CN102181105A - Method for preparing hard polyvinyl chloride (PVC) injection molding particles - Google Patents
Method for preparing hard polyvinyl chloride (PVC) injection molding particles Download PDFInfo
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- CN102181105A CN102181105A CN 201110028671 CN201110028671A CN102181105A CN 102181105 A CN102181105 A CN 102181105A CN 201110028671 CN201110028671 CN 201110028671 CN 201110028671 A CN201110028671 A CN 201110028671A CN 102181105 A CN102181105 A CN 102181105A
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- pvc
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- polyvinyl chloride
- injection molding
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Abstract
The invention relates to a method for preparing hard polyvinyl chloride (PVC) injection molding particles. The method comprises the following steps of: 1, adding PVC resin, calcium/zinc composite heat stabilizer, methyl methacrylate-butadiene-styrene terpolymer, polyacrylate, stearic acid, rutile titanium dioxide, polyethylene (PE) wax, light calcium carbonate and dilctyl sebancate into a mixer; stirring and mixing uniformly to prepare PVC mixture; and 2, pelleting the PVC mixture which is mixed by the mixer by a double-screw extruder to obtain hard PVC injection molding particles. The hard PVC injection molding particles prepared by the method are non-toxic, have excellent stabilization effect and low price, and are convenient to use.
Description
Technical field
The present invention relates to a kind of hard PVC injection moulding particulate material preparation method.Be mainly used in refrigeration formula freight container.
Background technology
The heat stabilizing system of PVC injection moulding particulate material employing at present mainly contains lead salt and organotin etc.Lead salt stabilizer is to use maximum stablizers during present plastic door-window is produced, and has advantage cheap and that stabilising effect is good.But,, still there is potential to threaten to environment and HUMAN HEALTH though directly do not contact with human body because of the toxicity of lead; Organotin requires height to the surperficial erosion resistance and the chromium plating of screw rod, machine barrel, and decomposition rate own is very fast.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of nontoxic and more excellent stabilising effect is arranged, hard PVC injection moulding particulate material preparation method easy to use, cheap.
The object of the present invention is achieved like this: a kind of hard PVC injection moulding particulate material preparation method, and described method comprises following technological process:
Step 1, add in mixer that polyvinyl chloride resin, calcium/zinc composite heat stabilizer, methyl methacrylate-butadiene-styrene terpolymer, polyacrylic ester, stearic acid, rutile titanium white powder, PE are cured, paraffin, light calcium carbonate and dioctyl sebacate, mix, be mixed with the PVC compound;
Step 2, PVC compound that mixer is mixed promptly make hard PVC injection moulding particulate material by the twin screw extruder granulation;
The mass parts that feeds intake of described each component is:
100 parts of polyvinyl chloride resins
6 ~ 8 parts of calcium/zinc composite heat stabilizers
10 ~ 12 parts of methyl methacrylates-butadiene-styrene terpolymer
4 ~ 5 parts of polyacrylic ester
0.1 ~ 0.4 part of stearic acid
2 ~ 4 parts in rutile titanium white powder
PE cured 0.1 ~ 0.4
Paraffin 0.1 ~ 0.3
20 ~ 30 parts of light calcium carbonates
3 ~ 5 parts of dioctyl sebacates.
In various stabiliser systems, calcium/zinc composite heat stabilizer is a non-toxic heat stabilizer, and more excellent stabilising effect is arranged, and is easy to use, cheap.World-renowned thermo-stabilizer manufacturer all has industrialization product, and mainstream product is the bear board calcium/zinc composite heat stabilizer of Germany.
The developing direction of hard PVC goods is low toxicities, green, environmental protection.Adopt the goods of the environment-friendly type hard PVC material injection moulding of granulation process processing, be applied to refrigerate the formula freight container, play subzero 30 the degree about the low temperature working conditions under, the effect that can keep better mechanical strength, when having satisfied refrigeration formula freight container storing food again to environment requirement.
The invention has the beneficial effects as follows:
The present invention is to produce the SG-7 type (model of polyvinyl chloride resin, divide based on molecular weight ranges) polyvinyl chloride resin, utilize polyvinyl chloride resin to have the processing diversity, cheap, can replace engineering plastics, the characteristic of steel etc., on basis, adjust production formula with nontoxic calcium/zinc composite heat stabilizer, it is good to develop plasticizing capacity, has rheological and thermotolerance preferably, is suitable for the environment-friendly type PVC particulate material of injection moulding.The principle of component design is the low temperature service requirements according to subzero 30 degree of refrigeration formula freight container.
