Production process of waterproof willow

A production process and willow technology, applied in the field of willow handicrafts, can solve the problems affecting the use and beauty, affecting the bonding effect, poor paint adhesion, etc., and achieve the effects of excellent mechanical properties, excellent waterproof performance, and improved stability.

Active Publication Date: 2021-11-30
阜南县猛发工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, willow itself is not waterproof, and will rot after long-term immersion in water, which will affect its use and appearance. It is often coated with waterproof paint on its surface to enhance waterproofing performance, but its poor adhesion to paint affects the bonding effect

Method used

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  • Production process of waterproof willow

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Experimental program
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Effect test

Embodiment 1

[0022] A kind of production technology of waterproof willow, comprises the steps:

[0023] Step S1, adding KH550 into dichloromethane, stirring at a high speed for 15 minutes, raising the temperature to 45°C, adding willow, soaking for 1 hour, filtering and drying to obtain treated willow;

[0024] Step S2, place the treated willow in a vacuum pressurized tank, pressurize after vacuuming, pump in the composition during the pressurization process, pressurize to 0.5MPa, keep the pressure until the pressure drops to 0MPa, and pressurize again to 0.5MPa, keep warm for 10min, repeat 3 times, and make strengthened willow;

[0025] Step S3: Heat the polyether diol N-220 to 110°C at -0.10MPa, heat and dehydrate for 3h, then slowly add 2,4-toluene diisocyanate dropwise, and control the temperature of the system at 40°C during the dropping process. After the dropwise addition, the temperature was raised to 75°C, reacted for 3 hours, and cooled to room temperature after the reaction, to...

Embodiment 2

[0030] A kind of production technology of waterproof willow, comprises the steps:

[0031] Step S1, adding KH550 into dichloromethane, stirring at a high speed for 15 minutes, raising the temperature to 45°C, adding willow, soaking for 1 hour, filtering and drying to obtain treated willow;

[0032] Step S2, place the treated willow in a vacuum pressurized tank, pressurize after vacuuming, pump in the composition during the pressurization process, pressurize to 0.5MPa, keep the pressure until the pressure drops to 0MPa, and pressurize again to 0.5MPa, keep warm for 10min, repeat 3 times, and make strengthened willow;

[0033] Step S3: Heat the polyether diol N-220 to 110°C at -0.10MPa, heat and dehydrate for 3h, then slowly add 2,4-toluene diisocyanate dropwise, and control the temperature of the system at 40°C during the dropping process. After the dropwise addition, the temperature was raised to 75°C, reacted for 3 hours, and cooled to room temperature after the reaction, to...

Embodiment 3

[0038] A kind of production technology of waterproof willow, comprises the steps:

[0039] Step S1, adding KH550 into dichloromethane, stirring at high speed for 15 minutes, raising the temperature to 50°C, adding willow, soaking for 1 hour, filtering and drying to obtain treated willow;

[0040] Step S2, place the treated willow in a vacuum pressure tank, pressurize after vacuuming, pump the composition during the pressurization process, pressurize to 1.0MPa, keep the pressure until the pressure drops to 0.1MPa, and pressurize again To 1.0MPa, keep warm for 10min, repeat 3 times, and make strengthened willow;

[0041]Step S3: Heat the polyether diol N-220 to 110°C at -0.10MPa, heat and dehydrate for 3h, then slowly add 2,4-toluene diisocyanate dropwise, and control the temperature of the system at 45°C during the dropping process. After the dropwise addition, the temperature was raised to 75°C, reacted for 3 hours, and cooled to room temperature after the reaction to prepare...

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Abstract

The invention relates to a production process of waterproof willow.The production process comprises the following steps: S1, adding a silane coupling agent into dichloromethane, stirring at a high speed for 15 minutes, heating to 45-50 DEG C, adding willow, soaking for 1 hour, filtering and drying to obtain treated willow; and S2, strengthening the treated willow to obtain strengthened willow; and coating the surface of willow with a prepared mixture, and forming the waterproof willow. Willow is soaked with the silane coupling agent, puffing of willow fibrils is promoted, the coating can be easily combined with willow fibers, the coating stability is improved, the prepared two-component oily polyurethane coating has excellent waterproof performance, no organic solvent is added in the preparation process, and the requirement for environmental protection is met; and finally, the waterproof willow with a waterproof function and excellent mechanical properties is prepared.

Description

technical field [0001] The invention belongs to the technical field of willow handicrafts, and in particular relates to a production process of waterproof willow. Background technique [0002] The willow bark is dark gray and black, the skin groove is wide, the heartwood is light red, the sapwood is dark white, and the annual rings are clear. The wood structure is fine, soft, smooth after polishing, flammable, and has slightly poor anti-corrosion ability. Whitewood width varies with growing conditions and is light beige in color. Its heartwood is the opposite in color, ranging from reddish brown to brownish gray. Willow has a fine, even grain, although usually straight, sometimes cross-grained, or rounded. [0003] However, willow itself does not have waterproof performance. After being soaked in water for a long time, it will rot, which will affect its use and appearance. It is often coated with waterproof paint on its surface to enhance its waterproof performance, but i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/50B27K3/52C09D175/08C09D7/65C09D7/20
CPCB27K3/08B27K3/50B27K3/52C09D175/08C09D7/65C09D7/20C08L57/02
Inventor 李明李东猛
Owner 阜南县猛发工艺品有限公司
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