Preparing method of heat-high-resistant type wood-imitation material

A wood-like material with high heat resistance technology, which is applied in the field of wood-like materials, can solve the problems of polylactic acid prone to thermal degradation, molecular chain breakage, and molecular weight reduction, so as to alleviate the embarrassment of wood shortage, reduce the fracture rate, and improve product use. good effect

Inactive Publication Date: 2019-01-04
淮安市冰青建设工程管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polylactic acid (PLA) and its composite materials are new polymer materials that are degradable and non-polluting. They have many advantages such as environmental protection and great market potential. They are gradually becoming a hot spot in material research and application. Low crystallinity leads to high temperature resistance, polylactic acid is prone to thermal degradation at high temperature and high shear, resulting in molecular chain breakage, molecular weight reduction, and performance degradation, which limits its application in many fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Preparation of polylactic acid

[0028] Extract corn raw materials, add pure lactic acid and calcium carbonate to ferment under the action of biocatalyst maltase, and obtain fermentation liquid; add sulfuric acid to the fermentation liquid, the volume percentage of sulfuric acid is 50%, filter after fully stirring, and evaporate the filtrate Concentrate and filter again to obtain lactic acid; lactic acid is refined, dehydrated and oligomerized, and pyrolyzed at high temperature to generate cyclic dimer lactide, and lactic acid is converted into lactide by a special concentration process, that is, the intermediate product reduces water Lactic acid is then ring-opened and polycondensed to form polylactic acid, and the obtained polylactic acid is dried for subsequent use.

[0029] 2) Preparation of high heat-resistant wood-like materials

[0030] Weigh 60 parts of polylactic acid, 6 parts of straw, 0.5 part of antioxidant, 20 parts of polycarbonate, and 10 parts of ACR...

Embodiment 2

[0032] 1) Preparation of polylactic acid

[0033] Extract wheat raw materials, add pure lactic acid and calcium carbonate to ferment under the action of biocatalyst glucoamylase, and obtain fermentation liquid; add sulfuric acid to the fermentation liquid, the volume percentage of sulfuric acid is 50%, filter after fully stirring, and evaporate the filtrate Concentrate and filter again to obtain lactic acid; lactic acid is refined, dehydrated and oligomerized, and pyrolyzed at high temperature to generate cyclic dimer lactide, and lactic acid is converted into lactide by a special concentration process, that is, the intermediate product reduces water Lactic acid is then ring-opened and polycondensed to form polylactic acid, and the obtained polylactic acid is dried for subsequent use.

[0034] 2) Preparation of high heat-resistant wood-like materials

[0035] Weigh 85 parts of polylactic acid, 10 parts of wheat straw, 1 part of antioxidant 330, 10 parts of polycarbonate, and ...

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Abstract

The invention belongs to the technical field of wood-imitation materials, and particularly relates to a preparing method of a heat-high-resistant type wood-imitation material. The method includes thesteps of weighing, by weight, 15-85 parts of polylactic acid, 1-10 parts of straw, 0.1-2 parts of antioxidant, 10-30 parts of polycarbonate and 5-15 parts of impact modifier, and placing all the components in a mixer-stirrer to be mixed at the mixing rotation speed of 50-60 r / min for the stirring time of 10-15 min; placing the mixed materials in a twin-screw extruder, and adding epoxy soybean oilin a liquid feed port of the twin-screw extruder to be extruded to prepare granules, wherein the temperature control parameters include the feeding section temperature of 152-155 DEG C, the compression section temperature of 168-173 DEG C, the nose temperature of 185-192 DEG C and the bush die temperature of 186-188 DEG C. The method is simple in production process, free of three-waste emission inthe production process, suitable for large-scale industrial production and good in economic benefit.

Description

technical field [0001] The invention belongs to the technical field of imitation wood materials, and in particular relates to a preparation method of high heat-resistant wood imitation materials. Background technique [0002] Imitation wood is a kind of craft technology. Using this technology, products that look similar to solid wood can be constructed. The visual effects of imitation wood and solid wood products are comparable, and the fake wood can be confused with the real one. Sun-dried imitation wood will not corrode and fade, let alone insects. It is environmentally friendly and solves the dilemma of wood shortage. Imitation wood is an excellent substitute for traditional plastic and wood. Nowadays, China's wood resources are extremely scarce and environmental problems are becoming more and more serious. Grim, imitation wood products have a bright future. [0003] In recent years, due to environmental protection requirements and shortage of petroleum resources, polyla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L97/02C08L69/00C08L33/04C08L91/00C08L23/08C08K5/375C08K5/13C08G63/08
CPCC08L67/04C08G63/08C08L2201/06C08L2201/08C08L2205/035C08L97/02C08L69/00C08L33/04C08L91/00C08K5/375C08L23/0853C08K5/13
Inventor 刘传礼
Owner 淮安市冰青建设工程管理有限公司
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