Embodiment
The hard PVC injection moulding particulate material that the present invention relates to, the mass parts that feeds intake of described particulate material each component is:
| The starting material title | Umber | Remarks |
| Polyvinyl chloride resin | 100 | The Shanghai chlor-alkali |
| Calcium/zinc composite heat stabilizer | 6-8 | Germany's bear board |
| Methyl methacrylate-butadiene-styrene terpolymer | 10-12 | Sky, Wenzhou is contained |
| Polyacrylic ester | 4-5 | Yiyuan Rui Feng |
| Stearic acid | In right amount | Commercially available |
| The rutile titanium white powder | 2-4 | Zhenjiang town titanium |
| PE is cured | In right amount | Commercially available |
| Paraffin | In right amount | Commercially available |
| Light calcium carbonate | 20-30 | Commercially available |
| Dioctyl sebacate | 3-5 | Commercially available |
Injection moulding machine adopts single screw rod melten gel, and the limited and barrel of plasticizing capacity does not have gas barrier, and product easily produces bubble (globule), radial flow liner phenomenon.The Tt-Td scope of polyvinyl chloride resin is little simultaneously, very responsive to temperature, it is mobile poor, and the mold temperature scope is narrow, use the complicated product of powder injection moulding shape, it is poor to exist master stream property, and plasticizing capacity is bad, feeding deficiency in the processing, mold filling character is bad, easily make the product apparent middle pore that produces, trachoma, quality problems such as Bai Hen and the implicit insufficient quality problems of product strength.
In order to guarantee PVC physical properties of articles and visual appearance, the PVC compound that mixer is mixed because this equipment plasticizing capacity is strong, has gas barrier can just remedy the deficiency of injection moulding machine by the twin screw extruder granulation.After pellet plastifies through twin screw extruder, material can reach molecular level to be disperseed, vacuum pumping hardware can siphon away redundant moisture, pellet leaves stable chemical performance in the air in, secondary plasticizing to injection moulding machine is very useful, is embodied in: extrudate density, stable physical property, be difficult for producing cold spot peeling, can effectively control bubble flow liner phenomenon; Surface smoothness is good, workshop condition is polluted few.
Claims (1)
1. hard PVC injection moulding particulate material preparation method, it is characterized in that: described method comprises following technological process:
Step 1, add in mixer that polyvinyl chloride resin, calcium/zinc composite heat stabilizer, methyl methacrylate-butadiene-styrene terpolymer, polyacrylic ester, stearic acid, rutile titanium white powder, PE are cured, paraffin, light calcium carbonate and dioctyl sebacate, mix, be mixed with the PVC compound;
Step 2, PVC compound that mixer is mixed promptly make hard PVC injection moulding particulate material by the twin screw extruder granulation;
The mass parts that feeds intake of described each component is:
100 parts of polyvinyl chloride resins
6 ~ 8 parts of calcium/zinc composite heat stabilizers
10 ~ 12 parts of methyl methacrylates-butadiene-styrene terpolymer
4 ~ 5 parts of polyacrylic ester
0.1 ~ 0.4 part of stearic acid
2 ~ 4 parts in rutile titanium white powder
PE cured 0.1 ~ 0.4
Paraffin 0.1 ~ 0.3
20 ~ 30 parts of light calcium carbonates
3 ~ 5 parts of dioctyl sebacates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028671 CN102181105A (en) | 2011-01-27 | 2011-01-27 | Method for preparing hard polyvinyl chloride (PVC) injection molding particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028671 CN102181105A (en) | 2011-01-27 | 2011-01-27 | Method for preparing hard polyvinyl chloride (PVC) injection molding particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102181105A true CN102181105A (en) | 2011-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110028671 Pending CN102181105A (en) | 2011-01-27 | 2011-01-27 | Method for preparing hard polyvinyl chloride (PVC) injection molding particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102181105A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731925A (en) * | 2012-06-05 | 2012-10-17 | 浙江鑫牛管业有限公司 | Pearl clamshell powder PVC material |
| CN103923409A (en) * | 2013-11-13 | 2014-07-16 | 武汉宜化塑业有限公司 | Production method of PVC-U (rigid polyvinyl chloride) winding pipe plate and strip material |
| CN111484687A (en) * | 2020-04-22 | 2020-08-04 | 广东联塑科技实业有限公司 | Impact-resistant toughened PVC pipe fitting and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864130A (en) * | 2010-07-26 | 2010-10-20 | 南京皇家聚锋建筑材料有限公司 | PVC plastic-wood material |
| CN101914252A (en) * | 2010-08-20 | 2010-12-15 | 浙江大学 | Low-cost environment-friendly injection-molding high heat-resistant high impact-resistant rigid polyvinyl chloride composite and preparation method thereof |
-
2011
- 2011-01-27 CN CN 201110028671 patent/CN102181105A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864130A (en) * | 2010-07-26 | 2010-10-20 | 南京皇家聚锋建筑材料有限公司 | PVC plastic-wood material |
| CN101914252A (en) * | 2010-08-20 | 2010-12-15 | 浙江大学 | Low-cost environment-friendly injection-molding high heat-resistant high impact-resistant rigid polyvinyl chloride composite and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731925A (en) * | 2012-06-05 | 2012-10-17 | 浙江鑫牛管业有限公司 | Pearl clamshell powder PVC material |
| CN103923409A (en) * | 2013-11-13 | 2014-07-16 | 武汉宜化塑业有限公司 | Production method of PVC-U (rigid polyvinyl chloride) winding pipe plate and strip material |
| CN103923409B (en) * | 2013-11-13 | 2016-03-16 | 武汉宜化塑业有限公司 | A kind of production method of PVC-U winding tube strip material |
| CN111484687A (en) * | 2020-04-22 | 2020-08-04 | 广东联塑科技实业有限公司 | Impact-resistant toughened PVC pipe fitting and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110914 |