Lignin composite polyester material and preparation method thereof
A technology of compounding polyester and lignin, which is applied in the field of ecological environment materials and natural polymer materials, and achieves the effect of simple process, low cost and cost reduction
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Embodiment 1
[0020] A preparation method of lignin composite polyester material, comprising the steps of:
[0021] 1). Lignosulfonate (provided by the Key Laboratory of Cellulose Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, the following examples are the same) and polybutylene succinate (provided by China Anqing Hexing Chemical Co., Ltd., heavy The average molecular weight is 1.29×10 5 , the following examples are the same) with a mass ratio of 1:19, select lignosulfonate and polybutylene succinate, and initially mix lignosulfonate and polybutylene succinate to obtain blends;
[0022] 2). Then the blend was banburyed in an internal mixer (China Changzhou Suyan Technology Co., Ltd., the same as the following examples); the temperature was 130°C, the rotation speed was 78rpm (rev / min), and the time was 15 minutes to obtain a solid mixture ;
[0023] 3). Then, the solid mixture after banburying is subjected to hot-compression composite molding on a hot press (T...
Embodiment 2
[0026] A preparation method of lignin composite polyester material, comprising the steps of:
[0027] 1). According to the mass ratio of lignosulfonate and polybutylene succinate as 1:9, select lignosulfonate and polybutylene succinate, and combine lignosulfonate and polybutylene succinate Butylene succinate is initially mixed to obtain a blend;
[0028] 2). Then banbury the blend in an internal mixer; the temperature is 130°C, the rotation speed is 78rpm, and the time is 15 minutes to obtain a solid mixture;
[0029] 3). Then the solid mixture after banburying is subjected to thermocompression composite molding on a hot press: the temperature is 120°C, the pressure is 20MPa, and the time is 10 minutes; the hot-pressed film material is vacuum-dried at 50°C for 42 Hours to remove moisture, to obtain lignin composite polyester material.
[0030] According to market research, the current prices of PBS and calcium lignosulfonate are 35,000 yuan / ton and 2,300 yuan / ton respectivel...
Embodiment 3
[0032] A preparation method of lignin composite polyester material, comprising the steps of:
[0033] 1). According to the mass ratio of lignosulfonate and polybutylene succinate as 1: 4, select lignosulfonate and polybutylene succinate, and combine lignosulfonate and polybutylene succinate Butylene succinate is initially mixed to obtain a blend;
[0034] 2). Then banbury the blend in an internal mixer; the temperature is 130°C, the rotation speed is 78rpm, and the time is 15 minutes to obtain a solid mixture;
[0035] 3). Then the solid mixture after banburying is subjected to thermocompression composite molding on a hot press: the temperature is 120°C, the pressure is 20MPa, and the time is 10 minutes; the hot-pressed film material is vacuum-dried at 50°C for 42 Hours to remove moisture, to obtain lignin composite polyester material.
[0036] According to market research, the current prices of PBS and calcium lignosulfonate are 35,000 yuan / ton and 2,300 yuan / ton respective...
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