A handheld soil fixed-point disinfection device for a crop growth period is provided. The device includes a top-opened barrel, the barrel being internally divided into a liquid storage chamber and an assembly chamber; a plurality of support rods fixed at a bottom of the barrel; a target ring fixed at bottoms of the plurality of support rods and configured to contact a ground fixed point; a needle provided between the plurality of support rods and capable of being inserted into soil through the target ring to inject a fumigant liquid; and a force accumulation mechanism provided on the barrel and configured to eject the needle. The device not only is more labor-saving and simpler in use by ejecting the piercing needle, but also can be adapted for different people and used more comfortably through the handle with an adjustable angle and an adjustable length.
Disclosed are a hollow artificial log and a manufacturing method thereof. The method includes: splicing and fixing veneers along a length direction and a width direction, respectively, to obtain a spliced veneer; gluing the spliced veneer on one side to obtain a glued veneer; subjecting the glued veneer to winding and forming around a forming die along a length direction of the glued veneer to obtain a formed body; subjecting the formed body to hot-pressing curing in a hot-pressing die to obtain a cured body; and taking out the cured body from the forming die to obtain the hollow artificial log; wherein an adhesive for the gluing comprises a melamine-urea-formaldehyde copolycondensation resin, and the forming die is a cylinder.
The present disclosure provides a method for recycling urea-formaldehyde (UF) from a wood-based panel. In the present disclosure, the UF is depolymerized by an ultrasonic treatment, and depolymerized UF can be reused for UF manufacture and wood-based panel production. The recycled and treated UF can be repeatedly used in wood-based panel manufacture without affecting performances of the wood-based panel. UF-glued wood-based panels can be recycled, and a recycled wood-based panel raw material can replace at least 50% of a non-recycled wood-based raw material for particle board production without affecting performances of the wood-based panel.
C08L 61/24 - Polymères de condensation obtenus uniquement à partir d'aldéhydes ou de cétones avec des composés contenant de l'hydrogène lié à l'azote d'aldéhydes avec des composés acycliques ou carbocycliques avec l'urée ou la thiourée
C08L 97/02 - Matériau lignocellulosique, p. ex. bois, paille ou bagasse
4.
Series Type Continuous Automatic ENF-Grade Plywood Production Line And Production Method
A series type continuous automatic ENF-grade plywood production line and a production method is set forth. The production line is at least composed of three serially connected independent process units with the same processing flow, which are core initialization, thickening circulation and product setting. Each process unit at least includes the following procedures: surface sanding, gluing, automatic lay-up, constant-thickness hot pressing, board overturning and cooling, defect scanning and repairing. The thickening circulation process unit can form a ring-shaped production line through a loop formed by the above procedures, or can form a linear production line by repeatedly extending above procedures. The present disclosure has the beneficial effects that the procedures of aging and prepressing of veneers, which lead to the stagnation of production process, are omitted, and the main obstacles in the continuous and automatic production of plywood are overcome.
A device for a creep test and a test system and a method using the device are provided. The device for the creep test includes a device frame, a test piece clamp, a load loading mechanism and linear displacement sensors. A test piece is arranged in a middle of the test piece clamp. A first end of the test piece clamp is a fixed end, a position of the fixed end is unchanged relative to the device frame. A second end of the test piece clamp is a movable end. The load loading mechanism includes a pulley block and a load. A system for a tensile and compressive creep test includes a box body which is sealable. The box body is provided with a box door which is provided with a constant temperature and humidity device. The device for the creep test is arranged in the box body.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
The present disclosure provides a modified deodorant urea-formaldehyde (UF) resin and use thereof, as well as a particleboard and a preparation method thereof, and relates to the technical field of wood-based panels. Raw materials for preparing the modified deodorant UF resin provided by the present disclosure include: melamine-modified UF resin (MUF), aluminum ammonium sulfate dodecahydrate, wax, and water. Raw materials for preparing the MUF include: urea, formaldehyde, and melamine. When the modified deodorant UF resin provided by the present disclosure is used to prepare wood-based panels, the aluminum ammonium sulfate dodecahydrate losses 12 crystal water during hot pressing to form a metastable structure NH4Al(SO4)2, in which NH4+ can react with the formaldehyde to reduce formaldehyde emission, and NH4+ and A13+ can absorb hydroxyl groups of organic substances to form hydrogen bonds to reduce odor of the wood-based panels.
