parts of TMPTM (Trimethylolpropane Trimethacrylate), 1 to 3 parts of a peroxide initiator and 0.1 to 0.5 part of an antioxidant.The invention further discloses a method for preparing the propylene and ethylene / 1-butylene grafted copolymer through reaction and extrusion; the method comprises the following steps: adding propylene and ethylene / 1-butylene into a first hopper of a double-screw extruder with a screw rod length-diameter ratio of 48 to 1; adding the TMPTM, the peroxide initiator and the antioxidant into a second hopper of the double-screw extruder; extruding and granulating in the double-screw extruder. According to the propylene and ethylene / 1-butylene grafted copolymer disclosed by the invention, a TMPTM grafted monomer and peroxide are added into the propylene and ethylene / 1-butylene copolymer; grafting reaction is carried out in an extrusion process, and a grafted product has relatively high fracture nominal strain and relatively low impact brittle temperature.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a graft copolymer of propylene and ethylene / 1-butene and a reaction extrusion preparation method thereof. Background technique [0002] Propylene, ethylene / 1-butene copolymer is a copolymer of propylene and ethylene / 1-butene, which has good rigidity and hardness, good physical and mechanical properties, but its nominal strain at break (ie elongation at break) , There is a problem that the test value is not high in terms of impact brittleness temperature. Contents of the invention [0003] The object of the present invention is to provide a kind of reaction extrusion propylene, ethylene / 1-butene graft copolymer, add trimethylolpropane trimethacrylate graft monomer and in propylene, ethylene / 1-butene copolymer Peroxide, grafting reaction occurs during the extrusion process, and the grafted product has a higher tensile elongation and a lower notched impact embrittlement te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F285/00C08F222/14C08K5/134
CPCC08F285/00C08K5/1345C08F222/103
Inventor 张建康蒋周山邰锡峰郑义华储强
Owner JIANGSU HENGFENG CABLE
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