Summary of the invention
The object of the present invention is to provide a kind of cotton stalk powder/PVC foam matrix material.
Another purpose of the present invention is to provide a kind of method for preparing above-mentioned foam composite material.
For realizing above-mentioned purpose, cotton stalk powder provided by the invention/PVC foam matrix material has the component of following parts by weight:
100 parts of polyvinyl chloride resin powder,
10~30 parts in cotton stalk powder,
2~6 parts of one package stabilizers,
0.5~1.0 part of Cellmic C 121,
6~12 parts of esters of acrylic acid foaming control agents,
4~10 parts of modification agents,
1~2.0 part of lubricant,
10~20 parts of weighting agents.
Described cotton stalk powder/SE foam matrix material, wherein one package stabilizer is that lead is one package stabilizer or calcium-zinc composite stabilizing agent.
Described cotton stalk powder/SE foam matrix material, wherein modification agent is any or its combination in esters of acrylic acid, the chlorinatedpolyethylene.
Described cotton stalk powder/SE foam matrix material, wherein lubricant is any or combination in Triple Pressed Stearic Acid, calcium stearate, barium stearate, Zinic stearas, paraffin, PE wax, the OPE wax.
Described cotton stalk powder/SE foam matrix material, wherein, described weighting agent is any or its combination in lime carbonate, talcum powder, the white titanium pigment.
Described cotton stalk powder/SE foam matrix material, wherein adding has oxidation inhibitor, fire retardant and tinting material.
The method of the above-mentioned cotton stalk powder of preparation provided by the invention/SE foam matrix material, key step is:
1) cotton stalk powder is joined in the mixing machine, add the coupling agent stirring at 80~90 ℃ and make the wood powder activation;
2) mix all materials in proportion;
3) setting machine barrel, die head temperature are 140~180 ℃, and the blended material is steadily extruded, and get title product.
Described preparation method, wherein the granularity of the said cotton stalk powder of step 1 is 40~300 orders.
Described preparation method, wherein the described coupling agent of step 1 is silane coupling agent or titanate coupling agent or aluminate coupling agent.
Described preparation method, wherein the described mixing of step 2 is in mixer, to carry out.
The present invention has the following advantages:
1) the present invention replaces wood powder with cotton stalk powder; Develop a kind ofly have that light weight, specific tenacity are good, waterproof, mildew-resistant, environmental protection; Smooth surface has woodiness touch, has the novel wood-plastic foam composite material of continuous uniform distribution foaming micropore; Can adopt the mode of nail, saw, plane to process, can be used in furniture-plates, floor, baseboard, fence etc.
2) the used cotton stalk powder aboundresources of the present invention is with low cost, has tangible price advantage.
3) technology of the present invention is simple, is easy to grasp and control, is convenient to realize scale prodn.
Embodiment
Cotton stalk powder of the present invention/PVC foam matrix material comprises the component of following parts by weight:
100 parts in polyvinyl chloride resin powder, 10~30 parts in cotton stalk powder, 2~6 parts of one package stabilizers, 0.5~1.0 part of AC whipping agent, 6~12 parts of esters of acrylic acid foaming control agents, 4~10 parts of modification agents, 1~2.0 part of lubricant, 10~20 parts of weighting agents.
Can add (these subsidiary material are known technology, and the present invention does not describe in detail) such as oxidation inhibitor, fire retardant, tinting materials as required in the above-mentioned matrix material.
The granularity of above-mentioned cotton stalk powder is 40~300 orders, through silane coupling agent or titanate coupling agent or aluminate coupling agent processing.
Above-mentioned one package stabilizer is that lead is one package stabilizer or calcium-zinc composite stabilizing agent.
Above-mentioned modification agent is any or its combination in esters of acrylic acid (ACR), the chlorinatedpolyethylene (CPE).
Above-mentioned lubricant is any or combination in Triple Pressed Stearic Acid, calcium stearate, barium stearate, Zinic stearas, paraffin, PE wax, the OPE wax.
Above-mentioned weighting agent is any or its combination in lime carbonate, talcum powder, the white titanium pigment.
The moulding process of cotton stalk powder of the present invention/PVC foam matrix material is made up of following steps:
(1) with the cotton stalk powder of coupling agent treatment: cotton stalk powder is joined in the high-speed mixer, add the coupling agent stirring at 80~90 ℃ and made the wood powder activation in 20 minutes;
(2) join all materials in the mixer in proportion, be mixed evenly;
(3) forcing machine is matched with mould, cooling and shaping device, towing mechanism, cutting unit;
(4) setting machine barrel, die head temperature (is example with " 80 " twin screw extruder) are 140~180 ℃; Open water coolant, cooling and shaping device, towing mechanism, cutting unit; Insulation was started shooting after 1 hour after being heated to design temperature; Mixed ingredients is put in the forcing machine, and adjustment main frame and reinforced rotating speed can obtain to have smooth surface and the loose inner Wood-plastic foam material of uniform in foaming of not foaming of skinning to steadily extruding.
