Supercharge Your Innovation With Domain-Expert AI Agents!

Reinforced modified PET polyester blend and polyethylene glycol terephthalate blend plastic

A technology of polyethylene terephthalate and blends, applied in the field of polymer materials, can solve problems such as increased production costs, increased personnel burns, unfavorable environmental protection, etc., and achieves increased crystallization temperature, accelerated crystallization rate, mechanical The effect of not degrading performance

Active Publication Date: 2021-04-30
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the first method, the mold needs to be heated to 120°C. There are many disadvantages in the operation process: firstly, it consumes a lot of energy, and it needs to be equipped with a heating device to maintain the temperature of the mold; secondly, such a high temperature is a big test for equipment and operators, increasing the number of personnel The possibility of burns; moreover, this will increase the production cost, and it is not conducive to environmental protection
However, there is still room for further improvement in the performance of this nucleating agent

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reinforced modified PET polyester blend and polyethylene glycol terephthalate blend plastic
  • Reinforced modified PET polyester blend and polyethylene glycol terephthalate blend plastic
  • Reinforced modified PET polyester blend and polyethylene glycol terephthalate blend plastic

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0075] (1) Dissolve 100g of maleic anhydride, 118g of α-methylstyrene, 26g of divinylbenzene, and 2g of azobisisobutyronitrile in 1000mL of isoamyl acetate, and react at 70°C for 5 hours under a nitrogen atmosphere . The reacted system was centrifuged by a centrifuge at 5000 rad / min for 30 minutes to obtain cross-linked α-methylstyrene / maleic anhydride polymer microspheres, which were washed and purified with n-hexane and dried in vacuum. At the same time, the supernatant after centrifugation is analyzed by LC-MC (liquid chromatography-mass spectrometry on-line), and the remaining monomer amount is measured, and the remaining monomer amount is subtracted from the input monomer amount (or cross-linking amount). Quantity (or crosslinking dosage) obtains the monomer quantity (or crosslinking dosage) that actually participates in the reaction, thereby obtains the molar ratio between structural unit A, structural unit B and crosslinking structure, as shown in Table 1 below.

[007...

preparation Embodiment 2

[0078] (1) Dissolve 100g of maleic anhydride, 118g of α-methylstyrene, 26g of divinylbenzene, and 2g of azobisisobutyronitrile in 1000mL of isoamyl acetate, and react at 70°C for 5 hours under a nitrogen atmosphere . After the reaction, the system was centrifuged at 5000 rad / min for 30 minutes to obtain cross-linked α-methylstyrene / maleic anhydride polymer microspheres, which were washed and purified with methanol and dried in vacuum; the structural characteristics are shown in Table 1 Show.

[0079] (2) Join 50g of cross-linked α-methylstyrene / maleic anhydride polymer microspheres into 400mL dispersant n-heptane, then add 6.2g potassium hydroxide (relative to every mole of maleic anhydride, alkali 0.55 mol) and 83.8 g of aniline (4.5 mol per mol of maleic anhydride) were reacted at 80° C. for 2.5 hours. The reacted system was centrifuged under the condition of 5000rad / min for 30 minutes by a centrifuge, 300mL of ethanol was added to the obtained solid for stirring and washi...

preparation Embodiment 3

[0081] (1) 130 g of maleic anhydride, 104 g of styrene, 26 g of divinylbenzene, and 2.5 g of azobisisobutyronitrile were dissolved in 1000 mL of isoamyl acetate, and reacted at 60° C. for 10 hours under a nitrogen atmosphere. After the reaction, the system was centrifuged under the condition of 5000rad / min for 30 minutes to obtain cross-linked α-methylstyrene / maleic anhydride polymer microspheres, which were washed with methanol and dried in vacuum; the structural characteristics are shown in Table 1 below .

[0082] (2) Join 50g of cross-linked α-methylstyrene / maleic anhydride polymer microspheres in 350mL dispersant n-hexane, then add 3.6g sodium hydroxide (relative to the maleic anhydride per mole, the consumption of alkali 0.45 mol) and 22.0 g of 2-hydroxyethylamine (the amount of amine used is 1.7 mol per mol of maleic anhydride), and reacted at 30° C. for 7 hours. After the reaction, the system was centrifuged under the condition of 5000rad / min for 30 minutes, and 400mL...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of high polymer materials, and relates to a reinforced modified PET polyester blend and polyethylene glycol terephthalate blend plastic. The blend comprises polyethylene glycol terephthalate and a microsphere ionomer with a cross-linked structure, the ionomer contains at least one structural unit A shown in a formula (1), at least one structural unit B shown in a formula (2), optionally at least one structural unit C shown in a formula (3) and a cross-linked structure provided by a cross-linking agent, M is a metal cation, wherein R1 and R2 are respectively and independently H, alkyl or aryl, and R is H or methyl. The reinforced modified PET polyester blend has the advantages that the crystallization speed of PET is further increased, an injection product does not deform at the mold temperature of 60-80 DEG C, the warping property of a formed product can be reduced, and the dimensional stability of the product is improved.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a reinforced modified PET polyester blend and a polyethylene terephthalate blend prepared from the reinforced modified PET polyester blend. plastic. Background technique [0002] Polyethylene terephthalate (PET) is prepared by polycondensation reaction. It has mature technology, wide range of raw materials, and relatively low price. It can be used to prepare engineering plastics. As an engineering plastic, PET reinforced material has high strength, and it is also required to complete crystallization relatively quickly during processing, especially injection molding, to prevent warping and deformation of the product caused by later crystallization. PET itself is a semi-crystalline material with a slow crystallization rate. The temperature drops rapidly during the molding process, which can easily cause the material system to be overcooled without crystallizati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L67/02C08L35/06C08F212/12C08F222/08C08F212/36C08F8/32C08F8/44
CPCC08L67/02C08F212/12C08F222/08C08F8/32C08F8/44C08L2205/24C08L35/06C08F212/36Y02P20/10
Inventor 尹华张师军袁浩张琦吕芸白弈青陈若石李长金侴白舸杨庆泉初立秋邵静波王宇韬
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com