摘要:
The invention claims a flame-retardant and corrosion-resistant fiber bamboo substrate and a preparation method thereof. The preparation method comprises the following steps of: 1) cutting raw bamboo into bamboo filaments; 2) flame-retardant treatment: soaking the bamboo filaments prepared in Step 1) in aqueous solution of a flame retardant; 3) drying: drying the flame-retardant treated bamboo filaments at 55° C. to 65° C. until the absolute water content is not more than 12%; 4) carbonized pyrolysis: feeding the dried bamboo filaments into a carbonized pyrolysis kiln, to be high-temperature treated according to a pyrolysis gradient; and, 5) sequentially gumming, post-gumming drying, pressing, curing, maintaining and splitting to obtain a bamboo substrate. The bamboo substrate has high stability, no cracks on the product surface, enhanced corrosion resistance and excellent flame retardance, and may be used in various climate conditions and environments.
摘要:
A method of forming an article and associated article are provided. Multi-fiber cellulose strips are interacted with a bonding agent and layered in a plurality of layers, the layered cellulose strips collectively defining opposed major surfaces. A porous sheet member, interacted with a fire-retarding solution, is engaged with at least one of the major surfaces of the layered cellulose strips, such that the porous sheet member substantially covers the at least one major surface. The layered cellulose strips and the porous sheet member are collectively exposed to an actuating element, configured to actuate the bonding agent to facilitate cohesion of the layered cellulose strips and the porous sheet member, to form a board member, wherein the at least one major surface cooperates with the porous sheet member engaged therewith, in response to the actuating element, such that the porous sheet member forms a substantially smooth and uniform surface.
摘要:
Provided are adhesive materials for fire resistant applications, methods of using these adhesive materials on lignocellulosic and other like substrates, and composite materials including lignocellulosic substrates and these adhesive materials. In addition to being fire-resistant, the composites formed from the substrates and adhesive materials may be also durable to moisture. The adhesive materials may include at least one proteinaceous-containing material and at least one magnesium oxychloride material. Other materials may be present as well, in some embodiments. For example, an adhesive material may include a solvent or a vinyl polymer. In some embodiments, water may be used as a solvent and the adhesive material may be referred to as an aqueous adhesive material. Some examples of suitable vinyl polymers include but are not limited to polyvinyl alcohol (PVOH), polyvinyl acetate (PVAc) and vinyl acetate/ethylene (VAE).
摘要:
First, wood or bamboo is crushed to obtain wood powder with an average grain size of 5 μm to 100 μm. Next, the wood powder is put in a first mold, and a first compression molding step is carried out under the conditions that, for example, a temperature is 160° C. and a pressure is 30 MPa. Thus, a temporary molded body is obtained. Subsequently, the temporary molded body is immersed in a flame retardant and a surface of the temporary molded body is impregnated with the flame retardant. Thereafter, the temporary molded body is put in a second mold, and a second compression molding step is carried out under the conditions that, for example, a temperature is 200° C. and a pressure is 100 MPa. At this time, ingredients such as lignin and a hemicellulose are separated from the wood powder, and function as an adhesive. For this reason, pieces of crushed material are firmly bonded with each other so as to be integrated into a single body. Thus, a compression-molded product with a predetermined shape is obtained.
摘要:
The invention is a manufacturing process that allows solid interior and closet doors to be produced by molding wood composite materials. The doors produced will be a solid composite with decorative relief on both the face and back. The decorative relief can include both positive and negative design features and can be either simple or complex in appearance. The doors are manufactured by compressing and heating a mixture of wood or agricultural fiber and thermo-set resin between two molds. The resulting door is then removed from between the molds, trimmed to the finished size, and primed and painted. The composite used in the door can incorporate fire retardant additives to create a fire rated door. The composite in the door can be distributed so as provide for improved hinge and lockset retention.
摘要:
The invention relates to a flame-retardant mixture for lignocellulose composites having from 60 to 90% by mass of particulate or fibrous lignocellulose materials and from 40 to 10% by mass of a flame retardant concentrate immobilized on or in the particulate or fibrous lignocellulose materials as carriers. The flame retardants are boric acids or the salts thereof. Also, melamine resins and optionally synergistic agents and further additives may be present. The preparation of the flame-retardant mixture can be effected by a liquid impregnation process, a melt impregnation process and a liquid impregnation/solids mixing process. In the form of flame-retardant semifinished products and molding materials, the lignocellulose composites have high resistance to insect infestation, fungal infestation and mold infestation and high resistance to washing out of the flame-retardant mixture and are preferably suitable for applications in outdoor use in the building and leisure sector.
摘要:
The manufacture of zinc borate and calcium borate powders in a water slurry and drying those powders in a controlled manner such as to leave a desired residual of moisture content uniformly dispersed throughout the product produces a low dust, flowable material. This low dust material results in environmental and economic benefits to users of these preservative borates. The preferred amount of residual moisture is from 2 to 10 percent.
摘要:
Lignocellulosic-based woodfiber-plastic composite products containing a pesticidal amount of calcium borate is resistant to attack by wood destroying fungi and insects. The preferred calcium borates are the calcium polytriborates having a CaO:B2O3 molar ratio of about 2:3 and calcium hexaborates, having a CaO:B2O3 ratio of 1:3. Composites can be produced by combining the calcium borate with particles of the lignocellulosic material and the thermoplastic resin binder, and heating and extruding the resultant mixture through a die to form the composite product.
摘要翻译:含有杀虫剂量的硼酸钙的木质纤维素基木纤维复合材料抗木材破坏真菌和昆虫。 优选的硼酸钙是具有约2:3的CaO:B 2 N 3 O 3摩尔比的聚亚钙酸钙和具有CaO:B 2的六硼酸钙 3/3比例为1:3。 可以通过将硼酸钙与木质纤维素材料和热塑性树脂粘合剂的颗粒结合在一起,并通过模头加热和挤出所得混合物以形成复合产品来生产复合材料。
摘要:
Lignocellulosic-based woodfiber-plastic composite products containing a pesticidal amount of calcium borate is resistant to attack by wood destroying fungi and insects. The preferred calcium borates are the calcium polytriborates having a CaO:B2O3 molar ratio of about 2:3 and calcium hexaborates, having a CaO:B2O3 ratio of 1:3. Composites can be produced by combining the calcium borate with particles of the lignocellulosic material and the thermoplastic resin binder, and heating and extruding the resultant mixture through a die to form the composite product.
摘要翻译:含有杀虫剂量的硼酸钙的木质纤维素基木纤维复合材料抗木材破坏真菌和昆虫。 优选的硼酸钙是具有约2:3的CaO:B 2 N 3 O 3摩尔比的聚亚钙酸钙和具有CaO:B 2的六硼酸钙 3/3比例为1:3。 可以通过将硼酸钙与木质纤维素材料和热塑性树脂粘合剂的颗粒结合在一起,并通过模头加热和挤出所得混合物以形成复合产品来生产复合材料。
摘要:
In one embodiment, a fire retardant composite panel material is fabricated. A water-based slurry comprising partially soluble boric acid and borax pentahydrate solids is created. An adhesive used in the composite panel fabrication process is added to fibers. The water-based slurry is separately added to the adhesive and, after mixing, to the fibers. The composite panel produced thereby is also described.