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Double-machine co-extrusion plastic template preparing equipment and method

A plastic formwork and co-extrusion technology, which is applied in the field of plastic formwork prepared by double-machine co-extrusion, can solve the problems of high assembly requirements, low product profits, and difficulty in absorbing heat, so as to achieve wide application range, easy large-scale production, and difficult endothermic effect

Pending Publication Date: 2017-07-07
上海隽筑新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the actual application, the following problems arise: 1. The black recycled material is cheap, but it absorbs a lot of heat, especially in summer, the thermal expansion and contraction range is large, and the assembly requirements are high.
2. White is not easy to absorb heat and easy to assemble, but the recycled materials can be used in a wide range, the price is high, and the product profit is low

Method used

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  • Double-machine co-extrusion plastic template preparing equipment and method
  • Double-machine co-extrusion plastic template preparing equipment and method
  • Double-machine co-extrusion plastic template preparing equipment and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Proportion according to the following mass percentages, black recycled polypropylene material: colored recycled polypropylene material = 1:1, black recycled polypropylene material: first auxiliary agent = 100:15; colored recycled polypropylene material: second auxiliary agent = 100:15, wherein the mass composition of the first additive is: 4,4'-bismaleimide diphenylmethane: EPDM rubber-maleic anhydride graft: polypropylene-maleic anhydride graft Branch thing: calcium stearate: silane coupling agent: 2,4-cresyl diisocyanate: length is the graphite long fiber=2:3:3:15:20:15:150 of 200 microns; The mass composition of the secondary additives is: 4,4'-bismaleimide diphenylmethane: calcium stearate: silane coupling agent: 2,4-cresyl diisocyanate: graphite with a length of 10 microns Short fiber = 2:15:20:30:500.

[0034] The black recycled polypropylene material is transported to the feed port of the main screw extruder through the main hopper, the first auxiliary agent is ...

Embodiment 2

[0036]Proportion according to the following mass percentage, black recycled polypropylene material: colored recycled polypropylene material = 1:1, black recycled polypropylene material: first auxiliary agent = 100:30; colored recycled polypropylene material: second auxiliary agent = 100:30, wherein the mass composition of the first additive is: 4,4'-bismaleimide diphenylmethane: EPDM rubber-maleic anhydride graft: polypropylene-maleic anhydride graft Branch thing: calcium stearate: silane coupling agent: 2,4-cresyl diisocyanate: length is the graphite long fiber=5:10:10:20:30:50:500 of 300 microns; The mass composition of the secondary additives is: 4,4'-bismaleimide diphenylmethane: calcium stearate: silane coupling agent: 2,4-cresyl diisocyanate: graphite with a length of 50 microns Short fiber = 5:20:30:90:900.

Embodiment 3

[0038] Proportion according to the following mass percentages, black recycled polypropylene material: colored recycled polypropylene material = 1:1, black recycled polypropylene material: first auxiliary agent = 100:20; colored recycled polypropylene material: second auxiliary agent = 100:20, wherein the mass composition of the first additive is: 4,4'-bismaleimide diphenylmethane: EPDM rubber-maleic anhydride graft: polypropylene-maleic anhydride graft Branch thing: calcium stearate: silane coupling agent: 2,4-cresyl diisocyanate: length is the graphite long fiber=3:5:5:15:20:30:300 of 200 microns; The mass composition of the secondary additives is: 4,4'-bismaleimide diphenylmethane: calcium stearate: silane coupling agent: 2,4-cresyl diisocyanate: graphite with a length of 10 microns Short fiber = 4:15:25:60:600.

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Abstract

The invention provides a double-machine co-extrusion plastic template preparing technology. Two screw extruders are adopted and are used for machining black recycled polypropylene materials and colored recycled polypropylene materials correspondingly, and then the black recycled polypropylene materials and the colored recycled polypropylene materials are co-extruded into the same template, wherein the black recycled materials are internal filling materials, the colored recycled materials serve as surface wrapping materials, and the plastic template with the colored appearance and the black inner core is obtained. The black recycled materials are low in cost, large in heat absorbing amount, large in thermal expansion and cold shrinkage range and high in requirement for splicing. The colored recycled materials are not likely to absorb heat and easy to assemble, but the colored recycled materials are large in utilization range and high in cost. The plastic template prepared through the technology is low in cost, small in heat absorbing amount, not likely to deform and convenient to assemble.

Description

technical field [0001] The invention relates to a process for preparing a plastic formwork by twin-machine co-extrusion, in particular to an equipment and method for preparing a plastic formwork by double-machine co-extrusion. Background technique [0002] Existing hollow plastic building templates are produced by single-machine extrusion, and the internal and external colors of the product are uniform. According to the actual application, the following problems arise: 1. The black recycled material is cheap, but it absorbs a lot of heat, especially in summer, the thermal expansion and contraction range is large, and the assembly requirements are high. 2. White is not easy to absorb heat and easy to assemble, but the recycled materials can be used in a wide range, the price is high, and the product profit is low. 3. Recycled materials of other colors are better than black in thermal expansion and contraction, but the market is limited. No matter what color recycled material...

Claims

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Application Information

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IPC IPC(8): B29C47/00B29K23/00B29K105/12B29L7/00
CPCB29C48/0022B29C48/022B29C48/07B29K2023/12B29K2105/12B29L2007/002
Inventor 李云全李宜强
Owner 上海隽筑新材料科技有限公司