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Modification method of soft timber and special device

A kind of wood and soft technology, applied in cork treatment details, impregnated wood, wood impregnation, etc., can solve the problems of easy pollution of the environment, low use value of wood, and increased production costs, so as to meet environmental protection requirements and increase use value , cost reduction effect

Inactive Publication Date: 2012-05-09
何光临 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to the use of catalysts, the production cost is increased
[0003] At the same time, because the selected dyes are not soluble in polymer monomers, when various colors are required, only paints of different colors or surface dyeing can be carried out, which is easy to pollute the environment and the use value of wood is low

Method used

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  • Modification method of soft timber and special device
  • Modification method of soft timber and special device
  • Modification method of soft timber and special device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Put 20kg of PVC and 100kg of solvent tetrahydrofuran into the reaction kettle, and fully stir at 60°C to dissolve all the PVC to make a PVC true solution. Put it into the liquid storage tank 1 for later use. The liquid storage tank 1 is insulated with heat transfer oil to keep the temperature in the liquid storage tank not higher than 60°C.

[0035] (2) The hardness of the end face is 19.5MPa, and the density is 0.283g / cm 3 0.5M 3 Pack the Paulownia profile into the profile basket 12, then put the basket with the Paulownia profile into the cylinder 2, and seal between the upper cover 3 and the cylinder 2 to form an airtight container. After sealing, the heat transfer oil enters the heating jacket 15 from the heat transfer medium inlet 13 and flows out from the heat transfer medium outlet 17 to heat the cylinder so that the temperature inside the airtight container is not higher than 60°C. At the same time, open the vacuum pump The valve 5 and the vacuum pump 8 va...

Embodiment 2

[0038] (1) Put 10kg of PP, 90kg of solvent xylene, and 10g of phthalocyanine blue dye into the reaction kettle, stir fully at a temperature of 110°C to dissolve all the PP to make a true PP solution, and put it into a liquid storage tank for later use. The liquid storage tank is insulated with thermal oil.

[0039] (2) The hardness of the end face is 26.6MPa, and the density is 0.38g / cm 3 0.3M 3 The fir profiles are packed into profile baskets, and then the baskets containing the fir profiles are put into airtight containers. After sealing, the heat transfer oil enters the heating jacket from the inlet of the heat transfer medium and flows out from the outlet of the heat transfer medium to heat the cylinder so that the temperature inside the airtight container is 110°C. The pressure was 7000 Pa, and after maintaining the above pressure for 0.5 hour, the vacuuming was stopped.

[0040] (3) The heat transfer oil traces the heat throughout the process to maintain the temperatu...

Embodiment 3

[0042] (1) Put 10kg of PC / ABS alloy and 110kg of solvent cyclohexanone into the reaction kettle, fully stir at 160°C to completely dissolve the PC / ABS alloy to form a PC / ABS true solution, and put it into a storage tank that is heated by heat transfer oil. Keep warm in the liquid tank for later use.

[0043] (2) The hardness of the end face is 19.5MPa, and the density is 0.283g / cm 3 0.5M 3 Put the Paulownia profile into the profile basket, and put the basket with the Paulownia profile into an airtight container. After sealing, the heat-conducting oil heats the cylinder so that the temperature inside the airtight container is 150°C. At the same time, vacuumize the inside of the airtight container to make the inner pressure of the airtight container 5000Pa. After maintaining the above pressure for 1.5 hours, stop vacuuming.

[0044] (3) The heat transfer oil traces the heat throughout the process to maintain the temperature in the cylinder. After stopping vacuuming, release t...

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Abstract

The invention discloses a modification method of a soft timber and a special device. The invention aims to provide a modification method of a soft timber and a special device which cause the timber to reach the hardness and the water and corrosion proof performance required through unstable phase separation of high molecules in the timber. The modification method comprises the following steps: placing profiles of the soft timber into a closed container, heating the closed container and simultaneously vacuum-pumping the inside of the closed container; stopping vacuum pumping, injecting dippingliquid into the closed container after pressure relief, adding incombustible gas into the closed container, carrying out pressure relief after 10-60 minutes are kept and vacuum-pumping again after the pressure is released to normal pressure; and stopping vacuum-pumping and taking the profiles from the closed container after the normal pressure is recovered to obtain improved profiles. In the method, the high molecule true solution is dipped into a void of the soft timber, and the high molecules generate unstable phase separation in timber fiber under specific pressure and temperature, so thatthe soft timber is more rigid, has the water and corrosion proof functions, thereby improving the user valve of the timber.

Description

technical field [0001] The invention relates to a modification method and special equipment for soft wood. Background technique [0002] At present, all countries in the world use the method of injecting polymer monomers into wood fibers to modify non-productive soft woods, such as fast-growing forests and paulownia, so that polymer monomers are polymerized in the fibers to produce so-called synthetic wood. . When using a polymer monomer for modification, a catalyst must be used as an initiator, which requires the monomer to be preferably in a liquid state, and at the same time, the boiling point of the monomer used must be limited, which is difficult to implement. If you want to use gaseous monomer, you need to pressurize, so you need to use high-pressure equipment, and the production is very dangerous. Therefore, only a few monomers can be impregnated. Also, due to the use of the catalyst, the production cost is increased. [0003] Simultaneously, because the dyestuff ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K3/10B27K3/34B27K7/00
Inventor 何光临金宗琴
Owner 何光临