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High-transparency modified polyolefin material and preparation method thereof

A polyolefin and transparent technology, applied in the field of modified plastics, can solve the problems of high temperature stability, poor aging resistance, and affecting visual effects, etc., to ensure dimensional stability, improve toughness and rigidity, and avoid impact Effect

Active Publication Date: 2020-10-09
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned materials also have many problems. The transparent polymer materials currently on the market are usually amorphous materials, which have great stability to high temperatures and are prone to creep, resulting in unstable structure of the part.
At the same time, this type of material has poor aging resistance and is prone to color changes, which will affect the visual effect.

Method used

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  • High-transparency modified polyolefin material and preparation method thereof
  • High-transparency modified polyolefin material and preparation method thereof
  • High-transparency modified polyolefin material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 65 parts of poly 4-methyl-1-pentene, 10 parts of basic magnesium carbonate, 0.5 part of antioxidant, and 0.2 part of dispersant into the vacuum internal mixer, mix well for 5 minutes, and then add polyisobutylene 15 to it Parts, 10 parts of ethylene-propylene rubber, 0.1 part of vulcanizing agent, 0.2 part of butylated hydroxytoluene, after mixing for 3 minutes, the tablets can be opened or granulated through die stretch; the processing temperature of the internal mixer is 260℃, The mound pressure is 0.55MPa, and the screw speed of the internal mixer is 50r / min. Product performance is shown in Table 1.

Embodiment 2

[0028] Add 75 parts of poly 4-methyl-1-pentene, 7 parts of basic magnesium carbonate, 0.5 part of antioxidant, and 0.2 part of dispersant into the vacuum internal mixer, mix evenly for 4 minutes, and then add polyisobutylene 10 to it Parts, 8 parts of ethylene propylene rubber, 0.1 part of vulcanizing agent, 0.2 part of butylated hydroxytoluene, after mixing for 2 minutes, the tablets can be opened or granulated through die stretch; the processing temperature of the internal mixer is 250℃, The mound pressure is 0.55MPa, and the screw speed of the internal mixer is 40r / min. Product performance is shown in Table 1.

Embodiment 3

[0030] Add 85 parts of poly 4-methyl-1-pentene, 5 parts of basic magnesium carbonate, 0.5 part of antioxidant, and 0.2 part of dispersant into the vacuum internal mixer, mix evenly for 3 minutes, and then add polyisobutylene 7 to it Parts, 3 parts of ethylene-propylene rubber, 0.1 part of vulcanizing agent, 0.2 part of butylated hydroxytoluene, after mixing for 1 minute, the tablets can be opened or granulated through die stretch; the processing temperature of the internal mixer is 240℃, The mound pressure is 0.55MPa, and the screw speed of the internal mixer is 30r / min. Product performance is shown in Table 1.

[0031] Table 1

[0032] Test item / unit standard test Example 1 Example 2 Example 3 Density / g / cm 3

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Abstract

The invention discloses a high-transparency modified polyolefin material and a preparation method thereof. The high-transparency modified polyolefin material is prepared from 65-85 parts of poly(4-methyl-1-pentene), 7-15 parts of polyisobutene, 3-10 parts of ethylene propylene rubber, 0.1 part of a vulcanizing agent, 0.2 part of butylated hydroxytoluene, 5-10 parts of basic magnesium carbonate, 0.5 part of an antioxidant and 0.2 part of a dispersing agent. According to the high-transparency modified polyolefin material provided by the invention, the crystalline material poly(4-methyl-1-pentene) with an excellent light transmission effect is selected as a base material, so that the dimensional stability of the disclosed material at a relatively high temperature is ensured; the high-molecular-weight polyisobutene and the micro-crosslinked low-molecular-weight ethylene propylene diene monomer are used as toughening agents, and the basic magnesium carbonate with a special optical refractive index is used as a filling substance, so that the toughness and rigidity of the disclosed material are improved, and the influence on the overall transparency of the disclosed material is avoided tothe greatest extent.

Description

Technical field [0001] The invention relates to the technical field of modified plastics, in particular to a highly transparent modified polyolefin material and a preparation method thereof. Background technique [0002] Transparent material is a kind of material with excellent optical permeability, which is mainly used in industries that require stricter visual effects such as automobiles, electronic appliances and medicine. At present, the most commonly used glass materials are ordinary glass materials. However, with the continuous development of the field of polymer materials, many polymer materials with excellent characteristics and more convenient processing and molding have been developed, and continue to replace ordinary inorganic glass and be widely used. Such as polymethyl methacrylate (PMMA), polystyrene (PS), polycarbonate (PC) and so on. Compared with inorganic glass, transparent polymer obviously has lighter weight, higher toughness and lower price. At the same time...

Claims

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Application Information

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IPC IPC(8): C08L23/20C08L23/16C08K3/26
CPCC08L23/20C08L2205/03C08L2201/10C08K2003/267C08L23/22C08L23/16C08K3/26
Inventor 杨桂生赵鑫朱敏
Owner HEFEI GENIUS NEW MATERIALS
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