High-transmittance cold-resistant toughening agent for polyester material and preparation method thereof
By blending high-transparency TPEE with PETG and using TPEE-g-MAH compatibilizer, the problems of easy cracking and decreased light transmittance of PET materials at low temperatures were solved, and a high-transparency cold-resistant toughening agent was prepared, which is suitable for the food packaging field.
CN122278145APending Publication Date: 2026-06-26SHENZHEN JUZHI CHUANGJING TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202610180571.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-09
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Existing PET materials are prone to cracking at low temperatures, and traditional toughening agents can reduce light transmittance, failing to meet the requirements for high-transparency ice cups.
Method used
A high-permeability, cold-resistant, and toughening agent was prepared by blending high-permeability TPEE with PETG and achieving nanoscale dispersion through structural homology and chemical bonding with TPEE-g-MAH compatibilizer, combined with plasticizer and nucleating agent.
Benefits of technology
With an impact strength of 110-150 kJ/m² at -30℃, light transmittance of over 90%, and haze of ≤2%, it possesses extreme low-temperature toughness and high light transmittance, making it suitable for the food packaging industry.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of toughening agents, in particular to a high-transmittance cold-resistant toughening agent for a polyester material and a preparation method thereof.The high-transmittance cold-resistant toughening agent is prepared from, by weight, 50-90 parts of PET, 10-40 parts of PETG, 1-10 parts of high-transmittance TPEE, 1-5 parts of TPEE-g-MAH, 0.3-6 parts of a composite plasticizer, 0.1-0.5 part of a nucleating agent and 0.1-0.5 part of an antioxidant. The preparation method comprises the following steps: drying the raw materials, premixing the auxiliaries, mixing the base material and the auxiliaries, performing melt extrusion, and cooling and pelletizing. Through the synergistic effect of the high-transmittance TPEE and the specific compatilizer TPEE-g-MAH, the technical problem of'transmittance reduction during toughening 'of a traditional toughening material is solved while nanoscale dispersion and firm interface combination are realized, the low-temperature impact strength of the material at-30 DEG C reaches up to 110-150kJ / m, meanwhile, the light transmittance is larger than or equal to 90%, the haze is smaller than or equal to 2%, and the high-transparency TPEE-g-MAH composite material is suitable for being used as a light-transmitting material. The method is especially suitable for PET products requiring high transparency and low-temperature impact resistance.
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