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Preparation method of straw-plastic composite plate

A composite type and composite material technology, applied in the field of preparation of straw-plastic composite boards, can solve problems such as inability to eliminate damage, poor operability, complex process, etc., achieve strong mechanical properties and waterproof performance, save straw and plastic, and simple process Effect

Active Publication Date: 2015-06-03
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

People have also carried out some improvements and researches on this, and some have applied for patents. For example, the Chinese patent (the authorized announcement number is CN101747550B) discloses a fiber-reinforced straw-plastic composite cabinet board by molding method and its preparation method. The straw-plastic material is pressed into a plate by the method, and melamine is still used in this method, which still cannot eliminate the harm to the human body. At the same time, the method is complicated in process and poor in operability.

Method used

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  • Preparation method of straw-plastic composite plate

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: choose poplar wood flour to be straw raw material;

[0023] The preparation method of this straw-plastic composite board comprises the following steps:

[0024] (1) Grinding raw materials: crush and grind poplar wood powder with mechanical equipment into a powder with a particle size of 80 mesh; dry to a water content of 4%; crush and grind calcium carbonate powder with a mechanical device into a powder with a particle size of 400 mesh; dry to a water content of 2%;

[0025] (2) Preparation of modified straw powder:

[0026] Weigh 2000g of the poplar wood powder obtained in the step (1) according to the proportion by weight, put it into a high-speed mixer, heat up to 130°C, then add 2000g of calcium carbonate powder and 100g of preservative chromium copper arsenate, at a speed of 360 Mix under rpm, the mixing time is 15 minutes, to obtain modified straw powder;

[0027] (3) Preparation of straw-plastic composite material: Weigh 4000g of the modified str...

Embodiment 2

[0029] Embodiment 2: choose wheat straw powder as straw raw material;

[0030] The preparation method of this straw-plastic composite board comprises the following steps:

[0031] (1) Grinding raw materials: crush and grind wheat straw powder with mechanical equipment into a powder with a particle size of 60 mesh; 3%;

[0032] (2) Preparation of modified straw powder:

[0033] Weigh 2200g of the wheat straw powder obtained in step (1) according to the proportion by weight, put it into a high-speed mixer, heat up to 90°C, then add 2200g of calcium carbonate powder and 60g of preservative chromium copper arsenate, at a speed of 400 Mix under rpm, and the mixing time is 25 minutes to obtain modified straw powder;

[0034] (3) Preparation of straw-plastic composite material: Weigh 4400g of the modified straw powder obtained in step (2) and 4000g of the plastic masterbatch according to the weight ratio, and plasticize and compound the modified straw powder and the plastic master...

Embodiment 3

[0036] Embodiment 3: choose rice straw powder as straw raw material;

[0037] The preparation method of this straw-plastic composite board comprises the following steps:

[0038] (1) Grinding raw materials: crush and grind the rice straw powder into a powder with a particle size of 100 mesh with mechanical equipment; 2%;

[0039] (2) Preparation of modified straw powder:

[0040] Weigh 1800g of the rice straw powder obtained in step (1) according to the proportion by weight, put it into a high-speed mixer, heat up to 150°C, then add 1600g of wollastonite powder and 200g of preservative chromium copper arsenate, at a speed of 450 Mix under rpm, and the mixing time is 30 minutes to obtain modified straw powder;

[0041] (3) Preparation of straw-plastic composite material: Weigh 3600g of the modified straw powder obtained in step (2) and 5000g of the plastic masterbatch according to the weight ratio, and plasticize and compound the modified straw powder and the plastic masterb...

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Abstract

The invention relates to a preparation method of a straw-plastic composite plate. The preparation method comprises steps as follows: (1), grinding of raw materials; (2), preparation of modified straw powder; (3), preparation of a modified straw-plastic composite material; (3), profile assembly and the like. With the adoption of the preparation method, the modified straw-plastic composite material is added to a hollow plate and is tightly compacted, so that the straw-plastic composite plate is obtained. The method is simple in process and high in operability; chromated copper arsenate is adopted as a preservative, and the straw-plastic composite plate has the characteristics of cleanness, absence of odor and the like; the preservative alkaline copper quaternary does not contain chemical substances such as arsenic, chromium and the like, does not have adverse effects on the environment and cannot harm human, livestock, fish or plant; the straw-plastic composite plate prepared with the method saves straw plastics, reduces the cost, is free of the environmental pollution, is environment-friendly, does not have any harm to a human body, and is suitable for wide commercial popularization; meanwhile, the recycled waste straw can be adopted, and further, the cost is greatly reduced.

Description

technical field [0001] The invention relates to a method for preparing a straw-plastic composite plate. Background technique [0002] At present, with the improvement of people's living standards, boards have a large market in the home decoration industry; there are various types of boards on the market, such as fire-resistant boards, painted boards, PVC molded blister boards, moisture-proof particle boards, etc., and people The quality requirements for the boards used to make home cabinets or floors are also getting higher and higher, and more and more attention has been paid to whether the boards used pollute the environment and are harmful to the body. In addition to solid wood boards, most of the boards currently use density boards or particle boards as core materials. Particle boards are made of hot-pressed melamine-impregnated paper paste, which is very harmful to the human body. People have also carried out some improvements and researches on this, and some have appl...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08L97/02C08K3/26C08K3/24C08K3/34C08K3/36
Inventor 张文涛刘亦良朱马陈集双
Owner NANJING UNIV OF TECH
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