CN101619171A

CN101619171A - Bamboo scrap and waste plastic PE composite outdoor building material and application thereof

Info

Publication number: CN101619171A
Application number: CN200810068810A
Authority: CN
Inventors: 代绍君; 李大纲; 何强
Original assignee: Guizhou Xinjin Bamboo & Wood Products Co Ltd
Current assignee: Guizhou Xinjin Bamboo & Wood Products Co Ltd
Priority date: 2008-07-01
Filing date: 2008-07-01
Publication date: 2010-01-06

Abstract

The invention discloses a bamboo scrap and waste plastic PE composite outdoor building material, which is manufactured and formed by mixing 65 weight percent of bamboo scrap, 30 weight percent of waste plastic PE and 5 weight percent of auxiliary agent; and the manufacture forming process after the mixing comprises drying treatment, surface treatment, premixing, granulation, extrusion forming, cooling and cutting. The building material can be prepared into plates, vertical strips of which the shape of the section is a solid rectangle, hollow upright posts, polygonal sections of which the planes are provided with holes and the peripheries are provided with sawtooth and matching semicircular grooves, and the like. The building material has low cost, wide application, and particularly has excellent humidity resistance and moth resistance, so the building material is most suitable to be used as the outdoor building material, realizes resource of waste, and solves the problem of environmental pollution caused by white plastics.

Description

A kind of bamboo bits and waste plastic PE composite outdoor building material and application

Technical field

The present invention relates to a kind of bamboo industrial wood waste bamboo bits and waste or used plastics PE compound outdoor building section bar of utilizing, belong to material of construction manufacturing technology field.

Background technology

China is the country of timber resources relative shortage in the world, and forest coverage only is equivalent to 3/5 of world average level, and area of woods is less than 1/4 of world average level per capita.Along with the continuous increase of timber consumption, imbalance between supply and demand becomes increasingly conspicuous.Accelerate development timber conservation and substitute,, suppress the forest volume that transfinites and fell, keep ecological balance, promote forest reserves sustainable use, safeguard the international image of China's active protection physical environment meeting the need of market, significant.

Natural Wood fiber plastic composites (wood is moulded, bamboo is moulded etc.) because of having higher intensity and hardness, acid and alkali-resistance, anticorrosive, indeformable, do not contain formaldehyde, easily reclaim, can be made into characteristics such as various cross-sectional shapes and size, both kept the advantage of timber aspect processing characteristics, overcome timber again and be not durable, be afraid of the shortcoming of damaging by worms, just become one of ideal substitute for wood now, be subjected to attracting attention of countries in the world.

By retrieval, have at present and bamboo, the patent application that the plastic composite materials production application is relevant, as applying for that also disclosed Chinese patent CN1345654 discloses a kind of thermoplastic plastic and wood (bamboo) powder composite material, this material is to adopt bamboo wood powder and thermoplastic plastic coextrusion to make, the top layer coats with plastic with plasticity, plastic with plasticity wherein adopts the composite foamed or non-foaming polyvinyl chloride of hard (PVC), acrylonitrile-butadiene-benzene hexene copolymer (ABS), have smooth, smooth, advantage attractive in appearance is suitable for makes the upholstery building, but its old relatively plastics PE cost is higher.

Summary of the invention

The purpose of this invention is to provide a kind of outdoor building material that utilizes bamboo bits and waste or used plastics PE to produce, when improving the natural bamboo utilization ratio, increase the building materials kind of excellent property, and further reduce cost.

For achieving the above object, of the present inventionly utilize the bamboo bits and waste or used plastics PE compound open air building materials comprise component and the each component weight ratio is:

Bamboo bits 65%, old plastics PE30%, auxiliary agent 5%.

Wherein the auxiliary agent component and separately weight percent be:

The rare resin 0.5 of stearic acid 0.7 terpene

Silane coupling agent 0.1 phthalic acid ester coupling agent 0.1

Polyethylene wax 0.3 paraffin 0.4

Iron oxide red 0.9 titanium dioxide 1.4

Triphenyl phosphite 0.3 antioxidant (1010) 0.3.

The bamboo bits particle of above-mentioned material of construction is the 80-200 order, and old plastics PE is a commercially available standard footpath grain.

Described material of construction batching back makes moulding process and comprises drying treatment, surface treatment, premix, granulation, extrusion molding and cooling.

Described material of construction section bar comprises sheet material, solid vertical bar, hollow column or the plane is porose, periphery has sawtooth and other cross-sectional shapes such as plank road plate of cooperation half slot.