Below lift specific embodiment and do explanation further.
Embodiment 1
Cotton stalk powder/PVC foam matrix material has the component of following parts by weight:
100 parts in polyvinyl chloride resin powder, 10 parts in cotton stalk powder, lead are 2 parts of one package stabilizers, 0.5 part of AC whipping agent, 6 parts of esters of acrylic acid foaming control agents, 10 parts of modification agents, 1 part of lubricant, 20 parts of weighting agents.
Its preparation method comprises the steps:
(1) with the cotton stalk powder of coupling agent treatment: cotton stalk powder is joined in the high-speed mixer, add the coupling agent stirring at 80~90 ℃ and made the wood powder activation in 20 minutes;
(2) join all materials in the mixer in proportion, be mixed evenly;
(3) forcing machine is matched with mould, cooling and shaping device, towing mechanism, cutting unit;
(4) set machine barrel, die head temperature (is example with " 80 " twin screw extruder); 140 ℃ in one district, 150 ℃ in two districts, 155 ℃ in three districts, 160 ℃ in four districts, 165 ℃ of head 170 ℃, mouthful moulds; Open water coolant, cooling and shaping device, towing mechanism, cutting unit; Mixed ingredients is put in the forcing machine, and adjustment main frame and reinforced rotating speed can obtain to have smooth surface and the loose inner Wood-plastic foam material of uniform in foaming of not foaming of skinning to steadily extruding.
Embodiment 2
Cotton stalk powder/PVC foam matrix material has the component of following parts by weight:
100 parts in polyvinyl chloride resin powder, 20 parts in cotton stalk powder, 4 parts of calcium-zinc composite stabilizing agents, 0.7 part of AC whipping agent, 9 parts of esters of acrylic acid foaming control agents, 8 parts of modification agents, 1.5 parts of lubricants, 16 parts of weighting agents.
Its preparation method comprises the steps:
(1) with the cotton stalk powder of coupling agent treatment: cotton stalk powder is joined in the high-speed mixer, add the coupling agent stirring at 80~90 ℃ and made the wood powder activation in 20 minutes;
(2) join all materials in the mixer in proportion, be mixed evenly;
(3) forcing machine is matched with mould, cooling and shaping device, towing mechanism, cutting unit;
(4) set machine barrel, die head temperature (is example with " 80 " twin screw extruder); 140 ℃ in one district, 150 ℃ in two districts, 160 ℃ in three districts, 165 ℃ in four districts, 168 ℃ of head 175 ℃, mouthful moulds; Open water coolant, cooling and shaping device, towing mechanism, cutting unit; Mixed ingredients is put in the forcing machine, and adjustment main frame and reinforced rotating speed can obtain to have smooth surface and the loose inner Wood-plastic foam material of uniform in foaming of not foaming of skinning to steadily extruding.
Embodiment 3
Powder/PVC foam matrix material component is following parts by weight to cotton stalk:
100 parts in polyvinyl chloride resin powder, 30 parts in cotton stalk powder, lead are 6 parts of one package stabilizers, 1 part of AC whipping agent, 12 parts of esters of acrylic acid foaming control agents, 4 parts of modification agents, 2 parts of lubricants, 10 parts of weighting agents.
Its preparation method comprises the steps:
(1) with the cotton stalk powder of coupling agent treatment: cotton stalk powder is joined in the high-speed mixer, add the coupling agent stirring at 80~90 ℃ and made the wood powder activation in 20 minutes;
(2) join all materials in the mixer in proportion, be mixed evenly;
(3) forcing machine is matched with mould, cooling and shaping device, towing mechanism, cutting unit;
(4) set machine barrel, die head temperature (is example with " 80 " twin screw extruder); 140 ℃ in one district, 150 ℃ in two districts, 165 ℃ in three districts, 170 ℃ in four districts, 165 ℃ of head 180 ℃, mouthful moulds; Open water coolant, cooling and shaping device, towing mechanism, cutting unit; Mixed ingredients is put in the forcing machine, and adjustment main frame and reinforced rotating speed can obtain to have smooth surface and the loose inner Wood-plastic foam material of uniform in foaming of not foaming of skinning to steadily extruding.