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Medical-grade PP Toughening and anti-reflection master batch

A toughening and masterbatch technology, which is applied in the field of medical polymer materials, can solve the problems of material yellowing, low temperature conditions are not representative enough, and are not easy to disperse, so as to achieve low processing temperature, avoid multiple high temperature processing, and reduce yellowing. Effect

Pending Publication Date: 2021-12-31
道恩高材(北京)科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN 102311584 A uses POE as a toughening agent and sorbitol-based α-nucleating agent as an anti-reflection agent to obtain better transparency and a low-temperature cantilever beam impact of -10°C of 30-42J / m, which is also not enough for low temperature conditions sex
[0005] In addition, most medical-grade polypropylene is prepared by adding antioxidants, nucleating agents, lubricants, nucleating agents, toughening masterbatches, etc. The nucleating agents are not easy to disperse during the blending process and are directly added to PP. The processing temperature is generally above 200°C, which will cause yellowing of the material

Method used

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  • Medical-grade PP Toughening and anti-reflection master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Weigh toughening agent vinyl polymer grafted polyether polyol 1850G 5kg, POE 8540 3kg, POEDF610 2.5kg, nucleating agent NX8000K 80g, nucleating agent TMAC 6992 23g, lubricant oleic acid amide 100g, Oxygen agent 1076 120g. Put all the above in a high-speed mixer and mix for 10 minutes, and release it after the time is up.

[0035]Step 2: Put the mixed material in a twin-screw extruder for melt blending and extrusion, the first zone is 60°C, the second zone is 160°C, the third zone is 160°C, the fourth zone is 165°C, the fifth zone is 170°C, and the sixth zone is 170°C ℃, 180℃ in the seventh zone, 180℃ in the eighth zone, 180℃ in the ninth zone, 180℃ in the tenth zone, 180℃ in the eleventh zone, and 160℃ in the machine head. The speed of the host machine is 350r / min, the speed of feeding is 25r / min, and the pelletizing is water-cooled.

[0036] Step 3: Mix the prepared toughening and antireflection masterbatch with PP 5250T at a ratio of 1:10 for testing.

Embodiment 2

[0038] Step 1: Weigh POE 8540 6kg, POE DF610 5.5kg, nucleating agent NX8000K 80g, nucleating agent TMAC6992 25g, lubricant oleamide 150g, antioxidant 1076 100g. Put all the above in a high-speed mixer and mix for 10 minutes, and release it after the time is up.

[0039] Step 2: Place the mixed material in a twin-screw extruder for melt blending and extrusion, the first zone is 60°C, the second zone is 160°C, the third zone is 160°C, the fourth zone is 165°C, the fifth zone is 170°C, and the sixth zone is 170°C ℃, 180℃ in the seventh zone, 180℃ in the eighth zone, 180℃ in the ninth zone, 180℃ in the tenth zone, 180℃ in the eleventh zone, and 160℃ in the machine head. The speed of the main machine is 350r / min, the speed of feeding is 25r / min, and the pelletizing is water-cooled.

[0040] Step 3: Mix the prepared toughening and antireflection masterbatch with PP 5250T at a ratio of 1:10 for testing.

Embodiment 3

[0042] Step 1: Weigh toughening agent vinyl polymer graft polyether polyol 1850G 5kg, POE 8540 3kg, POEDF610 2.5kg, nucleating agent NX8000K 80g, TMAC 6992 25g, lubricant erucamide 150g, antioxidant 1076100g . Put all the above in a high-speed mixer and mix for 10 minutes, and release it after the time is up.

[0043] Step 2: Put the mixed material in a twin-screw extruder for melt blending and extrusion, the first zone is 60°C, the second zone is 160°C, the third zone is 160°C, the fourth zone is 165°C, the fifth zone is 170°C, and the sixth zone is 170°C ℃, 180℃ in the seventh zone, 180℃ in the eighth zone, 180℃ in the ninth zone, 180℃ in the tenth zone, 180℃ in the eleventh zone, and 160℃ in the machine head. The speed of the host machine is 350r / min, the speed of feeding is 25r / min, and the pelletizing is water-cooled.

[0044] Step 3: Mix the prepared toughening and antireflection masterbatch with PP 5250T at a ratio of 1:10 for testing.

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Abstract

The invention relates to a medical-grade PP Toughening and anti-reflection master batch. The master batch is prepared from the following substances in parts by weight: 100 parts of a toughening agent vinyl polymer grafted polyether polyol, 15-30 parts of a toughening agent POE and 25-25 parts of a toughening agent POE, 1-3 parts of a nucleating agent, 1-3 parts of an antioxidant and 1-5 parts of a lubricant. The PP toughening and anti-reflection master batch prepared by the invention can be directly blended with PP during use without adding other auxiliaries, and the obtained material has higher transparency, good impact strength at the low temperature of-20 DEG C and normal temperature for more than 24 hours, and yellowing resistance; the PP toughening and anti-reflection master batch prepared by the invention can be used for various PP, is good in processability and flowability, can be used for filling each mold cavity during mass production of various mold cavities, and does not generate injection molding defects.

Description

technical field [0001] The invention belongs to the field of medical polymer materials, in particular to a masterbatch for medical grade PP toughening and anti-reflection. Background technique [0002] Polypropylene has low density, good heat resistance and chemical resistance, non-toxic and tasteless, good surface gloss, and excellent comprehensive performance, but poor low temperature toughness, and some medical equipment produced are seriously damaged during transportation in winter. At present, the domestic express delivery industry is well-developed, and the daily transportation volume is huge. Violent loading, unloading and transportation are unavoidable. Violent transportation under normal temperature and low temperature will cause serious damage. In addition, the transparency is generally poor, and medical-grade infusion sets and droppers need better transparency. The current method is to add α-nucleating agents to improve transparency, but adding nucleating agents w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/08C08L23/08C08L23/12C08K5/00C08J3/22
CPCC08J3/226C08J2323/12C08J2451/08C08J2423/08C08K5/0083
Inventor 王媛孙显茹陈文泉郭华张政王保兵田洪池
Owner 道恩高材(北京)科技有限公司
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