Architectural shape of the present invention is because of adopting old plastics PE, its cost is reduced greatly, the hardness, rigidity, the moistureproofness that have kept bamboo-plastic composite material simultaneously, be suitable for most outdoor building, as outdoor structural wood fields such as bed board, carrying bogie, corridor, gardens chair stool, fence, especially the performance because of anti-white ant moth is extremely superior, so Application Areas can be expanded to foundations, roadbed, underground utilities etc.Because of its base material has adopted old plastics PE, when guaranteeing material property, realized changing rejected material to useful resource, solved the pollution problem of white plastic to environment.

Four, description of drawings:

Fig. 1 is a process flow sheet of the present invention;

Fig. 2-Fig. 4 is that the present invention implements the section bar sectional view for three kinds;

Five, embodiment

Below in conjunction with specific embodiment the present invention is elaborated:

Mutiple household outdoor building materials of the present invention is composited by bamboo bits, lower-cost old plastics PE and auxiliary agent, wherein the content (weight percent) of bamboo bits is 65%, old plastics PE content is 30%, auxiliary agent be 5%, auxiliary agent component and each per-cent are: stearic acid 0.7, the rare resin 0.5 of terpene, silane coupling agent 0.1, phthalic acid ester coupling agent 0.1, polyethylene wax 0.3, paraffin 0.4 iron oxide red 0.9, titanium dioxide 1.4, triphenyl phosphite 0.3, antioxidant (1010) 0.3.

Building materials of the present invention are manufactured process and comprised: by the said ratio batching, making bamboo bits particle is 120 orders, and PE selects commercially available standard particle diameter for use, considers bamboo to be worth doing drying and surface treatment, mediates in kneading pot and obtains pre-composition; By twin screw (flat two or awl two) mixing granulation, obtain each phase homodisperse, plasticizing good mixing thing then; Pellet is sucked barrel with automatic material suction device be heated to over dry, extrude, and be molded as various section bars by specific mouth by single-screw machine; Adopt inside and outside water-cooling method to guarantee that the sheet material four sides is smooth, shrink evenly during cooling.

Through port is molded when doing, select for use different moulds can make the section bar of different cross section, as Fig. 2 to shown in Figure 4 be three kinds of section bar embodiment cross-sectional shapes wherein, be respectively solid vertical bar, hollow column and the plane is porose, periphery has sawtooth and cooperate the plank road plate of half slot.In addition, also can make other more building materials of multi-section shape according to actual needs, as have the space, thickness of slab is sheet material of 40mm or the like.

Burying test simultaneously with the timber of identical weight shows, building materials protection against the tide of the present invention, insect protected column performance and superior, when other timber is removed a half by the termite moth, this product is still intact, made in the water soak test 1 year, product appearance and inner quality do not have considerable change yet, so product applications of the present invention can be expanded to the house, roadbed, underground utilities etc.

Claims

1, a kind of bamboo bits and waste plastic PE composite outdoor building material, it is characterized in that: this building materials component and each component weight percent are: bamboo bits 65%, old plastics PE30%, auxiliary agent 5%.

2, the mutiple household outdoor building materials made of bamboo as claimed in claim 1 bits and waste or used plastics P E is characterized in that: described auxiliary agent component and separately weight percent be:

The rare resin 0.5 of stearic acid 0.7 terpene

Silane coupling agent 0.1 phthalic acid ester coupling agent 0.1

Polyethylene wax 0.3 paraffin 0.4

Iron oxide red 0.9 titanium dioxide 1.4

Triphenyl phosphite 0.3 antioxidant (1010) 0.3.

3, bamboo bits as claimed in claim 1 and waste plastic PE composite outdoor building material is characterized in that: the bamboo bits particle of described making building materials is the 80-200 order, and old plastics PE is a commercially available standard footpath grain.

4, bamboo bits as claimed in claim 1 and waste or used plastics P E mutiple household outdoor building materials is characterized in that: described building materials batching back makes moulding process and comprises drying treatment, surface treatment, premix, granulation, extrusion molding, cooling and cutting.

5, a kind of bamboo as claimed in claim 1 bits and waste plastic PE composite outdoor building material extrusion sectional material is characterized in that: described section bar is made after by bamboo bits 65%, old plastics PE30%, auxiliary agent 5% weight ratio batch mixes.

6, bamboo as claimed in claim 5 bits and waste plastic PE composite outdoor building material extrusion sectional material is characterized in that: this section bar cross-sectional shape is Filled Rectangle or hollow rectangle or the plane is porose, periphery has sawtooth and cooperate the Polygons of half slot.