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A kind of super-tough pom composition and its preparation method and application

A composition and super tough technology, applied in the field of polymer materials, can solve the problem of low toughness of POM resin, and achieve the effect of good toughness

Active Publication Date: 2022-03-01
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the low defect of POM resin toughness in the prior art and provide a kind of super tough POM composition

Method used

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  • A kind of super-tough pom composition and its preparation method and application
  • A kind of super-tough pom composition and its preparation method and application

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Embodiment 1～12

[0063] According to the formula in Table 1, add POM resin, polyether block amide elastomer, TPU elastomer and additives into the mixer and mix evenly, then feed into the twin-screw extruder at a feeding rate of 50-200kg / h , where the temperature of each screw barrel from the feeding port of the twin-screw extruder to the machine head is: 150°C-180°C, 170°C-210°C, 170°C-210°C, 170°C-210°C, 170°C-210°C , 170°C-200°C, 170°C-200°C, 170°C-200°C, 170°C-200°C, 170°C-210°C, the speed of the twin-screw extruder is 250~350r / min, and the vacuum degree is -0.1 ~0MPa, after extrusion, cooling and granulation, remember the super-tough POM composition.

[0064] Each embodiment raw material formula of table 1 (weight part)

[0065]

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Abstract

The invention provides a super-tough POM composition and its preparation method and application. The super-tough POM composition of the present invention includes the following components calculated in parts by weight: 100 parts of POM resin; 80 to 135 parts of polyether block amide elastomer; 15 to 25 parts of TPU elastomer; wherein, the POM resin The melt index is 1.9-9g / 10min at 190°C and 2.16kg; the polyether block amide elastomer is composed of PA11 and polyether; the melting point of the polyether block amide elastomer is 150-190°C. The notched impact strength of the super-tough POM composition of the present invention can be as high as 106kJ / m 2 , The elongation at break can be as high as 500%.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a super-tough POM composition and its preparation method and application. Background technique [0002] Polyoxymethylene (POM) resin has a linear molecular chain configuration, and has the characteristics of high structural symmetry and high regularity, so it has strong crystallization ability. Due to the high crystallinity of POM resin, it has high strength and high hardness, is sensitive to notches, and is prone to brittle fracture during use, which greatly limits its scope of application. Therefore, it is necessary to toughen the POM resin. However, due to the lack of functional groups and side groups that can react with other polymers in the POM molecular chain, the POM molecule is weakly polar and has poor compatibility with most toughening agents, so it is difficult to be toughened. [0003] In the existing toughening modification of POM, there are three types: elastomer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/02C08L87/00C08L75/06C08L75/08
CPCC08L59/02C08L87/005C08L2205/03C08L2205/08C08L75/06C08L75/08
Inventor 陈锋黄险波叶南飚付学俊曹绍强丁超
Owner KINGFA SCI & TECH CO LTD
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