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Low-VOC (volatile organic compound) content polycaprolactone resin and preparation method thereof

A polycaprolactone and content technology, which is applied in the preparation of low VOC content polycaprolactone resin, and in the field of low VOC content polycaprolactone resin, can solve the problem of reducing the total volatile organic content of polycaprolactone materials, volatile organic compounds Organic residues and other problems, to achieve the effect of low input cost, reduced odor substances, and low input cost

Pending Publication Date: 2022-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention adopts two stages of microwave vacuum to treat polycaprolactone, significantly reduces the total volatile organic content in polycaprolactone material, and solves the residual problem of volatile organic substances in polycaprolactone resin

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  • Low-VOC (volatile organic compound) content polycaprolactone resin and preparation method thereof

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preparation example Construction

[0015] The invention provides a method for preparing polycaprolactone resin with low VOC content. The preparation method comprises the following steps: pretreating polycaprolactone through a microwave vacuum two-stage devolatilizer, and then pretreating the pretreated polycaprolactone Made into pellets and blended with processing aids, extruded and granulated; wherein, the step of pretreatment in the microwave vacuum two-stage devolatilizer includes: first vacuum heat treatment, the vacuum degree is above -0.05MPa, and the treatment temperature The temperature is 30-55°C, the processing time is 10min-120min; then microwave heating is carried out, the heating time is 4-10min, the microwave power density is 10-50W / L, and the gas-solid ratio of the material is ≥4.

[0016] According to a specific embodiment of the present invention, the preparation method includes the following steps:

[0017] S1. The polycaprolactone is placed in a microwave vacuum two-stage devolatilizer for pr...

Embodiment 1～8

[0035] Polycaprolactone pellets (number average molecular weight 80,000, molecular weight distribution 1.62, Sinopec Baling Petrochemical Company) were placed in a microwave vacuum two-stage devolatilizer (MGZ-G10A, Qingdao Microway Microwave Innovation Technology Co., Ltd.) Among them, vacuum heat treatment was carried out first, and then microwave heating was carried out. The specific process parameters of each embodiment are shown in Table 1. Prepare polycaprolactone granules after pretreated polycaprolactone hot pressing into sheet; Afterwards prepare polycaprolactone granules, processing aid (1:1 antioxidant 1010 and antioxidant 168 ) into a high-speed mixer, and stir for 3 minutes at a speed of 300 rpm to fully mix the components; then add the above-mentioned mixture from the main material inlet, and mix it through BUSS within the range of 120°C to 150°C Unit (MKD-30, Switzerland BUSS company), under the condition of keeping vacuum degree-0.08MPa, extrusion granulation o...

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Abstract

The invention belongs to the field of polycaprolactone resin, and relates to low-VOC (volatile organic compound) content polycaprolactone resin and a preparation method thereof. The preparation method comprises the following steps: pretreating polycaprolactone through a microwave vacuum two-stage devolatilization device, then preparing the pretreated polycaprolactone into granules, blending the granules with a processing aid, and carrying out extrusion granulation; wherein the pretreatment of the microwave vacuum two-stage devolatilization device comprises the following steps: firstly, carrying out vacuum heat treatment under the conditions that the vacuum degree is more than-0.05 MPa, the treatment temperature is 30-55 DEG C and the treatment time is 10-120 minutes; and then microwave heating is conducted, the heating time is 4-10 min, the microwave power density is 10-50 W / L, and the gas-solid ratio of the materials is larger than or equal to 4. The total volatile organic compounds and odor of the polycaprolactone resin can be remarkably reduced, the defects in the prior art are well overcome, the operation process is simple and reliable, the input cost is low, and the polycaprolactone resin is suitable for the fields of high-grade automotive upholstery, medical and food packaging materials and the like with high environmental protection requirements.

Description

technical field [0001] The invention belongs to the field of polycaprolactone resins, and in particular relates to a preparation method of polycaprolactone resin with low VOC content and the polycaprolactone resin with low VOC content prepared by the method. Background technique [0002] Polycaprolactone (Polycaprolactone, PCL), also known as polyε-caprolactone, is a high molecular organic polymer formed by ring-opening polymerization of ε-caprolactone monomer under the catalysis of a metal anion complex catalyst. conditions, different molecular weights can be obtained. Its appearance is white solid powder, non-toxic and insoluble in water. PCL has good biocompatibility, good organic polymer compatibility, and good biodegradability. It can be used as a cell growth support material and is compatible with a variety of conventional plastics. 6-12 in the natural environment Months can be completely degraded. In addition, PCL also has good shape memory temperature control prop...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K5/526C08K5/134
CPCC08K5/526C08K5/1345C08L67/04
Inventor 康鹏石胜鹏蔡涛高达利初立秋李杰金滟
Owner CHINA PETROLEUM & CHEM CORP