Multi-scale composite thermoreversible crosslinkporcelain-able PVC material

A PVC material and multi-scale technology, which is applied in the field of preparation of multi-scale composite thermoreversible cross-linked porcelainable PVC materials, can solve the problems that cannot be reused again, and do not conform to the development trend of sustainable, green, and circular economy. Achieve the effects of maintaining recyclability, improving mechanical strength, and easy control

Active Publication Date: 2019-12-20
CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most used cross-linking methods are chemical cross-linking or radiation cross-linking. However, cross-linking will also bring another problem, that is, PVC cannot be reused after cross-linking, which does not meet the current advocated sustainable, green, Development Trend of Circular Economy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A multi-scale composite filling thermally reversible cross-linked porcelainable PVC fireproof material. The composite material is made of the following raw materials in parts by weight: 100 parts of PVC with a polymerization degree of about 2000, and the surface is coupled with silane coupling agent KH570 and titanate. 50 parts of wollastonite treated with KR-138S (median particle size 10 microns), 15 parts of dodecyltrimethylammonium bromide (DTAB) intercalated modified montmorillonite (median particle size 400 nanometers) ), 3 parts of superfine talc powder (median particle size 5 microns), ceramic additive (low melting point lead-free glass: zinc borate: chopped glass fiber powder weight ratio is 1:1:1) 5 parts (median particle size 40 microns), plasticizer DOP 35 parts, stabilizer (zinc stearate: calcium stearate weight ratio is 2:1) 5 parts, thermally reversible crosslinking agent 1 part.

[0035] (1) Add the above-mentioned various raw materials into a high-speed ...

Embodiment 2

[0038] A multi-scale composite filled thermally reversible cross-linked porcelainable PVC fireproof material. The composite material is made of the following raw materials in parts by weight: 100 parts of PVC with a polymerization degree of about 500, and the surface is coupled by silane coupling agent KH550 and titanate. 80 parts of wollastonite treated with KR-TTS (median particle size 5 microns), 5 parts of octadecyltrimethylammonium bromide (OTAB) intercalated modified montmorillonite (median particle size 80 nanometers ), 10 parts of superfine talc powder (median particle size 1 micron), ceramic additive (low melting point lead-free glass: chopped glass fiber powder weight ratio is 3:1) 15 parts (median particle size 10 microns) , 25 parts of plasticizer DOP, 0.3 parts of stabilizer (zinc laurate, calcium lauricate weight ratio: 2:1), 5 parts of thermally reversible crosslinking agent.

[0039] (1) Add the above-mentioned various raw materials into a high-speed mixer, mix...

Embodiment 3

[0042] A multi-scale composite filling thermally reversible cross-linkable porcelain PVC fireproof material, the composite material is made of the following raw materials in parts by weight: 100 parts of PVC with a polymerization degree of about 1000, and the surface is treated with titanate coupling agent KR-TTS 60 parts of wollastonite (median particle size 8 microns), cetyltrimethylammonium bromide (CTAB) intercalation modified montmorillonite 10 parts (median particle size 200 nanometers), superfine talc powder 8 parts (median particle size 3 microns), ceramic additive (low melting point lead-free glass: zinc borate weight ratio is 2:1) 10 parts (median particle size 25 microns), plasticizer DOP 20 parts, stable agent (zinc stearate, calcium lauricate weight ratio is 2:1) 3 parts, thermally reversible cross-linking agent 3 parts.

[0043] (1) Add the above-mentioned various raw materials into a high-speed mixer, mix at high speed for 15 minutes, and then discharge.

[004...

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Abstract

The invention relates to a multi-scale composite thermoreversible crosslinkporcelain-able PVC material. The raw materials comprise PVC, wollastonite, montmorillonite, talc powder, a porcelain formingassistant, a thermo reversible crosslinking agent and other assistants; and the particle sizes of the montmorillonite, the talc powder, the wollastonite and the porcelain forming assistant have gradient difference. The nano montmorillonite has good reinforcing and sintering aid functions; the wollastonite plays a good skeleton supporting role in the sintering process of the PVC; the ultra-fine talc powder can reduce the torque and friction of a screw rod when the material is melted and blended in a twin-screw extruder, the mixing efficiency is improved, and meanwhile the requirements for twin-screw equipment and the wear of equipment are lowered; the gradient change of the particle size between different fillers can make fillers with small particle size fill in gaps formed by fillers withlarge particle size, the 'caulking' effect formed between the fillers can effectively decrease the melt index of a filled PVC melting body, thus the extrusion process of the porcelain-able PVC is easier to control, the material surface is smoothier, and has less defects.

Description

technical field [0001] The invention relates to the technical field of functional polymer composite materials, in particular to a preparation method of a multi-scale composite thermally reversible cross-linked porcelain-able PVC material. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics, second only to polyethylene in demand. In my country, PVC is still the resin with the largest output. Polyvinyl chloride (PVC) resin is a polar non-crystalline high polymer, its products have good physical and chemical properties, and can be widely used in the fields of industry, construction, agriculture and daily necessities, among which the total amount of PVC About 7% of the total is used for wire and cable materials. [0003] With the continuous development of my country's economy, the process of urbanization continues to advance, and the trend of urban population densification is increasing. Residential and public buildings are also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/04C08K9/06C08K3/34C08K7/10C08K3/40C08K3/38C08K7/14C08K5/17C08K5/098
CPCC08K3/34C08K3/346C08K3/38C08K3/40C08K5/098C08K5/17C08K7/10C08K7/14C08K9/04C08K9/06C08K13/06C08K2003/387C08K2201/003C08K2201/011C08K2201/014C08K2201/016C08L2201/02C08L27/06
Inventor 王金合苏桂明席凯斌唐科达管文武朱俊张尔梅
Owner CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF
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