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Polycaprolactone/poly (butylene succinate) composite material and preparation method thereof

A technology of polybutylene succinate and polybutylene succinate is applied in the field of polycaprolactone/polybutylene succinate composite material and the preparation field of the composite material, and can solve the problem of modification There are no relevant reports in the research on polycaprolactone, and the effect of reducing the tensile modulus, increasing the elongation at break, and not changing the tensile strength is achieved.

Inactive Publication Date: 2014-09-10
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no relevant report on the study of this type of coupling agent and polybutylene succinate modified polycaprolactone

Method used

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  • Polycaprolactone/poly (butylene succinate) composite material and preparation method thereof
  • Polycaprolactone/poly (butylene succinate) composite material and preparation method thereof
  • Polycaprolactone/poly (butylene succinate) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Polycaprolactone and polybutylene succinate pellets at 70 o C dry for three hours.

[0022] In parts by weight, send 70 parts of polycaprolactone and 30 parts of polybutylene succinate into the mixer, stir and mix at 30-80 rpm to obtain a two-component mixture; add 5 parts of MDI, and then use A twin-screw extruder performs melt blending at a temperature of 120-190° C. and a rotational speed of 20-80 rpm, extrudes a cast strip, and pelletizes to obtain a composite material of polycaprolactone and polybutylene succinate.

Embodiment 2

[0024] Put polycaprolactone and polybutylene succinate pellets at 70 o C dry for three hours.

[0025] In parts by weight, send 70 parts of polycaprolactone and 30 parts of polybutylene succinate into the mixer, stir and mix at 30-80 rpm to obtain a two-component mixture; add 5 parts of MDI, and then use dense The mixing machine melts and blends the materials at a temperature of 140° C. for 10-15 minutes to obtain a composite material of polycaprolactone and polybutylene succinate.

Embodiment 3

[0027] Put polycaprolactone and polybutylene succinate pellets at 80 o C dry for three hours.

[0028] In parts by weight, send 60 parts of polycaprolactone and 40 parts of polybutylene succinate into the mixer, stir and mix at 30-80 rpm to obtain a two-component mixture; add 3 parts of MDI, and then use two The screw extruder performs melt blending at a temperature of 140° C. and a rotational speed of 80 rpm, extrudes a cast belt, and granulates to obtain a composite material of polycaprolactone and polybutylene succinate.

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Abstract

A kind of polycaprolactone / polybutylene succinate composite material and its preparation method, it will account for the total amount of 55-85wt% polycaprolactone and 11-40wt% polybutylene succinate Put it into a mixer, stir and mix to obtain a two-component mixture; then add diphenylmethane diisocyanate to the mixture, and use a twin-screw extruder or internal mixer to melt and blend at a temperature of 120-190°C to obtain a composite material . The tensile strength of a small amount of polybutylene succinate composite material is improved, and the elongation at break is slightly reduced compared with polycaprolactone, but the reduction is not large. The composite can be used in industries such as toys, packaging, and electronics.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, in particular to a polycaprolactone / polybutylene succinate composite material and a preparation method of the composite material. Background technique [0002] At present, general-purpose materials are mainly concentrated in petroleum-derived materials, and the problem of "white" garbage is increasing day by day, causing energy crisis and environmental pollution that cannot be ignored. The development of potential new packaging materials has become a research hotspot in both academic and industrial circles. Aliphatic polyesters, such as polycaprolactone (PCL) and polyglycolic acid (PGA), have good biocompatibility and degradability, and are widely used in many fields of biomedicine. [0003] Polycaprolactone (PCL) is a good biodegradable material and medical material, and has always been a research hotspot. In recent years, with the strengthening of people's awareness of environmental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/02C08K5/29
Inventor 李良钊宋国林唐国翌
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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