B27N 3/00 - Fabrication d'objets sensiblement plats, p. ex. panneaux, à partir de particules ou de fibres
C08L 97/02 - Matériau lignocellulosique, p. ex. bois, paille ou bagasse
B27N 3/02 - Fabrication d'objets sensiblement plats, p. ex. panneaux, à partir de particules ou de fibres à partir de particules
C08L 61/30 - Polymères de condensation obtenus uniquement à partir d'aldéhydes ou de cétones avec des composés contenant de l'hydrogène lié à l'azote d'aldéhydes avec des composés hétérocycliques et des composés acycliques ou carbocycliques
A method for organically planting Dendrobium, including using a planting medium in the epiphytic planting step of Dendrobium. The raw materials of planting medium include fermented powder of Dendrobium candidum leaves and sawdust; a method for preparing the fermented powder of Dendrobium candidum leaves is as follows: cutting Dendrobium candidum leaves into small pieces and mashing the small pieces of Dendrobium candidum leaves to obtain materials to be fermented, and then adding liquid medium to the materials to be fermented to obtain fermentation system; sterilizing the fermentation system, adding fermentation bacteria to the fermentation system to obtain a mixture, fermenting and filtering the mixture to obtain post-culturing fermentation broth and fermented products of Dendrobium candidum leaves, dewatering and crushing the fermented products of Dendrobium candidum leaves to obtain fermented powder of Dendrobium candidum leaves.
The present disclosure relates to the technical field of Gastrodia elata planting, in particular to an organic planting method of G. elata, including the process of mycelia colonized material preparation: cutting a branch of Quercus acutissima into bars; cutting out fish scale openings on the bars to obtain bars with the fish scale openings; successively soaking the bars with the fish scale openings in boiling water and a growth-promoting solution to obtain bars after growth promotion treatment; and putting Amillariella mellea spawns and an inoculation substrate into each fish scale opening of the bars after the growth promotion treatment to obtain a mycelia colonized material. The growth-promoting solution and the inoculation substrate are prepared by treatment of fresh G. elata stalks with Bacillus pumilus and hot-dip extraction treatment in ethanol.
The present disclosure relates to the technical field of resource recycling and provides a processing method for a waste oriented strand board and waste oriented wood chips, and an oriented strand board preparation method thereof. The processing method for a waste oriented strand board provided in the present disclosure includes the following steps: softening a waste oriented strand board to obtain a softened waste oriented strand board; and flaking the softened waste oriented strand board pieces using a disc flaker to obtain waste oriented wood chips. According to the present disclosure, the waste oriented strand board is softened first to be chipped readily. It is specified in the present disclosure that the disc flaker is used such that relatively intact wood chips can be obtained.
B27L 11/02 - Fabrication de copeaux, particules, poudre, ou produits similaires, à partir de boisOutils à cet effet de copeaux de bois ou de particules similaires
B27N 3/00 - Fabrication d'objets sensiblement plats, p. ex. panneaux, à partir de particules ou de fibres
B27N 3/02 - Fabrication d'objets sensiblement plats, p. ex. panneaux, à partir de particules ou de fibres à partir de particules
10.
Method of preparing environmentally-friendly water-resistant tannin-based wood adhesive
An environmentally-friendly epoxy tannin resin based polyurea adhesive and its preparation method are provided. The method includes preparing the environmentally-friendly water-resistant tannin-based wood adhesive by graft copolymerization of epoxy tannin, which is obtained by epoxidation of tannin using epoxy chloropropane, with triethylene tetramine and subsequent deamination reaction of them with urea.
