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Flame-retardant neosinocalamus affinis and cryptomeria fortunei composite board manufacturing method

A manufacturing method and composite board technology, applied in the direction of manufacturing tools, chemical instruments and methods, and other plywood/plywood appliances, can solve the problem of low mechanical indicators such as compressive strength along the grain, flexural strength, and flexural modulus of elasticity. And problems such as low hardness and low processing efficiency, to achieve the effect of improving the appearance, improving the safety factor and reducing labor costs

Inactive Publication Date: 2017-07-04
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cedar has long been the main commercial material, but its material is light and soft, its strength and hardness are low, it is not wear-resistant, and its mechanical indicators such as compressive strength along the grain, flexural strength, and flexural modulus of elasticity are low.
Cizhu is a small-diameter bamboo with little difference in diameter. The strength of the fiber direction is comparable to that of most tropical hardwoods. Its tensile strength is about 25 times that of fir. It has straight dry shape, high strength and high hardness. , good toughness, strong wear resistance, good splitting performance, and easy to disintegrate, but also has the disadvantages of small diameter, low yield, bamboo joints, and low processing efficiency.
Cizhu is widely distributed in the southwestern provinces of China. This kind of bamboo species with smaller bamboo diameter and thinner bamboo wall is often used as pulp raw materials for papermaking, and is also used to make bamboo handicrafts. The application field is narrow

Method used

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  • Flame-retardant neosinocalamus affinis and cryptomeria fortunei composite board manufacturing method
  • Flame-retardant neosinocalamus affinis and cryptomeria fortunei composite board manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Compassionate Bamboo Timber: Cut Cizhu into bamboo sections with a length of (50±2) CM, split the bamboo sections longitudinally into bamboo strips with a string length of (10±2)MM, and cut the bamboo sections with a bamboo knife. Shave off the green and bamboo yellow, pre-press for 4 minutes on a hot-pressing machine with a set hot-pressing temperature of 100°C and a pressure of 8 MPa, and weave the hot-pressed bamboo strips in a horizontal and vertical manner to make a length and width of (50 ±2) CM bamboo mat (such as figure 1 shown).

[0031] (2) Cedar lumber: rotary cut cedar logs into veneers with a thickness of 1MM and a length and width of (50±2)CM.

[0032] (3) Flame retardant treatment of materials: immerse the bamboo mat and cedar veneer in liquid flame retardant for 45 minutes, and dry them in a wood dryer until the moisture content is 11%. The ratio is: dicyandiamide: phosphoric acid: boric acid: sodium alkylsulfonate: pentaerythritol = 0.095: 0.102: ...

Embodiment 2

[0038] (1) Compassionate Bamboo Timber: Cut Cizhu into bamboo sections with a length of (50±2) CM, split the bamboo sections longitudinally into bamboo strips with a string length of (10±2)MM, and cut the bamboo sections with a bamboo knife. Shave off the green and bamboo yellow, pre-press for 5 minutes on a hot-pressing machine with a set hot-pressing temperature of 100°C and a pressure of 8 MPa, and weave the hot-pressed bamboo strips in a horizontal and vertical manner to make a length and width equal to (50 ±2) CM bamboo mat (such as figure 1 shown).

[0039] (2) Cedar lumber: rotary cut cedar logs into veneers with a thickness of 1MM and a length and width of (50±2)CM.

[0040] (3) Flame retardant treatment of materials: Soak bamboo mats and cedar veneers in liquid flame retardant for 45 minutes, and dry them in a wood dryer until the moisture content is 10%. The ratio is: dicyandiamide: phosphoric acid: boric acid: sodium alkylsulfonate: pentaerythritol = 0.095: 0.102:...

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Abstract

The invention relates to the technical field of composite materials, and specifically relates to a flame-retardant neosinocalamus affinis and cryptomeria fortunei composite board manufacturing method. The manufacturing method comprises the steps of neosinocalamus affinis sawing, cryptomeria fortunei sawing, material flame retardant treatment, glue mixing, material selection and sizing, standing and assembly, pre-pressing and hot-pressing, and cooling, edge cutting and modification. The neosinocalamus affinis using range is extended, and single-purpose performance of the neosinocalamus affinis as pulp production materials and caused environmental pollution are prevented. The board produced by the method is integrated with low-cost characteristic of the cryptomeria fortunei and high toughness characteristic of the neosinocalamus affinis, and has good mechanical property. In addition, the board produced by the method has good flame retardant property, and the method and basis are provided for production of flame-retardant wood substrate composite materials.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for manufacturing a flame-retardant cedar cedar composite board. Background technique [0002] Existing plywood has high requirements on wood quality, high consumption, high cost, but low utilization rate. In my country, as far as the existing timber resources are concerned, it is difficult to maintain the balance between the supply and demand of the plywood market regardless of quantity and quality. Due to the reduction of mature forest resources caused by unreasonable felling and the implementation of natural forest protection projects in my country in the past ten years, the imbalance between supply and demand of timber has become increasingly prominent, and the gap in timber supply has further increased. Cedar grows rapidly, is widely distributed, has a thick structure, and has a large volume and output. Cedar cedar has long been the main commercial mat...

Claims

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Application Information

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IPC IPC(8): D21J1/00D21J1/02B27K3/52B27K5/04B27D1/08B27D5/00B32B37/12B32B37/10B32B37/06
CPCD21J1/00B27D1/08B27D5/006B27K3/52B27K5/04B27K2240/30B32B37/06B32B37/10B32B37/12D21J1/02
Inventor 王燕高曹润泽张心怡
Owner SICHUAN AGRI UNIV
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