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Method to prepare straw fiber/PBAT (poly(butylene adipate-co-terephthalate)) composite based on radiation modification

A technology of straw fiber and composite materials, which is applied in the field of straw fiber/PBAT composite materials prepared after radiation improves the surface of straw fiber, and in the field of straw fiber/PBAT composite materials, which can solve the problems of poor tensile strength, serious environmental pollution, and low efficiency. Achieve the effects of improving interface compatibility, improving mechanical properties, and expanding the scope of application

Active Publication Date: 2018-08-17
河南省科学院同位素研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PBAT has good elongation at break, which can reach 650% at room temperature, its tensile strength is poor, less than 17MPa, which seriously restricts the development and wide application of PBAT.
Physical modification is mainly used for pretreatment of raw materials, and the effect is not very obvious; chemical modification has problems such as serious environmental pollution, high energy consumption, and low efficiency.

Method used

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  • Method to prepare straw fiber/PBAT (poly(butylene adipate-co-terephthalate)) composite based on radiation modification
  • Method to prepare straw fiber/PBAT (poly(butylene adipate-co-terephthalate)) composite based on radiation modification
  • Method to prepare straw fiber/PBAT (poly(butylene adipate-co-terephthalate)) composite based on radiation modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Preparation of irradiated modified straw fibers

[0035] Dissolve 30g of silane coupling agent (KH-550) in 200ml of acetone solvent, spray evenly on 1.0kg of straw fibers dried at 80°C for 10h in a vacuum drying oven, and then dry them naturally with polyethylene. Vacuum packaging, irradiation treatment with 10kGy dose of gamma rays at normal temperature to obtain surface modified straw fibers.

Embodiment 2

[0036] Example 2: Preparation of irradiated modified straw fibers

[0037] Dissolve 20g of silane coupling agent (KH-550) in 150ml of acetone solvent, spray evenly on 1.0kg of straw fiber after drying in a vacuum oven at 70°C for 12h, and then dry it naturally with polyethylene. Vacuum packaging and irradiation treatment with 8kGy gamma rays at normal temperature to obtain surface modified straw fibers.

Embodiment 3

[0038] Embodiment 3: Preparation of straw fiber / PBAT composite material

[0039] (1) Raw material pretreatment: ①In a vacuum drying oven, dry PBAT and the irradiated modified straw fibers prepared in Example 1 at 80°C for 20h; According to the modified straw fiber according to the ratio in Table 1, 25g of stearic acid and 15g of antioxidant were stirred in a high-speed mixer at room temperature for 5min.

[0040] Table 1 Straw fiber / PBAT composites with different compositions

[0041]

[0042] (2) Twin-screw extrusion granulation

[0043]Put the mixed raw materials into a twin-screw extruder for extrusion and granulation. The extrusion conditions are 115°C for the first stage, 120°C for the second stage, 122°C for the third stage, 124°C for the fourth stage, and 120°C for the fifth stage. ℃, the six-stage temperature is 120℃, the head temperature is 115℃; the speed of the screw host is 4.0Hz, and the speed of the feeder is 3.0Hz.

[0044] (3) Sample preparation

[0045]...

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Abstract

The invention discloses a method to prepare straw fiber / PBAT (poly(butylene adipate-co-terephthalate)) composite based on radiation modification, wherein after a coupling agent is sprayed to straw fiber, the straw fiber is treated by means of radiation modification; the radiation modification process has the advantages of good simplicity, environmental friendliness, and availability for reaction at normal temperature; the straw fiber is treated via radiation modification, surface gloss of the straw fiber is decreased, and surface activity of the straw fiber is improved; by adding the straw fiber to PBAT resin, it is possible to effectively improve straw fiber and PBAT interfacial compatibility. The straw fiber-reinforced PBAG composite prepared herein has improved mechanical properties andhas a wider applicable range.

Description

technical field [0001] The invention belongs to the field of biological material degradation, relates to a straw fiber / PBAT composite material, in particular to preparing the straw fiber / PBAT composite material after radiation improving the surface of the straw fiber and its preparation process, and also belongs to the field of nuclear technology application. Background technique [0002] With the development of society and the continuous progress of science and technology, more and more petroleum-based plastic materials are consumed in the fields of industry, agriculture and construction, and the global environmental pollution problems brought about by the preparation and consumption of these materials are also becoming more and more serious At present, the State Environmental Protection Administration will vigorously develop green environmental protection materials as one of the main research directions in the 21st century. According to relevant statistics from the Europea...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L97/02C08K5/00C08K5/098C08K5/09C08K5/134C08K5/526D06M10/00D06M13/513D06M101/04
CPCC08K2201/014C08L67/02C08L2205/16D06M10/001D06M10/008D06M13/513D06M2101/04C08L97/02C08K5/00C08K5/098C08K5/09C08K5/1345C08K5/526
Inventor 杨明成张振亚张本尚田青亮刘树博张宏娜赵惠东樊红丽陈超赵梅红刘克波黄伦基周杰宋卫东王允
Owner 河南省科学院同位素研究所有限责任公司
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