A plant protein-furfuryl alcohol wood adhesive and a preparation method thereof are disclosed. The adhesive according to the disclosure is prepared from raw materials comprising, in parts by weight, 10 to 15 parts of a plant protein, 10 to 25 parts of furfuryl alcohol, 4 to 8 parts of water, 1 to 6 parts of a catalyst, and 0 to 20 parts of an additive.
C11B 1/10 - Production des graisses ou huiles à partir de matières premières par extraction
C11B 1/06 - Production des graisses ou huiles à partir de matières premières par pressage
C11C 1/02 - Préparation des acides gras à partir de graisses, huiles ou ciresRaffinage des acides gras à partir de graisses ou huiles
A61K 8/92 - Huiles, graisses ou ciresLeurs dérivés, p. ex. produits d'hydrogénation
A61K 31/201 - Acides carboxyliques, p. ex. acide valproïque ayant un groupe carboxyle lié à une chaîne acyclique d'au moins sept atomes de carbone, p. ex. acides stéarique, palmitique ou arachidique ayant une ou deux doubles liaisons, p. ex. acides oléique ou linoléique
C11B 3/08 - Raffinage des graisses ou huiles par réaction chimique avec des agents oxydants
C11B 3/12 - Raffinage des graisses ou huiles par distillation
13.
Macadamia integrifolia whitening extract and preparation method thereof
Macadamia integrifolia green peel using an ethanol solution as an extraction solvent to obtain a crude green peel extract; then enzymatically treating the crude green peel extract using a snailase to obtain a enzymatic hydrolysate; finally extracting the enzymatic hydrolysate using a petroleum ether, and taking an aqueous phase to obtain a green peel extract; S2: carrying out a hot extraction on crushed Sichuan lovase rhizome decoction pieces using an ethanol solution as an extraction solvent to obtain a Sichuan lovase rhizome extract; S3: dispersing the green peel extract and the Sichuan lovase rhizome extract in water to obtain a whitening extract.
2. Odd number of layers (three or more layers) of palm barks that are impregnated by the resin adhesive solution and are hot-pressed to the composite material. Hot-pressed parameters are as follows: the temperature is 150-180° C. the unit pressure is 0.8-1.5 MPa, and the time is 10-30 s/mm.
A cross-laminated timber (CLT) decorative panel and a connecting device thereof are provided, and belongs to the field of construction materials. The CLT decorative panel includes a first decorative layer, a buffer layer, a CLT layer and a second decorative layer, where the first decorative layer, the buffer layer, the CLT layer and the second decorative layer are sequentially arranged from top to bottom, and the buffer layer is internally provided with a non-Newtonian fluid. The connecting device includes a support body and a connecting block arranged on the support body; the support body has a rectangular solid structure; a cross section of the support body is square with a side length the same as a thickness of the decorative panel; the connecting block is fit with the connecting groove.
E04B 1/70 - Séchage ou maintien de la siccité, p. ex. par ventilation d'air
E04C 2/26 - Éléments de construction de relativement faible épaisseur pour la construction de parties de bâtiments, p. ex. matériaux en feuilles, dalles ou panneaux caractérisés par des matériaux spécifiés composés de matériaux couverts par plusieurs des groupes , , ou de matériaux couverts par un de ces groupes avec un matériau non spécifié dans l'un de ces groupes
B32B 3/06 - Caractérisés par des caractéristiques de forme en des endroits déterminés, p. ex. au voisinage des bords pour lier les couches ensembleCaractérisés par des caractéristiques de forme en des endroits déterminés, p. ex. au voisinage des bords pour attacher le produit à quelque chose d'autre p. ex. à un support
B32B 3/26 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche continue dont le périmètre de la section droite a une allure particulièreProduits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche comportant des cavités ou des vides internes
B32B 21/04 - Produits stratifiés composés essentiellement de bois, p. ex. une planche de bois, une feuille de placage, une feuille de bois aggloméré comprenant du bois comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
brevets