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High-performance PET (Polyethylene Terephthalate) composite material capable of being applied to medium and low mold temperature rapid crystallization molding and preparation method of PET composite material

A composite material, high-performance technology, applied in the polymer field, can solve the problems of low heat resistance, long injection molding cycle, incomplete crystallinity, etc., achieve excellent toughness and heat resistance, shorten the injection molding cycle, and excellent mechanical properties. performance effect

Inactive Publication Date: 2019-03-19
GUANGDONG WAYLAM ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET is a semi-crystalline high polymer with a slow crystallization rate and incomplete crystallinity, which limits its application in the engineering field. Therefore, people have been working on improving the crystallization rate of PET for many years. , to improve its processing performance
[0003] However, compared with foreign well-known brands (such as FR530), the PET modified engineering plastic products of most domestic modification companies have the problems of long injection molding cycle, poor mechanical properties, low heat resistance and poor toughness, resulting in foreign products. Occupy a significant advantage in the middle and high-end market

Method used

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  • High-performance PET (Polyethylene Terephthalate) composite material capable of being applied to medium and low mold temperature rapid crystallization molding and preparation method of PET composite material
  • High-performance PET (Polyethylene Terephthalate) composite material capable of being applied to medium and low mold temperature rapid crystallization molding and preparation method of PET composite material
  • High-performance PET (Polyethylene Terephthalate) composite material capable of being applied to medium and low mold temperature rapid crystallization molding and preparation method of PET composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Put PET with a viscosity of 0.78dL / g in a blower dryer at 110°C for 3 hours, and set aside;

[0030] (2) According to the weight percentage of Table 1, the talcum powder, barium sulfate, silicon dioxide powder, calcium carbonate, organic sodium salts, phosphoric acid esters, polyethylene glycol, pentaerythritol stearate, inorganic phosphoric acid Salt, pentaerythritol stearate, and ethylene bisstearic acid amide are mixed uniformly to obtain a composition material, for subsequent use;

[0031] (3) According to the weight percentage in Table 1, take PET, alkali-free glass fiber yarn, SEBS-g-MAH, EMA, KH570, KH792 and put into the mixer and mix evenly, then add the composition material and mix evenly again, finally add triphosphate The compound flame retardant of phenyl ester, decabromodiphenyl ether and decabromodiphenylethane is mixed evenly;

[0032] (4) Add the mixed materials into the twin-screw extruder to granulate. The temperature of each section of the twin-...

Embodiment 2

[0035] (1) Put PET with a viscosity of 0.78dL / g in a blower dryer at 110°C for 3.5 hours, and set aside;

[0036] (2) According to the weight percentage of Table 1, the talcum powder, barium sulfate, silicon dioxide powder, calcium carbonate, organic sodium salts, phosphoric acid esters, polyethylene glycol, pentaerythritol stearate, inorganic phosphoric acid Salt, pentaerythritol ester, pentaerythritol stearate, silicone powder, and lubricant TAF are mixed uniformly to obtain a composition material, which is set aside;

[0037] (3) According to the weight percentage in Table 1, weigh PET, alkali-free glass fiber yarn, EVA, and KH560 and put them into the mixer and mix them evenly, then add the composition material and mix evenly again, finally add triphenyl phosphate, decabromodiphenyl ether Mix evenly with the compound flame retardant of decabromodiphenylethane;

[0038] (4) Add the mixed materials into the twin-screw extruder to granulate. The temperature of each section o...

Embodiment 3

[0041] (1) Dry the PET with a viscosity of 0.78dL / g in a blast dryer at 110°C for 3.5H, and set aside;

[0042] (2) By weight percentage in Table 1, the weighed talcum powder, barium sulfate, silicon dioxide powder, calcium carbonate, organic sodium salts, phosphoric acid esters, polyethylene glycol, pentaerythritol stearate, pentaerythritol ester , silicone powder mixed evenly to obtain a composite material, set aside;

[0043] (3) According to the weight percentage in Table 1, weigh PET, E-glass fiber yarn, POE-g-MAH, EPDM-g-MAH, SEBS-g-MAH, KH792 and put them into the mixer to mix evenly, then add the composition Mix evenly again, and finally add triphenyl phosphate, decabromodiphenyl ether and decabromodiphenylethane compound flame retardant and mix evenly;

[0044] (4) Add the mixed materials into the twin-screw extruder to granulate. The temperature of each section of the twin-screw extruder is: 230°C in zone 1, 234°C in zone 2, 235°C in zone 3, and 235°C in zone 4. 24...

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Abstract

The invention discloses a high-performance PET (Polyethylene Terephthalate) composite material capable of being applied to medium and low mold temperature rapid crystallization molding and a preparation method of the PET composite material and relates to the technical field of high polymers. According to the technical scheme, the PET composite material is formed by the following components in percentage by weight: 40-55% of PET, 0.2-1% of a coupling agent, 1-8% of a flexibilizer, 0.3-5% of a compound nucleating agent, 9-15% of a compound flame retardant, 0.2-0.6% of an antioxidant, 0.5-1.5% ofother additives and 20-45% of alkali-free glass fiber yarns. Compared with the traditional PET material, the high-performance PET composite material prepared by the invention has the advantages thatthe injection molding cycle of the PET material is greatly shortened, and the material has excellent mechanical property and excellent toughness and heat resistance and can meet novel market requirements.

Description

【Technical field】 [0001] The invention relates to the technical field of macromolecules, in particular to a high-performance PET composite material that can be used for rapid crystallization at medium and low mold temperatures and a preparation method thereof. 【Background technique】 [0002] PET plastic has a wide range of sources, is cheap, and has excellent performance, and its usage is increasing year by year. However, PET is a semi-crystalline high polymer with a slow crystallization rate and incomplete crystallinity, which limits its application in the engineering field. Therefore, people have been working on improving the crystallization rate of PET for many years. , to improve its processing performance. [0003] However, compared with foreign well-known brands (such as FR530), the PET modified engineering plastic products of most domestic modification companies have the problems of long injection molding cycle, poor mechanical properties, low heat resistance and poo...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L71/02C08K7/14C08K5/523C08K5/06C08K5/03C08K3/34C08K3/30C08K3/36C08K3/26C08K5/103C08K3/32
CPCC08K2003/265C08K2003/3045C08K2003/321C08L67/02C08L2201/02C08L71/02C08K7/14C08K5/523C08K5/06C08K5/03C08K3/34C08K3/30C08K3/36C08K3/26C08K5/103C08K3/32
Inventor 刘巍皮正亮葛嘉宝
Owner GUANGDONG WAYLAM ENG PLASTICS
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