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Method for modifying surface of calcium carbonate and application of calcium carbonate in PVC foamed plate

A foamed sheet and calcium carbonate technology, applied in chemical instruments and methods, fibrous fillers, dyeing physical treatment, etc., can solve the problems of low impact strength and brittle cracking, and improve the notched impact strength and tensile breaking strength , Good compatibility, the effect of improving compatibility

Inactive Publication Date: 2018-11-27
贺州钟山县双文碳酸钙新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVC resin has a large number of polar C-Cl bonds in its molecular chain structure, and there is a large force between molecules. It is a hard and brittle material with low impact strength and notch sensitivity. It is easily brittle when impacted by external forces. Therefore, it is necessary to strengthen and toughen the rigid PVC

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A PVC foam board, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 15 parts of hydroxyl-terminated polybutadiene, 35 parts of bamboo powder, 50 parts of modified calcium carbonate, 5 parts of glass fiber, polyether 2.5 parts of modified polydimethylsiloxane, 4 parts of maleic anhydride and allyl alcohol ether copolymer, 3 parts of composite foaming agent, 2 parts of titanate coupling agent, dibutyltin laurate maleate stabilized 2.5 parts of agent, 2 parts of lubricant, 2 parts of 1010 antioxidant and 4 parts of processing aid.

[0034] The composite blowing agent is composed of sodium carbonate and sodium lauroyl sarcosinate with a weight ratio of 1:2. The lubricant is composed of castor oil polyoxyethylene ether and pentaerythritol palmitate in a mass ratio of 1:1. The processing aid is composed of polyethylene glycol dehydroabietic acid ester and alkylphenol polyoxyethylene ether sodium sulfate with a weight ratio of 3:1.

[0035] D...

Embodiment 2

[0045] A PVC foam board, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 20 parts of hydroxyl-terminated polybutadiene, 40 parts of bamboo powder, 60 parts of modified calcium carbonate, 3 parts of glass fiber, polyether 1.5 parts of modified polydimethylsiloxane, 5 parts of maleic anhydride and allyl alcohol ether copolymer, 4 parts of composite blowing agent, 3 parts of polyetherimide coupling agent, 3.5 parts of calcium zinc stabilizer, 1 part of lubricant, 1.5 parts of 1076 antioxidant and 5 parts of processing aid.

[0046] The composite foaming agent is composed of sodium carbonate and sodium lauroyl sarcosinate with a weight ratio of 1:3. The lubricant is composed of castor oil polyoxyethylene ether and pentaerythritol palmitate with a mass ratio of 1:2. The processing aid is composed of polyethylene glycol dehydroabietic acid ester and sodium alkylphenol polyoxyethylene ether sulfate with a weight ratio of 1:2.

[0047] Described mo...

Embodiment 3

[0057] A PVC foam board, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 10 parts of hydroxyl-terminated polybutadiene, 30 parts of bamboo powder, 40 parts of modified calcium carbonate, 4 parts of glass fiber, polyether 3 parts of modified polydimethylsiloxane, 3 parts of maleic anhydride and allyl alcohol ether copolymer, 2 parts of composite blowing agent, 3 parts of aluminum-zirconate coupling agent, dibutyltin laurate maleic acid 4 parts of salt stabilizer, 2.5 parts of lubricant, 1 part of CA antioxidant and 3 parts of processing aid.

[0058] The composite foaming agent is composed of sodium carbonate and sodium lauroyl sarcosinate with a weight ratio of 1:3. The lubricant is composed of castor oil polyoxyethylene ether and pentaerythritol palmitate with a mass ratio of 1:2. The processing aid is composed of polyethylene glycol dehydroabietic acid ester and sodium alkylphenol polyoxyethylene ether sulfate with a weight ratio of 1:1. ...

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Abstract

The invention discloses a method for modifying the surface of calcium carbonate and an application of the calcium carbonate in a PVC foamed plate. The method comprises the following steps: treating calcium carbonate with disodium cocoamido mono-ethanol-amide sulfosuccinate and octaphenyl polyoxyethyiene, and modifying the calcium carbonate for second time with octa(Aminophenyl)silsesquioxane and colza oil fatty acid alkanolamide borate. The obtained calcium carbonate has high dispersion, high toughness, weather resistance and excellent mechanical performance. When being applied to PVC plate filling, the modified calcium carbonate gives the plate the advantages of high strength, strong impact resistance, good flame retardance, heat tolerance, long service life and the like.

Description

technical field [0001] The invention relates to the technical field of wood-plastic composite materials, in particular to a method for modifying the surface of calcium carbonate and its application in PVC foam boards. Background technique [0002] Calcium carbonate is an important inorganic chemical product, which is widely used in rubber, plastic, paper, composite board, paint, ink, medicine, automobile paint, cosmetics, food and other industries. Calcium carbonate is one of the important fillers for PVC wood-plastic panels, but because the particle size of calcium carbonate particles is smaller and the number of atoms on the surface is more, the surface energy is higher, the adsorption is stronger, and the particles are agglomerated with each other; followed by As an inorganic filler, calcium carbonate has a hydrophilic and oleophobic particle surface, which has poor affinity with PVC resin and easily forms aggregates, resulting in internal defects and poor mechanical prop...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K9/06C08K3/26C08J9/08C08L27/06C08L47/00C08L97/02C08L83/12C08L35/08C08K7/14C09C1/02C09C3/04C09C3/08C09C3/10C09C3/12
CPCC01P2006/22C01P2006/37C08J9/0066C08J9/009C08J9/0095C08J9/08C08J2203/02C08J2327/06C08J2435/08C08J2447/00C08J2483/12C08J2497/02C08K3/26C08K9/04C08K9/06C09C1/021C09C3/006C09C3/041C09C3/08C09C3/10C09C3/12
Inventor 唐文易双
Owner 贺州钟山县双文碳酸钙新材料有限公司
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