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A kind of highly transparent modified polyolefin material and its preparation method

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 improve toughness and rigidity, ensure dimensional stability, and avoid impact Effect

Active Publication Date: 2022-05-06
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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  • A kind of highly transparent modified polyolefin material and its preparation method
  • A kind of highly transparent modified polyolefin material and its preparation method
  • A kind of highly transparent modified polyolefin material and its preparation method

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 parts of antioxidant, and 0.2 parts of dispersant into the vacuum internal mixer, mix well for 5 minutes, and then add 15 parts of polyisobutylene 10 parts of ethylene-propylene rubber, 0.1 part of vulcanizing agent, and 0.2 part of butylated hydroxytoluene. After 3 minutes of continuous mixing, the tablets can be opened, or granulated by drawing rods through the die; the processing temperature of the internal mixer is 260 ° C, and the upper The pressure of the ram is 0.55MPa, and the screw speed of the internal mixer is 50r / min. The 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 parts of antioxidant, and 0.2 parts of dispersant into the vacuum internal mixer, mix well for 4 minutes, and then add 10 parts of polyisobutylene 8 parts of ethylene-propylene rubber, 0.1 part of vulcanizing agent, 0.2 part of butylated hydroxytoluene, continue to knead for 2 minutes to open the tablet, or granulate through the die drawstring; the processing temperature of the internal mixer is 250 ℃, and the upper The pressure of the ram is 0.55MPa, and the screw speed of the internal mixer is 40r / min. The 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 parts of antioxidant, and 0.2 parts of dispersant into the vacuum internal mixer, mix well for 3 minutes, and then add polyisobutylene 7 1 part, 3 parts of ethylene-propylene rubber, 0.1 part of vulcanizing agent, 0.2 part of butylated hydroxytoluene, continue to knead for 1 minute, then you can open the tablet, or granulate through the die-stretch; the processing temperature of the internal mixer is 240 ℃, and the upper The pressure of the ram is 0.55MPa, and the screw speed of the internal mixer is 30r / min. The 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 highly transparent modified polyolefin material and a preparation method thereof, which comprises 65-85 parts of poly-4-methyl-1-pentene, 7-15 parts of polyisobutylene, 3-10 parts of ethylene-propylene rubber, Prepared by 0.1 part of vulcanizing agent, 0.2 part of butylated hydroxytoluene, 5-10 parts of basic magnesium carbonate, 0.5 part of antioxidant and 0.2 part of dispersant. The highly transparent modified polyolefin material provided by the present invention selects poly-4-methyl-1-pentene, a crystalline material with excellent light transmission effect, as the base material, which ensures the dimensional stability of the material at relatively high temperatures; Molecular weight polyisobutylene and slightly cross-linked low molecular weight EPDM rubber are used as tougheners, and basic magnesium carbonate with special optical refractive index is used as filler material, which not only improves the toughness and rigidity of the material, but also avoids Effect on the overall transparency of the material.

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 material with excellent optical transparency, which is mainly used in industries with strict visual effects such as automobiles, electronic appliances, and medicine. At present, ordinary glass is the most widely used material, but with the continuous development of the field of polymer materials, many polymer materials with excellent characteristics and more convenient processing have been developed, and are widely used instead of ordinary inorganic glass. Such as polymethyl methacrylate (PMMA), polystyrene (PS), polycarbonate (PC) and so on. Compared with inorganic glass, transparent polymers obviously have lighter weight, higher toughness and lower price. At the same time, parts with complex structures can be quickly prepared by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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